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Published in: BMC Pregnancy and Childbirth 1/2011

Open Access 01-12-2011 | Research article

Treatment of asymptomatic vaginal candidiasis in pregnancy to prevent preterm birth: an open-label pilot randomized controlled trial

Authors: Christine L Roberts, Kristen Rickard, George Kotsiou, Jonathan M Morris

Published in: BMC Pregnancy and Childbirth | Issue 1/2011

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Abstract

Background

Although the connection between ascending infection and preterm birth is undisputed, research focused on finding effective treatments has been disappointing. However evidence that eradication of Candida in pregnancy may reduce the risk of preterm birth is emerging. We conducted a pilot study to assess the feasibility of conducting a large randomized controlled trial to determine whether treatment of asymptomatic candidiasis in early pregnancy reduces the incidence of preterm birth.

Methods

We used a prospective, randomized, open-label, blinded-endpoint (PROBE) study design. Pregnant women presenting at <20 weeks gestation with singleton pregnancies self-collected a vaginal swab. Those who were asymptomatic and culture positive for Candida were randomized to 6-days of clotrimazole vaginal pessaries (100mg) or usual care (screening result is not revealed, no treatment). The primary outcomes were the rate of asymptomatic vaginal candidiasis, participation and follow-up. The proposed primary trial outcome of spontaneous preterm birth <37 weeks gestation was also assessed.

Results

Of 779 women approached, 500 (64%) participated in candidiasis screening, and 98 (19.6%) had asymptomatic vaginal candidiasis and were randomized to clotrimazole or usual care. Women were not inconvenienced by participation in the study, laboratory testing and medication dispensing were problem-free, and the follow-up rate was 99%. There was a tendency towards a reduction in spontaneous preterm birth among women with asymptomatic candidiasis who were treated with clotrimazole RR = 0.33, 95%CI 0.04-3.03.

Conclusions

A large, adequately powered, randomized trial of clotrimazole to prevent preterm birth in women with asymptomatic candidiasis is both feasible and warranted.

Trial registration

Australia and New Zealand Clinical Trials Register (ANZCTR): ACTRN12609001052​224
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Metadata
Title
Treatment of asymptomatic vaginal candidiasis in pregnancy to prevent preterm birth: an open-label pilot randomized controlled trial
Authors
Christine L Roberts
Kristen Rickard
George Kotsiou
Jonathan M Morris
Publication date
01-12-2011
Publisher
BioMed Central
Published in
BMC Pregnancy and Childbirth / Issue 1/2011
Electronic ISSN: 1471-2393
DOI
https://doi.org/10.1186/1471-2393-11-18

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