Correlation between Pre-Systolic Forward Flow and Diastolic Function
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چکیده
Left ventricular out flow tract (LVOT) pre-systolic forward flow by spectral Doppler is an interesting phenomenon (Figure 1). However, its significance is not well defined. It was classically suggested to be caused by stiff ventricle and elevated left ventricular end diastolic pressure (LVEDP) as atrial contraction will further increase the pressure in the left ventricle causing early premature forward flow across the aortic valve. However, that was not proved.
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