Why the study?
Does a radiofrequency atrial pacemaker terminate attacks in a patient with refractory supraventricular reentry tachycardia?
Does a radiofrequency atrial pacemaker terminate attacks in a patient with refractory supraventricular reentry tachycardia?
A patient-activated radiofrequency atrial pacemaker was effective in promptly terminating attacks of refractory supraventricular reentry tachycardia.
May enable patient-terminated attacks in refractory reentrant SVT; hypothesis-generating and requires prospective validation before any clinical adoption.
The authors report on a case of drug-resistant supraventricular tachycardia with frequent and long-lasting paroxysmal attacks. Electrophysiologic study revealed that the supraventricular tachycardia was based on a reentry circuit. The attack was regularly induced by premature delay 340-400 ms atrial stimulation and it could always be terminated by rapid atrial stimulation within 1-2 seconds. Atrioventricular 2:1 block occurred with very rapid atrial stimulation of greater than 190/min. The patient received a radiofrequency atrial pacemaker, and at the first sign of a tachyarrhythmia he switched on the instrument for 1-2 sec, and the attack was promptly terminated.
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Solti et al. (1982) studied this question.
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