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Abstract：
This paper presents two cases of human hearts (a 75-year-old woman and an 88-year-old man) with double posterior descending arteries (PDA) of various sizes originating from the right coronary artery, mainly supplying the interventricular septum as well as the posterior walls of both heart ventricles in a different scope. In the analysis of the arterial vasculature, a range of aspects were considered, such as the point of exit of the right coronary artery, the course of the vessel, the range of the blood supply of the interventricular septum and both ventricles, as well as selected morphometric parameters that were simultaneously compared with one another. These atypical changes presented based on the example of the analyzed cases will certainly constitute a valuable source of information for cardiac surgeons and interventional cardiologists in planning operations.
摘要：
本文介绍了两例人类心脏（一名75岁的女性和一名88岁的男性），其双后降支动脉（PDA）起源于右冠状动脉，主要供应不同范围的室间隔以及两个心室的后壁。在动脉脉管系统的分析中，考虑了一系列方面，比如右冠状动脉的出口点，船只的航向，室间隔和两个心室的血液供应范围，以及同时相互比较的选定形态参数。根据分析病例的示例提出的这些非典型变化无疑将为心脏外科医师和介入心脏病学家计划手术提供宝贵的信息来源。
