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Asian Cardiovasc Thorac Ann 2005;13:127-130
© 2005 Asia Publishing EXchange Ltd

ORIGINAL CONTRIBUTION

Double-Chambered Right Ventricle in Adulthood

Mitsugi Nagashima, MD, Tetsuo Tomino, MD, Harumitsu Satoh, MD, Tatsuhiro Nakata, MD, Takashi Ohtani, MD, Hiroyuki Saito, MD

Department of Cardiovascular Surgery, Ehime Prefectural Central Hospital Ehime, Japan

For reprint information contact: Mitsugi Nagashima, MD Tel: 81 89 947 1111 Fax: 81 89 943 4136 Email: mitsugi{at}aqua.plala.or.jp, Department of Cardiovascular Surgery, Ehime Prefectural Central Hospital, 83 Kasuga-cho, Matsuyama city, Ehime 790-0024, Japan.

Patients with double-chambered right ventricle presenting with symptoms in adulthood are rare. From 1990 to 2004, 4 adults and 9 children with double-chambered right ventricle underwent surgical correction. The surgical results and clinical data of the adults were compared with those of the pediatric patients. All adult patients had dyspnea on exertion, 3 children showed growth delay but the others were asymptomatic. The mean age at operation was 44.5 ± 6.3 years in adults and 5.2 ± 1.9 years in children. The mean pressure gradient between the anatomically lower right ventricle and the pulmonary artery was significantly higher in adults than in children (91.8 ± 14.1 vs. 42.2 ± 5.9 mm Hg). The pulmonary-to-systemic flow ratio in adults was significantly lower than in pediatric patients (1.2 ± 0.2 vs. 1.8 ± 0.3). All adults and 8 of the 9 children survived. There were no late deaths or re-operations, and all survivors were in New York Heart Association functional class I. Surgical correction of double-chambered right ventricle in adults gave satisfactory midterm results although right ventricular outflow tract obstruction and clinical symptoms were severe in these patients.






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