Previous studies have indicated that infants exposed to valproic acid in pregnancy are at increased risk for a range of malformations, including neural tube defects. While these studies have shown an association between valproic acid and various malformations, they have been limited in their ability to quantify the risk of certain, less common malformations. To do this, large population-based case–control studies are more appropriate.
Depression during pregnancy is relatively common, affecting about 10 to 15% of women. While there is a growing body of literature supporting the reproductive safety of certain antidepressants, many women and their physicians would prefer to avoid the use of these medications during pregnancy; thus, there is a clear need for effective non-pharmacologic treatments for women who suffer from depression during pregnancy.
There are strong parallels between the clinical management of bipolar disorder and epilepsy, and women with these disorders face significant challenges while pregnant or planning to conceive. In this setting, treatment decisions must balance the risks of recurrence of severe illness with the risks of potential harm to the fetus when certain medicines are taken during pregnancy.
Atypical antipsychotic medications are commonly used for the treatment of schizophrenia and bipolar disorder. Despite the increasing use of these medications in women of child-bearing age, there is still relatively little data addressing the reproductive safety of these medications.
A clinician asks:Â "Is there any data on the use of the Emsam patch in pregnancy?"
While anticonvulsants, such as lamotrigine (Lamictal), topiramate (Topamax), and gabapentin (Neurontin), are being used with increasing regularity for the treatment of women with bipolar disorder, we have limited information with respect to the reproductive safety of the newer anticonvulsant agents. In 2006, we reported on preliminary data indicating an increased risk of oral clefts among infants exposed to lamotrigine during the first trimester of pregnancy.
About 15% of women suffer from depression during pregnancy, and many reports have suggested that depression during pregnancy may have negative effects on the fetus.  A new study from researchers at the University of Michigan indicates a link between depression during pregnancy and infant sleep problems.
Women with bipolar disorder are at increased risk for recurrence of illness during pregnancy. Therefore, many women with bipolar disorder elect to continue treatment with medications during pregnancy after weighing the risks and benefits of various treatment options with their physicians. Lamotrigine (Lamictal) is an anticonvulsant used to treat bipolar disorder. While the safety data on this relatively new anticonvulsant in pregnancy is limited, pregnancy registry data suggests that lamotrigine may pose less of a risk to the developing fetus than with older anticonvulsants, such as valproate (Depakote). With lamotrigine emerging as an effective and relatively safe treatment for pregnant women with bipolar disorder, more attention is now being paid to the effects of pregnancy on lamotrigine levels.
There have long been concerns regarding the use of the anticonvulsant valproate (Depakote) during pregnancy. First trimester use of valproate has been associated with a 3-5% risk of neural tube defects, as well as an increased risk of other malformations affecting the heart, limbs, and genitals. A recent report published in the New England Journal of Medicine indicates that in utero exposure to valproate may also result in lower IQ.   Â
Over the last several years, a number of studies have indicated that exposure to antidepressants near the time of delivery may be associated with poor neonatal outcomes. A recent prospective study from Dubnov-Raz and colleagues published in the journal Pediatrics found an association between QTc interval prolongation in neonates and antenatal exposure to selective serotonin reuptake inhibitor (SSRI) antidepressants. The QT interval is a measurement of the heart's electrical cycle from ventricular depolarization to the end of ventricular polarization. It is determined from an electrocardiogram (ECG) and is corrected for heart rate.Â
