论文部分内容阅读
本文采用心阻抗图法测定377例正常健康孕妇的心功能。结果表明:心输出量(CO)和心脏前负荷在妊娠各期均增加,以孕早期最明显(LVEDV增加34.4％,LVEDP增加42.4％)。每搏输出量(SV)仅于孕早期增加46.7％。心脏后负荷于妊娠各期均降低(TPR下降20.2％～11.6％)。于妊娠中、晚期心率明显增快(36.8％,29.7％)。表明CO增加在孕早期主要与SV增加有关,孕中、晚期与心率增快有关。于孕中、晚期PEP/LVET比值增大至>0.35(0.49,0.39),表明心肌收缩功能下降,提示临床对异常分娩者要注意监测心功能,以防心血管并发症。
In this paper, cardiac impedance was used to determine the cardiac function of 377 healthy pregnant women. The results showed that both cardiac output (CO) and pre-cardiac load increased during pregnancy and were most evident in early pregnancy (LVEDV increased 34.4% and LVEDP increased 42.4%). Stroke volume (SV) increased only 46.7% in early pregnancy. Cardiac load decreased during pregnancy (TPR decreased 20.2% ~ 11.6%). In pregnancy, late heart rate was significantly faster (36.8%, 29.7%). Show that the increase of CO is mainly related to the increase of SV in the first trimester of pregnancy, and the increase of heart rate in the second and third trimester of pregnancy. In pregnant, late PEP / LVET ratio increased to> 0.35 (0.49,0.39), indicating decreased myocardial systolic function, suggesting that clinical abnormal abortion should pay attention to monitoring heart function, to prevent cardiovascular complications.