Psych · Psychopharmacology — antipsychotics
Antipsychotics
Also known as Neuroleptics · Atypical antipsychotics · Second-generation antipsychotics · Long-acting injectable antipsychotics · LAI · Dopamine antagonists
Exam-exhaustive fellowship pharmacology of antipsychotics — receptor maps, FGA vs SGA evidence (CATIE, CUtLASS, EUFEST, Leucht NMA), dosing, metabolic and EPS monitoring, LAIs, switching, TRRIP pathway to clozapine, acute adverse-effect emergencies. FRANZCP-primary, globally tagged.
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Target exams
Red flags
- Fever, rigidity, autonomic instability on an antipsychotic — treat as possible NMS: stop the drug, resuscitate, escalate
- New fever, chest pain or unexplained tachycardia early in clozapine — myocarditis until proven otherwise
- Acute dystonia with airway threat — urgent parenteral anticholinergic
- Marked QTc prolongation or TdP risk factors — review drug, electrolytes, ECG, cardiology input
- Two adequate failed antipsychotic trials with adherence confirmed — do not delay clozapine assessment
- IM olanzapine plus parenteral benzodiazepine — dangerous combination; avoid
Meet the patient
A 22-year-old apprentice, nine months into a first episode of psychosis, is back on the ward. He has now had risperidone and then olanzapine, both stopped early — the first for stiffness he called "feeling like a robot", the second because he gained fourteen kilos and could not face it. The plan on the whiteboard reads: "add amisulpride."[1][4]
Two questions are hiding in that sentence, and examiners ask both. Were those trials ever adequate? And if they were, why is the next word not "clozapine"?[4][6][12]
This topic is the drug-class spine that schizophrenia, bipolar mania, agitation and clozapine all plug into. Examiners want pathway maps, occupancy concepts, agent-level doses, monitoring schedules and the TRRIP door — never brand slogans.[1][4][6]
References16ShowHide
- [1]Lieberman JA, Stroup TS, McEvoy JP, et al. Effectiveness of antipsychotic drugs in patients with chronic schizophrenia N Engl J Med, 2005.PMID 16172203
- [2]Jones PB, Barnes TR, Davies L, et al. Randomized controlled trial of the effect on Quality of Life of second- vs first-generation antipsychotic drugs in schizophrenia: Cost Utility of the Latest Antipsychotic Drugs in Schizophrenia Study (CUtLASS 1) Arch Gen Psychiatry, 2006.PMID 17015810
- [3]Kahn RS, Fleischhacker WW, Boter H, et al. Effectiveness of antipsychotic drugs in first-episode schizophrenia and schizophreniform disorder: an open randomised clinical trial Lancet, 2008.PMID 18374841
- [4]Leucht S, Cipriani A, Spineli L, et al. Comparative efficacy and tolerability of 15 antipsychotic drugs in schizophrenia: a multiple-treatments meta-analysis Lancet, 2013.PMID 23810019
- [5]Kane JM, Honigfeld G, Singer J, et al. Clozapine in treatment-resistant schizophrenics Psychopharmacol Bull, 1988.PMID 3290950
- [6]Howes OD, McCutcheon R, Agid O, et al. Treatment-Resistant Schizophrenia: Treatment Response and Resistance in Psychosis (TRRIP) Working Group Consensus Guidelines on Diagnosis and Terminology Am J Psychiatry, 2017.PMID 27919182
- [7]Howes OD, Kapur S The dopamine hypothesis of schizophrenia: version III--the final common pathway Schizophr Bull, 2009.PMID 19325164
- [8]Kane JM, Robinson DG, Schooler NR, et al. Comprehensive Versus Usual Community Care for First-Episode Psychosis: 2-Year Outcomes From the NIMH RAISE Early Treatment Program Am J Psychiatry, 2016.PMID 26481174
- [9]Tiihonen J, Lönnqvist J, Wahlbeck K, et al. 11-year follow-up of mortality in patients with schizophrenia: a population-based cohort study (FIN11 study) Lancet, 2009.PMID 19595447
- [10]Meltzer HY, Alphs L, Green AI, et al. Clozapine treatment for suicidality in schizophrenia: International Suicide Prevention Trial (InterSePT) Arch Gen Psychiatry, 2003.PMID 12511175
- [11]Leucht S, Leucht C, Huhn M, et al. Sixty Years of Placebo-Controlled Antipsychotic Drug Trials in Acute Schizophrenia: Systematic Review, Bayesian Meta-Analysis, and Meta-Regression of Efficacy Predictors Am J Psychiatry, 2017.PMID 28541090
- [12]Siskind D, Siskind V, Kisely S Clozapine Response Rates among People with Treatment-Resistant Schizophrenia: Data from a Systematic Review and Meta-Analysis Can J Psychiatry, 2017.PMID 28655284
- [13]Davis JM, Chen N, Glick ID A meta-analysis of the efficacy of second-generation antipsychotics Arch Gen Psychiatry, 2003.PMID 12796218
- [14]Bertelsen M, Jeppesen P, Petersen L, et al. Five-year follow-up of a randomized multicenter trial of intensive early intervention vs standard treatment for patients with a first episode of psychotic illness: the OPUS trial Arch Gen Psychiatry, 2008.PMID 18606949
- [15]Correll CU, Galling B, Pawar A, et al. Comparison of Early Intervention Services vs Treatment as Usual for Early-Phase Psychosis: A Systematic Review, Meta-analysis, and Meta-regression JAMA Psychiatry, 2018.PMID 29800949
- [16]Bighelli I, Rodolico A, García-Mieres H, et al. Psychosocial and psychological interventions for relapse prevention in schizophrenia: a systematic review and network meta-analysis Lancet Psychiatry, 2021.PMID 34653393