PMID: 7333413Dec 1, 1981Paper

The influence of posture upon cardiovascular dynamics throughout pregnancy

European Journal of Obstetrics, Gynecology, and Reproductive Biology
A F AtkinsJ S Crawford

Abstract

Systemic blood pressure (measured with a zero-randomized sphyngmomanometer), stroke volume and heart-rate (measured with a Minnesota Impedance Cardiograph), hematocrit and their derivatives--cardiac output, pulse pressure, mean arterial blood pressure and peripheral vascular resistance, were assessed in 19 nonpregnant women of child-bearing age and in 27 patients who were examined at regular intervals on 12 to 15 occasions from 8 to 11 wk of pregnancy until 6-wk postpartum. Readings were made with the subjects in each of six positions: supine, reclining, left and right lateral, left and right tilt. The purpose of this paper is to compare the results of these different postures. Systolic and diastolic blood pressure readings were lowest in the left lateral and second lowest in the left tilt. We suggest that this reflects a hydrostatic pressure difference. Stroke volume and cardiac output were lowest in the right lateral and second lowest in the right tilt. Thus, the derived values of peripheral resistance were lowest when subjects were turned towards the left and highest when turned towards the right. The rank orders of values were maintained with impressive consistency between subjects (pregnant and nonpregnant) and throughout ...Continue Reading

References

Oct 1, 1978·British Journal of Obstetrics and Gynaecology·A A NaftalinW A Walters
Mar 1, 1974·Circulation·J R BurgJ Metcalfe
May 1, 1972·British Journal of Anaesthesia·J S CrawfordP Davies
Jun 1, 1967·The Journal of Obstetrics and Gynaecology of the British Commonwealth·M M LeesM G Kerr
Oct 1, 1981·European Journal of Obstetrics, Gynecology, and Reproductive Biology·A F AtkinsJ S Crawford
Apr 1, 1960·The Journal of Obstetrics and Gynaecology of the British Empire·F HOLMES

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Citations

Jan 1, 1984·European Journal of Obstetrics, Gynecology, and Reproductive Biology·E J WoutersP A de Jong
Sep 25, 2012·Current Opinion in Obstetrics & Gynecology·Karen MelchiorreBasky Thilaganathan
Mar 1, 1995·British Journal of Obstetrics and Gynaecology·T B HenriksenA J Wilcox
Jun 29, 2011·Journal of Cardiovascular Magnetic Resonance : Official Journal of the Society for Cardiovascular Magnetic Resonance·Alexia RossiRobert-Jan M van Geuns
Jan 1, 1991·Journal of Perinatal Medicine·K T Schneider, R Deckardt
May 18, 2013·Journal of Perinatology : Official Journal of the California Perinatal Association·J BurlingameT Seto
Dec 1, 1987·Baillière's Clinical Obstetrics and Gynaecology·W Dunlop, J M Davison
May 15, 1983·American Journal of Obstetrics and Gynecology·J M BelizánG F Bryce
Jul 1, 1986·British Journal of Obstetrics and Gynaecology·P DaviesJ S Crawford
Aug 1, 1988·The American Journal of Cardiology·R A LangeL D Hillis
Jun 1, 1987·British Journal of Obstetrics and Gynaecology·F M McLennanJ M Rawles
Sep 1, 1989·British Journal of Obstetrics and Gynaecology·S M Kinsella, J A Spencer
Apr 1, 1983·Anaesthesia·B NewmanC Dore
Jun 1, 1994·Baillière's Clinical Obstetrics and Gynaecology·S N SturgissJ M Davison

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