Where TMS fits in treating depression during pregnancy
The real question we are getting asked in clinic, both in person and during virtual rounds with multidisciplinary colleagues from across the world, is where TMS might fit into the algorithm for treating of depression during pregnancy. Where is it appropriate to be thinking about TMS in pregnancy, and where should it perhaps be deferred at this moment (and where is it not appropriate)?
It is probably of limited value (and possibly of potential harm) to switch to TMS in patients who have severe recurrent major depression and who are on maintenance antidepressant, and who believe that a switch to TMS will be effective for relapse prevention; there are simply no data currently suggesting that TMS can be used as a relapse prevention tool, unlike certain other nonpharmacologic interventions.
What about managing relapse of major depressive disorder during pregnancy in a patient who had responded to an antidepressant? We have seen patients with histories of severe recurrent disease who are managed well on antidepressants during pregnancy who then have breakthrough symptoms and inquire about using TMS as an augmentation strategy. Although we don’t have clear data supporting the use of TMS as an adjunct in that setting, in those patients, one could argue that a trial of TMS may be appropriate – as opposed to introducing multiple medicines to recapture euthymia during pregnancy where the benefit is unclear and where more exposure is implied by having to do potentially multiple trials.
Other patients with new onset of depression during pregnancy who, for personal reasons, will not take an antidepressant or pursue other nonpharmacologic interventions will frequently ask about TMS. and the increased availability of TMS in the community in various centers – as opposed to previously where it was more restricted to large academic medical centers.
I think it is a time of excitement in reproductive psychiatry where we have a growing number of tools to treat perinatal depression – from medications to digital tools. These tools – either alone or in combination with medicines that we’ve been using for years – are able to afford women a greater number of choices with respect to the treatment of perinatal depression than was available even 5 years ago. That takes us closer to an ability to use interventions that truly combine patient wishes and “precision perinatal psychiatry,” where we can match effective therapies with the individual clinical presentations and wishes with which patients come to us.
Dr. Cohen is the director of the Ammon-Pinizzotto Center for Women’s Mental Health at Massachusetts General Hospital in Boston, which provides information resources and conducts clinical care and research in reproductive mental health. He has been a consultant to manufacturers of psychiatric medications. Email Dr. Cohen at obnews@mdedge.com.