Preoperative Amiodarone and Primary Graft Dysfunction in Heart Transplantation

Author:

Servais Abigail1ORCID,Lundgren Scott2,Bowman Stephanie1ORCID,Stoller Douglas2,Burdorf Adam2,Hyden Marshall2,Lowes Brian2,Zolty Ronald2,Klepser Don3,Brink Heidi1

Affiliation:

1. Department of Pharmaceutical and Nutrition Care, Nebraska Medicine, Omaha, NE, USA

2. Division of Cardiology, University of Nebraska Medical Center, Omaha, NE, USA

3. College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, USA

Abstract

Background: Preoperative amiodarone effects on postorthotopic heart transplant (OHT) outcomes remain controversial. Objective: The purpose of this study was to determine the effect of cumulative pre-OHT amiodarone exposure on severe primary graft dysfunction (PGD). Methods: We retrospectively reviewed adult OHT recipients between August 2012 and June 2018. Primary outcome was severe PGD in patients receiving amiodarone at 3, 6, and 12 months prior to OHT compared with those not receiving amiodarone. Secondary outcomes included intensive care unit (ICU) and hospital length of stay, duration of mechanical ventilation, early graft failure (EGF), mortality at 3, 6, and 12 months post-OHT, and 30-day incidence of postoperative tachyarrhythmias, bradycardia, permanent pacemaker implantation, and rejection. Results: Incidence of severe PGD was 12.5% in those who received amiodarone compared to 6.8% in those who did not (14 vs 6, P = 0.18). Cumulative preoperative amiodarone significantly increased the odds of severe PGD at 3 months (odds ratio [OR]: 1.03; 95% confidence interval [CI]: 1.001-1.06; P = 0.044) and 6 months (OR: 1.02, 95% CI: 1.003-1.044; P = 0.024) in a multivariate logistic regression. Patients on amiodarone had significantly higher rates of postoperative bradycardia (13.4% vs 4.5%, P = 0.03). Conclusion and Relevance: A trend toward increased PGD was present in patients receiving preoperative amiodarone. This finding combined with the regression showing significantly increased odds of PGD with increasing 3 and 6 month cumulative amiodarone dose is clinically concerning. Escalation of care with pacemaker implantation was required more frequently in patients on pre-OHT amiodarone.

Publisher

SAGE Publications

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