Further, new studies need to be considered in context of the literature as a whole and collective clinical experience. A recent systematic review found that among 3,186 infants exposed to venlafaxine during the first trimester, there were 107 major malformations.19 This indicated a relative risk estimate of 1.12, with a 95% CI of 0.92 to 1.35. The authors concluded that venlafaxine exposure in the first trimester was not associated with an increased risk of malformations.
Expectant parents may come across a headline that implies a specific antidepressant causes problems, but have not read the study or know how to interpret it. Often it is best for a physician to find out what the basis of the concern is, and if possible, review the study with the patient to make sure it is in the right context, and if it applies to the individual patient’s situation.
Consider the ethical issues
In addition to preventive ethics, other critical ethical issues in pregnancy include omission bias, beneficence, and autonomy.4,20-24 Omission bias occurs when physicians are more concerned about acts of commission (in which treatment leads to a negative outcome) than they are about acts of omission, which involve not treating the patient’s illness. To address this, it is important to discuss with the patient both the risks of treating and the risks of not treating maternal depression, so that the mother can make the best decision for her own specific set of circumstances.
Regarding beneficence (promoting the patient’s best interest), consider both the mother’s and the infant’s best interest, which usually are quite closely related. Women may feel guilty about taking a medication that they perceive is harmful for the fetus but good for their own mental health. Physicians can help with this by providing education about the benefits of treating depression for the fetus’ benefit as well. The fetus is completely dependent on the environment that the mother places them in, not merely the medication effects (eg, psychologic/physiologic stress effects, poor diet, lack of exercise, risk of “self-medication”).
Regarding autonomy (a woman’s own decision-making), Coverdale et al21 discussed strategies that can enhance a pregnant patient’s autonomy—including discussing treatment options and counselling about the effects of depression itself in pregnancy, as well as considering the effects of depression on the process of decision-making. For example, a woman with depression may see the world through a negative lens or may have difficulty concentrating. Patients may also require education about the concept of relative risk in comparison to absolute risk—especially in light of attention-grabbing headlines.
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