정상 및 이상심장에서의 우심실의 형태학적 관찰

Abstract

Gross morphology of the right ventricular inflow and outflow tracts was analyzed to assess their normal variations and abnormal findings associated with various cardiac anomalies. Twenty cases of hearts from autopsy series of the Seoul National University Hospital were used, including 8 cases of abnormal hearts, The diagnoses of abnormal hearts were single ventricle, truncus arteriosus, tetralogy of Fallot, transposition of great arteries, double outlet right ventricle, atrioventricular canal and ventricular septal defects respectively. The results are as follows: 1. The size and location of papillary muscles showed some variation in normal and abnormal hearts. The medial papillary muscle showed some variation within normal heart group. The muscle portion of the medial papillary muscle was regularly absent in abnormal hearts. 2. Bulbar raphe showed anterior convexity in normal hearts but variations of the depth and anterior convexity were present. Bulbar raphe was regularly absent in abnormal hearts. 3. Septal and parietal bands showed mild variation in normal hearts. They were fused together in abnormal hearts. The bands of hearts with truncus arteriosus, transposition of great arteries or double outlet right ventricle were absent or ambiguous. 4. Abnormalities of resorption, rotation and inversion of conal septum and bulboatrio-ventricular ledge seem to result in various degrees of bulboventricular malformation and also affect the structural components of inflow and outflow tract of the right ventricle.