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Aoyama K, Tachi T, Kubo S, Koyama A, Watanabe M, Aoyama S, Noguchi Y, Tanaka K, Yasuda M, Shibata A, Mizui T, Teramachi H. Probable effects of polypharmacy and equivalent doses of psychotropic drugs on prevalence of adverse drug events among psychiatric inpatients in a general hospital in Japan. Hum Psychopharmacol 2024:e2890. [PMID: 38180732 DOI: 10.1002/hup.2890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 12/06/2023] [Accepted: 12/07/2023] [Indexed: 01/06/2024]
Abstract
OBJECTIVE In psychiatry, polypharmacy or high psychotropic drug doses increase adverse drug event (ADE) prevalence. However, the full relationship between polypharmacy and ADEs is unclear, and few studies have evaluated dose equivalents for psychotropic drugs for ADEs. Thus, we conducted a retrospective analysis to clarify the effects of polypharmacy and chlorpromazine (CP)-, diazepam (DAP)-, and imipramine- equivalent doses on all ADEs in inpatients. METHODS Psychiatric inpatients in a Japanese hospital from April 1, 2016 to March 31, 2018, were enrolled. ADE severity and causality were assessed. Multiple logistic regression analyses were performed to evaluate ADE risk factors. RESULTS Among 462 patients analyzed, out of 471 patients enrolled, 145 (31.4%) experienced ADEs. The causality assessment determined that "possible" was 96.5%. The most common ADEs were nervous system disorders (35%). Multiple logistic regression analyses indicated an increase in ADE prevalence with the number of drugs used (≥5; p = 0.026); CP-equivalent dose (p = 0.048); and endocrine, nutritional, and metabolic disorders (p = 0.045). DAP-equivalent dose; infectious and parasitic diseases; and injury, poisoning, and consequences of other external causes decreased ADE prevalence (p = 0.047, 0.022, and 0.021, respectively). CONCLUSIONS Avoiding polypharmacy in psychiatric inpatients and adjusting drug regimens to safe equivalent doses could reduce ADEs during hospitalization.
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Affiliation(s)
- Keisuke Aoyama
- Laboratory of Clinical Pharmacy, Gifu Pharmaceutical University, Gifu-shi, Gifu, Japan
| | - Tomoya Tachi
- Laboratory of Clinical Pharmacy, Gifu Pharmaceutical University, Gifu-shi, Gifu, Japan
- Department of Clinical Pharmacy, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya-shi, Aichi, Japan
- Laboratory of Pharmaceutical Health Care and Promotion, Gifu Pharmaceutical University, Gifu-shi, Gifu, Japan
- Department of Pharmacy, Gifu Municipal Hospital, Gifu-shi, Gifu, Japan
| | - Satoaki Kubo
- Laboratory of Clinical Pharmacy, Gifu Pharmaceutical University, Gifu-shi, Gifu, Japan
| | - Aisa Koyama
- Laboratory of Clinical Pharmacy, Gifu Pharmaceutical University, Gifu-shi, Gifu, Japan
| | - Mayuko Watanabe
- Department of Pharmacy, Gifu Municipal Hospital, Gifu-shi, Gifu, Japan
| | - Satoshi Aoyama
- Department of Pharmacy, Gifu Municipal Hospital, Gifu-shi, Gifu, Japan
| | - Yoshihiro Noguchi
- Laboratory of Clinical Pharmacy, Gifu Pharmaceutical University, Gifu-shi, Gifu, Japan
| | - Kazuhide Tanaka
- Laboratory of Pharmaceutical Health Care and Promotion, Gifu Pharmaceutical University, Gifu-shi, Gifu, Japan
- Department of Pharmacy, Gifu Municipal Hospital, Gifu-shi, Gifu, Japan
| | - Masahiro Yasuda
- Laboratory of Pharmaceutical Health Care and Promotion, Gifu Pharmaceutical University, Gifu-shi, Gifu, Japan
- Department of Pharmacy, Gifu Municipal Hospital, Gifu-shi, Gifu, Japan
| | - Akihiko Shibata
- Department of Psychiatry, Gifu Municipal Hospital, Gifu-shi, Gifu, Japan
| | - Takashi Mizui
- Laboratory of Clinical Pharmacy, Gifu Pharmaceutical University, Gifu-shi, Gifu, Japan
- Department of Pharmacy, Gifu Municipal Hospital, Gifu-shi, Gifu, Japan
| | - Hitomi Teramachi
- Laboratory of Clinical Pharmacy, Gifu Pharmaceutical University, Gifu-shi, Gifu, Japan
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Dias Alves M, Vion-Dury J. Iatrogenic encephalopathies are not so rare in psychiatry: A retrospective study about 5217 EEG examinations. Neurophysiol Clin 2023; 53:102897. [PMID: 37659137 DOI: 10.1016/j.neucli.2023.102897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 07/16/2023] [Accepted: 07/17/2023] [Indexed: 09/04/2023] Open
Abstract
