2005, Number 4
Rev Med Inst Mex Seguro Soc 2005; 43 (4)
Calderón GJ, Vega MG, Velásquez TJ, Morales CR, Vega MAJ
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ABSTRACTPre-term childbirth is birth before 37 weeks. The incidence in Mexico is approximately between 5 and 10 % of all pregnancies and it constitutes one of the primary causes of morbidity and perinatal mortality.
Objective: To determine the maternal risk factors associated with preterm childbirth in the General Regional Hospital 1 of the Instituto Mexicano del Seguro Social, Querétaro.
Material and methods: A study of cases (A) and controls (B) was made from September 1st, 2001, to June 30th, 2002; group A: 138 patients who finished their pregnancy before the 37th week, group B: 138 patients whose pregnancy came to term. χ2, t Student, and the momios reason were used for statistical analysis.
Results: 8910 obstetric events were attended in the study period of which 600 patients (6.73 %) were pre-term. There was no significant statistical difference in the age, the pregnancy interruption process and pre-eclampsia-eclampsia variables. The factors associated with pre-term childbirth with meaningful difference (p ≤ 0.05) were weight and maternal height, premature rupture membrane, cervicovaginitis, gravidic hiperemesis, urinary infection, and anemia.
Conclusion: The incidence of pre-term childbirth as well as its associated factors were similar to those found in literature except for the pre-eclampsia-eclampsia syndrome.