Author + information
- Received October 8, 1985
- Revision received January 13, 1986
- Accepted January 31, 1986
- Published online June 1, 1986.
- Paul Touboul, MDa,
- Gilbert Kirkorian, MD,
- Georges Atallah, MD,
- Pierre Lavaud, MD,
- Pierre Moleur, MD,
- Michel Lamaud, MD and
- Marie P. Mathieu, MD
- ↵aAddress for reprints: Paul Touboul, MD, Hôpital Cardiovasculaire et Pneumologique Louis Pradel, BP Lyon Montchat, 69394 Lyon Cedex 03, France.
A 66 year old man presented with multiple episodes of tachycardia. Some had QRS complexes with a right bundle branch block configuration identical to those of sinus beats. The onset of the tachycardia was preceded by premature His bundle depolarizations. There was a His potential before each QRS complex of the tachycardia. Atrial activity was dissociated. Occasionally the appearance of sinus beats with a left bundle branch block pattern announced a tachycardia with an identical configuration and atrioventricular dissociation. His bundle activity occurred before the QRS complex and was followed by a right bundle branch deflection. A reentrant mechanism within the bundle branch system was invoked. One 200 J shock was delivered through an electrode catheter to the site of the right bundle branch. The postprocedure course was uneventful (follow-up 10 months).
- Received October 8, 1985.
- Revision received January 13, 1986.
- Accepted January 31, 1986.
- American College of Cardiology Foundation