Mechanical stimulation during right ventricular catheter withdrawal can transiently simulate Wolff-Parkinson-White syndrome ECG patterns, supporting a physiologic mechanism for anomalous AV excitation.
Warrants caution interpreting short-PR/aberrant-QRS electrograms during RV catheter withdrawal; supports physiologic mechanism and leaves anatomic explanations open.
During the withdrawal of a catheter-electrode through the right ventricle of 2 normal subjects the electrogram displayed briefly a short P-R interval and an aberrant QRS. In the simultaneously recorded standard lead, the phenomenon simulated what is seen in the Wolff-Parkinson-White syndrome. The findings are presented in support of the physiologic, rather than anatomic, explanation for anomalous atrioventricular excitation.
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Kossmann et al. (1950) studied this question.
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