Table 4. Changes in the left and right ventricular and atrial dimensions in systole and diastole in normal pregnancy among the study participants.

LVPWd (cm): left ventricular posterior wall in diastole, LAD (cm): left atrial diameter, LVPWs: left ventricular posterior wall in systole, LVIDs: left ventricular internal diameter in systole, LVIDd: left ventricular internal diameter in diastole, LAVs: left atrial volume in systole, LAVI: left atrial volume index, RVD1 (cm): right ventricular basal diameter (basal diameter), RAD (cm): right atrial diameter, RAV (cm): right atrial volume, CI: confidence interval

Cardiac parameters	Second versus first trimester		p-value	Third versus first trimester		p-value
	Mean difference (95%CI)	Paired t-test		Mean difference (95%CI)	Paired t-test
LVPWd (cm)	0.01 (-0.03, 0.06)	0.61	0.548	0.08 (0.01, 0.15)	2.18	0.034
LAD (cm)	0.23 (0.17, 0.40)	9.92	0.001	0.33 (0.16, 0.79)	16.05	0.001
LVPWs (cm)	0.02 (-0.14, 0.09)	0.41	0.687	0.06 (-0.20, 0.08)	0.88	0.384
LVIDs (cm)	0.06 (-0.34, 0.22)	0.44	0.663	0.77 (0.58, 0.96)	8.08	0.001
LVIDd (cm)	0.52 (0.39, 0.64)	8.41	0.001	1.23 (1.08, 1.38)	16.65	0.001
LAVs (mL)	6.00 (4.24, 7.76)	6.86	0.001	8.20 (6.20, 10.21)	8.27	0.001
LAVI (mL/m2)	-1.05 (-1.79, -0.031)	-2.86	0.007	-0.46 (-1.19, 2.12)	0.57	0.575
RVD1 (cm)	0.17 (0.11, 0.24)	5.40	0.001	0.36 (0.28, 0.43)	9.44	0.001
RAD (cm)	0.27 (0.21, 0.33)	9.23	0.001	0.25 (0.23, 0.27)	5.70	0.001
RAV (mL)	3.14 (0.73, 5.55)	2.68	0.013	3.72 (2.34, 9.92)	2.73	0.001