Key result
Comparing sinus rhythm and tachycardia ECGs in a 66-year-old man with intermittent palpitations established the diagnosis of WPW syndrome with orthodromic AVRT.
Case Report (n=1)
This case highlights the diagnostic importance of comparing baseline sinus rhythm ECGs with tachycardia ECGs to identify mechanisms like orthodromic AVRT in patients with pre-existing bundle branch blocks.
May aid ECG diagnosis in bundle branch block tachycardias; single case leaves generalizability open.
A 66-year-old man with 5-year intermittent palpitation underwent an electrophysiologic (EP) study. Electrocardiograms (ECGs) on admission showed sinus rhythm with right bundle branch block (RBBB). During palpitation, regular tachycardia with RBBB occurred. Through detailed analysis, the diagnosis of Wolff-Parkinson-White (WPW) syndrome with orthodromic atrio-ventricular reentry tachycardia (AVRT) was established. The case emphasizes the significance of comparing sinus rhythm and tachycardia ECGs for accurate diagnosis.
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Luo et al. (2025) conducted a case report in Wolff-Parkinson-White (WPW) syndrome with orthodromic atrio-ventricular reentry tachycardia (AVRT) (n=1). Electrophysiologic (EP) study and ECG comparison was evaluated on Diagnosis of Wolff-Parkinson-White (WPW) syndrome with orthodromic atrio-ventricular reentry tachycardia (AVRT). Comparing sinus rhythm and tachycardia ECGs in a 66-year-old man with intermittent palpitations established the diagnosis of WPW syndrome with orthodromic AVRT.
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