Table I.

Hemodynamic and echocardiographic parameters.

Parameter	Pregnancy groupa	Control groupa	P-value
Systolic blood pressure, mmHg	115±10	120±11	0.16
Diastolic blood pressure, mmHg	70.6±7	74.5±6	0.049b
Heart rate, beats per minute	87.7±11.6	76.6±16	0.0003d
Ejection fraction, %	62.2±4.7	65.9±3.6	0.0015c
Left ventricular diameter at end-diastole, mm	45.9±3.6	43.9±5.1	0.14
Interventricular septum thickness at end-diastole, mm	8.7±1.4	7.9±1.1	0.028b
Left ventricular posterior wall thickness at end-diastole, mm	8.6±1.2	7.7±0.9	0.005c
E/A	1.37±0.32	1.6±0.34	0.0084c
E/E'med	5.86±2.5	6.17±1.1	0.19
E/E'lat	5.02±1.9	4.82±1.2	0.94
Ao Vmax, m/s	1.42±0.19	1.22±0.09	<0.0001d

^aMean ± standard deviation.

^bP<0.05,

^cP<0.01,

^dP<0.001. E/A, peak velocity of early diastolic transmitral flow to late transmitral flow; E/E'med, peak velocity of early diastolic transmitral flow to peak velocity of early diastolic mitral annular motion at the septal side; E/E'lat, peak velocity of early diastolic transmitral flow to peak velocity of early diastolic mitral annular motion at the lateral side; Ao Vmax, peak aortic velocity.