Mitral Valve
Mitral Valve - Related Videos
09:13
Optimized Protocol for the Extraction of Proteins from the Human Mitral Valve
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2017
The protein composition of the human mitral valve is still partially unknown, because its analysis is complicated by low cellularity and therefore by low protein biosynthesis. This work provides a protocol to efficiently extract protein for the analysis of the mitral valve proteome.
01:27
Mitral Valve Prolapse I: Introduction
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2025
IntroductionThe mitral valve, one of the heart's four valves, regulates blood flow. These valves have flaps that open and close to direct blood properly through the heart and body. During each heartbeat, the flaps open for blood to pass through and seal shut to prevent backflow. Specifically, the mitral valve opens to allow blood flow from the heart's upper left chamber to the lower left chamber. It then closes securely as the lower left chamber contracts to pump blood to the body, preventing...
01:22
Mitral Valve Prolapse II: Assessment and Management
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2025
IntroductionA range of clinical features characterizes Mitral Valve Prolapse (MVP), but it is important to note that many individuals with MVP are asymptomatic and may remain so throughout their lives. For those who do exhibit symptoms, the following are the key clinical features:Palpitations: This is a common symptom where individuals feel an irregular or rapid heartbeat. Palpitations in MVP are often due to arrhythmias such as premature ventricular contractions or supraventricular tachycardia.
01:19
Mitral Valve Prolapse III: Nursing Management
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2025
The nursing management of Mitral Valve Prolapse, or MVP, centers around patient education, symptom monitoring, and lifestyle modifications.Patient Education on MVP Diagnosis and Heredity: Nurses should provide comprehensive education about MVP, a condition where the mitral valve does not close appropriately during heartbeats. This education often includes the condition's pathophysiology, symptoms, and potential complications, like arrhythmias or mitral regurgitation. Though not fully...
08:12
Fully Endoscopic Mitral Valve Repair with Percutaneous Cannulation of Groin Vessels
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2023
This protocol demonstrates in detail how to perform fully endoscopic mitral valve surgery (EMS) with percutaneous cannulation of the groin vessels, using a percutaneous plug-based vascular closure device. Fundamental steps and useful instructions are described in detail for each step.
FAQs
Its movement is linked to pressure changes between the left atrium and left ventricle. During ventricular diastole, the valve opens so oxygenated blood can enter the ventricle. When ventricular systole begins, it closes as ventricular pressure rises, helping direct blood forward rather than back toward the atrium. This timing supports efficient circulation.
The chordae tendineae and papillary muscles provide mechanical support when the valve closes. Together, they help keep the leaflets from inverting during ventricular systole, when pressure inside the ventricle increases. If leaflet support is inadequate, closure may become less effective and blood can flow backward into the left atrium.
Stenosis restricts blood moving from the left atrium into the left ventricle, whereas regurgitation permits backward flow when the valve should be closed. Both abnormalities can reduce effective circulation and increase pressure in the lungs, but they do so through different disruptions of valve opening or closure. Distinguishing them guides medical evaluation and treatment.
Echocardiography provides a diagnostic assessment of the mitral valve and its effect on cardiac function. It can help clinicians evaluate abnormalities associated with stenosis or regurgitation and consider how those changes influence blood flow and pressure. The findings support decisions about monitoring, repair, or replacement when valve dysfunction compromises circulation.
Surgical or catheter-based repair and replacement may be considered when mitral valve dysfunction significantly impairs blood flow or contributes to increased pressure in the lungs. Repair addresses the existing valve, while replacement substitutes for it. The choice depends on the clinical problem identified through evaluation, with the aim of restoring more effective circulation.
Catheter-based treatment is one approach available for mitral valve repair or replacement. Rather than relying only on open surgery, clinicians can use a catheter-based strategy when it is appropriate for the valve problem and patient context. These interventions are intended to improve valve performance, restore blood flow, and support better cardiac and pulmonary pressure outcomes.