title: Double-chambered right ventricle: surgical experience and anatomical considerations.
abstract: Fourteen patients with double-chambered right ventricle underwent surgical treatment and repair of associated anomalies. The anomalous muscle band was isolated in 5 cases, associated with membranous ventricular septal defect in 7, with discrete sub-aortic stenosis in one and with double outlet right ventricle in one. All patients survived. The obstructing muscular band was a hypertrophic structure identifiable either with a displaced moderator band, still related to the anterior papillary muscle, or with a giant septoparietal band, inserting to the anterior free wall and occasionally present in normal hearts. According to this interpretation, referring the obstructive band to the septomarginal complex, double-chambered right ventricle should not be regarded strictly as a truncoconal malformation.
mesh_terms: D000293:Adolescent; D000328:Adult; D006328:Cardiac Catheterization; D006332:Cardiomegaly / Q000209:etiology / Q000503:physiopathology; D002648:Child; D002675:Child, Preschool; D004562:Electrocardiography; D005260:Female; D006352:Heart Ventricles / Q000002:abnormalities* / Q000033:anatomy & histology / Q000601:surgery; D006801:Humans; D007223:Infant; D008297:Male