The cardiac output changes in various positions in pregnancy

Vorys, Nichols; Ullery, John C.; Hanusek, Gordon E.

doi:10.1016/s0002-9378(16)36259-7

Cited by 58 publications

(16 citation statements)

References 10 publications

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“…38 Compared with measurements in late pregnancy in the left lateral recumbent position, cardiac output is lowered by ≈14% in the supine position and by ≈30% in lithotomy. 39 In fact, ≈8% of gravidas become hypotensive in later pregnancy when in the supine position, with pallor, nausea, and dizziness. The hemodynamic effects vary widely, with the fall in arterial pressure ranging from mild to severe.…”

Section: Cardiac Outputmentioning

confidence: 99%

“…Third Trimester (28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40)(41)(42) Weeks) The frequency of cardiac evaluation in late pregnancy must be individualized. Once the peak hemodynamic load of pregnancy is reached, normal symptoms of pregnancy (edema, dyspnea on exertion) may worsen, so patients must be monitored closely to distinguish such symptoms and signs of normal pregnancy from those that may reflect hemodynamic compromise.…”

Section: Second Trimester (14-28 Weeks)mentioning

confidence: 99%

See 1 more Smart Citation

Management of Pregnancy in Patients With Complex Congenital Heart Disease: A Scientific Statement for Healthcare Professionals From the American Heart Association

Canobbio¹,

Warnes²,

Aboulhosn³

et al. 2017

Circulation

341

303

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Today, most female children born with congenital heart disease will reach childbearing age. For many women with complex congenital heart disease, carrying a pregnancy carries a moderate to high risk for both the mother and her fetus. Many such women, however, do not have access to adult congenital heart disease tertiary centers with experienced reproductive programs. Therefore, it is important that all practitioners who will be managing these women have current information not only on preconception counseling and diagnostic evaluation to determine maternal and fetal risk but also on how to manage them once they are pregnant and when to refer them to a regional center with expertise in pregnancy management.

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Section: Cardiac Outputmentioning

confidence: 99%

Section: Second Trimester (14-28 Weeks)mentioning

confidence: 99%

Management of Pregnancy in Patients With Complex Congenital Heart Disease: A Scientific Statement for Healthcare Professionals From the American Heart Association

Canobbio¹,

Warnes²,

Aboulhosn³

et al. 2017

Circulation

341

303

View full text Add to dashboard Cite

show abstract

“…The decrease in venous blood returning to the maternal heart results in pregnant women undergoing a caesarean section or turning from lateral to supine position in a decrease in cardiac Output and an increase in total peripheral resistance (TPR). (LEES et al [11], VORYS et al [16], LEES et al [9]). The rise in TPR is usually accompanied by an increase in uterine vasculare resistance [7].…”

Section: The Perfusion Pressure Uterine Vas-mentioning

confidence: 99%

Uterine hemodynamics and fetal response to vena caval occlusion in sheep

Künzel¹,

Kastendieck²,

Böhme³

et al. 1975

Journal of Perinatal Medicine

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“…(Bierniarz et al 1968) This aortocaval compression reduces maternal cardiac output (Vorys et al 1961;Lees et al 1967;Clark et al 1991;Danilenko-Dixon et al 1996), an event that is often concealed which leads to hypotension in the intra-operative period. Compression of IVC and the resultant fall in venous return is the major contributor compared with aortic compression for this fall in BP.…”

Section: Discussionmentioning

confidence: 99%

Effect of postural changes on inferior vena cava dimensions and its influence on haemodynamics during caesarean section under spinal anaesthesia

Kundra

Arunsekar

Vasudevan

et al. 2014

Journal of Obstetrics and Gynaecology

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The effect of postural changes on inferior vena cava (IVC) dimensions and its influence on intra-operative haemodynamics in term parturients can be studied using abdominal ultrasound by a subcostal approach. Thirty-two term parturients scheduled to undergo elective caesarean section under spinal anaesthesia were recruited in this observational study. End expiratory diameter and collapsibility index of IVC was measured preoperatively in 3 different positions - supine, recumbent with wedge and left lateral positions. End expiratory diameter was significantly high in recumbent (10.79) and left lateral (12.27) compared with supine (9.96) position (P < 0.0001). A greater fall in systolic blood pressure (>20%) was noted in patients with collapsibility index of more than 11.5 in recumbent with wedge position with a positive predictive value of 86%. IVC dimensions change significantly with change in position and collapsibility index in recumbent position can be a useful parameter for predicting hypotension during caesarean section under spinal anaesthesia.

show abstract

The cardiac output changes in various positions in pregnancy

Cited by 58 publications

References 10 publications

Management of Pregnancy in Patients With Complex Congenital Heart Disease: A Scientific Statement for Healthcare Professionals From the American Heart Association

Management of Pregnancy in Patients With Complex Congenital Heart Disease: A Scientific Statement for Healthcare Professionals From the American Heart Association

Uterine hemodynamics and fetal response to vena caval occlusion in sheep

Effect of postural changes on inferior vena cava dimensions and its influence on haemodynamics during caesarean section under spinal anaesthesia

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