Beta Blockers in current cardiovascular practice Praveen Nagula
betablockers are the drug of choice for prevention of progression of heart failure with mortality benefit, after the evolution of neurohormonal regulation as pathogenesis of heart failure
Apresentação do principal paper do estudo DAPT, publicado online no NEJM em Novembro de 2014, comparando 12 Vs. 30 meses de terapia antiplaquetária dupla após implante de stents darmacológicos
Beta Blockers in current cardiovascular practice Praveen Nagula
betablockers are the drug of choice for prevention of progression of heart failure with mortality benefit, after the evolution of neurohormonal regulation as pathogenesis of heart failure
Apresentação do principal paper do estudo DAPT, publicado online no NEJM em Novembro de 2014, comparando 12 Vs. 30 meses de terapia antiplaquetária dupla após implante de stents darmacológicos
Large-scale hospital complexes, especially teaching hospitals, tend to develop like small cities: buildings are added, under-sized facilities are extended, obsolete constructions may be demolished. Whereas cities usually develop on land with a fixed infrastructural framework, a parceling structure often that originates in ownership titles of the land, large-scale hospitals are ideally based on master plans that, however, tend to lack the long-term validity inherent in urban planning. Moreover, the distinction between public and private components is inexistent and, therefore, the clear planning framework derived from it is also lacking. Consequently, the dynamics of separate components (departments) and the performance of public elements (streets, squares) cannot be balanced. Without a fixed framework and generally acknowledged rules, and the lack of the capacity to pursue long term visions, this leads to a complete lack of consistency. To add insult to injury, departments often need to expand and are likely to do so by just adding volumes seemingly at random in the open spaces surrounding them. Often, the result is similar to what would happen in cities if people would construct buildings in the middle of streets and squares. The rule rather than the exception, this calls for strategies to minimize the damage. In this session we take a look at the Centre for Surgical Medicine II (ZOM II) in Düsseldorf (Germany) by Heinle Wischer Partner and the University Medical Center Groningen (Netherlands) by Kruisheer Hallink, Team 4, Wytze Patijn and Vera Yanovshtchinsky.
PLATO (Platelet Inhibition and Patient Outcomes)theheart.org
- Background:
Ticagrelor, a new antiplatet agent and not a thienopyridine, has a unique mechanism of action in that it is reversible
- Population and treatment:
18 624 ACS patient, with or without ST-segment elevation, randomized in a double-blind, double-dummy fashion to ticagrelor (180-mg loading dose, 90 mg twice daily thereafter) or clopidogrel (300- to 600-mg loading dose, 75 mg thereafter) for one year
Patients also received aspirin 75 mg to 100 mg day, unless they could not tolerate the drug
- Primary outcome:
A composite of death from vascular causes, MI, or stroke
See the article at http://www.theheart.org/article/995621.do
My journey to AHA 2016 Shanghai.
[Quote from AHA]
•AHA 大会是一个针对资深专业人士的武林小会,这个
武林小会有两个特点
•深- 在这里有各路门派的最顶尖高手,包括敏捷圈、测
试圈、技术圈、引导圈、专业教练圈、组织变革圈、视
觉圈里面的代表人物。
•跨-有机会一下子看到这么多门派的看家绝技,融合。
哪怕连小会的组委会都是一个跨界共创。
Antiplatelet therapy there is a gap between guidelines and implementationA.Salam Sharif
platelets play an important role in cardiovascular diseases, the final event leading to ACS is a spontaneous atherosclerotic plaques which initiates a platelet response with platelet adhesion to vascular wall with activation and agregation and finally clot formation with clinical sequences od CV deaths, MI and myocardial ischemia and arrhythmias, so atiplatelet therapy is crucial in treatment of ACS, in the topic I review the traditional agents and new agents , focusing on guidelines and real world of their cinical uses .
