Rabkin I Kh, Ovchinnikov V I, Iudin A L, Abugov A M, Shabalkin B V
Kardiologiia. 1989 Aug;29(8):12-5.
An examination was made of 38 patients undergone aortocoronary bypass surgery. Comparing the density of content in the aorta and shunt before and after bolus contrast in computerized tomography makes it possible to evaluate the patency of the aortocoronary shunt. A shunt patency coefficient (SPC) was proposed, which fitted the ratio of density differences in the shunt to those in the lumen of the ascending aorta before and after the injection of a contrast agent. SPC equal to 0.5 or more is indicative of a good patency of the aortocoronary shunt, but that being 0.3 or less suggests no or extremely poor function of the shunt. SPCs that are equal to 0.3-0.5 are transient indicators of its patency.
对38例接受主动脉冠状动脉搭桥手术的患者进行了检查。通过计算机断层扫描比较团注造影剂前后主动脉和分流器中的内容物密度，能够评估主动脉冠状动脉分流器的通畅情况。提出了分流器通畅系数（SPC），它等于注射造影剂前后分流器中密度差与升主动脉腔内密度差之比。SPC等于或大于0.5表明主动脉冠状动脉分流器通畅良好，而SPC等于或小于0.3则表明分流器无功能或功能极差。SPC等于0.3 - 0.5是其通畅的暂时指标。
