semilunar valve


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semilunar valve

[¦sem·i′lü·nər ′valv]
(anatomy)
Either of two tricuspid valves in the heart, one at the orifice of the pulmonary artery and the other at the orifice of the aorta.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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The earliest anlage of the semilunar valves was first observed in 2.5 cm CVRL buffalo foetus in aorta (Figure 15) and pulmonary artery.
Embryonic development of heart in Indian buffalo (Bubalus bubalis)
At early embryonic stages endocardial cushion tissue is positioned in the primitive AVC and OFT, which later on will contribute to formation of the TV and MV and Ao and PT semilunar valves. Some clinical studies argued that AV valve regurgitation is a common phenomenon during the first trimester of pregnancy [20].
Echocardiographic assessment of embryonic and fetal mouse heart development: a focus on haemodynamics and morphology
This defect may be found anywhere from just above the semilunar valves to the more distal ascending aorta and main pulmonary artery.
Aortopulmonary window
Medical professionals refer to them as the first heart sound ([S.sub.1]) and the second heart sound ([S.sub.2]), produced by the closing of the atrioventricular valves and semilunar valves. A third heart sound is normal in children and young adults, but can be indicative of heart failure in people who are older than 40.
Listening to her heart: personal tragedy drives engineer to market a device that can detect coronary artery disease
A loud, single [S.sub.2] indicates pulmonary hypertension (with RV overload) or congenital heart disease involving the semilunar valves. Murmurs are graded 1-6/6, and are timed as early, middle or late systolic.
How do you deal with anaesthesia in a child with a murmur?
The semilunar valves are formed from three small tubercles of tissue that are (overriding), a small pulmonary outflow tract, and the inability of the ventricular septum to close.
The Embryology of Congenital Heart Defects
QAV is a rare abnormal development of semilunar valves that has been reported in 0.008%, 0.043%, and 1% in, respectively, autopsy series, two-dimensional TTE, and in aortic valve surgery [6].
Type A Quadricuspid Aortic Valve Infective Endocarditis Complicated by Multiple Aortocardiac Fistulae: Case Report and Brief Literature Review

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