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Related Concept Videos

Mitral Stenosis I: Introduction01:22

Mitral Stenosis I: Introduction

22
Mitral Valve Stenosis (MVS) is a heart condition where the mitral valve narrows, impeding blood circulation from the left atrium to the left ventricle. The etiology and pathophysiology of this condition are multifaceted, leading to a cascade of cardiovascular complications.Causes of Mitral Valve StenosisRheumatic Heart Disease: It is the main cause of mitral valve stenosis, particularly in developing nations. This condition arises from rheumatic fever, an inflammatory illness resulting from...
22
Rheumatic Heart Disease I: Introduction01:23

Rheumatic Heart Disease I: Introduction

24
Rheumatic heart disease or RHD is a chronic condition that results from rheumatic fever, causing permanent damage to the heart valves.Etiology and Risk FactorsIt primarily arises from rheumatic fever, an inflammatory disease that can develop after untreated or inadequately treated group A streptococcal (GAS) pharyngitis. Streptococcus spreads through direct contact with oral or respiratory secretions. While the bacteria are the causative agents, factors like malnutrition, overcrowding, poor...
24
Endocarditis I: Introduction01:25

Endocarditis I: Introduction

16
Introduction:Endocarditis is the infection of the endocardium, the inner lining of the heart and its valves. When the heart muscle is involved, the condition is termed myocarditis, while an infection of the outer lining is called pericarditis. Infective endocarditis (IE) primarily affects the endocardium, where pathogens adhere to the valves or lining, forming vegetation that can lead to severe complications. Infective endocarditis occurs when microorganisms, usually bacteria from other body...
16
Mitral Stenosis III: Medical Management01:26

Mitral Stenosis III: Medical Management

15
Mitral stenosis, a condition marked by the narrowing of the mitral valve, necessitates an integrated approach for effective management. This approach includes preventative measures, medical therapy, and surgical interventions to reduce symptoms and prevent complications.PreventionPrevention of mitral stenosis primarily focuses on reducing the incidence of bacterial infections, particularly streptococcal infections, which can lead to rheumatic fever and subsequent valvular damage. Timely...
15
Mitral Stenosis IV: Nursing Management01:27

Mitral Stenosis IV: Nursing Management

17
A comprehensive nursing assessment is essential for patients with valvular heart disease, which involves any dysfunction of the heart valves that could impact blood flow and overall heart function.Subjective Data Collection:Chief Complaint and Present Illness: Start with the patient's primary concerns, focusing on the onset, duration, and progression of cardiac symptoms such as dyspnea, fatigue, chest pain, and palpitations.Past Medical History: Collect detailed information on any previous...
17
Mitral Regurgitation I: Introduction01:20

Mitral Regurgitation I: Introduction

23
Mitral regurgitation is characterized by the backward circulation of blood from the left ventricle to the left atrium during systole, a phase of the cardiac cycle when the heart contracts and pumps blood out of the chambers. This abnormal flow occurs primarily due to the dysfunction of the mitral valve or its supporting structures, which include the mitral leaflets, chordae tendineae, annulus, and papillary muscles.Etiology and Mechanisms:Primary Mitral Regurgitation: This type arises from...
23

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Related Experiment Video

Updated: Aug 5, 2025

Investigating Aortic Valve Calcification via Isolation and Culture of T Lymphocytes using Feeder Cells from Irradiated Buffy Coat
04:30

Investigating Aortic Valve Calcification via Isolation and Culture of T Lymphocytes using Feeder Cells from Irradiated Buffy Coat

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Stroke and Noninfective Native Valvular Disease.

Jacob J Mayfield1, Catherine M Otto2

  • 1Division of Cardiology, University of Washington School of Medicine, Seattle, WA, USA. Jake.Mayfield@me.com.

Current Cardiology Reports
|March 27, 2023
PubMed
Summary
This summary is machine-generated.

Noninfective heart valve lesions can cause embolic stroke. Degenerating valves or cardiac tumors may embolize, leading to cerebral infarcts when common causes are excluded.

Keywords:
Aortic stenosisBicuspid aortic valveEmbolic stroke of undetermined sourceStrokeValvular heart disease

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Area of Science:

  • Cardiology
  • Neurology
  • Vascular Medicine

Background:

  • Embolic stroke of undetermined source presents a diagnostic challenge.
  • Noninfective heart valve lesions are an underrecognized cause of stroke.
  • These lesions include degenerating valves and cardiac tumors.

Purpose of the Study:

  • To review the epidemiology, pathophysiology, and management of noninfective valvular diseases associated with stroke.
  • To highlight the role of valvular lesions in cryptogenic stroke.
  • To differentiate valvular causes from more common stroke etiologies.

Main Methods:

  • Literature review of noninfective valvular diseases and stroke.
  • Analysis of pathophysiological mechanisms of embolism from cardiac structures.
  • Discussion of diagnostic and therapeutic strategies.

Main Results:

  • Calcific debris from degenerating aortic and mitral valves can embolize, causing cerebral ischemia.
  • Thrombus or tumor fragments (e.g., myxomas, papillary fibroelastomas) from the heart can lead to stroke.
  • Valvular disease is often comorbid with atrial fibrillation and atherosclerosis, requiring careful differential diagnosis.

Conclusions:

  • Noninfective valvular lesions are important, though less common, causes of embolic stroke.
  • A high index of suspicion is necessary to identify these causes.
  • Management requires distinguishing valvular disease (often needing surgery) from conditions like atrial fibrillation (managed with anticoagulation).