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|Title:||Maternal admission characteristics as risk factors for preterm birth|
van Geijn, H.
|Citation:||European Journal of Obstetrics Gynecology and Reproductive Biology, 2004; 112(1):43-48|
|Publisher:||Elsevier Sci Ireland Ltd|
|Dimitrios N. M. Papatsonis, Herman P. van Geijn, Otto P. Bleker, Herman J. Ader, and Gustaaf A. Dekker|
|Abstract:||Objective: The aim of this study is to identify a subset of women presenting with preterm labor not responding upon tocolytic therapy, eventually resulting in preterm birth. Study design: The maternal admission characteristics of 185 women with preterm labor receiving tocolysis were analysed for risk factors that could predict which women will deliver within 48 h after the start of tocolysis, or before 34 weeks gestation. Univariate analysis and multivariate logistic regression analysis was performed. Results: Logistic regression analysis identified the following risk factors for delivery within 48 h after the start of tocolysis: cervical dilatation at admission (odds ratio (OR, cm−1) 1.47; 95% confidence interval (CI), 1.44–1.49), elevated leukocyte count at admission (per 103 leukocytes/mm3) (OR 1.27; 95% CI, 1.26–1.28), use of nifedipine (OR 0.49; 95% CI, 0.26–0.49), and developing signs suggestive of chorioamnionitis following admission (OR 2.12; 95% CI, 1.04–4.33). For delivery before 34 weeks of gestation the following risk factors were identified: use of steroids (OR 5.87; 95% CI, 2.34–14.7), use of nifedipine (OR 0.46; 95% CI, 0.27–0.85), developing signs suggestive of chorioamnionitis following admission (OR 10.6; 95% CI, 3.1–35.9), and preterm premature rupture of the membranes (OR 12; 95% CI, 4.1–35.2). Conclusions: Risk factors associated for delivery within 48 h after starting tocolysis are: cervical dilatation at admission, elevated leukocyte count at admission, and developing signs suggestive of chorioamnionitis following admission. Use of nifedipine was associated with a delay of delivery >48 h. Risk factors associated for delivery within 34 weeks gestation are: use of steroids, developing signs suggestive of chorioamnionitis following admission, and ruptured membranes. Use of nifedipine was associated with a delay >34 weeks.|
|Keywords:||Risk factors; Preterm birth; Nifedipine; Ritodrine|
|Appears in Collections:||Obstetrics and Gynaecology publications|
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