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《ACADEMIC JOURNAL OF SUN YAT-SEN UNIVERSITY OF MEDICAL SCIENCES》 1997-01
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CHANGES OF THE PARAMETERS OF HEART AND BLOOD VESSEL DURING SECOND AND THIRD TRIMESTERS OF PREGNANCY

Mo Eqing Zhang Xiuquan Zhang Xichun (Department of Obstetrics and Gynecology, Third Affiliated Hospital, Sun Yat sen University of Medical Sciences, Guangzhou, 510630)  
The TP CBS nonstress parameter detecting instument for heart and blood vessel was used to examine 300 women at the second and third trimesters of pregnancy. The observations included sytolic pressure(Ps), diastolic pressure (Pa), difference pressure(Dp), mean arterial pressure (MAP), heart rate(HR), stroke volume(SV), cardiac output(CO), stroke volume index(SI), cardiac output index(CI), total peripheral resistance(TPR), arterial compliance(AC), coefficent of sphygmogram(K), blood viscosity(V). It was found that the maternal cardio vacular system exhibted a series of accommodative physiologic changes. With the advancement of pregnancy, the diastolic pressure, mean arterial pressure, cardiac output, heart rate and arterial compliance all showed significant increase. On the contrary, there is a marked lowering of the total peripheral resistance. These changes were closely related to the establishment of placenta circulation, the increase of maternal blood volume and cardiac load.
【CateGory Index】: R714.12
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【Co-references】
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1 Wang Shuyu, Lan Yonglian, Lv Wei, et al(Department of Genetics, Beijing Gynecology and Obstetric Hospital, Beijing 100006);The impact of age, gestational age, bady weight, smoking and the number of previous births on the levels of AFP and β-HCG in maternal serum in Down's screening[J];Beijing Medical Journal;2006-01
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