Ticagrelor in acute myocardial infarctionVasif Mayan
Potential benefits of dual antiplatelet therapy beyond 1 year after an MI has not been studied
Patients with MI are at increased risk of RECURRENT ISCHAEMIC EVENTS
Intensive secondary prevention is theoretically beneficial
Finding an ideal drug with best risk-benefit ratio is a challenge
TICAGRELOR
--- Direct acting
Not a pro-drug; does not require metabolic activation
Rapid onset of inhibitory effect on the P2Y12 receptor
Greater inhibition of platelet aggregation than clopidogrel
--- Reversibly bound
Degree of inhibition reflects plasma concentration
Faster offset of effect than clopidogrel
Functional recovery of circulating platelets within ~48 hours
PLATO trial
PEGASUS TIMI trial
Dual antiplatelet therapy (DAPT) with aspirin (ASA) and a P2Y12 inhibitor (clopidogrel, ticagrelor, or prasugrel) is a standard therapeutic regimen to prevent stent thrombosis after percutaneous coronary intervention (PCI) with drug-eluting stents (DESs). The duration of DAPT has significant risk/benefit consequences and implications on quality improvement and patient safety. Since the last American College of Cardiology (ACC) and American Heart Association (AHA) PCI DAPT Guidelines were published in 2016,1 there has been an explosion of data regarding strategies to shorten the duration of DAPT. This Tip of the Month (TOTM) will place perspective on the most recent studies in comparison with the older guidelines—but with advice to address the current demands of contemporary decision processes.
carotid stenosis is a progressive gradual narrowing of carotid artery resulting in TIA and stroke. managemnet of this is challenging owing to various factors and different management options available to choose from.
Pro / Con Debate on Central Blood Pressuremagdy elmasry
The Basis : Forward & Reflected Pulse Waves
Central BP - Pro Side of the Argument
Central BP - Con Side of the Argument
Central BP - Consensus on Clinical Application
FDA-cleared devices for central BP and arterial stiffness assessment
Value of measuring central BP in clinComparative effect of
anti-hypertensive drugs and nitrates
on central systolic BP
ical practice
isolated systolic hypertension in the young
The cardio-metabolic continuum.
Hypertension and global cardio-metabolic risk
Hypertension Continuum Stages
What is the total cardiovascular risk?
What is the residual cardiovascular risk?
Global “Cardio-metabolic” Residual Risk Reduction
Residual CV risk rising from obesity.Metabolic syndrome.From NAFLD (Non-Alcoholic Fatty Liver Disease)
to MAFLD (Metabolic dysfunction-Associated Fatty Liver Disease)
Diagnosis and Management of Cardiovascular Involvement in Friedreich Ataxia
GAA 7-34 times→Normal
GAA 100-1700 times→FRDA
Current Research
into Drug Treatments
for Friedreich ataxia
Best Practice in Rare Diseases
Although CNS involvement dominates the clinical presentation of FRDA ,
CV involvement dictates its prognosis, accounting for ~ 59% of deaths among FRDA patients .
The prognosis is particularly poor for those with progressive LV systolic dysfunction.
Should we screen for and treat childhood dyslipidemia?
The Rationale for ASCVD Prevention by Primordial and Primary Strategies
Pediatric guidelines
Selective Screening
2Treatment algorithm of childhood dyslipidemia
-8 years & 12-16 years
Dyslipidemia and lipid lowering-therapy {LLT}
in women through the course of life. Lipid loering drug safety profile .Aging is associated with an increasing burden of morbidity, especially for CVDs.
Elderly population should be screened for
Main CV risk factors :
T2D , HTN , Smoking , Dyslipidemia & Obesity
Comorbidities : CKD
Geriatric conditions: Functional Impairment
Linking HFpEF and Chronic kidney disease magdy elmasry
Cardio-renal interactions
Introducing nephro-cardiology
{ or cardio-nephrology }
Where are we in 2022 with HFpEF ?CKD in HFpEF { or HFpEF in CKD } Cardiorenal
Syndrome .Four-step
HFA-PEFF diagnostic algorithm
heterogeneity in patients with HFpEF.Phenotyping HFpEF :
Beyond EF.Management of HFpEF .patients with HF on dialysis
Drug Treatment of Chronic Coronary Syndrome: Focus Issue on Ranolazinemagdy elmasry
Chronic Coronary Syndromes .Old and New Anti-anginal Drugs.Sodium channel blocker(Ranolazine)Angina / ischaemiac relief .
