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Related Concept Videos

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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.
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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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Aortic Regurgitation I: Introduction01:15

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IntroductionAortic regurgitation is characterized by the backward flow of blood from the aorta into the left ventricle during diastole and arises from the improper closure of the aortic valve. This condition results in left ventricular volume overload and can stem from both acute and chronic etiologies, each contributing uniquely to the disease's progression and symptomatology.Acute and Chronic CausesAcute aortic regurgitation often results from events that suddenly impair the integrity of the...
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Vascular Spasm01:16

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The vascular phase, also known as vasospasm, is the initial stage of hemostasis, crucial for preventing excessive bleeding when a blood vessel is injured. After a vessel is cut, nerves in the damaged area trigger pain and other sensory impulses. Simultaneously, the smooth muscles in the vessel wall contract, resulting in a vascular spasm. This contraction reduces the vessel's diameter at the injury site, slowing or stopping blood loss through the vessel wall. Vascular spasms typically last...
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Related Experiment Video

Updated: Feb 2, 2026

Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement
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Vascular malformation in a bicuspid aortic valve.

Paul Cotier1, Patrick Bruneval1, Kisaki Amemiya1

  • 1Department of Pathology, Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges Pompidou, 20 rue Leblanc, 75015-, Paris, France.

Cardiovascular Pathology : the Official Journal of the Society for Cardiovascular Pathology
|November 18, 2018
PubMed
Summary

A rare capillary vascular malformation was found in a bicuspid aortic valve during surgery. This vascular lesion was classified using the ISSVA system, distinguishing it from hemangioma.

Keywords:
Bicuspid aortic valveCardiac valvesInternational Society for the Study of Vascular Anomalies (ISSVA)Vascular malformations

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Area of Science:

  • Cardiovascular Medicine
  • Vascular Biology
  • Pathology

Background:

  • Bicuspid aortic valves are congenital heart defects that can lead to aortic stenosis and other complications.
  • Vascular malformations are structural anomalies of blood vessels, distinct from vascular tumors like hemangiomas.

Observation:

  • A 67-year-old male patient undergoing aortic valve replacement for a bicuspid aortic valve was incidentally found to have a capillary vascular malformation.
  • The lesion was located within the aortic valve tissue.

Findings:

  • The vascular lesion was accurately classified as a capillary vascular malformation according to the International Society for the Study of Vascular Anomalies (ISSVA) classification.
  • This finding highlights the importance of precise classification of vascular lesions, differentiating them from hemangiomas.

Implications:

  • This case expands the understanding of rare vascular anomalies occurring in cardiac structures.
  • Accurate classification of vascular lesions is crucial for appropriate diagnosis and management.
  • Further research may explore the etiology and clinical significance of such incidental findings in valvular heart disease.