do urinary tract infections protect the fetus?

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do urinary tract infections protect the fetus?

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OBJECTIVE: To study the impact of maternal health and obstetric complications on the risk for sudden intrauterine unexplained death. METHODS: All 76 cases of sudden intrauterine unexplained death and 165 explained stillbirths among singletons in Oslo, Norway (1986-1995) were compared with 582 controls. Information on maternal health was registered from antenatal health cards and the Medical Birth Registry of Norway. The effect of pregnancy duration was studied before logistic regression analysis corrected for pregnancy duration was performed. RESULTS: Urinary tract colonization or infection in pregnancy was associated with a reduced risk for subsequent sudden intrauterine unexplained death (odds ratio [OR] 0.29 [0.12-0.74]), whereas insufficient physiologic hemodilution during pregnancy (lowest hemoglobin greater than 13 g/mL) increased the risk for sudden intrauterine unexplained death (OR 9.50 [1.30-69.3]). However, the risk for sudden intrauterine unexplained death remained unaffect