[Changes of cardiac function and hemodynamics in peripartum period].

Doppler's echocardiography was used to measure the changes of cardiac function and hemodynamics in peripartum period of 30 healthy women. The results showed that heart rate, body weight, body surface area, left ventricular mass (LVM), stroke volume (SV), cardiac output (CO), ejection fraction (EF), fractional shortening (delta D%), diastolic dimension (Dd), end-diastolic volume (EDV) and A/E ratio were significantly lowered within the first few postpartum days. However, the mean blood pressure (MBP) and systemic vascular resistance (SVR) were markedly increased (P < 0.01) in contrast to that of antepartum. Aorta diastolic dimension (AODd), aorta systolic dimension (AODs), maximum velocity (Vmax) and velocity time integral (VTI) were significantly different between before and after delivery. It may result from eliminated weight load, decreased blood volume load, and low circulating estrogen and progestogen levels and reduced physiological effects. It showed a great adaptability of cardiovascular system in healthy women to physiological load.