Increased risk of ischemic stroke associated with new onset atrial fibrillation complicating acute coronary syndrome- a systematic review and meta-analysis
Increased risk of ischemic stroke associated with new onset atrial fibrillation complicating acute coronary syndrome- a systematic review and meta-analysis
Coronary heart disease is best addressed by a comprehensive approach aimed at halting atherosclerotic disease and reducing the risk of thrombosis. Unfortunately, our success in optimal risk factor modification in patients with stable CHD remains poor: only 41% of patients achieved all basic goals in the recent ISCHEMIA trial, with success rates likely even lower outside the rigorous clinical trial context. A greater focus on achieving prevention goals in patients with CHD will have a substantial impact on patient outcome and rates of hospitalization and more resources and incentives should be allocated for improved secondary prevention.
The ISCHEMIA trial suggests that even selected, high-risk patients with extensive ischemic burden do not benefit from revascularization barring unacceptable angina despite OMT. As ISCHEMIA excluded patients with unacceptable angina, advanced heart failure, and those with unprotected left main disease, our evaluation may be geared to identify such patients for consideration of revascularization alongside an initial strategy of OMT.
Atherosclerosis is a systemic disease of the arterial circulation, with focal areas of more severe manifestation. From an imaging standpoint, the paradigm of ischemia testing may have come to an end. Recent evidence from COURAGE, PROMISE, SCOT-HEART, and ISCHEMIA has demonstrated that functional testing for inducible myocardial ischemia is inferior to anatomic assessment for risk stratifying and managing patients with suspected or known CHD. Consistent with a large body of evidence, risk from CHD is mediated by the extent of atherosclerotic disease burden and not by the extent of inducible ischemia. Given that 55% of patients had nonobstructive CHD by CT in PROMISE, which was associated with 77% of cardiovascular deaths and myocardial infarctions at follow-up, there is immense opportunity to impact the disease at an earlier stage in a very large population of patients with occult CHD.
Modeling of Longitudinal Pulse Rate, Respiratory Rate and Blood Pressure Meas...Premier Publishers
Congestive heart failure (CHF) is a chronic condition that happens when the heart’s muscle becomes too damaged to adequately pump the blood around your body. The main objective of this study was to modeling the longitudinal pulse rate, respiratory rate and blood pressure measurements from congestive heart failure patients under follow up at Tikur Anbessa Specialized Hospital. This retrospective cohort study was based on secondary data obtained from Tikur Anbessa Specialized Hospital. Modeling approach of longitudinal data analysis was applied by suing Linear Mixed Models to identify risk factors and to compare efficiency of the models. Fit statistics showed that the joint model resulted in better fit to the data than the separate models, implying a significant association among the two end points. Based on the joint model for SBP, diagnosis history, family history, NYHA class, and time, and for DBP, age, weight, sex, family history, NYHA class, and time are the significant factors, at 5% level of significance. The joint model fitted the data better than the separate models. The result from the joint model suggested a strong association between the evolutions and a slowly increasing evolution of the association between PR and RR also, between SBP and DBP. Thus, fitting joint model is recommended for researches to any types of multivariate response variable together jointly.
Coronary heart disease is best addressed by a comprehensive approach aimed at halting atherosclerotic disease and reducing the risk of thrombosis. Unfortunately, our success in optimal risk factor modification in patients with stable CHD remains poor: only 41% of patients achieved all basic goals in the recent ISCHEMIA trial, with success rates likely even lower outside the rigorous clinical trial context. A greater focus on achieving prevention goals in patients with CHD will have a substantial impact on patient outcome and rates of hospitalization and more resources and incentives should be allocated for improved secondary prevention.
The ISCHEMIA trial suggests that even selected, high-risk patients with extensive ischemic burden do not benefit from revascularization barring unacceptable angina despite OMT. As ISCHEMIA excluded patients with unacceptable angina, advanced heart failure, and those with unprotected left main disease, our evaluation may be geared to identify such patients for consideration of revascularization alongside an initial strategy of OMT.
Atherosclerosis is a systemic disease of the arterial circulation, with focal areas of more severe manifestation. From an imaging standpoint, the paradigm of ischemia testing may have come to an end. Recent evidence from COURAGE, PROMISE, SCOT-HEART, and ISCHEMIA has demonstrated that functional testing for inducible myocardial ischemia is inferior to anatomic assessment for risk stratifying and managing patients with suspected or known CHD. Consistent with a large body of evidence, risk from CHD is mediated by the extent of atherosclerotic disease burden and not by the extent of inducible ischemia. Given that 55% of patients had nonobstructive CHD by CT in PROMISE, which was associated with 77% of cardiovascular deaths and myocardial infarctions at follow-up, there is immense opportunity to impact the disease at an earlier stage in a very large population of patients with occult CHD.
Modeling of Longitudinal Pulse Rate, Respiratory Rate and Blood Pressure Meas...Premier Publishers
Congestive heart failure (CHF) is a chronic condition that happens when the heart’s muscle becomes too damaged to adequately pump the blood around your body. The main objective of this study was to modeling the longitudinal pulse rate, respiratory rate and blood pressure measurements from congestive heart failure patients under follow up at Tikur Anbessa Specialized Hospital. This retrospective cohort study was based on secondary data obtained from Tikur Anbessa Specialized Hospital. Modeling approach of longitudinal data analysis was applied by suing Linear Mixed Models to identify risk factors and to compare efficiency of the models. Fit statistics showed that the joint model resulted in better fit to the data than the separate models, implying a significant association among the two end points. Based on the joint model for SBP, diagnosis history, family history, NYHA class, and time, and for DBP, age, weight, sex, family history, NYHA class, and time are the significant factors, at 5% level of significance. The joint model fitted the data better than the separate models. The result from the joint model suggested a strong association between the evolutions and a slowly increasing evolution of the association between PR and RR also, between SBP and DBP. Thus, fitting joint model is recommended for researches to any types of multivariate response variable together jointly.
Serum Uric Acid and Outcome after Acute Ischemic Stroke: PREMIER StudyErwin Chiquete, MD, PhD
Background: Current evidence shows that uric acid is a potent
antioxidant whose serum concentration increases rapidly
after acute ischemic stroke (AIS). Nevertheless, the relationship
between serum uric acid (SUA) levels and AIS
outcome remains debatable. We aimed to describe the
prognostic significance of SUA in AIS. Methods: We studied
463 patients (52% men, mean age 68 years, 13% with glomerular
filtration rate <60 />2) at 30 days, or with
any outcome measure at 3, 6 or 12 months poststroke. After
adjustment for age, gender, stroke type and severity (NIHSS
<9),><24 h. Conclusions: A low SUA
concentration is modestly associated with a very good
short-term outcome. Our findings support the hypothesis
that SUA is more a marker of the magnitude of the cerebral
infarction than an independent predictor of stroke outcome.
