G J Chan1,2, M Silverman1, M Zaman3, A Murillo-Chaves4, A Mahmud3, A H Baqui5, T K Boyd4. 1. Division of Medicine Critical Care, Boston Children's Hospital, Boston, MA, USA. 2. Department of Global Health and Population, Harvard T.H. Chan School of Public Health, Boston, MA, USA. 3. Centre for Child and Adolescent Health, International Centre for Diarrhoeal Disease Research, Dhaka, Bangladesh. 4. Department of Pathology, Boston Children's Hospital, Boston, MA, USA. 5. Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
Abstract
OBJECTIVE: To estimate the association between chorioamnionitis, maternal risk factors and birth outcomes. STUDY DESIGN: A cross-sectional study of 600 pregnant women was conducted at a maternity center in Dhaka from January to October 2011. Outcomes included histologic, microbiologic and clinical chorioamnionitis. Log-binomial models assessed the association between risk factors and histologic chorioamnionitis (HC). RESULTS: Of the 552 women with placental specimens, 70 (12.7%) were classified with HC: 46 (65.7%) with and 24 (34.3%) without fetal involvement. HC was associated with non-physician care (relative risk [RR] 2.04, 95% confidence interval [CI] 1.04 to 4.00), home slab or hanging latrine (RR 1.69, 95% CI 1.10 to 2.62), and lack of tetanus toxoid (RR 1.80, 95% CI 1.03 to 3.14). Women with fever (RR 2.30, 95% CI 1.18 to 4.50) or discolored amniotic fluid (RR 1.74, 95% CI 1.08 to 2.81) had a higher risk of HC. Microbiologic and clinical chorioamnionitis were unreliable HC measures. CONCLUSION: Prevalence of HC is high; many cases are not captured by clinical diagnosis or microbiologic cultures.
OBJECTIVE: To estimate the association between chorioamnionitis, maternal risk factors and birth outcomes. STUDY DESIGN: A cross-sectional study of 600 pregnant women was conducted at a maternity center in Dhaka from January to October 2011. Outcomes included histologic, microbiologic and clinical chorioamnionitis. Log-binomial models assessed the association between risk factors and histologic chorioamnionitis (HC). RESULTS: Of the 552 women with placental specimens, 70 (12.7%) were classified with HC: 46 (65.7%) with and 24 (34.3%) without fetal involvement. HC was associated with non-physician care (relative risk [RR] 2.04, 95% confidence interval [CI] 1.04 to 4.00), home slab or hanging latrine (RR 1.69, 95% CI 1.10 to 2.62), and lack of tetanus toxoid (RR 1.80, 95% CI 1.03 to 3.14). Women with fever (RR 2.30, 95% CI 1.18 to 4.50) or discolored amniotic fluid (RR 1.74, 95% CI 1.08 to 2.81) had a higher risk of HC. Microbiologic and clinical chorioamnionitis were unreliable HC measures. CONCLUSION: Prevalence of HC is high; many cases are not captured by clinical diagnosis or microbiologic cultures.
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