Why the study?
Does surface ECG accurately distinguish SVT with aberrant conduction from VT compared to invasive EP study?
Population
133 wide QRS tachycardias recorded in patients undergoing invasive electrophysiological (EP) study
Comparison
Surface ECG leads using pooled morphological… vs Invasive electrophysiological recordings
Design
Cross-sectional
Authors
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ECG limitations in 10% of tachycardias warrant EP confirmation in ambiguous cases; challenges MCL1 as V1 substitute and leaves open refined algorithms.
Does surface ECG accurately distinguish SVT with aberrant conduction from VT compared to invasive EP study?
While 12-lead ECG is valuable for distinguishing SVT with aberrancy from VT, about 10% of cases defy differentiation and MCL1 cannot substitute for V1.
Drew et al. (1995) studied this question.
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