Compliance of pharmacological treatment for non-ST-elevation acute coronary syndromes with contemporary guidelines: influence on outcomes
Authors: Hélder Dores, Carlos Aguiar, Jorge Ferreira, Jorge Mimoso, Sílvia Monteiro, Filipe Seixo, José Ferreira Santos, On behalf of Portuguese Registry on Acute Coronary Syndromes (ProACS) Investigators
Short Term Outcomes after Use of Intracardiac Bone Stem Cell Transplantation ...crimsonpublishersOJCHD
Short Term Outcomes after Use of Intracardiac Bone Stem Cell Transplantation for Management of Heart Failure: A Meta-Analysis by Rohit SL in Open Journal of Cardiology & Heart Diseases
Novel Method for Automated Analysis of Retinal Images: Results in Subjects wi...Mutiple Sclerosis
Michele Cavallari, Claudio Stamile, Renato Umeton, Francesco Calimeri, and Francesco Orzi
Morphological analysis of the retinal vessels by fundoscopy provides noninvasive means for detecting and staging systemic microvascular damage. However, full exploitation of fundoscopy in clinical settings is limited by paucity of quantitative, objective information obtainable through the observer-driven evaluations currently employed in routine practice. Here, we report on the development of a semiautomated, computer-based method to assess retinal vessel morphology. The method allows simultaneous and operator-independent quantitative assessment of arteriole-to-venule ratio, tortuosity index, and mean fractal dimension. The method was implemented in two conditions known for being associated with retinal vessel changes: hypertensive retinopathy and Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy (CADASIL). The results showed that our approach is effective in detecting and quantifying the retinal vessel abnormalities. Arteriole-to-venule ratio, tortuosity index, and mean fractal dimension were altered in the subjects with hypertensive retinopathy or CADASIL with respect to age- and gender-matched controls. The interrater reliability was excellent for all the three indices (intraclass correlation coefficient ≥ 85%). The method represents simple and highly reproducible means for discriminating pathological conditions characterized by morphological changes of retinal vessels. The advantages of our method include simultaneous and operator-independent assessment of different parameters and improved reliability of the measurements.
Syntax Score and its Relation to Lipoprotein a –Lp (a) and Extended Lipid Par...Premier Publishers
Syntax score is a semi-quantitative visual grading system for complex coronary artery disease based on angiography findings. We investigated whether the severity of coronary artery disease (Syntax score) correlates with Lipoprotein (a) {Lp (a)} value and lipid ratios.75 non-diabetic adult patients, having age below 55 years, who presented with Acute Coronary Syndrome (ACS) were included. Coronary angiography and Syntax Score calculation was done. Various lipid ratios and Lp(a) were correlated with syntax score. Out of 75 patients ,61 (81.33%) were males and 14 (18.67%) females, having mean age of 44.37years. Majority (49.34%) having age between 41-50 years. Those 49 (65.4%) had acute myocardial infarction,21 (28%) had unstable angina and 5(6.6%) had Non-ST-elevation myocardial infarction (NSTEMI).44(58.67%) patients had one, 18(24%) had two and 13 (17.33%) had three vessels disease.58 (77.33%) had syntax score ≤22 and 17 (26.67%) had ≥ 23. Statistically significant difference (p < 0.05) was found in mean values of Total cholesterol (TC), TC/HDL ratio, LDL, LDL/HDL and Non-HDL cholesterol in patients having syntax score> 23. Mean values of other parameters like LVEF (Left ventricular ejection fraction), ApoA-1, Apo B, Apo B/Apo A, Lp(a)/HDL did not differ in two groups. Lp(a) lipoprotein levels did not show any association with the syntax score and extent of coronary artery disease. This study of western Indian young non-diabetic patients having acute coronary syndrome found association of syntax score with high non-HDL, TC, TC/HDL, LDL, LDL/HDL values. It was not correlating with LP (a) levels.
Exercise stress echocardiography in patients with aortic stenosis: impact of baseline diastolic dysfunction and functional capacity on mortality and aortic valve replacement
Authors: Andrew N. Rassi, Wael AlJaroudi, Sahar Naderi, M Chadi Alraies, Venu Menon, Leonardo Rodriguez, Richard Grimm, Brian Griffin, Wael A. Jaber
http://www.thecdt.org/article/view/2855
Serum Uric Acid and Outcome after Acute Ischemic Stroke: PREMIER StudyErwin Chiquete, MD, PhD
Background: Current evidence shows that uric acid is a potent
antioxidant whose serum concentration increases rapidly
after acute ischemic stroke (AIS). Nevertheless, the relationship
between serum uric acid (SUA) levels and AIS
outcome remains debatable. We aimed to describe the
prognostic significance of SUA in AIS. Methods: We studied
463 patients (52% men, mean age 68 years, 13% with glomerular
filtration rate <60 />2) at 30 days, or with
any outcome measure at 3, 6 or 12 months poststroke. After
adjustment for age, gender, stroke type and severity (NIHSS
<9),><24 h. Conclusions: A low SUA
concentration is modestly associated with a very good
short-term outcome. Our findings support the hypothesis
that SUA is more a marker of the magnitude of the cerebral
infarction than an independent predictor of stroke outcome.
