PubMed · 14503433
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Mary G Adams, Michele M Pelter. 2003. Ventricular escape rhythms.. https://pubmed.ncbi.nlm.nih.gov/14503433/
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UNLABELLED: Accelerated ventricular rhythm (AVR) was observed in two newborn infants. In the first case, arrhythmia was noted during the foetal period. Both neonates were asymptomatic and had no evidence of cardiac disease. The arrhythmia eventually disappeared when the infants were 4 mo and 24 d old, respectively. AVR in the neonatal period is reviewed in this report and recent information regarding appropriate diagnostic evaluation, differentiation from ventricular tachycardia and treatment is outlined. CONCLUSION: Accelerated ventricular rhythm is a benign and self-limited arrhythmia in the neonatal period. However, it is important to differentiate it from other serious rhythm disorders, mainly ventricular tachycardia, in order to avoid unnecessary and potentially harmful treatment and to relieve parental anxiety.
Accelerated idioventricular rhythm (AIVR) is a ventricular arrhythmia, most commonly seen in adults with underlying cardiac disease. Few cases of AIVR have been reported in the adult population in the absence of cardiac pathology. We describe a case of a healthy teenager who developed episodes of AIVR postoperatively. Extensive evaluation with echocardiogram, cardiac MRI, exercise stress test, and Holter monitoring did not reveal any gross abnormalities except for mitral valve prolapse. Our patient was asymptomatic at all times and did not have any serious cardiac problems.