British Journal of Anaesthesia, Vol 77, Issue 5 632-635, Copyright © 1996 by The Board of Management and Trustees of the British Journal of Anaesthesia
T. G. Cheek, P. Samuels, F. Miller, M. Tobin and B. B. Gutsche
This study was designed to observe the effects of i.v. fluid infusion on
uterine activity during normal labour in women receiving an extradural
block. Thirty-four women in spontaneous labour at term gestation were
allocated randomly and prospectively to one of three i.v. pre-extradural
fluid load groups: group A, no fluid load; group B, normal saline 500 ml;
and group C, normal saline 1000 ml. Continuous internal measurement of
uterine activity was observed before, during and after fluid infusion and
extradural block. In groups A and B, uterine activity did not change. In
group C, uterine activity decreased after infusion of saline (P < 0.01)
and returned to baseline over the next 20 min. Extradural block was not
associated with a change in uterine activity. Hypotension was not increased
in the group that received no fluid preload.
CLINICAL INVESTIGATIONS
Normal saline i.v. fluid load decreases uterine activity in active labour
Department of Anesthesia and Obstetrics and Gynecology, Hospital of the University of Pennsylvania, 3400 Spruce St, Philadelphia, PA 19104, USA
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