Compliance of pharmacological treatment for non-ST-elevation acute coronary syndromes with contemporary guidelines: influence on outcomes
Authors: Hélder Dores, Carlos Aguiar, Jorge Ferreira, Jorge Mimoso, Sílvia Monteiro, Filipe Seixo, José Ferreira Santos, On behalf of Portuguese Registry on Acute Coronary Syndromes (ProACS) Investigators
Short Term Outcomes after Use of Intracardiac Bone Stem Cell Transplantation ...crimsonpublishersOJCHD
Short Term Outcomes after Use of Intracardiac Bone Stem Cell Transplantation for Management of Heart Failure: A Meta-Analysis by Rohit SL in Open Journal of Cardiology & Heart Diseases
Novel Method for Automated Analysis of Retinal Images: Results in Subjects wi...Mutiple Sclerosis
Michele Cavallari, Claudio Stamile, Renato Umeton, Francesco Calimeri, and Francesco Orzi
Morphological analysis of the retinal vessels by fundoscopy provides noninvasive means for detecting and staging systemic microvascular damage. However, full exploitation of fundoscopy in clinical settings is limited by paucity of quantitative, objective information obtainable through the observer-driven evaluations currently employed in routine practice. Here, we report on the development of a semiautomated, computer-based method to assess retinal vessel morphology. The method allows simultaneous and operator-independent quantitative assessment of arteriole-to-venule ratio, tortuosity index, and mean fractal dimension. The method was implemented in two conditions known for being associated with retinal vessel changes: hypertensive retinopathy and Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy (CADASIL). The results showed that our approach is effective in detecting and quantifying the retinal vessel abnormalities. Arteriole-to-venule ratio, tortuosity index, and mean fractal dimension were altered in the subjects with hypertensive retinopathy or CADASIL with respect to age- and gender-matched controls. The interrater reliability was excellent for all the three indices (intraclass correlation coefficient ≥ 85%). The method represents simple and highly reproducible means for discriminating pathological conditions characterized by morphological changes of retinal vessels. The advantages of our method include simultaneous and operator-independent assessment of different parameters and improved reliability of the measurements.
Syntax Score and its Relation to Lipoprotein a –Lp (a) and Extended Lipid Par...Premier Publishers
Syntax score is a semi-quantitative visual grading system for complex coronary artery disease based on angiography findings. We investigated whether the severity of coronary artery disease (Syntax score) correlates with Lipoprotein (a) {Lp (a)} value and lipid ratios.75 non-diabetic adult patients, having age below 55 years, who presented with Acute Coronary Syndrome (ACS) were included. Coronary angiography and Syntax Score calculation was done. Various lipid ratios and Lp(a) were correlated with syntax score. Out of 75 patients ,61 (81.33%) were males and 14 (18.67%) females, having mean age of 44.37years. Majority (49.34%) having age between 41-50 years. Those 49 (65.4%) had acute myocardial infarction,21 (28%) had unstable angina and 5(6.6%) had Non-ST-elevation myocardial infarction (NSTEMI).44(58.67%) patients had one, 18(24%) had two and 13 (17.33%) had three vessels disease.58 (77.33%) had syntax score ≤22 and 17 (26.67%) had ≥ 23. Statistically significant difference (p < 0.05) was found in mean values of Total cholesterol (TC), TC/HDL ratio, LDL, LDL/HDL and Non-HDL cholesterol in patients having syntax score> 23. Mean values of other parameters like LVEF (Left ventricular ejection fraction), ApoA-1, Apo B, Apo B/Apo A, Lp(a)/HDL did not differ in two groups. Lp(a) lipoprotein levels did not show any association with the syntax score and extent of coronary artery disease. This study of western Indian young non-diabetic patients having acute coronary syndrome found association of syntax score with high non-HDL, TC, TC/HDL, LDL, LDL/HDL values. It was not correlating with LP (a) levels.
Prevalence and predictors of pulmonary arterial hypertension in a sample of i...
Similar to Increased risk of ischemic stroke associated with new onset atrial fibrillation complicating acute coronary syndrome- a systematic review and meta-analysis
Exercise stress echocardiography in patients with aortic stenosis: impact of baseline diastolic dysfunction and functional capacity on mortality and aortic valve replacement
Authors: Andrew N. Rassi, Wael AlJaroudi, Sahar Naderi, M Chadi Alraies, Venu Menon, Leonardo Rodriguez, Richard Grimm, Brian Griffin, Wael A. Jaber
http://www.thecdt.org/article/view/2855
Comparison of clinical, radiological and outcome characteristics of ischemic ...MIMS Hospital
Here is the latest publication from the department of Neurology in the Journal of Neurology Research, titled, ’Comparison of Clinical, Radiological and Outcome Characteristics of Ischemic Strokes in Different Vascular Territories’ authored by Ashraf V Valappila, c, Dhanya T Janardhanana, Praveenkumar Raghunatha, Abdulla Cherayakkatb, Girija ASa
Predictive value of exercise myocardial perfusion imaging in the Medicare population: the impact of the ability to exercise
Authors: Deborah H. Kwon, Venu Menon, Penny Houghtaling, Elizabeth Lieber, Richard C. Brunken, Manuel D. Cerqueira, Wael A. Jaber
The Impact of Lymph Node Dissection on Survival in Intermediate- and High-Ris...semualkaira
Aimed to evaluate the therapeutic effect of pelvic lymph node dissection (PLND) on survival and determine the predictors of lymph node involvement (LNI) in patients with intermediate- or high-risk prostate cancer (PCa) treated with Radical Prostatectomy
The Impact of Lymph Node Dissection on Survival in Intermediate- and High-Ris...semualkaira
Aimed to evaluate the therapeutic effect of pelvic lymph node dissection (PLND) on survival and determine the
predictors of lymph node involvement (LNI) in patients with intermediate- or high-risk prostate cancer (PCa) treated with Radical
Prostatectomy
The Association of Left Atrial Enlargement in Different Subtypes of Ischemic ...pateldrona
LAE related rhythm disturbance that characterize atrial fibrillation is also associated with other atrial derangement such as endothelial dysfunction and impaired myocyte function
The Association of Left Atrial Enlargement in Different Subtypes of Ischemic ...AnonIshanvi
LAE related rhythm disturbance that characterize atrial fibrillation is also associated with other atrial derangement such as endothelial dysfunction and impaired myocyte function. The role of LAE in acute cerebral infarction patient is not sufficiently described in literature.
The Association of Left Atrial Enlargement in Different Subtypes of Ischemic ...komalicarol
LAE related rhythm disturbance that characterize atrial fibrillation is
also associated with other atrial derangement such as endothelial dysfunction and impaired myocyte
function. The role of LAE in acute cerebral infarction patient is not sufficiently described in literature.
Hence of this study was undertaken to look for the frequency of left atrial enlargement in acute stroke
subtypes.
