title: Double-chambered right ventricle in adulthood.
abstract: 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.
authors.affiliation: Department of Cardiovascular Surgery, Ehime Prefectural Central Hospital, Matsuyama city, Ehime, Japan. mitsugi@aqua.plala.or.jp
authors.forename: Mitsugi
authors.initials: M
authors.lastname: Nagashima
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Tomino
authors.forename: Harumitsu
authors.initials: H
authors.lastname: Satoh
authors.forename: Tatsuhiro
authors.initials: T
authors.lastname: Nakata
authors.forename: Takashi
authors.initials: T
authors.lastname: Ohtani
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Saito
mesh_terms: D000367:Age Factors; D000368:Aged; D001022:Aortic Valve Insufficiency / Q000209:etiology; D006328:Cardiac Catheterization; D017079:Exercise Tolerance; D005260:Female; D006352:Heart Ventricles / Q000002:abnormalities* / Q000601:surgery*; D006801:Humans; D008297:Male; D014694:Ventricular Outflow Obstruction / Q000209:etiology