[Perinatal morbidity and mortality in pregnancies that progressed with ruptured membranes at a public hospital in Northern Brazil].

PURPOSE

To identify obstetric and perinatal factors associated with perinatal morbidity and mortality in pregnancies that progressed with ruptured membranes.

METHODS

A cross-sectional hospital-based study with secondary data from records of patients (n=87) that evolved with the premature rupture of membranes between 24 and 42 weeks of gestation, admitted from January to April 2013 to a public hospital in Acre State, North of Brazil. Data were subjected to bivariate analysis for selection of variables to be used in a multiple regression model according to Poisson logistic regression with robust error.

RESULTS

The prevalence of perinatal morbidity-mortality was 51.4%, including a 2.3% death rate (2 cases) and a 9.2% fetal neonatal death rate (8 cases). The variables associated with mortality in the final multiple model were: number of prenatal consultations ≥6, with a prevalence ratio (PR) of 0.5 and a 95% confidence interval (95%CI) of 0.3-0.9, gestational age ≥30 weeks (PR=0.6; 95%CI 0.4-0.8), low birth weight (PR=2.9; 95%CI 1.5-5.4), and mechanical ventilation (PR=3.8; 95%CI 2.0-7.2).

CONCLUSION

Perinatal morbidity and mortality were high among cases of ruptured membranes. Morbidity and mortality were associated with factors such as fewer prenatal visits, extreme prematurity and low birth weight in this group.