Similar to Increased risk of ischemic stroke associated with new onset atrial fibrillation complicating acute coronary syndrome- a systematic review and meta-analysis (20)
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Ve...kevinkariuki227
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
Title: Sense of Smell
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
ARTIFICIAL INTELLIGENCE IN HEALTHCARE.pdfAnujkumaranit
Artificial intelligence (AI) refers to the simulation of human intelligence processes by machines, especially computer systems. It encompasses tasks such as learning, reasoning, problem-solving, perception, and language understanding. AI technologies are revolutionizing various fields, from healthcare to finance, by enabling machines to perform tasks that typically require human intelligence.
New Drug Discovery and Development .....NEHA GUPTA
The "New Drug Discovery and Development" process involves the identification, design, testing, and manufacturing of novel pharmaceutical compounds with the aim of introducing new and improved treatments for various medical conditions. This comprehensive endeavor encompasses various stages, including target identification, preclinical studies, clinical trials, regulatory approval, and post-market surveillance. It involves multidisciplinary collaboration among scientists, researchers, clinicians, regulatory experts, and pharmaceutical companies to bring innovative therapies to market and address unmet medical needs.
Explore natural remedies for syphilis treatment in Singapore. Discover alternative therapies, herbal remedies, and lifestyle changes that may complement conventional treatments. Learn about holistic approaches to managing syphilis symptoms and supporting overall health.
Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
Lung Cancer: Artificial Intelligence, Synergetics, Complex System Analysis, S...Oleg Kshivets
RESULTS: Overall life span (LS) was 2252.1±1742.5 days and cumulative 5-year survival (5YS) reached 73.2%, 10 years – 64.8%, 20 years – 42.5%. 513 LCP lived more than 5 years (LS=3124.6±1525.6 days), 148 LCP – more than 10 years (LS=5054.4±1504.1 days).199 LCP died because of LC (LS=562.7±374.5 days). 5YS of LCP after bi/lobectomies was significantly superior in comparison with LCP after pneumonectomies (78.1% vs.63.7%, P=0.00001 by log-rank test). AT significantly improved 5YS (66.3% vs. 34.8%) (P=0.00000 by log-rank test) only for LCP with N1-2. Cox modeling displayed that 5YS of LCP significantly depended on: phase transition (PT) early-invasive LC in terms of synergetics, PT N0—N12, cell ratio factors (ratio between cancer cells- CC and blood cells subpopulations), G1-3, histology, glucose, AT, blood cell circuit, prothrombin index, heparin tolerance, recalcification time (P=0.000-0.038). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and PT early-invasive LC (rank=1), PT N0—N12 (rank=2), thrombocytes/CC (3), erythrocytes/CC (4), eosinophils/CC (5), healthy cells/CC (6), lymphocytes/CC (7), segmented neutrophils/CC (8), stick neutrophils/CC (9), monocytes/CC (10); leucocytes/CC (11). Correct prediction of 5YS was 100% by neural networks computing (area under ROC curve=1.0; error=0.0).
CONCLUSIONS: 5YS of LCP after radical procedures significantly depended on: 1) PT early-invasive cancer; 2) PT N0--N12; 3) cell ratio factors; 4) blood cell circuit; 5) biochemical factors; 6) hemostasis system; 7) AT; 8) LC characteristics; 9) LC cell dynamics; 10) surgery type: lobectomy/pneumonectomy; 11) anthropometric data. Optimal diagnosis and treatment strategies for LC are: 1) screening and early detection of LC; 2) availability of experienced thoracic surgeons because of complexity of radical procedures; 3) aggressive en block surgery and adequate lymph node dissection for completeness; 4) precise prediction; 5) adjuvant chemoimmunoradiotherapy for LCP with unfavorable prognosis.
New Directions in Targeted Therapeutic Approaches for Older Adults With Mantl...i3 Health
i3 Health is pleased to make the speaker slides from this activity available for use as a non-accredited self-study or teaching resource.
This slide deck presented by Dr. Kami Maddocks, Professor-Clinical in the Division of Hematology and
Associate Division Director for Ambulatory Operations
The Ohio State University Comprehensive Cancer Center, will provide insight into new directions in targeted therapeutic approaches for older adults with mantle cell lymphoma.
STATEMENT OF NEED
Mantle cell lymphoma (MCL) is a rare, aggressive B-cell non-Hodgkin lymphoma (NHL) accounting for 5% to 7% of all lymphomas. Its prognosis ranges from indolent disease that does not require treatment for years to very aggressive disease, which is associated with poor survival (Silkenstedt et al, 2021). Typically, MCL is diagnosed at advanced stage and in older patients who cannot tolerate intensive therapy (NCCN, 2022). Although recent advances have slightly increased remission rates, recurrence and relapse remain very common, leading to a median overall survival between 3 and 6 years (LLS, 2021). Though there are several effective options, progress is still needed towards establishing an accepted frontline approach for MCL (Castellino et al, 2022). Treatment selection and management of MCL are complicated by the heterogeneity of prognosis, advanced age and comorbidities of patients, and lack of an established standard approach for treatment, making it vital that clinicians be familiar with the latest research and advances in this area. In this activity chaired by Michael Wang, MD, Professor in the Department of Lymphoma & Myeloma at MD Anderson Cancer Center, expert faculty will discuss prognostic factors informing treatment, the promising results of recent trials in new therapeutic approaches, and the implications of treatment resistance in therapeutic selection for MCL.
Target Audience
Hematology/oncology fellows, attending faculty, and other health care professionals involved in the treatment of patients with mantle cell lymphoma (MCL).
Learning Objectives
1.) Identify clinical and biological prognostic factors that can guide treatment decision making for older adults with MCL
2.) Evaluate emerging data on targeted therapeutic approaches for treatment-naive and relapsed/refractory MCL and their applicability to older adults
3.) Assess mechanisms of resistance to targeted therapies for MCL and their implications for treatment selection
Report Back from SGO 2024: What’s the Latest in Cervical Cancer?bkling
Are you curious about what’s new in cervical cancer research or unsure what the findings mean? Join Dr. Emily Ko, a gynecologic oncologist at Penn Medicine, to learn about the latest updates from the Society of Gynecologic Oncology (SGO) 2024 Annual Meeting on Women’s Cancer. Dr. Ko will discuss what the research presented at the conference means for you and answer your questions about the new developments.
