Scientific prognostication of distant results in reconstructive surgery in illeofemoral area for patients with obliterating atherosclerosis using morphometria of the vascular wall. The study investigates 49 patients operated on aortoilliac arterial segment. Observation period took 5 years. Late thrombotic reocclusions were presented in 16 patients (32,6%). Morphological investigations with morphometria of vascular walls were carried out. During the early and late postoperative period permeability of reconstructed zones, as well as main artery permeability further than anaestamosis zone were estimated. Prognostically unfavorable signs in respect of high possibility of thrombotic reocclusions in late postoperative period are as follows:presence of macrophages in the arteries, intimae hyperplasia with degenerative elements etc. According to this data a prognostic model for determination of late postoperative thrombotic reocclusions for patients with aortoilliac arterial surgery was created

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