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Adenosine and its cardiovascular effects.

A Freilich1, D Tepper

  • 1Cardiology Division, Mt. Sinai Medical Center, New York, NY 10029.

American Heart Journal
|May 1, 1992
PubMed
Summary
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Adenosine is an effective antiarrhythmic drug for supraventricular tachycardia, particularly AV nodal reentry. This nucleoside also shows promise in pharmacologic stress testing, with a favorable safety profile and short half-life.

Area of Science:

  • Cardiology
  • Pharmacology

Background:

  • Adenosine is an endogenous nucleoside with recently approved antiarrhythmic properties.
  • It is indicated for diagnosing and treating supraventricular tachycardia, especially AV nodal reentry.

Purpose of the Study:

  • To highlight the clinical utility of adenosine as an antiarrhythmic agent.
  • To discuss the investigational use of adenosine in pharmacologic stress testing.
  • To review the safety profile and future potential of adenosine in cardiovascular medicine.

Main Methods:

  • Review of adenosine's mechanism of action at the cellular level, involving potassium channels and myocyte hyperpolarization.
  • Discussion of adenosine's application in pharmacologic stress testing, including use with thallium imaging and echocardiography for patients unable to exercise.

Related Experiment Videos

  • Analysis of adenosine's side effect profile and pharmacokinetic properties, emphasizing its short half-life.

    • Main Results:

    • Adenosine effectively treats supraventricular tachycardia by inducing hyperpolarization via potassium channels.
    • Adenosine is a viable option for pharmacologic stress testing in patients with contraindications to exercise.
    • The drug exhibits a benign side effect profile, with adverse reactions often rendered clinically insignificant due to its rapid metabolism.

    Conclusions:

    • Adenosine is a valuable therapeutic agent for specific cardiac arrhythmias.
    • Its role is expanding into diagnostic cardiovascular imaging and stress testing.
    • Adenosine represents a significant addition to the cardiovascular pharmacopeia with a promising future.