Electrophysiologic studies were prospectively performed in 91 consecutive @entity1 referred for evaluation of sustained @entity1165 or @entity1164 . Fifty-two @entity1 had a history of sustained @entity1165 and 39 @entity1 had a history of @entity1164 . The identical stimulation protocol was used in all @entity1 . The stepwise protocol involved @entity955 , burst ventricular pacing, single, double, and triple extrastimuli during ventricular pacing. Stimulation was performed at the right ventricular apex at two and five times diastolic threshold. Using this protocol, @entity1165 was inducible in 48 (92%) of the 52 @entity1 with a history of sustained @entity1165 and in 28 (72%) of 39 @entity1 with a history of @entity1164 (p less than 0.02). The use of a third extrastimulus increased the yield of inducible @entity1165 by 37% in @entity1 with a history of sustained @entity1165 and by 25% in @entity1 with a history of @entity1164 . Stimulation at five times diastolic threshold and stimulation from the right ventricular outflow tract added a 15% increment in overall yield of inducible @entity1165 in @entity1 with a history of sustained @entity1165 , and a 26% increment in yield in @entity1 with a history of @entity1164 . Forty-four (92%) of the 48 inducible @entity1 in the sustained @entity1165 group had inducible monomorphic @entity1165 as compared to 19 (68%) of 28 @entity1 in the @entity1164 group (p less than 0.02).(ABSTRACT TRUNCATED AT 250 WORDS)

Mode of stimulation versus response: validation of a protocol for induction of XXXX .

@entity1 :: ('9606', 'Species') :: ['patients'] @entity1165 :: ('MESH:D017180', 'Disease') :: ['ventricular tachycardia'] @entity955 :: ('MESH:D001281', 'Disease') :: ['atrial pacing'] @entity1164 :: ('MESH:D016757', 'Disease') :: ['sudden cardiac death']
@entity1165 :: (MESH:D017180,Disease) :: ['ventricular tachycardia']
