Sinus tachycardia is associated with impaired exercise tolerance following heart transplantation

Yael Peled, Sara Varnado, Brian D. Lowes, Ronald Zolty, Elizabeth R. Lyden, Michael J. Moulton, John Y. Um, Eugenia Raichlin

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Background: Sinus tachycardia often presents in heart transplantation (HTx) recipients, but data on its effect on exercise performance are limited. Methods: Based on mean heart rate (HR) value 3 months after HTx, 181 patients transplanted from 2006 to 2015 at University of Nebraska Medical Center were divided into two groups: (i) HR<95 beats/min (bpm, n=93); and (ii) HR≥95 bpm (n=88). Cardiopulmonary exercise testing (CPET) was performed 1 year after HTx. Results: Mean HR at 3 months post-HTx was 94±11 bpm and did not change significantly at 1 year post-HTx (96±11 bpm, P=.13). HR≥95 bpm at 3 months was associated with younger donor age (OR 1.1; CI 1.0-1.1, P=.02), female donors (OR −2.4; CI 1.16-5.24 P=.02), and lack of donors' heavy alcohol use (OR −0.43; CI 0.17-0.61; P=.04). HR≥95 bpm at 3 months post-HTx was independently associated with decreased exercise capacity in metabolic equivalent (P=.008), reduced peak VO2 (P=.006), and percent of predicted peak VO2 (P=.002) during CPET. Conclusions: HR≥95 at 3 months following HTx is associated with reduced exercise tolerance in stable HTx recipients. Medical HR reduction after HTx could improve exercise performance after HTx and merits further investigation.

Original languageEnglish (US)
Article numbere12946
JournalClinical Transplantation
Volume31
Issue number5
DOIs
StatePublished - May 2017

Keywords

  • complication
  • heart (allograft) function/dysfunction
  • quality of life

ASJC Scopus subject areas

  • Transplantation

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