- Video recording of this lecture in English language: https://youtu.be/lK81BzxMqdo
- Video recording of this lecture in Arabic language: https://youtu.be/Ve4P0COk9OI
- Link to download the book free: https://nephrotube.blogspot.com/p/nephrotube-nephrology-books.html
- Link to NephroTube website: www.NephroTube.com
- Link to NephroTube social media accounts: https://nephrotube.blogspot.com/p/join-nephrotube-on-social-media.html
Pulmonary Thromboembolism - etilogy, types, medical- Surgical and nursing man...VarunMahajani
Disruption of blood supply to lung alveoli due to blockage of one or more pulmonary blood vessels is called as Pulmonary thromboembolism. In this presentation we will discuss its causes, types and its management in depth.
These lecture slides, by Dr Sidra Arshad, offer a quick overview of physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar leads (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
Novas diretrizes da OMS para os cuidados perinatais de mais qualidade
Increased risk of ischemic stroke associated with new onset atrial fibrillation complicating acute coronary syndrome- a systematic review and meta-analysis
2. “ischemic stroke”, “brain infarction”, without any language limitation. The reference lists of
retrieved studies and prior reviews were also screened for other eligible studies.
Studies considered in our study were randomized controlled trials (RCTs) and cohort
studies comparing the ischemic stroke risk between patients with NOAF and sinus rhythm
(SR) after index ACS. We excluded studies that did not report the number of stroke events
or their risk estimates and those in which no distinction could be made between hemor-
rhagic and ischemic stroke. In addition, “reviews”, “editorials”, “letters”, “case reports”,
“conference abstracts”, and “case-control studies” were also excluded.
We classified NOAF as transient NOAF, persisting NOAF or any NOAF. NOAF was
defined as AF occurring for the first time after the ACS with no history of AF in medical re-
cords. Transient NOAF was defined as NOAF occurring during hospitalization with SR at
discharge. Persisting NOAF was defined as NOAF occurring during hospitalization with
AF at discharge. If no distinction about the status of NOAF at discharge was made, NOAF
was classified as any NOAF.
2.2. Data extraction
Four reviewers working independently and using a standardized form extracted data
from all eligible studies, including baseline characteristics of studies and patients and the
number of ischemic stroke events or their risk estimates. If several risk estimates were
available in the same study, the most fully adjusted result corresponding to the longest
follow-up duration was extracted. We further tried to contact corresponding authors of
studies for missing data through E-mail. Discrepancies were resolved by consensus.
2.3. Quality evaluation
For the purpose of our study, we dealt with all eligible RCTs as cohort studies, with the
population being treated as a whole without considering the randomization process. The
Newcastle-Ottawa Scale (NOS) was used to evaluate the quality of studies. A quality score
was calculated according to three major components: selection (0–4 points), comparabil-
ity (0–2 points) and outcome (0–3 points) [17]. Notably, whether the individual compo-
nents in the CHA2DS2-VASc score had been adjusted was used for comparability
assessment. The age was chosen as the major risk factor, and other risk factors were
heart failure, hypertension, diabetes, previous stroke/transient ischemic attack (TIA), vas-
cular disease and female sex (Table S1 [supplements]). Good comparability was consid-
ered if one or two stars were obtained. A total score of seven or more was considered as
a high-quality study.
2.4. Outcomes and subgroup analyses
The primary study endpoint was the ischemic stroke. TIA would be an alternative
when ischemic stroke was not reported. Subgroup analyses were performed to compare
the outcomes according to study type, sample size, geographic location, comparability,
and publication date. In addition, we explored the risk of ischemic stroke in patients
with either ST-segment elevation myocardial infarction (STEMI) or transient NOAF.
2.5. Sensitivity analyses
To confirm the robustness of our analyses, several sensitivity analyses were per-
formed including: 1) statistical models (fixed- and random-effects); 2) limited to studies
with large sample (≥10,000), with all components in the CHA2DS2-VASc score being ad-
justed, conducted in multiple centers, or in which ischemic stroke events were measured
after discharge; 3) exclusion of studies with the largest sample or the most outlier result,
with atrial flutter being included, or in which coronary artery bypass grafting surgery was
performed.
2.6. Statistical analysis
Descriptive analyses were demonstrated as frequencies for categorical variables and
standardized means (standard deviations) or median (interquartile) for continuous vari-
ables. We used random-effects model described by DerSimonian and Laird to calculate
pooled risk ratios (RR) and 95% confidence intervals (CI) [18]. Heterogeneity was evalu-
ated with the χ2
based-Q-statistic test, and I2
was used to quantify the inconsistency. I2
b 25%, 25%–50% and N50% suggested low, moderate and high heterogeneity, respectively.
Univariate meta-regression models were used to determine the interactions between sub-
groups. Publication bias was evaluated using Egger's test [19]. A value of p b 0.05 (2 sided)
was considered statistically significant. All analyses were performed using Stata software
version 14 (StataCorp, College Station, Texas).
3. Results
3.1. Characteristics of the included studies
As demonstrated in Fig. 1, our initial literature search identified 1198
studies. After title and abstract screening, 1153 studies were excluded
and full-text review retrieved 45 studies; 31 studies were further ex-
cluded according to exclusion criteria and 14 studies including 5 retro-
spectives from RCTs [20–24] and 9 cohort studies [12–15,25–29] were
available for the final analysis. Atrial flutter and fibrillation were treated
as a whole in 4 studies [15,23,24,29] and 6 studies only included STEMI
patients [12,20,21,23,24,27]. Most of NOAF events were evaluated dur-
ing hospitalization except for 3 studies in which on-admission NOAF
were included [15,25,26]. All studies had reported the ischemic stroke
except for one in which only TIA was available [24]. Table 1 showed
the details of included studies.
3.2. Characteristics of the included patients
The incidence of NOAF was 7.4% (95% CI: 5.8%–9.0%). Patients with
NOAF were older (70.1 ± 3.4 years vs 61.9 ± 2.8 years), more likely to
be women (31.8 ± 4.2% vs 24.5 ± 4.5%) and had more baseline co-
existing conditions (e.g., hypertension, diabetes, myocardial infarction,
etc.) than those with SR. In addition, the CHA2DS2-VASc score was sig-
nificantly higher in patients with NOAF (4.2 ± 0.1 vs 3.1 ± 0.2). Fur-
thermore, patients with NOAF were more likely to receive oral
anticoagulants (17.0% vs 4.0%) and less likely to receive aspirin (84.8%
vs 87.3%) or P2Y12 inhibitors (41.6% vs 49.0%) at discharge. Details of pa-
tients' characteristics were demonstrated in Table 2.
3.3. Quality evaluation
Quality evaluation by NOS revealed a median score of 7 (range, 4–9).
