Spontaneous compared with induced onset of sustained ventricular tachycardia.
Why the study?
Does the mode of initiation differ between spontaneous and induced sustained ventricular tachycardia in patients with VT?
Population
16 patients with 16 episodes of spontaneously occurring sustained ventricular tachycardia recorded by…
Comparison
Spontaneous onset of sustained ventricular… vs Ventricular tachycardia induced by programmed…
Design
Cohort
Authors
Discussion
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Member takes
Implication
Major differences in VT initiation modes warrant caution extrapolating EP findings to spontaneous events; hypothesis-generating for concealed decremental conduction.
Structured PICO
Does the mode of initiation differ between spontaneous and induced sustained ventricular tachycardia in patients with VT?
P
Population
16 patients with 16 episodes of spontaneously occurring sustained ventricular tachycardia recorded by two-channel ambulatory electrocardiographic monitoring
I
Intervention
Spontaneous onset of sustained ventricular tachycardia
C
Comparator
Ventricular tachycardia induced by programmed electrical stimulation
O
Outcome
Electrophysiological characteristics of the modes of initiation (timing and number of ventricular premature depolarizations)surrogate
There are major differences in the timing and number of ventricular premature depolarizations initiating spontaneous versus induced sustained ventricular tachycardia, suggesting concealed decremental slow conduction is critical for spontaneous initiation.
Cite This Study
Berger et al. (1988) studied this question.