The effect of amnioinfusion on the duration of labor.
OBJECTIVE
To test the hypothesis that women receiving intrapartum amnioinfusion have more rapid labors than do controls.


METHODS
Prospective clinical trials of amnioinfusion published in major American obstetric and gynecologic journals between 1985 and 1995, identified through a literature search using MEDLINE and manual index review, were examined.


METHODS
Eleven studies that presented data regarding the length of labor were identified. Each study was reviewed for the design, number of subjects enrolled, volume of amnioinfusate, birth weight, maternal parity, interval from amniorrhexis to delivery, and total length of labor.


RESULTS
Meta-analysis revealed no differences between amnioinfusion groups and controls with regard to length of labor or the interval between membrane rupture and delivery.


CONCLUSIONS
Amnioinfusion has no effect on the duration of labor.
Strong
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Phoenix Perinatal Associates, Division of Maternal-Fetal Medicine, Good Samaritan Regional Medical Center, Arizona, USA.
D000650:Amnion; D005260:Female; D006801:Humans; D007263:Infusions, Parenteral; D007743:Labor, Obstetric; D011247:Pregnancy; D013997:Time Factors