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Fate of Ventricular and Valve Performance Following Early Bidirectional Glenn Procedure After Norwood Operation Controlled for Hypoplastic Left Heart Syndome Anatomic Subtype

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Abstract

The Norwood operation (NO) with a right ventricle (RV)-to-pulmonary artery (PA) shunt (NRVPA) is reportedly associated with early hemodynamic advantage. Shunt strategy has been implicated in ventricular function. Outcomes after NRVPA compared with classic procedure as part of a strategy involving early bidirectional Glenn (BDG) procedure were analyzed with reference to RV, tricuspid, and neoaortic valve performance. Between January 2005 and December 2010, 128 neonates with hypoplastic left heart syndrome (HLHS) underwent NO. Controlled for aortic/mitral stenosis (AS–MS) subtype, 28 patients underwent NRVPA (group A), and 26 patients had classic procedure (group B). The patients with a non-HLHS single-ventricle anatomy and those who had undergone a hybrid approach for HLHS were excluded from the study. The mean age at NO was 6.8 ± 3.5 days in group A and 6.9 ± 3.6 days in group B. Transthoracic echocardiographic evaluation (TTE) after NO (TTE-1) at the midinterval between NO and BDG (TTE-2), before BDG (TTE-3), before Fontan (TTE-4), and at the last follow-up evaluation (TTE-5) was undertaken. Cardiac catheterization was used to assess hemodynamic parameters before the Glenn and Fontan procedures. The operative, interstage, and pre-Fontan survival rates for AS–MS after NO were respectively 88.1 % (90.3 % in group A vs. 84.7 % in group B; p = 0.08), 82.5 % (82.7 % in group A vs. 81.8 % in group B; p = 0.9), and 80.7 % (79.5 % in group A vs. 81.8 % in group B; p = 0.9). The median follow-up period was 39.6 months (interquartile range 2.7–4.9 months). The RV global function, mid- and longitudinal indexed dimensions, fractionated area change before BDG (TTE-1, TTE-2, TTE-3) and after BDG (TTE-4, TTE-5), and right ventricular end-diastolic pressure did not differ statistically between the groups (p > 0.05). No statistically significant difference in tricuspid or neoaortic intervention was found between the groups (p > 0.05). Controlled for the AS–MS HLHS subtype, shunt strategy showed no midterm survival or hemodynamic (ventricular or valve) impact. At midterm, the follow-up need for neoaortic or tricuspid valve surgical intervention was not affected by shunt selection. The structural ventricular adaptation after reversal of shunt physiology was irrespective of shunt strategy.

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Authors and Affiliations

  1. Division of Pediatric Cardiovascular Surgery, Advocate Hope Children’s Hospital, The Heart Institute for Children, Oak Lawn, IL, USA

    Anastasios C. Polimenakos, Chawki F. El-Zein & Michel N. Ilbawi

  2. Division of Pediatric Cardiovascular Surgery and Thoracic Surgery, Rush Center for Congenital and Structural Heart Disease, Chicago, IL, USA

    John W. Bokowski, Hani S. Ghawi, Chawki F. El-Zein & Michel N. Ilbawi

  3. Division of Pediatric and Congenital Cardiothoracic Surgery, The Heart Center for Children, J. Weis Children’s Hospital, Geisinger Clinic, 100 North Academy Avenue, MC 27-00, Danville, PA, 17837, USA

    Anastasios C. Polimenakos

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  1. Anastasios C. Polimenakos
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  2. John W. Bokowski
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  3. Hani S. Ghawi
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  4. Chawki F. El-Zein
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Correspondence to Anastasios C. Polimenakos.

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Polimenakos, A.C., Bokowski, J.W., Ghawi, H.S. et al. Fate of Ventricular and Valve Performance Following Early Bidirectional Glenn Procedure After Norwood Operation Controlled for Hypoplastic Left Heart Syndome Anatomic Subtype. Pediatr Cardiol 35, 332–343 (2014). https://doi.org/10.1007/s00246-013-0780-7

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  • DOI: https://doi.org/10.1007/s00246-013-0780-7

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