All issues > Volume 35(2); 1992

Original Article

J Korean Pediatr Soc. 1992;35(2):168-173. Published online February 15, 1992.

Evaluation of Congenital Cardiac Anomalies Associated with Side by Side Ventricle

Young Sook YS Kim¹, Jong Kyun JK Lee¹, Jun Hee JH Sul¹, Sung Kyu SK Lee¹, Dong Shik DS Chin¹

¹Department of Pediatric Cardiology, Yonsei University, College of Medicine, Seoul, Korea

Abstract

Many forms of congenital heart disease are arrests in normal development. An understanding of the relevent embryology and pathology is basic to the understanding, accurate diagnosis, and successful management of congenital heart disease. The heart appears on the 18th day of life and its formation is normally completed by about the 40th day of life when the embryo is approximately 15 mm long. The cardiogenic crescent of the precardiac mesoderm appears at 18 days of age, this being the first appearance of the heart in man. At this time the cardiogenic crescent becomes straight tube. During the 20th to the 22nd day of life, the human heart probably begins to beat at the straight tube and the straight tube loops or folds in a rightward or dextral direction forming a D-loop. The heart is right-sided and the ventricular D-loop descends and starts to swing leftward. Now the entricular apex points more or less directly anteriorly (ventrally) : i.e., mesocardia is present. The mesocardia, which means the midline of the heart, neither is right-sided (dextrocardia) nor left-sided (levocardia). The RV and LV are side-by-side. And then the more leftward movement of the ventricles and ventricular apex leads to a normal Lt. sided heart. Developmentally, the side by side ventricle is on a mesocardia. However, we also experienced on dextrocardia or levocardia. We have studied 30 cases of the side by side ventricle and therefore report the position of the heart and its associated cardiac anomalies.

Keywords :Side by sede ventricle