Triggered activity as arrhythmogenic mechanism after myocardial infarction: clinical and electrophysiologic study of one case.
In a woman with an old infarction and sustained ventricular tachycardia, tachycardias were only inducible after short-long RR sequences. After isoprenaline, tachycardias became incessant and all were preceded by short-long RR sequences. This strongly suggests that triggered activity plays a role in initiation of ventricular tachycardias in postinfarction patients.
Wiesfeld
A C
AC
Department of Cardiology, University Hospital Groningen, The Netherlands.
Crijns
H J
HJ
Van Veldhuisen
D J
DJ
Van Gilst
W H
WH
Lie
K I
KI
D000368:Aged; D002304:Cardiac Pacing, Artificial; D004558:Electric Stimulation; D004562:Electrocardiography; D005080:Exercise Test; D005260:Female; D006801:Humans; D007545:Isoproterenol / Q000494:pharmacology; D009203:Myocardial Infarction / Q000150:complications*; D017180:Tachycardia, Ventricular / Q000209:etiology* / Q000503:physiopathology
D007545:Isoproterenol