Why the study?
Does left ventricular electrical delay (QLV interval) predict the acute hemodynamic response to CRT in patients undergoing biventricular ICD placement?
Population
31 patients undergoing biventricular ICD placement
Comparison
Biventricular or LV only pacing with atrial… vs Intrinsic rhythm
Design
Cohort, 5 different AV delays tested in randomized order
Follow-up
acute (at implant)
Authors
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QLV may inform acute CRT optimization; hypothesis-generating and requires prospective validation before guiding practice.
Does left ventricular electrical delay (QLV interval) predict the acute hemodynamic response to CRT in patients undergoing biventricular ICD placement?
Left ventricular electrical delay (QLV interval) is a strong, independent predictor of the acute hemodynamic response to cardiac resynchronization therapy.
Gold et al. (2014) studied this question.
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