When multiple pregnancy blood pressure aboveand total peripheral resistance vessels below. At the time of birth is increasing systolic and diastolic blood pressure.

Changes in heart rate. For normal pregnancy is characterized by fizilogicheskaya tachycardia. In a normal heart rate of 60 - 80 beats per minute. When Pregnancy 80-95 beats per minute (with bodrostvovanii or sleep). When multiple pregnancy heart rate increases by 20 beats per minute. CVP (central venous pressure) significantly increased in the third trimester. Normally, 2-5 cm water station, pregnancy of 10-12 cm, osobennos in veins of the lower Conen as compressed lower hollow Vienna pregnant uterus and impeded outflow veins of the lower konechnotey. Expansion of these veins svyaano also features klappannogo apparatus veins in women.

Inferior vena cava syndrome - occurs when a horizontal position (compression uterus of the inferior vena cava) - there is a faint, blood pressure dropsthere is noise in ears, dizziness,and all these effects disappear when the change of position). MoE (cardiac output) increases from 10 weeks,maximum up to 20 weeks and is 6-7 l / minat a rate of 1-1.5 l / min. Birth decreases and comes to the norm.