atrioventricular valve


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Related to atrioventricular valve: atrioventricular node, tricuspid valve

atrioventricular valve

[¦a·trē·ō‚ven′trik·yə·lər ′valv]
(anatomy)
A structure located at the orifice between the atrium and ventricle which maintains a unidirectional blood flow through the heart.
References in periodicals archive ?
13) In birds, the right atrioventricular valve consists of a muscular flap of myocardium.
The length of right atrioventricular valve and left cusp of left atrioventricular valve was more in control group A3 than that of experimental group B3; however, this difference was not statistically significant.
That despite two prior open-heart operations our patient required a third to replace the left side of the common atrioventricular valve to prevent ventriculoatrial regurgitation is not surprising.
It is considered that the absence of pulmonary venous obstruction and significant atrioventricular valve regurgitation and the presence of pulmonary outflow obstruction might have contributed to the present patient's longevity.
Insufficiency of the muscular atrioventricular valve in the heart of a blue-fronted Amazon (Amazona aestiva aestiva).
After 2 months of the primary surgery, the patch dehiscence was noted along with left atrioventricular valve regurgitation on 2D echocardiography.
Figure-1: Day 7 control chick heart showing two cusps of left atrioventricular valve (1), interatrial septum (IAS), interventricular septum (IVS), right atrioventricular valve (2), left atrium (LA), right atrium (RA ) left ventricle (LV ) and right ventricle (RV) (Low magnification-4x) Haematoxylin and Eosin staining.
S1 is a slightly low-pitch sound that is heard the loudest at the apical region as the result of the closure of atrioventricular valve while S2 is a slightly high-pitch sound heard at the apical region as the result of the closure of arterial valve.
Also in the bicaval technique, with the protection of the right atrial anatomy, the atrioventricular valve function is also protected.
Two-thirds of patients with DCM, especially those over 55 years of age, have persistently low arterial pressure, ventricular arrhythmias and/or atrioventricular valve incompetence and die within 5 years of their first symptom.
Congestive heart failure associated with myxomatous degeneration of the left atrioventricular valve in a parakeet.