Journal of perinatal medicine · 2011
Risk factors for preterm delivery with placenta previa.
СтатьяНазвание и аннотация: Перевод в очереди
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Fishman Shira G, Chasen Stephen T, Maheshwari Bani
Аннотация
AIMS: To identify factors associated with preterm delivery in cases of sonographically identified placenta previa.
METHODS: Pregnancies with sonographic evidence of placenta previa at ≥ 28 weeks were identified. Demographic information, antepartum course, and delivery information were extracted from electronic medical records. Statistical analysis was performed with Fisher's exact test, Mann-Whitney U, Spearman's ρ (correlation), and logistic regression. Continuous data are presented as median (interquartile range).
RESULTS: Of 113 singleton pregnancies with placenta previa, 54 (48%) delivered at term and 59 (52%) delivered preterm. Fifty-one (45%) experienced antepartum bleeding at a median gestational age of 31 weeks (29-33 weeks) with a median interval of 20 days (11-33 days) between first bleeding episode and delivery. Women with antepartum bleeding were more likely to be delivered for hemorrhage (36 of 51 vs. 8 of 62, P<0.001) and delivered emergently (40 of 51 vs. 14 of 62, P<0.001). Antepartum bleeding before 34 weeks had a positive predictive value of 88% for preterm birth and 83% for emergent delivery.
CONCLUSION: In pregnancies with placenta previa, antepartum bleeding is a strong predictor of preterm delivery.
METHODS: Pregnancies with sonographic evidence of placenta previa at ≥ 28 weeks were identified. Demographic information, antepartum course, and delivery information were extracted from electronic medical records. Statistical analysis was performed with Fisher's exact test, Mann-Whitney U, Spearman's ρ (correlation), and logistic regression. Continuous data are presented as median (interquartile range).
RESULTS: Of 113 singleton pregnancies with placenta previa, 54 (48%) delivered at term and 59 (52%) delivered preterm. Fifty-one (45%) experienced antepartum bleeding at a median gestational age of 31 weeks (29-33 weeks) with a median interval of 20 days (11-33 days) between first bleeding episode and delivery. Women with antepartum bleeding were more likely to be delivered for hemorrhage (36 of 51 vs. 8 of 62, P<0.001) and delivered emergently (40 of 51 vs. 14 of 62, P<0.001). Antepartum bleeding before 34 weeks had a positive predictive value of 88% for preterm birth and 83% for emergent delivery.
CONCLUSION: In pregnancies with placenta previa, antepartum bleeding is a strong predictor of preterm delivery.