Furthermore, six studies with good comparability demonstrated an ex-
cellent quality (median 8, range 7–9), whereas the other 8 studies only
had a median score of 6 (range, 4–6) (Table S2 [supplements]).
Accounting for the high heterogeneity from the pooled result of all el-
igible studies, and the origins of which could not be determined by
performing subgroup analyses and meta-regression analyses (Table S3
[supplements]), we decided to report only stroke risk estimates from 6
studies that with good comparability and high quality [13,21,23,27–29].
3.4. Ischemic stroke associated with NOAF complicating ACS
The incidence of ischemic stroke after ACS was 1.6% (95% CI: 0.5%–
2.8%), and ischemic stroke rates at three periods: in-hospital, 1 month
to 1 year and ≥1 year were 0.9%, 1.2%, and 3.7%, respectively. Post-ACS
NOAF was associated with an increased risk of ischemic stroke com-
pared with those in SR (RR: 2.84; 95% CI: 1.91–4.23; p b 0.01) (Fig.
2A). After removing the GRACE registry [29], only a low heterogeneity
was observed and the significance of the pooled result remained (RR:
3.21; 95% CI: 2.36–4.37; p b 0.01) (Fig. 2B). Of note, in the GRACE regis-
try, only in-hospital ischemic stroke events were evaluated. No risk of
publication bias was showed by the Egger's test (p = 0.15).
3.5. Subgroup and sensitivity analyses
In a subgroup analysis of patients with STEMI [21,23,27], NOAF was
significantly associated with an increased risk of ischemic stroke (RR:
4.01; 95% CI: 2.61–6.18; p b 0.01) (Fig. S1A [supplements]). When sub-
group analysis was performed with respect to transient NOAF
[13,27,28], the RR of ischemic stroke was 3.05 (95% CI: 1.63–5.70; p b
0.01) (Fig. S1B [supplements]).
We conducted a sensitivity analysis pooling studies in which all
components in the CHA2DS2-VASc score had been adjusted
[13,21,28,29], the detrimental impact of post-ACS NOAF was still of
great significance (RR: 2.32, 95% CI: 1.53–3.52; p b 0.01). Details of sen-
sitivity analyses were demonstrated in Fig. S2 (supplements).
4. Discussion
4.1. Main findings
The current meta-analysis demonstrates the mean incidence of is-
chemic stroke after ACS is 1.6%. NOAF complicating ACS is significantly
2 J. Luo et al. / International Journal of Cardiology xxx (2017) xxx–xxx
Please cite this article as: J. Luo, et al., Increased risk of ischemic stroke associated with new-onset atrial fibrillation complicating acute coronary
syndrome: A systematic..., Int J Cardiol (2017), https://doi.org/10.1016/j.ijcard.2018.04.096
3. associated with an increased risk of ischemic stroke, especially for pa-
tients with STEMI, after adjustment for several important ischemic
stroke risk factors. Moreover, transient NOAF is even associated with is-
chemic stroke events.
4.2. Incidence of ischemic stroke after ACS
Ischemic stroke is an infrequent clinical event after ACS. In a previ-
ous meta-analysis performed by Witt et al., the ischemic stroke rates
at hospital stay (1.1%) and 1 month (1.2%) were similar to our study
(0.9% and 1.2%, respectively) [30]. However, as we analyzed the mean
cumulative rate of stroke over 1 year (mean follow-up: 45 months) as
a whole, it was not surprising to observe such a higher ischemic stroke
rate (3.7%) in our study compared with that in Witt et al. (2.1% at 1
year).
4.3. NOAF complicating ACS and ischemic stroke
NOAF is one of the most common arrhythmias after ACS with a re-
ported incidence ranging from 4% to 19% [8]. Although the increased
mortality associated with the post-ACS NOAF has been validated by nu-
merous studies [8,29], it is still unknown whether the post-ACS NOAF
has a similar influence on ischemic stroke. In a previous study, Zusman
et al. showed that the NOAF following myocardial infarction was associ-
ated with a nearly 35-fold increased risk of stroke during follow-up
(mean: 41 months; hazard ratio [HR]: 34.6, 95% CI: 4.0–296.8) [10].
However, the limited number of patients and events (14 events out of
300 patients) made their results seem to be less precise, as evidenced
by such a wide 95% CI. In contrast, with the use of data from Danish Na-
tional Patient Registry, Bang et al. conducted a retrospective analysis
with a total of 89,703 patients with MI being analyzed and at the end
of 5-year follow-up, NOAF complicating myocardial infarction was dem-
onstrated as an independent predictor for fatal or non-fatal stroke (HR:
2.34, 95% CI: 2.12–2.57 and HR: 2.47, 95% CI: 2.24–2.73, respectively)
[31]. Nevertheless, the lack of data on stroke etiology made a more com-
prehensive understanding of the prognostic implication of NOAF un-
available. Differently, in the present meta-analysis with a relatively
large population, we can validate that the NOAF was significantly asso-
ciated with an increased risk of ischemic stroke given all stroke events
could be clearly categorized as ischemic origins. To our best knowledge,
this is the first meta-analysis of clinical studies on the ischemic stroke
risk of NOAF after ACS
Despite the strong association between post-ACS NOAF and ische-
mic stroke events, it remains unclear whether the NOAF is a “causal
risk factor” or rather a “risk indicator” for ischemic stroke after ACS. As
exposure always precedes the outcome, the temporal relationship is a
pivotal factor in causality establishment [32]. For example, in the
ASSERT (Asymptomatic Atrial Fibrillation and Stroke Evaluation in Pace-
maker Patients and the Atrial Fibrillation Reduction Atrial Pacing Trial)
study, Brambatti et al. demonstrated that only 8% AF events were de-
tected within 30 days before index stroke with the use of implanted de-
vices, 16% of stroke victims had their first AF event after strokes.
Fig. 1. PRISMA flow diagram of included studies.
3J. Luo et al. / International Journal of Cardiology xxx (2017) xxx–xxx
Please cite this article as: J. Luo, et al., Increased risk of ischemic stroke associated with new-onset atrial fibrillation complicating acute coronary
syndrome: A systematic..., Int J Cardiol (2017), https://doi.org/10.1016/j.ijcard.2018.04.096
4. Table 1
Characteristics of included studies.
