Table 3.
Three-layer longitudinal strain evolution during pregnancy
| Controls | Trimester 1 | Trimester 2 | Trimester 3 | Postpartum | |
|---|---|---|---|---|---|
| (13.6 ± 2.2)wk | (24.8 ± 4.4)wk | (38.1 ± 2.6)wk | (7.4 ± 2.4)mo | ||
| GLS-endo (%) | 24.32 ± 4.11 | 24.10 ± 2.78 | 23.97 ± 2.98‡ | 21.40 ± 3.07*† | 24.02 ± 3.17‡ |
| GLS-mid (%) | 21.15 ± 2.90 | 20.98 ± 3.20 | 21.03 ± 3.21‡ | 18.34 ± 2.76*† | 21.18 ± 2.26‡ |
| GLS-epi (%) | 18.96 ± 2.84 | 19.01 ± 3.33 | 18.61 ± 2.83‡ | 16.09 ± 2.57*† | 19.12 ± 3.33‡ |
| Avg.GLS (%) | 20.34 ± 2.97 | 21.09 ± 3.15 | 21.21 ± 2.60‡ | 18.62 ± 2.81*† | 20.95 ± 3.06‡ |
Data are given as mean ± SD in absolute values. GLS indicates the global longitudinal strain; GLS-endo, the average value of global longitudinal strain in the endocardial layer at the basal, mid-ventricular and apical levels; GLS-mid, the average value of global longitudinal strain in the mid-myocardial layer at the basal, mid-ventricular and apical levels; GLS-epi, the average value of global longitudinal strain in the epicardial layer at the basal, mid-ventricular and apical levels
*P < 0.05 vs. Controls; † P < 0.05 vs. Trimester 1; ‡ P < 0.05 vs. Trimester 3; § P < 0.05 vs. Postpartum