Voltage-gated sodium channels (NaVChs).Patient profile to guide drug treatment of
chronic coronary syndromes .Therapeutic algorithm for chronic stable angina according to heart rate and blood pressure.Treatment Options for Microvascular angina / Vasospastic angina.Ranolazine in arrhythmias
Ranolazine in ischemic reperfusion injury
Ranolazine in pulmonary hypertension
Ranolazine in heart failure
Ranolazine in the prevention of chemotherapy‑induced cardiotoxicity
Role in diabetes mellitus
Ranolazine in peripheral arterial disease
Ranolazine in myotonia‑congenita
Ranolazine in hypertrophic cardiomyopathy.Antiarrhythmic properties of ranolazine.Amiodarone +Ranolazine
Strategies to improve adherence to antihypertensive medicationmagdy elmasry
Challenges in hypertension treatment.What is the definition of medication non-adherence?Who is at risk? How should
patients at risk be screened and identified?What are the negative impacts of non-adherence?What is the
practical approach for improving adherence? The ABC taxonomy for medication adherence
Adherence :3 quantifiable components: initiation , implementation , and discontinuationThe five dimensions
of non-adherence
.
Do T2DM drugs have CV benefit for Type 1 Diabetes ?magdy elmasry
T1D Exchange , average A1C levels have not improved .How can adjunctive therapies ( added to insulin ) can help?
The Removal Trial.Three main clinical trials :
DEPICT with dapagliflozin ,
EASE with empagliflozin , and
inTANDEM with sotagliflozin.
Takotsubo syndrome diagnostic criteria.
position papers :Mayo clnic ,HFA and InterTAK Diagnostic Criteria.Takotsubo Syndrome and COVID-19.Noninvasive Multimodality Imaging
in the Diagnosis and Management
of Patients with Takotsubo Syndrome
CVD in cancer survivors.Screening of cancer survivors.Chest Radiotherapy .JACC Scientific Expert Panel
( J Am Coll Cardiol 2019;74:905–27 )manifestations of chest and mediastinal radiotherapy .
Connections Between Hepatic and Cardiovascular Disease,Diagnostic criteria for cirrhotic cardiomyopathy 2005 and 2019.New CCM criteria based
on contemporary CV imaging parameters
LV Systolic Function.
LV Diastolic Dysfunction.cardiac evaluation algorithm for liver transplant candidates
Anti-Diabetics For Cardiac Patients The Proper Selectionmagdy elmasry
Cardiovascular Disease and Type 2 Diabetes.Tight glycaemic control can reduce microvascular complications of T2DM, but does not lower CV risk sufficiently.
Multifactorial intervention, comprising of lowering lipid levels and BP, and use of aspirin, has been shown to reduce vascular complications and mortality.Shifting the Paradigm in Diabetes Care
Treating Diabetes Beyond A1C :Considerations for Cardiovascular Protection.
Peripartum Cardiomyopathy .BOARD scheme for the therapy of patients with acut...magdy elmasry
Definition of peripartum cardiomyopathy;Risk factors for the development of PPCM .Environmental Factors
Vasculohormonal (pregnancy).Genetic Factors Titin-truncating
Variants (TTNtv) .Secretion of prolactin by the anterior pituitary gland, upregulation of endothelial microRNA-146a (miRNA-146a), and placental secretion of soluble fms-like tyrosine kinase receptor 1 (sFlt-1) lead to endothelial dysfunction and cardiomyocyte death.Antisense therapy against microRNA-146a
Prolactin inhibition.bromocriptine .biomarkers in peripartum cardiomyopathy
Thyroid Hormones and Cardiovascular Function and Diseasesmagdy elmasry
Thyroid hormone system.
Thyroid hormone action on the CVS.
Thyroid hormones and cardioprotection.
How does thyroid disease affect the heart?
- Thyroid disease and CV risk factors.
- Thyroid dysfunction and CVD.
Thyroid hormones : a future therapeutic option?
New recommendations for a thyroid and CVD.
Thyroid and CV drugs.
Chronic Obstructive Pulmonary Disease and Heart Failure The challenges facin...magdy elmasry
Chronic Obstructive Pulmonary Disease and Heart Failure
The challenges facing cardiologists and pulmonologists,
prevalence of heart failure in COPD patients .Association of Cardiovascular Disease With Respiratory Disease,An atypical presentation of myocardial infarction (MI) should be considered in every patient presenting with COPD exacerbation ,Cardiovascular and pulmonary disease in the context of inflammation
(“CardioPulmonary Continuum”),The cornerstones of therapy are beta-blockers and beta-agonists ,which as their modes of action suggest oppose each other’s action
The main hemodynamic interactions that may impact on the diagnosis of multiple and mixed Multiple and Mixed Valvular Heart Diseases:HOW TO USE IMAGINGThe interplay of multiple valve pathology.The clinical challenge of concomitant aortic and mitral valve stenosis
.
.