Study Year Country Single/multicenter Years of
study
Total/NOAF
population, n
NOAF types1
NOAF evaluation ACS
types
Endpoints Timing of endpoint
measurement
In-hospital
fibrinolysis, %
(NOAF/SR)
In-hospital PCI, %
(NOAF/SR)
Retrospective from RCTs
HORIZON AMI Trial [23] 2014 United States Multicenter 2005–2007 3281/147 Any2
In-hospital STEMI IS 3 years 0/0 100/100
APEX-AMI Trial [21] 2009 Multination Multicenter 2004–2006 5742/342 Any In-hospital STEMI IS 3 months 0/0 100/100
GISSI-3 Trial [22] 2001 Italy Multicenter 1991–1993 17,749/1386 Any In-hospital MI IS In-hospital 65/73 NR
GUSTO-III Trial [24] 2000 Multination Multicenter 1995–1997 13,858/906 Any2
In-hospital STEMI TIA In-hospital 100/100 0/0
GUSTO-I Trial [20] 1997 Multination Multicenter 1990–1993 40,891/3254 Any In-hospital STEMI IS In-hospital 100/100 0/0
Cohort studies
SWEDEHEART Registry [28] 2016 Sweden Multicenter 2000–2009 155,071/11742 Any/transient/persistent In-hospital MI IS 3 months NR 24/48
Braga et al. [25] 2015 Portugal Single 2009–2012 1373/142 Any On-admission/in-hospital ACS IS 3 months NR 55/69
González et al. [26] 2015 Mexico Single 2006–2013 6705/220 Any On-admission/in-hospital ACS IS In-hospital 5/5 18/164
ARIAM Registry [15] 2014 Spain Multicenter 2001–2011 39,237/1568 Any2
On-admission/in-hospital ACS IS In-hospital 60/58 66/69
Viliani et al. [12] 2012 Spain Single 2004–2008 913/92 Any/transient/persistent In-hospital STEMI IS In-hospital 0/0 100/100
Bishara et al. [13] 2011 Israel Single 2000–2009 2402/174 Transient In-hospital MI IS and TIA 1 year NR 43/52
Asanin et al. [14] 2009 Serbia Single 1996–1998 3210/320 Transient In-hospital MI IS 7 years3
25/24 NR
Siu et al. [27] 2007 China Single 1997–2005 431/59 Transient In-hospital STEMI IS 38.5 months3
39/32 17/134
GRACE Registry [29] 2003 Multination Multicenter 1999–2001 21,785/1221 Any2
In-hospital ACS IS In-hospital 50/55 25/32
AMI = acute myocardial infarction; ACS = acute coronary syndrome; AF = atrial fibrillation; AMI = acute myocardial infarction; IS = ischemic stroke; NOAF = new-onset atrial fibrillation; NR = not report; PCI = percutaneous coronary interven-
tion; STEMI=ST-segment elevation myocardial infarction; RCT = randomized controlled trial; SR = sinus rhythm; TIA = transient ischemic attack.
1
Transient AF means NOAF only presents during hospital stay with sinus rhythm at discharge; Persistent AF means NOAF presents both during hospital stay and at discharge; Any AF means NOAF cannot be categorized as transient or persistent
derives;
2
Studies include atrial flutter;
3
Mean follow-up durations;
4
Data represent primary PCI.
4J.Luoetal./InternationalJournalofCardiologyxxx(2017)xxx–xxx
Pleasecitethisarticleas:J.Luo,etal.,Increasedriskofischemicstrokeassociatedwithnew-onsetatrialfibrillationcomplicatingacutecoronary
syndrome:Asystematic...,IntJCardiol(2017),https://doi.org/10.1016/j.ijcard.2018.04.096
5. Therefore, they drew a conclusion that subclinical AF may simply be a
risk marker of stroke due to the lack of confirmed temporal relationship
[33]. Differently, as reported in the CRYSTAL AF (The Cryptogenic Stroke
and Underlying AF) trial, although cryptogenic stroke occurred before
the AF detection, Sanna et al. still recognized the AF as the underlying
cause of observed cryptogenic stroke given the high HR of 6.4–8.8 for
AF detection [34], thus also indicating the importance of association
strength. In the present study, we performed a sensitivity analysis in
which all ischemic stroke events were measured after discharge to en-
sure the NOAF occurred before the ischemic stroke, the pooled result
demonstrated that the NOAF was associated with almost a 3.2-fold in-
creased risk of subsequent ischemic stroke (Fig. S2 [supplements]),
thus also revealing a strong association between them.
Several underlying mechanisms have been proposed to explain the
links between NOAF and ischemic stroke, including cardiac emboliza-
tion, worsening heart failure [14], recurrent AF susceptibility
[13,14,27] and coexisting conditions (e.g., hypertension, diabetes [4,5],
etc.). Notably, the recurrent AF may be a major pathophysiological
mechanism by which NOAF significantly increases the risk of stroke,
as shown in the Asanin et al., it was the recurrence of AF during
follow-up (adjusted RR: 5.08, 95% CI: 1.92–13.42, p = 0.001) rather
than initial NOAF that was independently associated with long-term
stroke events after adjustment for confounding factors [14].
However, there are still some pitfalls in establishing unequivocal
causality. First, the scarcity of clinical data evaluating the correlation be-
tween different NOAF burdens (e.g., paroxysmal, persistent or perma-
nent) and ischemic stroke risk made the dose-response relationship
cannot be validated. Nevertheless, we still could speculate that such a
dose-response relationship might exist, as was reported in the Batra
et al., the risk estimate of stroke for persistent NOAF (HR: 2.77, 95% CI:
2.03–3.77) was higher than that for transient NOAF (HR: 1.87, 95% CI:
Table 2
Baseline characteristics of participants.
