[Demonstration of a major preexcitation syndrome during treatment of auricular flutter using intravenous injection of verapamil].

Abstract

Electrophysiologic properties of various conduction pathways responsible for preexcitation syndrome are illdefined; they explain the incidence of arrhythmias : supraventricular tachycardia, atrial fibrillation and, in much rarer cases, flutter. The site of Verapamil activity is chiefly the atrioventricular junction, while its action on the refractory period of atrio-ventricular bypass is small and unforeseable. In a patient with type B. W.P.W. syndrome, complicated with atrial flutter Verapamil induced a preferential stimulation through the anomalous pathway. Right BBB which was obvious during the attack of atrial flutter, was hidden by the type B W.P.W. syndrome, the right branch being shunted by the anomalous pathway. The infrequency of atrial flutter in type B W.P.W. syndrome is emphasized.

• Authors: J M Chaudron, E Lebacq
• Journal: Acta cardiologica (Acta Cardiol) Vol. 30 Issue 2 Pg. 137-50 ( 1975) ISSN: 0001-5385 [Print] England
• Vernacular Title: Mise en evidence d'un syndrome de preexcitation majeure lors du traitement d'un flutter auriculaire par injection i.v. de verapamil
• PMID: 1079999 (Publication Type: English Abstract, Journal Article)

Chemical References

• Verapamil

Topics

• Adult
• Atrial Flutter (complications, drug therapy)
• Electrocardiography
• Humans
• Male
• Verapamil (therapeutic use)
• Wolff-Parkinson-White Syndrome (complications, diagnosis, drug therapy)