Warren Paul W, Powell Adam W, Knilans Timothy, Connor Chad, Baskar Shankar
The Heart Institute, Cincinnati Children's Hospital Medical Center, 3333 Burnett Ave., MLC 2003, Cincinnati, OH, 45229-3026, USA.
Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
Pediatr Cardiol. 2025 Feb;46(2):499-503. doi: 10.1007/s00246-024-03506-9. Epub 2024 May 6.
Double ventricular response (DVR), where a single P wave results in two QRS complexes, is a rare presentation of dual AV node physiology. It has been associated with ventricular dysfunction in the setting of incessant tachycardia. We present the case of an otherwise healthy adolescent who had frequent DVR without tachycardia leading to left ventricular dysfunction. Slow pathway modification led to a significant reduction in ectopy and normalization of ventricular function. This highlights that DVR without tachycardia might lead to ventricular dysfunction in pediatric patients. Slow pathway modification with reduction of ectopy may be sufficient to restore ventricular function.
双心室反应（DVR），即单个P波产生两个QRS波群，是双房室结生理的一种罕见表现。它与持续性心动过速情况下的心室功能障碍有关。我们报告了一例原本健康的青少年病例，该患者频繁出现无心动过速的DVR，导致左心室功能障碍。慢径路改良导致异位搏动显著减少，心室功能恢复正常。这突出表明，无心动过速的DVR可能导致儿科患者出现心室功能障碍。减少异位搏动的慢径路改良可能足以恢复心室功能。