Cancer-Associated Thrombosis.From LMWH to DOACsmagdy elmasry
Cancer-Associated Thrombosis.Risk factors for CAT. Certain types of cancer are associated with higher risk of CAT. Anticoagulant therapy for VTE in patients with cancer
Should You Use DOACs for Cancer-Associated VTE?.Criteria for DOAC use in cancer patients requiring anticoagulation .DOACs + AntiCancer agents
The Progression of Hypertensive Heart Disease.From hypertension to heart failuremagdy elmasry
Staging of Hypertensive Heart Disease.Precipitants and clinical sequelae related to LVH and myocardial fibrosis.Imaging in hypertensive heart disease .Differential diagnosis of LVH.Concentric LVH .Eccentric LVH . Concentric remodeling .linking hypertension and atrial fibrillation
Role of the Renin–Angiotensin–Aldosterone System Inhibition Beyond BP Reductionmagdy elmasry
Hypertension Mediated Organ Damage : How We Prevent It?The Role Of RAAS In Cardiovascular Continuum.Changes in Arterial Diameter in Patients with Arteriosclerosis or Atherosclerosis.Not All Angiotensin-Converting Enzyme Inhibitors Are Equal.Question : ACEIs vs. ARBsIs One Class Better For Cardiovascular Diseases?BP Variability .Central BP
.
Vascular Age &
Arterial Stiffness.Achieving BP Goals.
Cardio-Renal Protection Through Renin–Angiotensin–Aldosterone System Inhibitionmagdy elmasry
Physiological and detrimental roles of RAAS molecules in cardiac, vascular tissues and kidneys.‘cardiovascular continuum’ Barriers In Optimizing RAAS Inhibition.The effects of angiotensin II inhibition and improvement in bradykinin availability
micro teaching on communication m.sc nursing.pdfAnurag Sharma
Microteaching is a unique model of practice teaching. It is a viable instrument for the. desired change in the teaching behavior or the behavior potential which, in specified types of real. classroom situations, tends to facilitate the achievement of specified types of objectives.
Knee anatomy and clinical tests 2024.pdfvimalpl1234
This includes all relevant anatomy and clinical tests compiled from standard textbooks, Campbell,netter etc..It is comprehensive and best suited for orthopaedicians and orthopaedic residents.
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.
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
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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
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
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!
Ethanol (CH3CH2OH), or beverage alcohol, is a two-carbon alcohol
that is rapidly distributed in the body and brain. Ethanol alters many
neurochemical systems and has rewarding and addictive properties. It
is the oldest recreational drug and likely contributes to more morbidity,
mortality, and public health costs than all illicit drugs combined. The
5th edition of the Diagnostic and Statistical Manual of Mental Disorders
(DSM-5) integrates alcohol abuse and alcohol dependence into a single
disorder called alcohol use disorder (AUD), with mild, moderate,
and severe subclassifications (American Psychiatric Association, 2013).
In the DSM-5, all types of substance abuse and dependence have been
combined into a single substance use disorder (SUD) on a continuum
from mild to severe. A diagnosis of AUD requires that at least two of
the 11 DSM-5 behaviors be present within a 12-month period (mild
AUD: 2–3 criteria; moderate AUD: 4–5 criteria; severe AUD: 6–11 criteria).
The four main behavioral effects of AUD are impaired control over
drinking, negative social consequences, risky use, and altered physiological
effects (tolerance, withdrawal). This chapter presents an overview
of the prevalence and harmful consequences of AUD in the U.S.,
the systemic nature of the disease, neurocircuitry and stages of AUD,
comorbidities, fetal alcohol spectrum disorders, genetic risk factors, and
pharmacotherapies for AUD.
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
2. Initial assessment of patients with suspected acute coronary syndromes
“Other cardiac” includes, among other, myocarditis, Tako-Tsubo cardiomyopathy, or
tachyarrhythmias.
“Non-cardiac” refers to thoracic diseases such as pneumonia or pneumothorax.
If the initial evaluation suggests aortic dissection or pulmonary embolism, D-dimers and
MDCT angiography are recommended
3. STEMI time delays (Time is Myocardium ) “You may delay, but
time will not, and lost time is never found again.”
Patient Delay System Delay
FMC
door-to-balloon time
door-to-needle time
4. Selection of NSTE-ACS treatment strategy and
timing according to initial risk stratification.
