What question did this study set out to answer?

To evaluate the effect of nightly maternal positional therapy using the PrenaBelt during the third trimester of pregnancy on birth weight and birth weight centiles.

April 1, 2019BMJ OpenOpen Access

The Ghana PrenaBelt trial: a double-blind, sham-controlled, randomised clinical trial to evaluate the effect of maternal positional therapy during third-trimester sleep on birth weight

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Authors

JCJerry ColemanUniversity of Ghana MOMaxfield OkereKorle Bu Teaching Hospital JSJ.D. SeffahUniversity of Ghana

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Implication

Randomized double-blind trial finds maternal positional therapy during late pregnancy does not alter infant birth weight, indicating sleep positioning devices may not affect fetal growth.

Key Points

To evaluate the effect of nightly maternal positional therapy using the PrenaBelt during the third trimester of pregnancy on birth weight and birth weight centiles.
Double-blind, sham-controlled, randomized clinical trial conducted at a single tertiary center in Accra, Ghana (NCT02379728) involving 167 analyzed participants.
Participants were randomized 1:1 using sealed envelopes to wear either the active PrenaBelt or a sham-PrenaBelt nightly during sleep for approximately 12 weeks.
Mean birth weight was 3,191 ± 483 g in the PrenaBelt group (n=83) versus 3,081 ± 484 g in the sham-PrenaBelt group (n=84), reflecting a difference of 110 g (95% CI, -38 to 258; p=0.14).
Median customised birth weight centile was 43% (IQR, 18 to 67) in the PrenaBelt group versus 31% (IQR, 14 to 58) in the sham group (difference 7%, 95% CI -2 to 17, p=0.11), with 56% nightly adherence.

Cite This Study

Coleman et al. (2019) studied this question.

synapsesocial.com/papers/6a72399dac440176ef2a92d5 https://doi.org/10.1136/bmjopen-2018-022981

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Implication

Randomized double-blind trial finds maternal positional therapy during late pregnancy does not alter infant birth weight, indicating sleep positioning devices may not affect fetal growth.