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Related Experiment Videos

Paroxysmal reciprocating sinus tachycardia.

P V Curry, T R Evans, D M Krikler

    European Journal of Cardiology
    |October 1, 1977
    PubMed
    Summary
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    Paroxysmal reciprocating sinus tachycardia (PRST) can be initiated and terminated by atrial premature beats. Underlying conditions like sinus node disease or Wolff-Parkinson-White syndrome were noted in patients with PRST.

    Area of Science:

    • Cardiology
    • Electrophysiology
    • Cardiac Arrhythmias

    Background:

    • Paroxysmal reciprocating sinus tachycardia (PRST) is a rare arrhythmia.
    • Understanding its initiation and termination mechanisms is crucial for patient management.

    Purpose of the Study:

    • To present clinical and electrophysiological data on patients with PRST.
    • To elucidate the mechanisms of PRST initiation and termination.

    Main Methods:

    • Clinical data collection and electrophysiological studies were performed on 9 patients.
    • Atrial premature beats and pacing were used to induce and terminate tachycardia.
    • Verapamil and atropine were administered to assess their effects.

    Main Results:

    Related Experiment Videos

    • PRST could be initiated in all patients and terminated in 4 by atrial premature beats.
    • Underlying conditions included sinus node disease (5 patients), cardiac ischemia/hypertension (3 patients), and Wolff-Parkinson-White syndrome (1 patient).
    • Verapamil suppressed PRST in 5 patients; atropine facilitated initiation in 3.

    Conclusions:

    • PRST can be reliably induced and terminated using programmed atrial stimulation.
    • PRST may coexist with other cardiac conditions and arrhythmias, including AV reentry tachycardias in WPW syndrome.
    • Pharmacological agents like verapamil and atropine can modulate PRST.