Moms' antidepressants hit third of newborns: study
Posted on: Monday, 6 February 2006, 16:03 CST
CHICAGO (Reuters) - Nearly one in three infants born to women taking anti-depressant drugs exhibit signs of withdrawal and expectant mothers may want to limit the drugs they take, researchers said on Monday.
Symptoms such as high-pitched crying, tremors, gastrointestinal problems and disturbed sleep may show up in the first 48 hours after birth and were more pronounced in infants whose mothers had been taking higher doses.
A closer look at the 37 infants exposed in the womb to paroxetine hydrochloride, sold as Paxil by GlaxoSmithKline, showed the risk of symptoms disappeared if the mother's dosage was less than 20 milligrams daily while the risk was highest among those exposed to 27 milligrams or more.
Thirty percent of the 60 newborns exposed to one of the popular class of drugs known as selective serotonin reuptake inhibitors (SSRIs) in the womb were found to have withdrawal symptoms and the symptoms were classified as severe in 13 percent, said the study by Dr. Rachel Levinson-Castiel of the Children's Medical Center of Israel, in Petah Tiqwa.
Symptoms usually did not peak until after the first day of life but the long-term effects are not known, the study said.
Two of the exposed infants suffered seizures but they did not persist.
Previous studies into the effects of SSRIs on newborns have identified other symptoms such as rapid breathing, bluish skin color from lack of oxygen, feeding difficulties, low blood sugar and jitteriness.
Yet a study published last week by researchers at Massachusetts General Hospital in Boston said women who need an antidepressant cannot depend on hormonal changes in pregnancy to relieve their symptoms so may choose to continue taking the drug.
"Because maternal depression during pregnancy also entails a risk to the newborn, the risk-benefit ratio of continuing SSRI treatment should be assessed," Levinson-Castiel wrote in the journal Archives of Pediatrics and Adolescent Medicine.
Unfortunately, "the long-term effects of in utero exposure to SSRIs have not been demonstrated clearly," not even for those whose symptoms were severe early on, she wrote.
Both studies recommended pregnant women simplify their drug regimen to a single drug at the lowest effective dose.
Source: REUTERS
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