Analysis of risk factors for antipsychotic-resistant schizophrenia in young patients – a retrospective analysis
Journal Title: Revista de Medicină Militară - Year 2018, Vol 0, Issue 1
Abstract
Treatment resistant schizophrenia (TRS) is a severely disabling disorder, which decreases dramatically the quality of life and overall functionality, while it increases the rate of hospital admissions and overall healthcare costs. The main objective of this research was to evaluate the risk factors for TRS in a group of patients based on a retrospective analysis. The secondary objective was to design an algorithm for initial evaluation in patients with schizophrenia, in order to detect the candidates at risk for developing TRS. Medical charts and consultation records of all patients aged between 18 and 30, diagnosed with TRS, evaluated during 1-year in our department, were selected for analysis. The most significant risk factors for TRS found in univariate model were younger age at schizophrenia onset, male gender, living in rural areas, co-morbid drug dependence, lower therapeutic adherence, and premorbid personality disorder. Marginally significant were higher Positive and Negative Syndrome Scale (PANSS) scores at previous admissions, higher scores on PANSS negative symptoms sub-scale, and lower educational background. In the multivariate model, TRS was still significantly predicted (p<0.05) by younger age at the disease onset, addictive co-morbidity, and lower therapeutic adherence. An algorithm based on these risk factors is suggested, based on (a) structured PANSS evaluation using SCI-PANSS and Informant Questionnaire for PANSS, (b) a scale for the detection of co-morbid drug dependence (i.e. Inventory of Drug Taking Situations, IDTS), (c) an interview for detecting premorbid personality disorders (i.e. Structured Clinical Interview for DSM IV – Axis II Disorders, SCID-II), and (d) Treatment Satisfaction Questionnaire for Medication (TSQM) for therapeutic adherence monitoring. Also, the inclusion of several pharmacogenetic parameters (at least CYP450 2D6 panel for detection of poor/ultrarapid metabolizers) could be useful when establishing an adequate therapeutic management, and may help in decreasing the rate of nonresponse due to variations in antipsychotics plasma levels
Authors and Affiliations
Octavian Vasiliu, Daniel Vasile, Andreea Fainarea, Mihaela Patrascu, Elena Morariu, Raluca Manolache, Iulia Alexandru, Flavius Androne
Keywords
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