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Introduction
 Some of the
earliest uses for Doppler echocardiography were in detection of
valvular insufficiencies. The first Doppler echocardiography studies
of valvular regurgitation were, however, focused outside the heart.
As early as 1971, it was demonstrated that retrograde blood flow
could be detected during diastole in the subclavian arteries of
patients with aortic insufficiency. At about the same time, certain
abnormalities were detected in the jugular veins of patients with
tricuspid insufficiency. Since then, there have been many studies
using direct evaluation of the heart valves for insufficiency, and
it is now becoming generally accepted that Doppler is a fairly sensitive
and specific method for the detection of valvular insufficiency.
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BASIC ECHO: 2D
Echo | Heart Valves |
Heart Muscle | Congenital
Disease
BASIC DOPPLER: Doppler
Exam | Regurgitation
| Stenosis | Flow
Imaging
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