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Recovery of Ventriculo-Atrial Conduction after Adrenaline in Patients Implanted with Pacemakers

Gabriel Cismaru1, Gabriel Gusetu1, Lucian Muresan1

  • 1Department of Cardiology, Rehabilitation Hospital, University of Medicine and Pharmacy "IuliuHatieganu," Cluj-Napoca, Romania.

Pacing and Clinical Electrophysiology : PACE
|April 9, 2015
PubMed

Insights

Adrenaline infusion facilitated recovery of ventriculo-atrial (VA) conduction in 10.9% of pacemaker patients lacking it initially. This stress-induced recovery may explain pacemaker syndrome and defibrillator detection issues.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Medical Device Technology

Background:

  • Ventriculo-atrial (VA) conduction issues pose risks for pacemaker and defibrillator recipients.
  • The impact of physiological stress on impaired VA conduction recovery is not well understood.
  • Adrenaline's effect on VA conduction recovery is largely unstudied compared to other agents.

Purpose of the Study:

  • To investigate whether adrenaline can restore impaired ventriculo-atrial (VA) conduction in patients with pacemakers.
  • To assess adrenaline's role as a stress surrogate for testing conduction recovery.

Main Methods:

  • A prospective study of 61 consecutive patients undergoing pacemaker implantation.
  • Assessment of baseline VA conduction during the implantation procedure.
  • Administration of adrenaline infusion to evaluate conduction recovery in patients with impaired VA conduction.

Main Results:

  • 24.6% of patients had spontaneous VA conduction at baseline.
  • 75.4% of patients initially showed no VA conduction.
  • Adrenaline infusion led to VA conduction recovery in 10.9% of patients who initially lacked it.

Conclusions:

  • Adrenaline can induce VA conduction recovery in a subset of patients with absent baseline conduction.
  • Stress-induced VA conduction recovery may contribute to pacemaker syndrome and implantable cardioverter-defibrillator detection problems.
Abstract

Keywords:
ICDadrenalineendless loop tachycardiapacemaker syndromeventriculoatrial conduction

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