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Association between in utero zidovudine exposure and nondefect adverse birth outcomes: analysis of prospectively collected data from the Antiretroviral Pregnancy Registry.


ABSTRACT:

Objective

To examine the association between nondefect adverse birth outcomes and in utero exposure to zidovudine (ZDV)-containing regimens versus non-ZDV antiretroviral (ARV) regimens.

Design

Analysis of prospectively-collected data.

Setting

Global.

Population

HIV-infected pregnant women prenatally exposed to antiretrovirals.

Methods

Estimation of prevalence of and risk for nondefect adverse birth outcomes among HIV-infected women.

Main outcome measures

Prevalence of and risk for nondefect adverse birth outcomes.

Results

Among 12 780 singleton birth outcomes with in utero ZDV exposure, 96.1% were live births; 3.9% were spontaneous abortions, induced abortions or stillbirths. Among live births, 16.4% were low birthweight (LBW); 12.3% were premature. Among 1904 outcomes with in utero exposure to non-ZDV ARV regimens, 85.8% were live births; 14.2% were spontaneous abortions, induced abortions or stillbirths. Among live births, 14.1% were LBW; 12.4% were premature. Relative risk comparing exposure to ZDV-containing ARV regimens to non-ZDV ARV regimens for spontaneous abortions was 0.18 (95% confidence interval [95% CI] 0.14-0.22); induced abortions 0.28 (95% CI 0.22-0.36); stillbirths 0.76 (95% CI 0.51-1.12); premature births 1.00 (95% CI 0.87-1.15) and LBW 1.17 (95% CI 1.02-1.33).

Conclusion

Prevalence of nondefect adverse birth outcomes is lower among outcomes with in utero ZDV exposure versus in utero non-ZDV ARV exposure. The risks for spontaneous and induced abortions were no different for ZDV-containing regimens versus non-ZDV ARV regimens. For premature births and stillbirths, there was no significant difference in risk between the two regimens. The risk of LBW was statistically significantly higher among ZDV-containing regimens versus non-ZDV ARV regimens.

Tweetable abstract

ZDV-containing regimens do not increase the risk for nondefect adverse birth outcomes.

SUBMITTER: Vannappagari V 

PROVIDER: S-EPMC5042033 | biostudies-literature | 2016 May

REPOSITORIES: biostudies-literature

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Publications

Association between in utero zidovudine exposure and nondefect adverse birth outcomes: analysis of prospectively collected data from the Antiretroviral Pregnancy Registry.

Vannappagari V V   Koram N N   Albano J J   Tilson H H   Gee C C  

BJOG : an international journal of obstetrics and gynaecology 20150812 6


<h4>Objective</h4>To examine the association between nondefect adverse birth outcomes and in utero exposure to zidovudine (ZDV)-containing regimens versus non-ZDV antiretroviral (ARV) regimens.<h4>Design</h4>Analysis of prospectively-collected data.<h4>Setting</h4>Global.<h4>Population</h4>HIV-infected pregnant women prenatally exposed to antiretrovirals.<h4>Methods</h4>Estimation of prevalence of and risk for nondefect adverse birth outcomes among HIV-infected women.<h4>Main outcome measures</h  ...[more]

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