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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