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Standardisation of management after Norwood operation has not improved 1-year outcomes

Published online by Cambridge University Press:  26 October 2020

Andrea Pisesky*
Affiliation:
Division of Paediatric Cardiology, Labatt Family Heart Centre, Hospital for Sick Children, Toronto, Ontario, Canada
Shilpa Shah
Affiliation:
Department of Anesthesiology and Critical Care Medicine, Children’s Hospital, Los Angeles, CA, USA Keck School of Medicine, Department of Paediatrics, University of Southern California, Los Angeles, CA, USA
Michael Seed
Affiliation:
Division of Paediatric Cardiology, Labatt Family Heart Centre, Hospital for Sick Children, Toronto, Ontario, Canada
Steven M. Schwartz
Affiliation:
Division of Paediatric Cardiology, Labatt Family Heart Centre, Hospital for Sick Children, Toronto, Ontario, Canada Department of Critical Care Medicine, Labatt Family Heart Centre, Toronto, Ontario, Canada
Jennifer Russell
Affiliation:
Division of Paediatric Cardiology, Labatt Family Heart Centre, Hospital for Sick Children, Toronto, Ontario, Canada
Paula Pereira-Solomos
Affiliation:
Division of Paediatric Cardiology, Labatt Family Heart Centre, Hospital for Sick Children, Toronto, Ontario, Canada
Jennifer Thomas
Affiliation:
Division of Paediatric Cardiology, Labatt Family Heart Centre, Hospital for Sick Children, Toronto, Ontario, Canada
Glen Van Arsdell
Affiliation:
Department of Surgery, Ronald Reagan UCLA Medical Center, University of California, Los Angeles, CA, USA
Alejandro Floh
Affiliation:
Division of Paediatric Cardiology, Labatt Family Heart Centre, Hospital for Sick Children, Toronto, Ontario, Canada Department of Critical Care Medicine, Labatt Family Heart Centre, Toronto, Ontario, Canada
*
Author for correspondence: Dr Andrea Pisesky, The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada M5G 1X8. Tel: +1 416 813 7500; Fax: +1 416 813 7299. E-mail: [email protected]

Abstract

Introduction:

Treatment of hypoplastic left heart syndrome varies across institutions. This study examined the impact of introducing a standardised programme.

Methods:

This retrospective cohort study evaluated the effects of a comprehensive strategy on 1-year transplant-free survival with preserved ventricular and atrioventricular valve (AVV) function following a Norwood operation. This strategy included standardised operative and perioperative management and dedicated interstage monitoring. The post-implementation cohort (C2) was compared to historic controls (C1). Outcomes were assessed using logistic regression and Kaplan–Meier analysis.

Results:

The study included 105 patients, 76 in C1 and 29 in C2. Groups had similar baseline characteristics, including percentage with preserved ventricular (96% C1 versus 100% C2, p = 0.28) and AVV function (97% C1 versus 93% C2, p = 0.31). Perioperatively, C2 had higher indexed oxygen delivery (348 ± 67 ml/minute/m2 C1 versus 402 ± 102ml/minute/m2 C2, p = 0.015) and lower renal injury (47% C1 versus 3% C2, p = 0.004). The primary outcome was similar in both groups (49% C1 and 52% C2, p = 0.78), with comparable rates of death and transplantation (36% C1 versus 38% C2, p = 0.89) and ventricular (2% C1 versus 0% C2, p = 0.53) and AVV dysfunction (11% C1 versus 11% C2, p = 0.96) at 1-year. When accounting for cohort and 100-day freedom from hospitalisation, female gender (OR 3.7, p = 0.01) increased and ventricular dysfunction (OR 0.21, p = 0.02) and CPR (OR 0.11, p = 0.002) or ECMO use (OR 0.15, p = 001) decreased the likelihood of 1-year transplant-free survival.

Conclusions:

Standardised perioperative management was not associated with improved 1-year transplant-free survival. Post-operative ventricular or AVV dysfunction was the strongest predictor of 1-year mortality.

Type
Original Article
Copyright
© The Author(s), 2020. Published by Cambridge University Press

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