[Cinegeometric analysis of left ventricular function in normals and in patients with isolated stenosis of the ramus anterior descendens (author's transl)]

Abstract

The left ventricular function was evaluated by a cineangiographic method. 28 normals and 36 patients with an isolated stenosis of the anterior descending branch of the left coronary artery underwent this procedure. From single plane RAO-LV-cineangiograms following parameters were calculated: LV-volumens (EDV, ESV) according to the area-length method, ejection fraction (EF), percentage shortening of the medial perpendicular short axis (delta M, delta MPL), mean velocity of circumferential fiber shortening (VCF, VCFPL). Patients with comparable ramus anterior descendens branch findings can have normal- or abnormal pattern of LV-contraction. The critical cineangiographic parameters of left ventricular function are significantly decreased at rest in ramus anterior descendens lesions with normal systolic anterior wall motion in comparison to the normal collective. Hypokinesis, Akinesis and aneurysms deteriorate parameters of LV-function.