title: [Association between mode of delivery and maternal complications in a public hospital in Greater Metropolitan São Paulo, Brazil].
abstract: The purpose of this study was to assess the relationship between mode of delivery and maternal complications, based on a retrospective cohort of all births at a public hospital in 2003. Complications included: infection, hemorrhage, hysterectomy, uterine rupture, lesions in adjacent organs, deep venous thrombosis, and pulmonary embolism. The analysis used odds ratio (OR), chi-squared test, and Fisher's exact test, besides logistic regression. Fifteen complications were identified. Taking vaginal delivery as the reference, an association was found between cesarean section and overall complications. Analysis of confounding showed an association between hypertension, HIV, placenta previa, and abruptio placentae. After controlling for these variables, an association remained between overall complications and cesarean section (OR = 9.7; p = 0.04). Another analysis comparing elective cesareans and vaginal deliveries also showed an increased risk for cesarean (OR = 4.7; p = 0.02). Finally, comparing elective cesareans with trial of labor, we found an increased proportion of complications in elective cesareans, with borderline significance (OR = 3; p = 0.058). We concluded that cesarean section is associated with maternal morbidity, even after controlling for confounders.
authors.affiliation: Faculdade de Medicina do ABC, Santo André, Brasil. machado-maria@uol.com.br
authors.forename: Luís Carlos
authors.initials: LC
authors.lastname: Machado Junior
authors.forename: Christian Eric
authors.initials: CE
authors.lastname: Sevrin
authors.forename: Emerson de
authors.initials: Ed
authors.lastname: Oliveira
authors.forename: Heráclito Barbosa de
authors.initials: HB
authors.lastname: Carvalho
authors.forename: Jorge Washington
authors.initials: JW
authors.lastname: Zamboni
authors.forename: José Carlos de
authors.initials: JC
authors.lastname: Araújo
authors.forename: Marilande
authors.initials: M
authors.lastname: Marcolin
authors.forename: Paulo
authors.initials: P
authors.lastname: Caruso
authors.forename: Pedro Ferreira
authors.initials: PF
authors.lastname: Awada
authors.forename: Ricardo Zanetti
authors.initials: RZ
authors.lastname: Giunta
authors.forename: Wirley
authors.initials: W
authors.lastname: Munhoz
authors.forename: Mauro
authors.initials: M
authors.lastname: Sancovski
authors.forename: Sérgio
authors.initials: S
authors.lastname: Peixoto
mesh_terms: D000037:Abruptio Placentae / Q000453:epidemiology; D000293:Adolescent; D000328:Adult; D001938:Brazil / Q000453:epidemiology; D002585:Cesarean Section / Q000009:adverse effects / Q000706:statistics & numerical data; D036861:Delivery, Obstetric / Q000009:adverse effects* / Q000379:methods; D017558:Elective Surgical Procedures / Q000009:adverse effects; D004812:Epidemiologic Methods; D005260:Female; D015658:HIV Infections / Q000150:complications / Q000453:epidemiology; D006779:Hospitals, Public; D006801:Humans; D006973:Hypertension / Q000150:complications / Q000453:epidemiology; D007044:Hysterectomy / Q000706:statistics & numerical data; D008875:Middle Aged; D007744:Obstetric Labor Complications / Q000453:epidemiology / Q000209:etiology*; D010923:Placenta Previa / Q000453:epidemiology; D006473:Postpartum Hemorrhage / Q000453:epidemiology / Q000209:etiology; D011247:Pregnancy; D012307:Risk Factors; D055815:Young Adult