정신분열병에 대한 리스페리돈의 효과 및 안정성(장기투여연구)

Abstract

Objectives : The purpose of this study was to evaluate the long-term efficacy and safety of risperidone in the treatment of Korean schizophrenic patients. Methods : This multicenter open label study included 116 schizophrenic patients drawn form 19 university hospitals. After a wash-out period of 1 week, the patients were treated with risperidone for 56 weeks and evaluated at 8 points : at baseline, and the 8th, 16th, 24th, 32th, 40th, 48th, 52th weeks of treatment. The dose was started at 2㎎ of risperidone on day 1, and increased to 4㎎ on day 2, and 6㎎ on day 3 - 7 and adjusted to a maximum of 16㎎/day according to the individual's clinical response. The psychiatric and neurological status of the patients was assessed by PANSS. CGI, and ESRS scales. Results : Eighty-seven(75%) of 116 patients completed the 56-week trial risperidone. Clinical improvement(as defined by a 20% of reduction in total PANSS score at end point) was shown by 92.0% of the patients. The mean dose of risperidone was 5.0㎎/day in the 56 week follow-up. PANSS total scores showed significantly improvements between consecutive two points at baseline, 8th, 16th, 24th, 32th, and 48th week of treatment. CGI scores showed significant reductions between consecutive two points at baseline, 8th, 16th, 24th, and 48th weeks of treatment. There PANSS factors(positive, negative, general) showed a significant improvement from the 8th week of treatment, and, after then, remained improved in the rest of the study period. ESRS showed to no significant change the 56 week trial. Laboratory parameters showed no signifiant changes during the course of treatment. Conclusion : This multicenter long-term open study suggests that risperidone is a antipsychotic drug with long term efficacy safely in the treatment of schizophrenic patients.