PMID: 1211585Nov 1, 1975Paper

Posture and epidural block in pregnant women at term. Effects on arterial blood pressure and limb blood flow

Anaesthesia
J B WeaverM Rosen

Abstract

Upper and lower limb blood flow was measured in 4 fullterm pregnant women in the left lateral and supine positions before and after epidural block. Radial artery mean blood pressure was recorded in 6 full term pregnant women under the same conditions. Before epidural block there was a much greater reduction in lower limb blood flow (39-1%) than in upper limb blood flow (13-5%) when women moved from the lateral to the supine position; this was probably the result of aortic compression. Mean radial artery pressure increased slightly by 4-6% due to maternal overcompensation in the upper part of the body. After epidural block, patients in the lateral position had a mean rise in lower limb blood flow of 25% and a reduction in upper limb blood flow of 37-2%. The mean arterial pressure remained unchanged. In the supine position there was no further reduction of upper limb blood flow; this was accompanied on average by a 9% fall in mean radial arterial pressure indicating decompensation in the mother. The leg blood flow fell less, 26-9% than before epidural block. In the supine position, a greater flow to the legs, associated with a decreased mean arterial pressure, would be expected to lead to a diminution in placental perfusion, whic...Continue Reading

References

Jan 1, 1974·Anesthesiology·K L Eckstein, G F Marx
Jun 15, 1974·British Medical Journal·G B DrummondD B Scott
Apr 1, 1972·The Journal of Obstetrics and Gynaecology of the British Commonwealth·B S Schifrin
Jun 1, 1967·The Journal of Obstetrics and Gynaecology of the British Commonwealth·M M LeesM G Kerr
Jul 1, 1953·The Journal of Physiology·R J WHITNEY

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Citations

Jul 1, 1990·European Journal of Obstetrics, Gynecology, and Reproductive Biology·S M KinsellaJ A Spencer
Oct 1, 1978·British Journal of Obstetrics and Gynaecology·A A NaftalinW A Walters
Jun 1, 1979·British Journal of Obstetrics and Gynaecology·R P Husemeyer, J C Crawley
Nov 1, 1991·British Journal of Obstetrics and Gynaecology·K S Oláh, H Gee
Dec 1, 2009·International Journal of Obstetric Anesthesia·N A RichardsS M Yentis
Feb 1, 1978·Anaesthesia and Intensive Care·P Brownridge
Dec 1, 1983·Anaesthesia·W J Rickford, F Reynolds

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