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Clinical and Hemodynamic Characteristics of Double Chambered Right Ventricle.

Journal of the Korean Pediatric Society 1984;27(10):982-990.
Published online October 31, 1984.
Clinical and Hemodynamic Characteristics of Double Chambered Right Ventricle.
Seok Chol Jeon1, Seung Ro Lee1, Heung Seok Seo1, Sam Hyun Kim2, Hurn Chae2, Kun Ho Kim2, Seung Jae Yang3, Hahng Lee3, Heung Jae Lee3
1Dept. of Radiology College of Medicine, Hanyang University
2Dept. of Pediatrics College of Medicine, Hanyang University
3Dept. of Thoracic surgery College of Medicine, Hanyang University
우심실양분증의 임상적 고찰
전석철1, 이승로1, 서홍석1, 김삼현2, 채 헌2, 김근호2, 양승재3, 이 항3, 이흥재3
1한양대학교 의과대학 방사선과학교실
2한양대학교 의과대학 소아과학교실
3한양대학교 의과대학 흉부외과학교실
During the period from May 1981 to Feb. 1984, authors experienced 15 cases of double chambered right ventricle (D.C.R.V.) at Hanyang University Hospital. Among these 15 cases of D.C.R.V., 13 cases were confirmed by open heart surgery. We analysed the physical characteristics and echocardiographic, cardiac catheterization, angiographic and operative findings. Results are as follows; 1) Authors observations suggest that right ventricular obstructing lesions in patients with D.C.R.V. is not moderator band, but aberrant muscle bundle. 2)Scrutinizing the findings and the characteristics of various clinical manifestations and echocardiogram, it was possible to suspect intracavitary obstructive lesion in 8 cases among 15 cases of confirmed D.C.R.V. before performing cardiac catheterization and angiography. 3)In most of the cases, variable intracavitary pressure gradient in right ventricular chamber was demonstrable during cardiac catheterization, but it was not an essential feature in early mild form D.C.R.V. 4)Most reliable diagnostic feature of D.C.R.V. before surgery was the filling defect of aberrant muscle bundle on right ventriculogram. 5) Significant 的rial change in physical characteristics, E.K.G. and chest X-ray findings were observed in two cases who were followed up for over 4 years before surgery. Moreover definite development of a large pressure gradient over 4 years period was emonstrable on follow up cardiac catheterization in one case. Therefore it is highly suggested that right ventricular obstruction in D.C.R.V. progresses with time. 6)Surgical repair were performed in 13 cases without perioperative mortality, and no significant post-operative complications such as conduction abnormalities were observed after excision of aberrant muscle bundle. 7) From the view point of the progressive nature of R.V. obstruction in D.C.R.V. and the low risk of perioperative procedure, we recommend early surgical repair in cases with D.C.R.V.
Key Words: Double chambered right ventricle (D. C. R. V.), Aberrant muscle bundle, Right ventriculogram, Hemodynamics

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