Shanubhogue Sharan, Mohamed Thuslima, Shankar Nachiket
Intern, St. John's Medical College, Bangalore, Karnataka, India.
Department of Anatomy, St. John's Medical College, Bangalore, Karnataka, India.
Indian Heart J. 2017 Jan-Feb;69(1):125-128. doi: 10.1016/j.ihj.2016.07.004. Epub 2016 Jul 11.
The aim of the present study was to determine the variations in the position of the coronary sinus (CS) ostium in normal cadaveric fetal (28 weeks or more) hearts and to assess the impact that these variations had on the dimensions of the triangle of Koch (TK).
This cross-sectional analytical study was conducted on 28 fetal hearts. The dimensions and area of the TK were calculated by two methods, M1 (anatomical) and M2 (clinical). The position of the CS was defined with respect to the tendon of Todaro. Differences between M1 and M2 were estimated using the paired T test. Pearson's correlation coefficient and the adjusted correlation coefficient were used to estimate the strength of association between measurements made by the methods.
Ten (35.7%) cadavers were male and 18 (64.3%) female. The mean gestational age was 32.4±3.3 weeks. Using M1, the mean dimensions of the triangle in millimeters (mm) were 9.2±2.2, 6.6±1.8, and 6±2.4 respectively for a, b and c. Similarly, the dimensions using M2 were 7±2.1, 4.7±1.5, and 4.8±2.2. The area in mm was 20.4±10.4 and 11.7±6.7 using M1 and M2 respectively. All measurements were significantly greater with M1. All correlation coefficients were high and significant. The CS ostium and tendon of Todaro maintained a relatively constant positional relationship.
Significantly higher values were noted in the dimensions of TK using M1. High significant positive correlations were observed in measurements made by the two methods. The CS ostium was relatively constantly placed within the TK.
本研究旨在确定正常尸体胎儿（28周及以上）心脏中冠状窦（CS）口位置的变异情况，并评估这些变异对Koch三角（TK）尺寸的影响。
对28例胎儿心脏进行了横断面分析研究。通过两种方法（M1：解剖学方法；M2：临床方法）计算TK的尺寸和面积。根据Todaro腱确定CS的位置。使用配对t检验估计M1和M2之间的差异。采用Pearson相关系数和校正相关系数估计两种方法测量结果之间的关联强度。
10例（35.7%）尸体为男性，18例（64.3%）为女性。平均孕周为32.4±3.3周。使用M1时，三角形a、b、c边的平均尺寸（毫米）分别为9.2±2.2、6.6±1.8和6±2.4。同样，使用M2时的尺寸分别为7±2.1、4.7±1.5和4.8±2.2。使用M1和M2时的面积（平方毫米）分别为20.4±10.4和11.7±6.7。M1的所有测量值均显著更大。所有相关系数均为高度显著。CS口与Todaro腱保持相对恒定的位置关系。
使用M1时，TK的尺寸显著更高。两种方法的测量结果之间观察到高度显著的正相关。CS口在TK内的位置相对恒定。
