title: Usefulness of banding of the pulmonary trunk with single ventricle physiology at risk for subaortic obstruction.
abstract: This study addresses the effects of early banding of the pulmonary trunk and subsequent management of subaortic obstruction on the attainment of acceptable pre-Fontan hemodynamics in patients with a single left ventricle and aorta arising from an outflow chamber. We report our experience with 26 patients seen at our institution between January 1984 and December 1994 with a diagnosis of double-inlet left ventricle or tricuspid atresia and transposed great arteries, who were initially managed with pulmonary artery banding in the first 6 months of life. Pulmonary artery band placement was performed at an age of 2.1 +/- 1.8 months (mean +/- SD). Associated aortic arch abnormalities were present in 8 patients (31%). There were 19 patients (73%) who underwent treatment with a Damus-Kaye-Stansel procedure or ventricular septal defect (VSD) enlargement for a significant subaortic gradient or morphologically small VSD, alone or in conjunction with a Glenn or Fontan procedure. Eighteen of 26 patients (69%) underwent cardiac catheterization to assess their candidacy for the Fontan operation. Of this group, 16 were classified as low to moderate risk and 2 as high-risk Fontan candidates, based on hemodynamic criteria. The cumulative mortality for the entire cohort was 19%. Our results suggest that this high-risk group of patients can undergo effective pulmonary artery banding as an initial palliative step, with subsequent intervention for subaortic ob- struction when it is documented or highly suspected, and that acceptable pre-Fontan hemodynamic parameters can be achieved.
authors.affiliation: Division of Pediatric Cardiology, University of California at Los Angeles School of Medicine, USA.
authors.forename: R A
authors.initials: RA
authors.lastname: Jensen
authors.forename: R G
authors.initials: RG
authors.lastname: Williams
authors.forename: H
authors.initials: H
authors.lastname: Laks
authors.forename: D
authors.initials: D
authors.lastname: Drinkwater
authors.forename: S
authors.initials: S
authors.lastname: Kaplan
mesh_terms: D006328:Cardiac Catheterization; D004452:Echocardiography; D005260:Female; D018729:Fontan Procedure; D006330:Heart Defects, Congenital / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D006439:Hemodynamics; D017052:Hospital Mortality; D006801:Humans; D007223:Infant; D008297:Male; D011651:Pulmonary Artery / Q000601:surgery*; D011662:Pulmonary Subvalvular Stenosis / Q000503:physiopathology / Q000601:surgery*; D014188:Transposition of Great Vessels / Q000601:surgery; D018785:Tricuspid Atresia / Q000601:surgery