Department of Anatomy, Kathmandu Medical College and Teaching Hospital, Duwakot, Bhaktapur, Nepal.
JNMA J Nepal Med Assoc. 2022 Apr 15;60(248):374-376. doi: 10.31729/jnma.7432.
Cardiac coronary dominance plays a significant role in different clinical conditions and diseases of the heart. As the people of developing and developed nations are having global coronary artery diseases, it is mandatory to have knowledge of coronary artery diseases including cardiac coronary dominance. The aim of this study is to find out the prevalence of the right coronary artery dominance in cadaveric human hearts in a medical college.
A descriptive cross-sectional study was conducted among all 52 preserved hearts as well as the heart isolated from cadavers obtained from the teaching hospital. The study was conducted from 24th June, 2020 to 24th December, 2020 after obtaining ethical clearance from the Institutional Review Committee (Reference number: 2306202004). All cadaveric heart specimens were laelled with numbers and photographed for easy description of anatomical variation related to the coronary artery. Data were entered into Microsoft Excel 2007 and analysed using Statistical Package for the Social Sciences version 20.0. Point estimate at 90% Confidence Interval was calculated along with frequency and proportion for binary data.
Out of 52 undissected isolated cadaveric hearts, the right cardiac dominance was found in 42 (80.76%) (71.77-89.75 at 90% Confidence Interval). The mean diameter of the right coronary artery was found to be 4.06±0.55 mm.
The prevalence of right cardiac dominance in isolated cadaveric hearts was similar to the studies done in a similar setting.
cardiac; coronary arteries; dominance.
心脏冠状动脉优势在不同的临床情况和心脏疾病中起着重要作用。由于发展中国家和发达国家的人们都患有全球性的冠状动脉疾病，因此必须了解包括心脏冠状动脉优势在内的冠状动脉疾病。本研究的目的是在一所医学院确定尸检人心冠状动脉优势的流行率。
在获得机构审查委员会的伦理批准（参考号：2306202004）后，于 2020 年 6 月 24 日至 2020 年 12 月 24 日期间，对教学医院获得的所有 52 个保存心脏以及从尸体中分离出的心脏进行了描述性横断面研究。所有尸体心脏标本均用数字标记并拍照，以便于描述与冠状动脉相关的解剖变异。数据输入 Microsoft Excel 2007 并使用统计软件包 20.0 版进行分析。计算了 90%置信区间的点估计值，以及二进制数据的频率和比例。
在 52 个未解剖的孤立尸体心脏中，发现右心优势占 42 例（80.76%）（90%置信区间为 71.77-89.75）。右冠状动脉的平均直径为 4.06±0.55 毫米。
孤立尸体心脏中右心优势的流行率与类似环境中的研究相似。
心脏；冠状动脉；优势。
