Results
The mean maternal age was 33 years, and the mean maternal body mass index prior to pregnancy was 24.78 kg/m2. The GA ranged from 16.4 to 32.0 weeks (average 22.9 weeks). Averaged endoGLS value of the beginner was -18.57 % ± 6.59 percentage points (pp) for the right and -19.58 % ± 5.63 pp for the left ventricle, that of the expert -14.33 % ± 4.88 pp and -16.37 % ± 5.42 pp. With increasing GA, right ventricular endoGLS decreased slightly while the left ventricular were almost constant. The statistical analysis for endoGLS showed a Bland-Altman-Bias of -4.24 pp ± 8.06 pp for the right and -3.21 pp ± 7.11 pp for the left ventricle. The Bland-Altman-Bias of the ED in both ventricles in all analyzed segments ranged from -0.49 mm ± 1.54 mm to -0.10 mm ± 1.28 mm, that for FS from -0.33 pp ± 11.82 pp to 3.91 pp ± 15.56 pp and that for SI from -0.38 ± 0.68 to -0.15 ± 0.45.