Key result
Rapid atrial pacing demonstrated entrainment without interruption during reciprocating tachycardia in a patient with Wolff-Parkinson-White syndrome, supporting macro reentry as the mechanism.
Case Report (n=1)
No
This case report demonstrates the 'entrainment without interruption' phenomenon during reciprocating tachycardia in WPW syndrome, supporting macro reentry as the underlying mechanism.
Single-case entrainment supports macroreentry in WPW tachycardia; leaves open generalizability beyond this patient.
In a case with the Wolff-Parkinson-White syndrome, the phenomenon "entrainment without interruption" was observed during spontaneous tachycardia. Electrophysiologic study revealed that the tachycardia was due to reentry with the antegrade limb being the AV node-His axis and the retrograde limb being the accessory pathway. This report is the second report showing "entrainment" phenomenon which is consistent with macro reentry as the mechanism of tachycardia as shown in atrial flutter.
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Inoue et al. (1982) conducted a case report in Wolff-Parkinson-White syndrome with reciprocating tachycardia (n=1). Rapid atrial pacing was evaluated on Observation of entrainment and termination of tachycardia. Rapid atrial pacing demonstrated entrainment without interruption during reciprocating tachycardia in a patient with Wolff-Parkinson-White syndrome, supporting macro reentry as the mechanism.
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