Previous cesarean delivery associated with subsequent preterm birth in the United States.
Eur J Obstet Gynecol Reprod Biol
; 229: 88-93, 2018 Oct.
Article
em En
| MEDLINE
| ID: mdl-30130688
ABSTRACT
OBJECTIVE:
To examine the relationship between previous cesarean delivery and subsequent preterm birth in the second pregnancy among women in the United States with registered birth records. STUDYDESIGN:
We conducted a retrospective cohort study utilizing United States birth certificate data to generate the study population, which consisted of women delivering a singleton infant in their second live birth (nâ¯=â¯1,076,517) in the year 2016. Preterm birth and previous cesarean delivery measures were derived from United States birth certificates. Covariates included maternal age, race/ethnicity, education, marital status, payer source for delivery, pre-pregnancy body mass index, previous preterm birth, interpregnancy interval, and factors in the second pregnancy such as hypertensive disorders, diabetes, and cigarette use, trimester prenatal care began, weight gain during pregnancy, and presence of congenital anomalies. Women who experienced a cesarean delivery in the first pregnancy were compared to those who did not.RESULTS:
When controlling for all covariates, women who had a cesarean delivery in their first pregnancy were 14% more likely to have a preterm birth in their second pregnancy (ORâ¯=â¯1.137, 95% CIâ¯=â¯1.117-1.158) compared to women who had not previously experienced a cesarean delivery. When risk was analyzed by sub categories of preterm birth based on gestational age, a differential association was noted, with a 10% increased risk of delivering before 34 weeks, a 1% increased risk for delivery between 34-36 weeks and no increased risk for delivery after 36 weeks compared to delivery at 39-40 weeks.CONCLUSION:
This small, but statistically significant association between previous cesarean section and subsequent preterm birth suggests that efforts to reduce the number of index cesarean sections may contribute to reducing the overall preterm birth rate in the United States.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cesárea
/
Nascimento Prematuro
Tipo de estudo:
Observational_studies
/
Risk_factors_studies
Limite:
Adult
/
Female
/
Humans
/
Pregnancy
País/Região como assunto:
America do norte
Idioma:
En
Revista:
Eur J Obstet Gynecol Reprod Biol
Ano de publicação:
2018
Tipo de documento:
Article