Long-term follow-up study of patients with refractory obsessive-compulsive disorder.

The authors prospectively followed patients with treatment-resistant obsessive-compulsive disorder (OCD). Between 1988 and 1995, 56 patients with a history of inadequate response to oral clomipramine received 14 infusions of intravenous clomipramine. The follow-up period ranged from 4 to 11 years after treatment. Of the 44 subjects interviewed at follow-up, 70.5% had current OCD and 29.5% had sub-threshold OCD. Almost half reported feeling much improved or very much improved compared to their state prior to treatment with intravenous clomipramine.