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J Reprod Med. 2012 May-Jun;57(5-6):270-6.

Effects of maternal left lateral position and rest on amniotic fluid index: a prospective clinical study.

Author information

1
Department of Obstetrics and Gynecology, Kafkas University School of Medicine, Kars, Turkey. kahramanulker@hotmail.com

Abstract

OBJECTIVE:

To compare the effect of both maternal rest and activity on the amniotic fluid index (AFI).

STUDY DESIGN:

Power analysis indicated that in order to achieve 20 mm of increase in AFI with 90% of power at one side alpha of 0.01, we needed at least 51 women in each group. The study group was comprised of pregnant women (n = 152) with a normal AFI and a singleton pregnancy at 26-40 weeks' gestation. Their AFI was determined by averaging the 2 repetitive measurements of the 4 amniotic fluid quadrants. The "rest" group (n = 77) was instructed to lie and rest in the left lateral position, and the "mild activity" group (n = 75) was instructed to sit and walk.

RESULTS:

AFI increased significantly, from 151.25 +/- 37.40 mm to 173.79 +/- 39.76 mm, in the "rest" group (p = 0.00). However, the change from 153.69 +/- 37.94 to 152.34 +/- 36.62 mm was not significant in the "mild activity" group (p = 0.167).

CONCLUSION:

Maternal rest in the left lateral position increases the AFI.

PMID:
22696825
[Indexed for MEDLINE]

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