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Table 2 The morphological and functional changes in the left ventricle in pregnant women

From: Quantitative evaluation of longitudinal strain in layer-specific myocardium during normal pregnancy in China

Variable Controls Trimester 1 Trimester 2 Trimester 3 Postpartum
- (13.6 ± 2.2)wk (24.8 ± 3.4)wk (38.1 ± 2.6)wk (7.4 ± 2.4)wk
LVEDd (mm) 44.18 ± 2.50 45.28 ± 2.83 46.88 ± 3.40 48.84 ± 3.26* 46.31 ± 3.14
LVEDs (mm) 28.08 ± 2.84 28.24 ± 3.21 29.62 ± 2.91 30.46 ± 2.81* 28.72 ± 2.51
RWT 0.25 ± 0.09 0.27 ± 0.07 0.28 ± 0.05 0.29 ± 0.06* 0.26 ± 0.06
LVMi (g/m2) 59.25 ± 18.00 62.57 ± 24.81 66.37 ± 16.74 71.23 ± 14.46* 63.14 ± 16.08
Sphericity index 0.27 ± 0.04 0.31 ± 0.07* 0.32 ± 0.05*§ 0.32 ± 0.06* 0.28 ± 0.06
LVEDV(ml) 76.14 ± 21.20 81.39 ± 19.54 83.78 ± 14.58 87.72 ± 17.18* 82.77 ± 16.85
LVESV(ml) 32.00 ± 7.29 33.91 ± 6.16 36.30 ± 7.96* 39.67 ± 7.98* 34.08 ± 8.32
LVEDV index (ml/m2) 44.06 ± 17.44 41.93 ± 18.61 49.33 ± 14.49 51.67 ± 12.65* 46.63 ± 16.49
EF (%) 67.57 ± 5.12 68.00 ± 5.21 65.46 ± 4.49 64.98 ± 3.93* 66.89 ± 4.91
Sm (cm/min) 7.01 ± 1.63 7.06 ± 1.24 6.82 ± 1.03 6.47 ± 1.21* 6.93 ± 1.72
E/Em 8.33 ± 1.07 11.56 ± 2.08* 12.46 ± 3.18* 13.34 ± 4.33* 9.04 ± 4.05
  1. Data are given as mean ± SD, LVEDd indicates left ventricular end-diastolic dimension
  2. LVEDs left ventricular end-systolic dimension, RWT relative wall thickness, LVMi left ventricular mass index, LVEDV indicates left ventricular end-diastolic volume, LVESV left ventricular end-systolic volume, EF ejection fraction, Sm average of peak systolic velocities, E peak early diastole transmitral wave velocity, Em average of peak early diastolic velocities
  3. *P < 0.05 vs. Controls; P < 0.05 vs. Trimester 1; P < 0.05 vs. Trimester 3;§P < 0.05 vs. Postpartum