DALLAS April 29, 2010 Tamiflu and two other drugs used to treat influenza appear safe for pregnant women and their babies, researchers at UT Southwestern Medical Center have found in a retrospective study of 239 cases of women who received the medications during pregnancy.
The study provides "reassuring safety data about commonly used medications," the researchers concluded in their study, which appears in the April issue of Obstetrics and Gynecology.
"A woman has to balance the benefits and potential risks of any medication taken during pregnancy. But with influenza, the added risks of complications from the disease in pregnancy need to be considered," said Dr. George Wendel, professor of obstetrics and gynecology at UT Southwestern and senior author of the study.
"This is the first large study that systematically looked at the safety of all these drugs in pregnancy," he said.
Researchers analyzed the medical records of 82,336 women who gave birth at Parkland Memorial Hospital from 2003 to 2008, a period that spanned five flu seasons. The investigators compared two groups of pregnant women: women without flu and women with flu who had received one of three oral medications marketed under the brands Tamiflu, Relenza and Flumadine. Of the women studied, 239 had flu and had been treated with one of the three medications.
The study showed no difference in the mothers' rates of preeclampsia, preterm birth, gestational diabetes, premature membrane rupture, fever during labor or prolonged hospital stay.
After birth, there was no difference in birth weight, need for intensive care, seizures or jaundice among the babies. There also was no significant difference in stillbirths or major or minor malformations that could be attributed to the medications, the study showed.
The only significant difference involved a bowel condition, necrotizing enterocolitis, often associated with prematurity. Two premat
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UT Southwestern Medical Center