[A case of pregnant woman with severe obsessive-compulsive disorder successfully treated by modified-electroconvulsive therapy].

Obsessive-compulsive disorder (OCD) is rare psychiatric disorder during pregnancy, and is often therapy-resistant. We report a 36-year-old pregnant woman with severe obsessive-compulsive disorder successfully treated by modified-electroconvulsive therapy. During the pregnancy, severe mysophobia and compulsive washing appeared, so severely that she was unable to lie down, endangering the life of the fetus. Since the pharmacotherapy was ineffective, modified electroconvulsive therapy (m-ECT) was performed in cooperation with the obstetrician and the anesthesiologist, along with monitored cardiotocography throughout the procedure. During the second therapy late deceleration on the fetal cardiotocogram occurred, but rapid intravenous administration of ritodrine led to the cessation of abnormal uterine contraction. Two courses of m-ECT markedly diminished her symptoms, and she delivered a healthy infant without complications. M-ECT can be an alternative treatment for pregnant patients with OCD.