Abstract
Sixteen patients 7-21 years old with ventricular extrasystoles (PVC) on previous EKG underwent graded exercise (GMX) and 24 hr. ambulatory monitoring (AM). GMX and AM were performed within 4 weeks in 12 and 3 months in 2 pts. Three pts had had surgery for tetralogy of Fallot (TOF) and 3 pts for ventricular septal defect (VSD), one pt had QT prolongation, one hypertrophic cardiomyopathy, and one had recovered from acute myocarditis. Seven pts had idiopathic PVC (IPVC). Just prior to GMX, 8 pts (I) had single unifocal PVC (UPVC), one (II) paired PVC (PPVC), one (III) a brief run of ventricular tachycardia (VT), one (IV) multifocal PVC (MPVC), and 5 (V) no PVC (including one TOF and one VSD). One pt in group I (IPVC) showed no change in PVC with GMX, and one pt in group V (VSD) developed UPVC post GMX. The pt with VSD (III) developed sustained VT post GMX. GMX suppressed PVC in the remainder. In all cases, AM confirmed the ventricular arrhythmia present during graded exercise. In addition, in the pt with PPVC, AM also documented an episode of ventricular tachycardia.
The results indicate that ambulatory monitoring is as effective as, and may be superior to, graded exercise testing in the evaluation of ventricular dysrhythmias in children.
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Sanchez, G., O'Riordan, A., Conner, R. et al. 188 THE USE OF GRADED EXERCISE AND AMBULATORY MONITORING IN TIME EVALUATION OF VENTRICULAR DYSRHYTHMIAS IN CHILDREN. Pediatr Res 15 (Suppl 4), 471 (1981). https://doi.org/10.1203/00006450-198104001-00197
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DOI: https://doi.org/10.1203/00006450-198104001-00197
