Reversible protective effect of propafenone or flecainide during atrial fibrillation in patients with an accessory atrioventricular connection

Pseudo myocardial infarction and pseudo ventricular hypertrophy ECG patterns in Wolff-Parkinson-White syndrome

In Wolff-Parkinson-White (WPW) syndrome, the ventricles are pre-excited through an accessory conduction pathway, bundle of Kent, which directly connects atria with ventricles bypassing the atrioventricular node. The altered sequence of ventricular activation secondary to presence of the bundle of Kent may cause pseudo myocardial infarction and pseudo ventricular hypertrophy patterns on electrocardiogram. The morphology of these pseudo electrocardiographic patterns depends on the anatomical location of the bundle of Kent around the circumference of the atrioventricular ring. Electrocardiograms of the WPW syndrome displaying morphology of different pseudo patterns are presented and the mechanisms causing pseudo patterns are reviewed.

Conversion of atrial fibrillation with ajmaline in a pregnant woman with Wolff-Parkinson-White syndrome

Pregnancy is related to an increased frequency of arrhythmias in asymptomatic patients with Wolff-Parkinson-White syndrome, which might lead to sudden death. A 40-year-old woman, with Wolff-Parkinson-White syndrome which was not diagnosed until pregnancy, presented in the 34th week with an atrial fibrillation, with high risk criteria for ventricular fibrillation. Intravenous ajmaline was given to convert the tachyarrhythmia to sinus rhythm. We obtained an excellent maternal control with no maternal or fetal adverse effects.