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Table 4 Echo Doppler Measurements Before and After Optimization During Atrial Pacing Above Baseline Heart Rate

From: Shortening of atrioventricular delay at increased atrial paced heart rates improves diastolic filling and functional class in patients with biventricular pacing

Echo Doppler Variables

Before Optimization

After Optimization

P value

Diastolic filling time (ms)

279 ± 60

318 ± 43

< 0.001

Mitral inflow VTI (cm)

14.9 ± 5.7

15.8 ± 4.7

0.04

E wave (cm/s)

0.71 ± 0.30

0.72 ± 0.25

0.33

A wave (cm/s)

0.70 ± 0.29

0.64 ± 0.26

0.01

E/A

1.13 ± 0.51

1.27 ± 0.65

< 0.001

Systolic ejection time (ms)

276 ± 37

285 ± 38

0.011

LVOT VTI (cm)

14.7 ± 3.8

15.5 ± 3

.21

  1. Values are Mean ± SD. LVOT: left ventricular outflow tract; VTI: velocity time integral