ABSTRACT
Two cases of laminar flow at the venous valves were found to produce a tapered appearance of the vein grafts, similar to spasm, during angiography. This possibility should be kept in mind when considering the diagnosis of spasm in a vein graft during postoperative angiographic studies. In addition, the follow-up of these cases suggests that valves may predispose to later stenosis or occlusion of the vein grafts.
Subject(s)
Coronary Artery Bypass/adverse effects , Saphenous Vein/pathology , Vasoconstriction , Adult , Aged , Angiography , Diagnosis, Differential , Humans , Male , Saphenous Vein/diagnostic imaging , Saphenous Vein/transplantationABSTRACT
In order to assess myocardial perfusion of Vineberg implants, tracer particles (99mCc and 131I-MAA) were injected into the internal mammary implants of 7 patients (6 years after the operation) after selective contrast visualization. The myocardial perfusion images were correlated with the internal mammary arteriographic findings. Of those patients with patent implants with communication, the myocardial scintigrams demonstrated even distribution of radioactive particles reflecting myocardial perfusion at the capillary or precapillary bed.
