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heart valve
(redirected from AV valve)

    Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia 0.01 sec.
heart valve,
one of the four structures within the heart that prevent backflow of blood by opening and closing with each heartbeat. The valves include two semilunar valves, the aortic and pulmonary; the mitral or bicuspid valve; and the tricuspid valve. The valves permit blood flow in only one direction; any of the valves may become defective, permitting the backflow associated with heart murmurs. Also called cardiac valve. See also heart, mitral valve, semilunar valve, tricuspid valve.


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Pulmonary valve (PV) ejection clicks begin shortly after AV valve closure, vary with respiration and are best heard at the upper left sternal border.
How do you deal with anaesthesia in a child with a murmur? by Diedericks, Johan / CME: Your SA Journal of CPD
The absence of risk factors for mortality from right isomerism, such as pulmonary venous obstruction, AV valve regurgitation, sepsis or severe arrhythmia, might have contributed to the longevity of this patient.
A case of right isomerism showing long survival without surgery by Moriyama, Masatsugu / Southern Medical Journal
 
 
 
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