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Related Concept Videos

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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Imbalances in Cardiac Output01:26

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The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
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Pathophysiology of Heart Failure01:17

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Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
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Cardiovascular System Abnormal Findings II: Auscultation01:25

Cardiovascular System Abnormal Findings II: Auscultation

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Auscultation, an essential part of a heart examination, is done using a stethoscope. It provides crucial information about heart function and possible heart problems. Due to heart problems, abnormal sounds can be heard during systole or diastole. These sounds include S3 and S4 gallops, opening snaps, systolic clicks, and murmurs.
Abnormal Heart Sounds
Gallops:
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Related Experiment Video

Updated: Jun 18, 2025

An Image Guided Transapical Mitral Valve Leaflet Puncture Model of Controlled Volume Overload from Mitral Regurgitation in the Rat
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Mitral Valve in Obstructive Hypertrophic Cardiomyopathy: Abnormalities, Management and Controversies.

Zhuheng Wu1, Lin Xie1, Yajiao Li2

  • 1Department of Cardiovascular Surgery, West China Hospital, Sichuan University, 610041 Chengdu, Sichuan, China.

Reviews in Cardiovascular Medicine
|July 30, 2024
PubMed
Summary

Obstructive hypertrophic cardiomyopathy (HCM) involves heart muscle thickening and outflow obstruction. This review details mitral valve issues in obstructive HCM, surgical options, and ongoing treatment debates.

Keywords:
hypertrophic cardiomyopathyleft ventricular outflow tract obstructionmitral valvesurgical correction

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Area of Science:

  • Cardiology
  • Cardiac Surgery
  • Genetics

Background:

  • Obstructive hypertrophic cardiomyopathy (HCM) is a genetic heart condition.
  • It causes thickening of the heart muscle (septal hypertrophy) and blockage of blood flow out of the left ventricle (LVOT obstruction).
  • Mitral valve abnormalities are frequent and can worsen LVOT obstruction through systolic anterior motion (SAM).

Purpose of the Study:

  • To review mitral valve abnormalities in obstructive HCM.
  • To discuss surgical correction strategies for these abnormalities.
  • To explore controversies surrounding concomitant mitral valve procedures during septal myectomy.

Main Methods:

  • Literature review of current clinical studies.
  • Analysis of surgical strategies for obstructive HCM.
  • Discussion of mitral valve abnormalities and their impact on LVOT obstruction.

Main Results:

  • Mitral valve abnormalities are common in obstructive HCM and contribute to SAM and LVOT obstruction.
  • Surgical myectomy is the primary treatment for obstructive HCM.
  • Debate exists regarding the necessity and technique of concurrent mitral valve surgery.

Conclusions:

  • Understanding mitral valve pathology is crucial in obstructive HCM management.
  • Optimal surgical approach requires careful consideration of individual patient factors.
  • Further research is needed to resolve controversies in combined surgical procedures.