Also found in: Medical.
VVIRVentricular Rate Modulated Pacing (pacing heart failure fibrillation)
VVIRVoice and Visage of the Islamic Republic (Iranian Radio and Television)
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References in periodicals archive ?
Double blind crossover comparison of the effects of dual chamber (DDD) and ventricular rate adaptive (VVIR) pacing on neuroendocrine variables, exercise performance, and symptoms in complete heart block.
Since the patient had good intrinsic sinus rhythm at a rate of 55 bpm and potential complication risk during a subsequent lead revision, which was also refused by the patient, we reprogrammed the generator to VVIR mode that was well tolerated by the patient during follow-up.
Of 40 pacemakers 15 were programmed to VVIR, 11 DDDR, 7 DDD, and 7 VDDR modes.