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Triggered activity was shown to be the likely mechanism of recurrent tachycardia in a 28 year old Vietnamese man. During baseline electrophysiological testing the tachycardia was induced consistently by prolonged atrial or ventricular pacing but not by premature extrastimuli. Moreover, the tachycardia coupling intervals varied directly with the cycle length of the initiating drive. Procainamide and propranolol did not suppress tachycardia, but verapamil terminated it and prevented its reinitiation. The origin of the tachycardia was localised to the left ventricular inferoapical segment and four direct current countershocks of 200 J each delivered via an electrode catheter abolished the tachycardia. During 12 months of follow up the patient was not treated with antiarrhythmic agents and the tachycardia did not recur.
A K Bhandari, and
R A Hong, and
S H Rahimtoola
June 2021,
The American journal of emergency medicine,
A K Bhandari, and
R A Hong, and
S H Rahimtoola
October 1986,
Polski tygodnik lekarski (Warsaw, Poland : 1960),
A K Bhandari, and
R A Hong, and
S H Rahimtoola
December 1986,
American heart journal,
A K Bhandari, and
R A Hong, and
S H Rahimtoola
April 1978,
Circulation,
A K Bhandari, and
R A Hong, and
S H Rahimtoola
March 1992,
International journal of cardiology,
A K Bhandari, and
R A Hong, and
S H Rahimtoola
March 1994,
Pacing and clinical electrophysiology : PACE,
A K Bhandari, and
R A Hong, and
S H Rahimtoola
November 1991,
Pacing and clinical electrophysiology : PACE,
A K Bhandari, and
R A Hong, and
S H Rahimtoola
March 1997,
European heart journal,
A K Bhandari, and
R A Hong, and
S H Rahimtoola
August 1996,
Cardiologia (Rome, Italy),
A K Bhandari, and
R A Hong, and
S H Rahimtoola
March 2009,
Journal of cardiovascular electrophysiology,
