ABSTRACT
Background: Clozapine has well-documented inter-ethnic variations in pharmacokinetics. There is a paucity of data about clozapine use and associated adverse events such as seizures, obsessive compulsive symptoms, neutropenia, and agranulocytosis, from India. Methods: This retrospective cohort study followed up 228 patients initiated on clozapine in a tertiary care referral center in India for an average of 10 years. We calculated incidence rates of new-onset seizures, new-onset obsessive compulsive symptoms, agranulocytosis, and neutropenia. We collected data on doses of clozapine used and serum assays and calculated concentration-to-dose (C/D) ratios. We also collected relevant clinical details about clozapine-induced seizures. Results: In the sample, 16.8% had new-onset seizures, 12.3% had new-onset OC symptoms, 2.7% had neutropenia, and 0.9% had agranulocytosis. The mean C/D ratio was 2.09 (SD = 1.8). Almost half (46.3%) of available serum assays were in the supra-therapeutic range. Seizures were associated with a higher clozapine dose at one year (OR = 1.003; 95%CI = 1.000-1.006; P value = 0.045) and the presence of positive psychotic symptoms at one year (OR = 4.214; 95%CI = 1.894-9.373; P < 0.001). Conclusion: Compared to existing literature, Indians have a higher rate of clozapine- related seizures and need lower doses to reach therapeutic serum levels.
ABSTRACT
Introduction: The available treatment options for patients with drug or treatment-resistant psychiatric disorders are limited. Maintenance electroconvulsive therapy (M-ECT) is an established option, but the literature available is limited. This study examined the utilization of M-ECT in a large tertiary care psychiatric facility, and its correlates with the socio-demographic and clinical profile of patients. Methods: A retrospective chart review was performed in a tertiary care psychiatry center based in semi-urban South India, and data was analyzed. Results: A total of 171 patients received ECT in the study period, of which only five patients were on M-ECT. These patients were diagnosed as treatment-resistant and were mostly suffering from schizophrenia. They were located less than 30 km from the hospital. They were on regular treatment but continued to have residual symptoms without functional recovery and required a high level of support from caregivers. Conclusion: Our study supports the effectiveness of M-ECT for the treatment of severe psychiatric disorders and highlights the profile of patients who have received this modality of treatment. It can be suggested with consideration of various psycho-social issues which seem to be related to adherence.
