Atherosclerosis - Definition - Risk Factors - Lesser and Non Quantitated risk factors - Arterial wall - The development of Atherosclerosis - Many Features of the injury Hypothesis - The process of Atherogenesis - Pathogenesis in short - Morphology of Atheroma - Components of Atheromatous Plaque (MP) - Complications and clinical significance - Cardiovascular risk and its assessment.
Atherosclerosis - Definition - Risk Factors - Lesser and Non Quantitated risk factors - Arterial wall - The development of Atherosclerosis - Many Features of the injury Hypothesis - The process of Atherogenesis - Pathogenesis in short - Morphology of Atheroma - Components of Atheromatous Plaque (MP) - Complications and clinical significance - Cardiovascular risk and its assessment.
Coronary arteries |Coronary Arteries Functions | Diseases- medical discussion. martinshaji
Coronary arteries diseases occurs when the major blood vessels that supply your heart with blood, oxygen, and nutrients (coronary arteries) become damaged or sick. The deposits containing cholesterol (plaques) in the arteries and infections are usually the cause of coronary artery disease.
When plaques accumulate, the coronary arteries narrow; This reduces blood flow to your heart. Ultimately, decreased blood flow may cause chest pain (angina), shortness of breath, or other signs and symptoms of coronary disease. A complete blockage can cause a heart attack.
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Coronary arteries |Coronary Arteries Functions | Diseases- medical discussion. martinshaji
Coronary arteries diseases occurs when the major blood vessels that supply your heart with blood, oxygen, and nutrients (coronary arteries) become damaged or sick. The deposits containing cholesterol (plaques) in the arteries and infections are usually the cause of coronary artery disease.
When plaques accumulate, the coronary arteries narrow; This reduces blood flow to your heart. Ultimately, decreased blood flow may cause chest pain (angina), shortness of breath, or other signs and symptoms of coronary disease. A complete blockage can cause a heart attack.
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thank you....
Does your family history suggest that you are at a high risk of developing Atherosclerosis? Here is an article that will tell you about the causes, symptoms and prevention of this disease.
Atherosclerosis is an intima-based lesion organized into a fibrous cap and an atheromatous (gruel-like) core and composed of SMCs, ECM, inflammatory cells, lipids, and necrotic debris.
Atherogenesis is driven by an interplay of inflammation and injury to vessel wall cells.
Atherosclerotic plaques accrue slowly over decades but may acutely cause symptoms due to rupture, thrombosis, hemorrhage, or embolization.
Risk factor recognition and reduction can reduce the incidence and severity of atherosclerosis-related disease.
Endothelial function can be improved after successful periodontal treatment
The human heart is a muscular organ with four chambers The size of the heart is the size of about a clenched fist. The function of the heart is to maintain a constant flow of blood throughout the body. This replenishes oxygen and circulates nutrients among the cells and tissues.
Several conditions impair the heart’s function. In Medical Terminology we use the term "heart disease". A list of Some Heart diseases is as follows:-
1(a). Disorders of heart rate, rhythm, and conduction
1.1 Sinus Arrhythmia -
Phasic alteration of heart rate during respiration may be due to activity in the parasympathetic system. can be two types:-
sinus bradycardia - Sinus rate is less than 60/min, Like normally present in Athletes.
Pathological Causes -Myocardial Infarction, Sinus Node Disease, Hypothermia, Hypothyroidism, Cholestatic jaundice, Raised Intracranial pressure, drugs like beta-blockers or verapamil.
Sinus Tachycardia - Heart rate of more than 100/min, it may be associated with exercise, pregnancy, and emotion.
After that Pathological Causes of Anxiety, Fever, Anemia, Heart Failure, Thyrotoxicosis, Phaeochromocytoma, and Drugs like bronchodilators.
1.2 Atrial tachyarrhythmias
Heart Disease having Atrial tachyarrhythmias are irregular fast heartbeat in the upper chambers of the heart(atria)
1.3 Atrial ectopic beats
Ectopic heartbeats are extra heartbeats that occur just before a regular beat. Ectopic beats are normal but can give the sensation of a missed beat.
1.4 Atrial tachycardia
It is a type of Heart Disease in which arrhythmia(an irregular heart rhythm) causes the upper chambers(atria) of the heart to beat faster than normal. This condition has several possible causes but is usually not dangerous. It is often curable or manageable with medication.
1.5 Atrial flutter
It Is one of the abnormal heart rhythms characterized by the right atrium beating quickly and encircling the tricuspid annulus.
1.6 Atrial fibrillation
In AF the upper chambers of the heart (the atria) beat irregularly instead of beating effectively to move blood into the ventricles. It is characterized by the presence of multiple, interacting re-entry circuits looping around the area. if untreated atrial fibrillation doubles the risk of heart-related deaths and associated serious conditions like stroke.
common causes may be coronary artery disease, valvular heart disease, hypertension, sinoatrial disease, hyperthyroidism, alcohol, cardiomyopathy, chest infection, congenital heart disease, pericardial disease, and pulmonary embolism.
