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Creado el : 27 Apr 2005
Alterado em : 02 Dec 2007

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Ficha bibliográfica (sin autores) :

Posture and epidural block in pregnant women at term. Effects on arterial blood pressure and limb blood flow. Anaesthesia. 1975 Nov;30(6):752-6.

Autores :

Weaver JB, Pearson JF, Rosen M.

Año de publicación :

1975

URL(s) :

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=…

Résumé (français)  :

Abstract (English)  :

Upper and lower limb blood flow was measured in 4 full-term 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, which is the probable mechanism for foetal decompensation. Therefore the supine position should be avoided with an epidural block. In other patients it would be wise not to rely upon maternal compensatory mechanisms.

Sumário (português)  :

Resumen (español)  :

Comentarios :

Argument (français) :

La position sur le dos devrait être évitée en cas de péridurale, car elle est probablement responsable de décompensation fœtale.

Argument (English):

Argumento (português):

Argumento (español):

Palabras claves :

➡ medicina basada en la evidencia ; fisiología ; posición durante el parto ; epidural

Autor de este registro :

Cécile Loup — 27 Apr 2005