OBJECTIVES Encephalopathy is a severe pathological process induced by multiple factors, which is typically associated with electroencephalogram (EEG) abnormalities. Early diagnosis, management, and treatment improve the patient's prognosis. Psychotropic treatments are a risk for drug-induced encephalopathies. In this study, the prevalence of encephalopathies in a psychiatric hospital has been studied for 5 years (2012 to 2016) using 5217 EEG records. METHODS EEGs were performed i) systematically on patient admission, ii) in response to inexplicable modifications of consciousness or behavior, or when metabolic anomalies occurred, and iii) to perform therapeutic monitoring in outpatient consultations. When encephalopathy was suspected, the clinical data (age, sex and concomitant treatment) and biological data (plasma levels of medications) were collected. RESULTS Encephalopathy was suspected in 189 patients. Following EEG examination, and monitoring of clinical course, encephalopathy was subsequently determined to be highly probable for 52 patients, (giving a prevalence of 1% per year), and low suspicion of encephalopathy in the other 137 patients. The suspicion of encephalopathy was made on both clinical (n=28) and non-clinical (n=24) signs. Involved drugs were mainly valproic acid (n=14), lithium (n=11) and clozapine (n=11) in the highly probable encephalopathy group. CONCLUSIONS Our study demonstrates the importance of EEG in the diagnosis and monitoring of encephalopathies in a psychiatric hospital. Clinical symptoms of encephalopathies are polymorphic and sometimes atypical. This diagnosis is underestimated in a context where behavior or consciousness disorders are generally not attributed to psychotropic drugs used in psychiatry.
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Affiliation(s)
- Manuel Dias Alves
- Aix Marseille Univ, CNRS, PRISM, Marseille, France; Unité Psychiatrique de Neuromodulation de Toulon (UPNT), Centre Hospitalier Intercommunal de Toulon La Seyne-sur-Mer, Toulon, France.
| | - Jean Vion-Dury
- Aix Marseille Univ, CNRS, PRISM, Marseille, France; Unité de Neurophysiologie, Psychophysiologie et Neurophénoménologie (UNPN), Pôle Universitaire de Psychiatrie, Hôpital Ste Marguerite, Marseille, France
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Qi Y, Liu G. Ultra-Performance Liquid Chromatography-Tandem Mass Spectrometry for Simultaneous Determination of Antipsychotic Drugs in Human Plasma and Its Application in Therapeutic Drug Monitoring. Drug Des Devel Ther 2021; 15:463-479. [PMID: 33613026 PMCID: PMC7887337 DOI: 10.2147/dddt.s290963] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 01/21/2021] [Indexed: 01/22/2023] Open
Abstract
PURPOSE We developed and validated an ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method for simultaneous therapeutic drug monitoring (TDM) and clinical pharmacokinetic antipsychotic drugs: clozapine (CLP), chlorpromazine (CPZ), risperidone (RPD), paliperidone (PLD), quetiapine (QTP;), aripiprazole (APZ), dehydroaripiprazole (DAP), olanzapine (OZP), ziprasidone (ZRD), and amisulpride (ASP). METHODS Analytes and internal standards (ISs) were separated using a Phenomenex phenyl-hexyl column (50.0 × 2.1 mm, 1.7 μm) with water containing 0.1% formic acid and 2 mM ammonium acetate, and methanol containing 0.1% formic acid and 2 mM ammonium acetate as the mobile phase. The antipsychotic drugs and ISs were extracted from 50 μL of plasma using acetonitrile. RESULTS The calibration ranges were 25.0-1500.0 ng/mL for CLP, CPZ, DAP, and QTP, 10.0-600.0 ng/mL for CPZ and ZRD, 2.5-150.0 ng/mL for RPD, 5.0-300.0 ng/mL for PLD and OZP, and 20.0-1200.0 ng/mL for ASP. Validation was carried out according to the guidelines for bioanalytical validation, including assessment of calibration curves, specificity, accuracy, precision, recovery, stability, dilution integrity, and matrix effect. All the results satisfied the requirements. CONCLUSION The results provided significant information to support future clinical TDM and rational drug use research. The proposed method also provided a simple, reliable, specific, and suitable technique for TDM and pharmacokinetic studies.
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Affiliation(s)
- Yingjie Qi
- Department of Pharmacy, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, Shenyang, 110042, Liaoning Province, People’s Republic of China
| | - Guangxuan Liu
- Department of Pharmacy, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, Shenyang, 110042, Liaoning Province, People’s Republic of China
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