Baseline variables Total population
(n)
NOAF SR p
value
Age, years 275,025 70.1 ± 3.4 61.9 ± 2.8 b0.001
Female sex, % 88,875 31.8 ± 4.2 24.5 ± 4.5 b0.001
BMI, kg/m2
11,160 27.8 ± 0.5 27.2 ± 0.1 0.154
Hypertension, % 139,137 56.5 ± 11.0 48.8 ± 9.6 b0.001
Diabetes, % 63,838 27.1 ± 7.9 22.7 ± 7.5 b0.001
Hyperlipidemia, % 19,267 40.7 ± 7.9 44.6 ± 6.5 b0.001
Current smoker, % 46,618 28.0 ± 12.6 36.8 ± 11.0 b0.001
Previous MI, % 62,735 20.6 ± 6.2 18.1 ± 6.8 b0.001
Previous
revascularization, %
8688 9.5 ± 3.5 10.4 ± 3.3 b0.001
Previous stroke/TIA, % 13,660 8.1 ± 3.2 4.9 ± 2.0 b0.001
Previous HF, % 18,639 13.0
(7.5–29.5)
9.0
(3.5–14.5)
b0.001
HF at admission1
, % 22,421 34.3 ± 13.7 15.6 ± 5.2 b0.001
LVEF, % 88,646 46.2 ± 2.9 50.0 ± 1.4 0.016
STEMI, % 167,705 78.5 ± 24.4 76.4 ± 26.6 b0.001
CHA2DS2-VASc score 3718 4.2 ± 0.1 3.1 ± 0.2 0.024
Fibrinolysis, % 82,941 55.5 ± 33.5 55.9 ± 34.6 b0.001
PCI treatment, % 100,081 54.8 ± 35.0 59.8 ± 33.5 b0.001
Aspirin, % 207,592 84.8 ± 17.7 87.3 ± 21.2 b0.001
P2Y12 inhibitors, % 121,304 41.6 ± 27.6 49.0 ± 32.5 b0.001
Oral-anticoagulant, % 9414 17.0
(6.5–19.0)
4.0
(2.5–4.5)
b0.001
Statins, % 14,974 61.6 ± 20.9 65.9 ± 21.7 b0.001
ACEI/ARB, % 42,546 57.9 ± 21.9 55.8 ± 26.3 b0.001
Values are demonstrated as n, mean ± SD or median (interquartile).
ACEI = angiotensin converting enzyme inhibitors; ARB = angiotensin-II receptor
blockers; BMI = body mass index; CHA2DS2-VASc = congestive heart failure, hyperten-
sion, age ≥ 75 yrs, diabetes, previous stroke and/or TIA, vascular diseases, age 65–74 yrs,
female gender; HF = heart failure; LVEF = left ventricular ejection fraction; MI = myo-
cardial infarction; Other abbreviations refer to Table 1.
1
HF at admission refers to Killip class N I.
Fig. 2. Summary forest plot of ischemic stroke risk associated with NOAF complicating ACS. (A) Ischemic stroke risk and NOAF after ACS. (B) Ischemic stroke risk and NOAF after MI. The size
of each square is proportional to the study's weight. The solid line across the square represents the 95% CI. The dotted line in the forest plot shows random-effects pooled risk estimate. ACS
= acute coronary syndrome; CI = confidence interval; MI = myocardial infarction; NOAF = new-onset atrial fibrillation; RR = risk ratio.
5J. Luo et al. / International Journal of Cardiology xxx (2017) xxx–xxx
Please cite this article as: J. Luo, et al., Increased risk of ischemic stroke associated with new-onset atrial fibrillation complicating acute coronary
syndrome: A systematic..., Int J Cardiol (2017), https://doi.org/10.1016/j.ijcard.2018.04.096
6. 1.33–2.63) when compared with SR, respectively [28]. Second, neither
has RCT been conducted to evaluate the benefits of post-ACS NOAF
treatment on subsequent ischemic stroke nor are animal models or lab-
oratory findings available to validate the association between post-ACS
NOAF and ischemic stroke. Taken together, the hypothesis that post-
ACS NOAF is a risk factor for ischemic stroke is very much alive and vi-
able, but a great deal of work involving both basic research and specifi-
cally designed RCT still needs to be done.
4.4. NOAF complicating ACS and antithrombotic strategy
Given the fact that NOAF complicating ACS is significantly associated
with an increased risk of ischemic stroke, anticoagulation therapy may
be effective in reducing stroke risk and improving mortality [14,27]. In
an observational study with respect to transient NOAF after myocardial
infarction, Bishara et al. reported the risk estimate for stroke/TIA in pa-
tients receiving antiplatelet agents (HR: 3.28,95% CI: 1.82–5.93) was
higher than that in those receiving oral-anticoagulants (HR: 1.97, 95%
CI: 0.48–8.12) [13]. By contrast, Tangelder et al. demonstrated that com-
pared with aspirin plus placebo, a dual-antithrombotic therapy com-
posed of aspirin and ximelagatran was not associated with a
decreased risk of ischemic stroke (HR: 0.24; 95% CI: 0.02–2.30) [35].
However, as the present meta-analysis was not made to evaluate the
benefits of anticoagulation therapy on stroke prevention with respect
to the post-ACS NOAF, further studies are warranted to explore the op-
timal antithrombotic strategy in this setting.
4.5. Limitations
The major limitation was including observational data from ran-
domized trials and cohort studies for the purpose of our work, which
could subject this analysis to potential bias. Second, due to the lack of
patient-level data, we failed to test for interactions at the patient-level
covariates. Third, although all included studies had stated that patients
with a medical history of AF were excluded, the possibility of asymp-
tomatic AF episodes before ACS should be noted, which might result
in an overestimation of the ischemic stroke risk associated with post-
ACS NOAF given the confirmed ischemic stroke susceptibility of silent
AF [36]. In fact, this is an inherent limitation for all studies on the topic
of NOAF. However, accounting for the better detection of silent AF in
the contemporary clinical reality [37], as well as the relatively lower
prevalence and incidence of subclinical AF in patients without a medical
history of AF compared with those unselected patients [38], the poten-
tial misclassification of NOAF might has little influence on the interpre-
tation of our pooled results. Fourth, since the management of post-ACS
NOAF regarding either anticoagulation or cardioversion therapy during
the follow-up period had not been reported, we could not estimate their
effects on the risk of subsequent stroke. Finally, we also could not eval-
uate the influence of different NOAF burdens on ischemic stroke risk be-
cause no data were available in our study.
5. Conclusions
NOAF complicating ACS is significantly associated with an increased
risk of ischemic stroke, especially for patients with STEMI, even after ad-
justment for several important ischemic stroke risk factors. Therefore,
closer attention with respect to stroke prevention should be paid to pa-
tients with NOAF after index ACS.
Funding
This work was supported by the National Natural Science Founda-
tion of China [grant numbers 81270193, 30800466] to Dr. Yidong Wei.
Conflict of interest
The authors report no relationship that could be construed as a con-
flict of interest.
Appendix A. Supplementary data
Supplementary data to this article can be found online at https://doi.
org/10.1016/j.ijcard.2018.04.096.
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