title: Pulmonary artery banding before the Damus-Kaye-Stansel procedure.
abstract: Subaortic stenosis (SAS) in a single ventricle leads to myocardial hypertrophy and compromises Fontan results. Moreover, controversy exists concerning the optimal surgical strategy for relieving SAS. We have applied pulmonary artery banding (PAB) before the Damus-Kaye-Stansel procedure (DKS), and here we analyze factors that influence systemic ventricular compliance. Thirteen patients underwent PAB before DKS. Median PAB duration was 5.5 months (range, 20 days to 17.7 months). Procedures administered concomitantly with DKS were Blalock-Taussig shunt (n = 6), bidirectional cavopulmonary shunt (n = 5), and Fontan operation (n = 2). All survived and were doing well after a median follow-up 2.7 years. Cardiac catheterization before DKS showed that the mean pressure gradient across the systemic ventricular outflow tract and PAB were 20.6 +/- 10.1 and 67.4 +/- 10.2 mmHg, respectively. After DKS, systemic ventricular end diastolic pressure (SVEDP) was significantly correlated with PAB duration (r = 0.65, p = 0.022), but not with PAB or systemic ventricle outflow tract pressure gradients. After DKS, SVEDP decreased or fell to within the range in patients with PAB duration less than 7 months (p < 0.05). Seven patients had a successful Fontan operation, and 6 without risk factors are waiting operation. SVEDP was found to be correlated with PAB duration, and our findings indicate that short-term PAB can be considered a safe option in patients with a single ventricle and SAS.
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Pusan National University Hospital, Busan, South Korea.
authors.forename: Yun Hee
authors.initials: YH
authors.lastname: Chang
authors.forename: Woong-Han
authors.initials: WH
authors.lastname: Kim
authors.forename: Jae Young
authors.initials: JY
authors.lastname: Lee
authors.forename: Soo-Jin
authors.initials: SJ
authors.lastname: Kim
authors.forename: Cheul
authors.initials: C
authors.lastname: Lee
authors.forename: Seong Wook
authors.initials: SW
authors.lastname: Hwang
authors.forename: Si Chan
authors.initials: SC
authors.lastname: Sung
mesh_terms: D021922:Discrete Subaortic Stenosis / Q000150:complications / Q000151:congenital / Q000601:surgery*; D005500:Follow-Up Studies; D018729:Fontan Procedure / Q000379:methods*; D006330:Heart Defects, Congenital / Q000150:complications / Q000601:surgery*; D006352:Heart Ventricles / Q000002:abnormalities*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D011651:Pulmonary Artery / Q000601:surgery*; D012189:Retrospective Studies; D016896:Treatment Outcome; D014656:Vascular Surgical Procedures / Q000379:methods*