A guide for people with coronary heart disease and their families.
This module would help you understand your heart better.
You would become aware of how the heart functions, how do the blood vessels get affected, difference between chest pain, heart attack, stroke and cardiac arrest and how to handle each of these situations.
You would also understand the different risk factors for heart disease and the importance of controlling them to lead a healthy future life.
This does not replace the advice given by your doctor specifically for you, but this would help you understand their advice better.
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.
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
Title: Sense of Taste
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 structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
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
Prix Galien International 2024 Forum ProgramLevi Shapiro
June 20, 2024, Prix Galien International and Jerusalem Ethics Forum in ROME. Detailed agenda including panels:
- ADVANCES IN CARDIOLOGY: A NEW PARADIGM IS COMING
- WOMEN’S HEALTH: FERTILITY PRESERVATION
- WHAT’S NEW IN THE TREATMENT OF INFECTIOUS,
ONCOLOGICAL AND INFLAMMATORY SKIN DISEASES?
- ARTIFICIAL INTELLIGENCE AND ETHICS
- GENE THERAPY
- BEYOND BORDERS: GLOBAL INITIATIVES FOR DEMOCRATIZING LIFE SCIENCE TECHNOLOGIES AND PROMOTING ACCESS TO HEALTHCARE
- ETHICAL CHALLENGES IN LIFE SCIENCES
- Prix Galien International Awards Ceremony
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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 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
Anti ulcer drugs and their Advance pharmacology ||
Anti-ulcer drugs are medications used to prevent and treat ulcers in the stomach and upper part of the small intestine (duodenal ulcers). These ulcers are often caused by an imbalance between stomach acid and the mucosal lining, which protects the stomach lining.
||Scope: Overview of various classes of anti-ulcer drugs, their mechanisms of action, indications, side effects, and clinical considerations.
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!
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.
3. What is atherosclerosis ?
It is a condition in which the arteries become narrowed and hardened due
to an excessive build up of plaque around the arterial wall .
3
5. Atherosclerosis is a slow, progressive disease that
may begin as early as childhood.
atherosclerosis may start with damage or injury to the inner layer of an artery.
The damage may be caused by:
High blood pressure
High cholesterol
High triglycerides, a type of fat (lipid) in your blood
Smoking and other sources of tobacco
Insulin resistance, obesity or diabetes
Inflammation from diseases, such as arthritis, lupus or infections
5
6. Risk factors
Hardening of the arteries occurs over time. Besides aging, factors that increase the risk of
atherosclerosis include:
High blood pressure
high cholesterol
Diabetes
Obesity
Smoking and other tobacco use
A family history of early heart disease
Lack of exercise
An unhealthy diet
6
8. Atherosclerosis develops gradually, Mild atherosclerosis usually doesn't have any
symptoms
Symptoms of moderate to severe atherosclerosis depend on which arteries are affected
as :
Sometimes a blood clot completely blocks blood flow, or even breaks apart and can trigger a
heart attack or stroke
chest pain or pressure (angina)
leg pain when walking (claudication)
kidney failure
8
10. 1. Ischemia : the diseased and narrowed artery cannot accommodate for the demands in
in blood flow so the target area shows signs of tissue injury as a result
of hypoxia (reduced oxygen supply)
2. Stroke
3. heart attack
4. Leg ulcers
5. Gangrene
10
sings
12. The complications of atherosclerosis depend on which arteries are blocked. For example:
Coronary artery disease. When atherosclerosis narrows the arteries close to your heart, you
may develop coronary artery disease, which can cause chest pain (angina), a heart attack or
heart failure
12
13. Peripheral artery disease: When atherosclerosis narrows the arteries in your arms or
legs, In rare cases, poor circulation in your arms or legs can cause tissue death
"gangrene"
13
14. Aneurysms: Atherosclerosis can also cause aneurysms, a serious complication that can
occur anywhere in your body. An aneurysm is a bulge in the wall of your artery.
Chronic kidney disease: Atherosclerosis can cause the arteries leading to your kidneys
to narrow, preventing oxygenated blood from reaching them.
Carotid artery disease: When atherosclerosis narrows the arteries close to your brain,
you may develop carotid artery disease, which can cause a transient ischemic attack
or stroke.
14
16. 1. lifestyle changes:
• Healthy diet
• Exercise
• no smoking
2. Medication:
• Anti-platelets : aspirin
• Drugs for high cholesterol : statins
• Drugs for high blood pressure : angiotensin converting enzyme
3. surgery
• Severe cases of atherosclerosis may be treated by surgical procedures, such as angioplasty or
coronary artery bypass grafting (CABG).
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