Catecholamine facilitated reentrant ventricular tachycardia: Uncoupling of adenosine's antiadrenergic effects Academic Article uri icon

Overview

MeSH Major

  • Adenosine
  • Anti-Arrhythmia Agents
  • Catecholamines
  • Receptors, Adrenergic
  • Tachycardia, Ventricular

abstract

  • Adenosine has no antiadrenergic (antiarrhythmic) effect in patients with catecholamine-facilitated VT due to structural heart disease. Patients with verapamil-sensitive, left posterior intrafascicular reentry have an unusual dual response to adenosine. In the unstimulated state, adenosine has no effect on basal inward calcium current and, therefore, no effect on VT. However, when induction of VT requires amplification of the inward calcium current through stimulation of cAMP, adenosine sensitivity of VT becomes manifest. These results indicate that with few exceptions, termination of VT with adenosine is strongly suggestive of a cAMP-mediated triggered mechanism rather than reentry.

publication date

  • January 26, 1999

Research

keywords

  • Academic Article

Identity

Language

  • eng

PubMed ID

  • 9930905

Additional Document Info

start page

  • 17

end page

  • 26

volume

  • 10

number

  • 1