Copyright © 1987 by the European Society of Cardiology.
© 1987 The European Society of Cardiology
Role of QT prolongation secondary to a postextrasystolic pause as a possible mechanism for the induction of ventricular fibrillation. Report of two cases
Division of Cardiology, University of Bari Bari, Italy
Received 4 August 1986; revised 2 December 1986; .
Dr Matteo Di Biase, Clinica Medica I, Cardiologia, Policlinico 70124 Bari, ItaLY
Two patients developed ventricular fibrillation (VF) while undergoing continuous electrocardiographic monitoring. Analysis showed that VF appeared only when a particular combination of circumstances occurred: a postextrasystolic pause. QT prolongation of the subsequent beat and a premature ventricular beat that did not have a short coupling interval. The relevance of this sequence as a trigger mechanism of VF is discussed.
Key Words: Holter monitoring; postextrasystolic pause; QT prolongation; ventricular fibrillation.