June 1, 1980Circulation
Epicardial and endocardial activation during sustained ventricular tachycardia in man.
Why the study?
Where does ventricular activation originate during sustained ventricular tachycardia in patients with ischemic heart disease?
Population
21 patients with coronary artery disease and previous myocardial infarction who underwent operation for…
Design
Case_series
Authors
Discussion
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Member takes
Implication
Supports endocardial mapping priority in ischemic VT; leaves open epicardial role pending larger studies.
Structured PICO
Where does ventricular activation originate during sustained ventricular tachycardia in patients with ischemic heart disease?
P
Population
21 patients with coronary artery disease and previous myocardial infarction who underwent operation for recurrent ventricular tachycardia
I
Intervention
Intraoperative epicardial and endocardial mapping (55-75 epicardial sites and 28-55 left ventricular endocardial sites)
O
Outcome
Site and timing of earliest ventricular activation during sustained ventricular tachycardiasurrogate
Ventricular tachycardia associated with ischemic heart disease originates near the endocardial surface of the left ventricle, demonstrating that epicardial mapping alone is insufficient to identify the site of origin.
Cite This Study
Horowitz et al. (1980) studied this question.