Quantitative assessment of left ventricular diastolic stiffness in man.
نویسندگان
چکیده
An approach to the quantitative assessment of left ventricular (LV) diastolic stiffness in man has been developed utilizing strip-chart recordings of simultaneous ultrasonic LV dimensions, LV pressure, and electrocardiogram (ECG). In 23 patients without regional abnormalities of contraction, LV pressure, and LV internal diameter (D = distance between endocardial surfaces of LV posterior wall and septum at the plane of the mitral valve) were determined at the onset (P1, D1) and peak (P2, D2) of left atrial mechanical systole. In addition, left ventricular volumes, V1 and V2, were calculated from D1 and D2 using a regression formula for end-diastolic volume previously determined from biplane angiographic studies. This allowed calculation of AP/ AD and AP/AV associated with the "a" wave of the LV pressure trace, and these ratios were utilized
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عنوان ژورنال:
- Circulation
دوره 47 3 شماره
صفحات -
تاریخ انتشار 1973