Table 3

Time Intervals of the Cardiac Cycle

BaselineDeactivatedReactivatedANOVA
Cardiac cycle, ms917 ± 100921 ± 53875 ± 1210.7755
IC, ms85 ± 36121 ± 4979 ± 390.0168
IC, % of cardiac cycle9 ± 413 ± 59 ± 40.006
Ejection, ms245 ± 80288 ± 42250 ± 230.7631
Ejection, % of cardiac cycle27 ± 1030 ± 729 ± 50.8017
IVR, ms167 ± 52138 ± 33168 ± 500.0079
IVR, % of cardiac cycle18 ± 514 ± 519 ± 40.0139
Diastolic filling time, ms318 ± 109320 ± 61283 ± 960.1869
Diastolic filling time, % of cardiac cycle34 ± 1035 ± 932 ± 70.1977

Boldface indicates significant p value.

Values are mean ± SD. Comparison between biventricular pacing at baseline, deactivated biventricular pacing, and reactivated biventricular pacing were performed by using repeated measures analysis of variance (ANOVA) with Greenhouse-Geisser and Huynh-Feldt adjustments for departures from sphericity (MedCalc for Windows, version 9.5.0.0, Mariakerke, Belgium).

Abbreviations as in Table 2.

  • p < 0.05 comparing the baseline with deactivated pacing (paired Student t test).

  • p < 0.05 comparing reactivated and deactivated (paired Student t test); ANOVA for repeated measurements.