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Evaluation of Congenital Cardiac Anomalies Associated with Side by Side Ventricle

Journal of the Korean Pediatric Society 1992;35(2):168-173.
Published online February 15, 1992.
Evaluation of Congenital Cardiac Anomalies Associated with Side by Side Ventricle
Young Sook Kim, Jong Kyun Lee, Jun Hee Sul, Sung Kyu Lee, Dong Shik Chin
Department of Pediatric Cardiology, Yonsei University, College of Medicine, Seoul, Korea
Side by Side Ventricle이 동반된 선천성 심질환의 관찰
김영숙, 이종균, 설준희, 이승규, 진동식
연세대학교 의과대학 심장혈관센터 소아심장과
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.
Key Words: Side by sede ventricle

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