Is antiretroviral therapy during pregnancy associated with an increased risk of preterm delivery, low birth weight, or stillbirth?
BACKGROUND
Data on complications of pregnancy associated with antiretroviral therapy are limited. Some small studies have demonstrated an increased preterm delivery rate, but a recent retrospective United States multisite study did not concur with these findings. Our objective was to investigate whether antiretroviral therapy was associated with adverse pregnancy outcome at a single site.


METHODS
Using prospectively gathered data, women were identified who were determined to be human immunodeficiency virus positive before or during pregnancy who sought care at our prenatal clinic and who gave birth at the University of Miami/Jackson Memorial Medical Center from 1990 through 2002. The outcome measures were preterm delivery, low birth weight, and stillbirth.


RESULTS
The cohort included 999 women who received antiretroviral therapy during pregnancy (monotherapy in 492, combination therapy without a protease inhibitor [PI] in 373, and combination therapy with a PI in 134) and 338 women who did not receive therapy. After adjustment for possible confounders, only combination therapy with a PI was associated with an increased risk of preterm delivery, compared with any other combination (odds ratio, 1.8 [95% confidence interval, 1.1-3.0]). There were no differences in rates of low birth weight and stillbirth, regardless of therapy.


CONCLUSIONS
Compared with monotherapy and combination therapy without a PI, only combination therapy with a PI was associated with an increased risk of preterm delivery.
Cotter
Amanda M
AM
Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, University of Miami, Miami, Florida 33101, USA. acotter@med.miami.edu
Garcia
Adolfo Gonzalez
AG
Duthely
M Lunthita
ML
Luke
Barbara
B
O'Sullivan
Mary J
MJ
D000293:Adolescent; D000328:Adult; D019380:Anti-HIV Agents / Q000009:adverse effects; D004359:Drug Therapy, Combination; D005260:Female; D015658:HIV Infections / Q000188:drug therapy / Q000517:prevention & control* / Q000635:transmission; D017320:HIV Protease Inhibitors / Q000009:adverse effects*; D006801:Humans; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D018445:Infectious Disease Transmission, Vertical / Q000517:prevention & control*; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000188:drug therapy*; D011256:Pregnancy Outcome; D047928:Premature Birth / Q000453:epidemiology; D012306:Risk; D050497:Stillbirth / Q000453:epidemiology
D019380:Anti-HIV Agents; D017320:HIV Protease Inhibitors