|Mean Difference||95% Confidence Interval||p Value|
|Change in AHR (%)||4.23||0.52 to 7.93||0.025|
|QLV (ms)||−5.92||−18.45 to 6.60||0.354|
|Stimulation-QRS duration (ms)||−3.70||−6.50 to 0.88||0.010|
|Paced QRS duration (ms)||−25.45||−33.59 to −17.32||<0.001|
Mixed effect model for all data points achieving capture comparing epicardial and endocardial pacing across the dependent variables as shown. A total of 32 epicardial and 87 endocardial data points were compared across 8 patients.
AHR = acute hemodynamic response; QLV = first ventricular depolarization (earliest onset QRS duration on surface 12 lead electrocardiogram) to the nadir signal on the LV lead electrogram.