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Related Concept Videos

Mitral Valve Prolapse I: Introduction01:27

Mitral Valve Prolapse I: Introduction

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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...
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Mitral Valve Prolapse II: Assessment and Management01:22

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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...
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Heart Valves01:16

Heart Valves

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The human heart is a complex organ with an intricate system of valves that regulate blood flow. There are two main types of valves: atrioventricular (AV) valves and semilunar valves.
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
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Mitral Stenosis III: Medical Management01:26

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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...
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Mitral Stenosis IV: Nursing Management01:27

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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...
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Mitral Stenosis I: Introduction01:22

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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...
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Protocol for Relative Hydrodynamic Assessment of Tri-leaflet Polymer Valves
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A rare Mechanical prosthetic valve dysfunction.

Yan Sun1, Hui Ming Zhang1, Hao Wang2

  • 1State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National center for Cardiovascular Diseases, Chinese Academy of Medical Sciences And Peking Union Medical College. Beijing, 100037, People's Republic of China.

Medical Ultrasonography
|February 10, 2017
PubMed
Summary
This summary is machine-generated.

A rare case of mechanical prosthetic valve dysfunction was observed, where the mitral valve opened only every two heartbeats. Aortic valve dysfunction also occurred, with alternating long and short opening times due to changing left ventricular volume.

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Area of Science:

  • Cardiovascular Medicine
  • Biomedical Engineering
  • Prosthetic Valve Technology

Background:

  • Mechanical prosthetic valves are crucial for patients with valvular heart disease.
  • Proper valve function is essential for maintaining hemodynamic stability.
  • Prosthetic valve dysfunction can lead to significant morbidity and mortality.

Observation:

  • A rare instance of mechanical prosthetic valve dysfunction in the mitral position was documented.
  • The affected mitral valve exhibited an abnormal opening pattern, functioning only once every two cardiac cycles.
  • Mechanical prosthetic valves in the aortic position showed variable opening times, alternating between prolonged and shortened durations.

Findings:

  • The mitral mechanical prosthetic valve dysfunction was characterized by severely impaired leaflet excursion.
  • Alternating long and short opening times in aortic mechanical prosthetic valves correlated with dynamic changes in left ventricular volume.
  • These findings suggest a complex interplay between prosthetic valve mechanics and cardiac hemodynamics.

Implications:

  • This case highlights the importance of vigilant monitoring for rare mechanical prosthetic valve dysfunctions.
  • Understanding the mechanisms of such dysfunctions can inform the design of improved prosthetic valves.
  • Further research is warranted to elucidate the precise etiologies and long-term consequences of these rare valve dysfunctions.