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Related Concept Videos

Heart Valves01:16

Heart Valves

14.9K
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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Anatomy of the Heart01:27

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The human heart is made up of three layers of tissue that are surrounded by the pericardium, a membrane that protects and confines the heart. The outermost layer, closest to the pericardium, is the epicardium. The pericardial cavity separates the pericardium from the epicardium. Beneath the epicardium is the myocardium, the middle layer, and the endocardium, the innermost layer. There are four chambers of the heart: the right atrium, the right ventricle, the left atrium, and the left ventricle.
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Mitral Valve Prolapse I: Introduction01:27

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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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Related Experiment Video

Updated: May 3, 2026

Transplantation of Pulmonary Valve Using a Mouse Model of Heterotopic Heart Transplantation
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[Mechanical versus biological heart valves].

J Ennker1, A Lauruschkat

  • 1Klinik für Herz-, Thorax- und Gefäßchirurgie, Herzzentrum Lahr/Baden, Postfach 1340, 77933, Lahr, Germany, juergen.ennker@heart-lahr.com.

Zeitschrift Fur Kardiologie
|January 22, 2014
PubMed
Summary
This summary is machine-generated.

This review compares mechanical and biological heart valves, discussing their specific uses and potential complications after heart valve replacement surgery.

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Area of Science:

  • Cardiovascular Surgery
  • Biomaterials Science
  • Medical Device Technology

Context:

  • Heart valve replacement has evolved significantly since the 1950s.
  • Numerous mechanical and biological heart valves are now available.
  • Understanding valve type indications and complications is crucial for patient outcomes.

Purpose:

  • To provide a structured overview of key mechanical and biological heart valves.
  • To delineate the specific indications for mechanical versus biological valve replacement.
  • To examine potential postoperative complications associated with each valve type.

Summary:

  • This review details important mechanical and biological heart valves.
  • It contrasts their distinct clinical indications for heart valve replacement.
  • Potential postoperative complications are also discussed.

Impact:

  • Informs clinical decision-making for heart valve selection.
  • Aids in patient counseling regarding risks and benefits.
  • Contributes to improved management of heart valve replacement patients.