9. Available P2Y12 blockers
DAPT (ASA + clopidogrel/prasugrel/ticagrelor)
is recommended after ACS (STEMI or NSTE-ACS) to reduce
the risk of thrombosis
12. PLATelet inhibition and patient Outcomes (PLATO) trial.
Ticagrelor vs clopidogrel in patients with acute coronary syndromes.
Acute Stroke Or Transient IsChaemic Attack TReated With
Aspirin or Ticagrelor and Patient OutcomES"SOCRATES"
16. All-cause death in the ticagrelor and clopidogrel arms of the PLATO trial.
Percentages are Kaplan–Meier estimates of the rate of the endpoint at 12
months. Mortality rates are reported in the overall population, in subgroups of
patients undergoing either planned invasive or conservative strategy
17.
18. Canadian Journal
of Cardiology 29
(2013) 1334-1345
Based on the PLATO results, the 2012 Canadian Cardiovascular Society
Antiplatelet Guidelines recommend the following:
19. *Moderate to high-risk NSTEACS as defined in PLATO : ≥ 2 of: (1) ischemic ST changes on
electrocardiogram; (2) positive blomarkers; and (3) 1 of the following: 60 years of age or greater,
previous MI or CABG, CAD > 50% stenosis in 2 vessels, previous ischemic stroke, diabetes, peripheral
arterial disease, or chronic renal dysfunction.
20. * Prasugrel should be avoided in patients with previous TIA or stroke. In patients aged 75 years and older,
or body weight ≤ 60 kg, prasgurel should be used with caution and a 5 mg dose considered.
21. Administration of oral P2Y12 inhibitors prior to coronary angiography has
long been the gold standard in patients with ACS.
The aim of such a strategy was to allow stent implantation to be
performed at a time when platelet activation was reduced to
prevent ischemic complications and avoid early stent thrombosis.
Pretreatment would also reduce pre-PCI ischemic events by reducing
thrombotic burden.
22.
23.
24. Initiating Antiplatelet Therapy In Patients With ACS
Making decisions in the ER or
Cath lab when time matters
Loading ticagrelor in patients with ACS is not restricted by
25.
26. Ticagrelor is a faster and more potent P2Y12 inhibitor that
demonstrated a significant clinical benefit over clopidogrel in ACS.
It is therefore recommended as a first-line agent over
clopidogrel in ACS
Caution in those with a history of COPD,
asthma, HF, gout & severe renal impairment due to increased
risk of dyspnea & elevated serum uric acid & creatinine.
27. Interplay between ticagrelor and adenosine in humans including impact on the
heart, lungs, and brain (top); intestine (middle); platelets,kidneys, and liver
(bottom). A1, A2A, A2B, and A3 are adenosine receptors potentially involved.
Pleiotropic effects of ticagrelor
28. Ticagrelor
inhibits
cellular
uptake of
adenosine
Formation of adenosine and its intracellular uptake and metabolism, which are reduced
by ticagrelor through inhibition of ENT1(equilibrative nucleoside transporter 1)
Does ticagrelor have additional mechanism(s) of action?
31. Antiplatelet therapy post-ACS
The clinical cardiologist’s role
What is the optimal duration of DAPT after ACS?
Duration of DAPT in Patients With ACS Treated With Medical Therapy Alone
Duration of DAPT in Patients With STEMI Treated With Fibrinolytic Therapy
Duration of DAPT in Patients With ACS Treated With PCI
Duration of DAPT in Patients With ACS Treated With CABG
36. This study identified a sub-group of patients at high risk of
recurrent ischemic events that occurred more than 12
months after an initial MI who could benefit from
prolonged DAPT by aspirin and ticagrelor.
(Prevention of
Cardiovascular Events in
Patients With Prior Heart
Attack Using Ticagrelor
Compared to Placebo on
a Background of Aspirin)
trial
37. DAPT Risk Score Picks
Patients for Extended
Therapy
'This is exactly what we
need' to balance benefit
and risk
Continuation of DAPT beyond 1 year reduces the risk of MI and
stent thrombosis, with the tradeoff of increased bleeding.
38. Using the DAPT Score to Predict
Stent Thrombosis vs. Bleeding
39.
40.
41. Master Treatment Algorithm for Duration of P2Y12 Inhibitor
Therapy in Patients With CAD Treated With DAPT
42. Treatment Algorithm for Duration of P2Y12Inhibitor Therapy in
Patient With Recent ACS (NSTE-ACS or STEMI)