0 a device for allowing a liquid or gas to pass through an opening in one direction only -- van
a safety valve.
1 a structure with the same effect in an animal body -- van tim
2 a type of electronic component found in many, especially older, types of television, radio etc -- đèn chân không
a valve amplifier.
In life the tellin would have had two valves, but only one is preserved here.
The single valves are preserved in a fine-grained limestone.
There was no neonate with regurgitation involving four valves.
Bioprosthetic valves have a strong tendency to calcify in children.
At this stage, the wider curved end of the baffle is brought down onto the remnant of the atrial septum between the atrioventricular valves.
Abnormalities of the coronary circulation were not apparent grossly in the specimens with hypertrophied right ventricular myocardium and imperforate pulmonary valves.
Five patients (63%) among those without carditis had abnormal findings of their mitral valves.
Failures of prosthetic valves caused the largest number ofreinterventions.
