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Julio E. Perez has written: 'Doppler echocardiography' -- subject(s): Case studies, Diagnosis, Diseases, Doppler echocardiography, Echocardiography, Heart valves
Echocardiography uses sound waves to make images of the heart. These images can show if there are any abnormalities of the heart valves.
Miguel Zabalgoitia has written: 'Echocardiography of prosthetic heart valves' -- subject(s): Echocardiography, Evaluation, Heart valve prosthesis, Heart valves, Ultrasonic imaging, Ultrasonography
Doppler echocardiography employs a special microphone that allows technicians to measure and analyze the direction and speed of blood flow through blood vessels and heart valves
They would be considered incompetent valves because they are not working properly. You need all the vein valves to work properly for maximum functioning.
closed and closed
Hear disease
the opening and clsoing of valves that creates two beats
AV valves close during the systole phase of the cardiac cycle.
A normal transesophageal echocardiogram shows a normal heart structure and the normal flow of blood through the heart chambers and heart valves.
Valves are made from metals, including brass, bronze, iron, steel, and alloys, as well as from plastics.
I think "poorly spelled" says it best.