Epidemiologic characteristics of preterm delivery: Etiologic heterogeneity

Savitz, David A.; Blackmore, Cheryl A.; Thorp, John M.

doi:10.1016/s0002-9378(11)80001-3

Cited by 338 publications

(163 citation statements)

References 13 publications

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“…A total of 233 preterm delivery cases were identified; of these 2 were subsequently excluded because information concerning the presence or absence of vaginal bleeding in pregnancy was not available. Using detailed information collected from medical records, preterm delivery cases were categorized according to the three pathophysiological groups previously described (i.e., spontaneous preterm labor and delivery, preterm premature rupture of membranes, and medically induced preterm delivery) (8,10,11). Preterm delivery cases were also categorized according to gestational age at delivery (i.e., very preterm delivery, defined as delivery prior to the completion of 34 weeks gestation; and moderate preterm delivery, defined as delivery between 34 and 36 weeks gestation).…”

Section: Pregnancy Outcome Vaginal Bleeding and Other Covariatesmentioning

confidence: 99%

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Risk of preterm delivery in relation to vaginal bleeding in early pregnancy

Hossain

Harris

Lohsoonthorn

et al. 2007

European Journal of Obstetrics & Gynecology and Reproductiv

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Objective-To examine the relationship between vaginal bleeding during early pregnancy and preterm delivery.Methods-Study subjects (N=2,678) provided information regarding socio-demographic, biomedical, and lifestyle characteristics. Logistic regression was used to estimate odds ratios (OR) and 95% confidence intervals (95%CI).Results-Any vaginal bleeding in early pregnancy was associated with a 1.57 fold increased risk of preterm delivery (95%CI: 1.16-2.11). Vaginal bleeding was most strongly related with spontaneous preterm labor (OR=2.10) and weakly associated with preterm premature rupture of membrane (OR=1.36) and medically induced preterm delivery (OR=1.32). As compared to women with no bleeding, those who bled during the first and second trimesters had a 6.24-fold increased risk of spontaneous preterm labor; and 2-3-fold increased risk of medically induced preterm delivery and preterm premature rupture of membrane, respectively. Conclusion-Vaginal bleeding, particularly bleeding that persists across the first two trimesters, is associated with an increased risk of preterm delivery.

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Section: Pregnancy Outcome Vaginal Bleeding and Other Covariatesmentioning

confidence: 99%

“…On the basis of this emerging evidence, we used data from a large cohort to further evaluate the relation between vaginal bleeding during the first and second trimester with preterm delivery. We also completed stratified analyses in attempts to account for the possible heterogeneity in the etiology of preterm delivery (8)(9)(10)(11).…”

Section: Introductionmentioning

confidence: 99%

Risk of preterm delivery in relation to vaginal bleeding in early pregnancy

Hossain

Harris

Lohsoonthorn

et al. 2007

European Journal of Obstetrics & Gynecology and Reproductiv

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“…2 Induced delivery or caesarean section. 3 Reference population: 20 -35-years-old primiparas, born in Denmark, with singleton, spontaneously conceived pregnancies. 4 p-values obtained from simple logistic regression analyses with the dichotomized variables specified as outcome variables, and year of birth as the only independent variable.…”

Section: Discussionmentioning

confidence: 99%

Secular Trend of Gestational Age Specific Preterm Birth Rate in Korean Singleton and Multiple Birth: 1997-98, 2013-14

Park¹,

Kim²,

Lim³

2017

J Health Info Stat

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“…The causes for preterm birth in twins are classified into three clinical subtypes: preterm birth after (preterm) premature rupture of membranes (PROM), spontaneous onset of labor (these two groups are termed spontaneous preterm birth), and medically indicated preterm birth after iatrogenic obstetrical interventions for maternal-fetal indications [6,7].…”

Section: Etiology Of Preterm Birthmentioning

confidence: 99%

Twin and Preterm Labor: Prediction and Treatment

Aboulghar

Islam

2013

Curr Obstet Gynecol Rep

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Twin pregnancies are increasing. Preterm birth is a major health problem with high incidence all over the world. It is known to have a higher incidence in twin pregnancies as well as being higher in IVF/ICSI pregnancies. Prediction of preterm birth in twins through transvaginal cervical length measurement and vaginal fetal fibronectin measurement are good and well-documented methods. However, this could not be applied to IVF pregnancies. Prevention of preterm birth by administration of vaginal natural progesterone or IM synthetic progesterone injections is not effective in twins. The situation was similar with administration of progesterone to IVF twin pregnancies. Prophylactic cerclage for prevention of preterm birth in twins resulted in an increase of the incidence of preterm birth. Tocolytics also are ineffective, although nifedipine may have a role in treatment of threatened preterm birth in twins.

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Epidemiologic characteristics of preterm delivery: Etiologic heterogeneity

Cited by 338 publications

References 13 publications

Risk of preterm delivery in relation to vaginal bleeding in early pregnancy

Risk of preterm delivery in relation to vaginal bleeding in early pregnancy

Secular Trend of Gestational Age Specific Preterm Birth Rate in Korean Singleton and Multiple Birth: 1997-98, 2013-14

Twin and Preterm Labor: Prediction and Treatment

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