Psych CASC / OSCE · Psychopharmacology — ketamine and esketamine
Explaining esketamine for TRD and safety rules (CASC)
CASC-style communication station: shared decision on esketamine after failed antidepressants, supervised dosing, observation, realistic benefits and risks, and ECT comparison.
On this page & tools
Target exams
Station instructions (candidate)
You have 7 minutes. Explain why esketamine is being considered after multiple adequate antidepressant failures, how supervised clinic dosing works (not take-home), what happens in the observation period, common short-term effects (dissociation, nausea, blood-pressure rise), and how this differs from recreational ketamine harm. Compare with ECT using ELEKT-D-level honesty for nonpsychotic TRD without declaring ECT obsolete. Do not guarantee cure. Do not minimise addiction/diversion concerns — explain clinic controls.[1][2][3][4][5]
Marking domains
Empathy and agenda setting; accurate plain-language TRD rationale; clear supervised-dosing rules; BP/observation explanation; balanced AE and misuse discussion; realistic timeline (induction then possible maintenance); ECT comparison without false dichotomy; collaborative plan and written information/crisis contacts.[1][2][3][4][5]
Model communication map
- Open: thank them; check understanding of why previous antidepressants failed; name shared goals (mood lift, function, safety).[5]
- Why now: several proper medicine trials have not controlled depression; guidelines and trials support considering rapid-acting options such as esketamine in treatment-resistant depression, given with another oral antidepressant under supervision.[1][5]
- How it is given: in clinic only; typical adult doses are fixed device strengths (for example 56 or 84 mg); she stays for observation (about two hours) with blood-pressure checks; she should not drive until the next day after a treatment day.[1][5]
- What she may feel: floating/dream-like feelings, dizziness or nausea can happen and usually settle; we monitor and support through the session.[3]
- Misuse fears: recreational high-dose ketamine is different from supervised medical dosing; we do not send the regulated spray home; bladder problems are mainly linked to chronic heavy non-medical use — still we take symptoms seriously.[3][5]
- Staying well: if she responds, continuing treatment for a period can reduce relapse risk compared with stopping early — maintenance is part of the plan, not one miracle dose.[2]
- ECT: for nonpsychotic treatment-resistant depression, research comparing IV ketamine with ECT found ketamine was not worse on the main outcome in that trial; ECT remains very important, especially for psychotic depression or when ketamine is unsuitable — we decide together.[4]
- Close: questions, written info, crisis contacts, first booking, partner role in escort if needed.[5]
Common fails
- Offering take-home nasal spray "to save clinic time."[1][5]
- Guaranteeing permanent cure or zero addiction risk.[3][5]
- Terrifying them with bladder injury without distinguishing recreational misuse from supervised care.[3]
- Saying ECT is never needed after ELEKT-D.[4]
- Ignoring ongoing suicide safety planning if ideation has been present.[5]
References
- [1]Popova V, Daly EJ, Trivedi M, et al. Efficacy and Safety of Flexibly Dosed Esketamine Nasal Spray Combined With a Newly Initiated Oral Antidepressant in Treatment-Resistant Depression: A Randomized Double-Blind Active-Controlled Study. Am J Psychiatry, 2019.PMID 31109201
- [2]Daly EJ, Trivedi MH, Janik A, et al. Efficacy of Esketamine Nasal Spray Plus Oral Antidepressant Treatment for Relapse Prevention in Patients With Treatment-Resistant Depression: A Randomized Clinical Trial. JAMA Psychiatry, 2019.PMID 31166571
- [3]Short B, Fong J, Galvez V, et al. Side-effects associated with ketamine use in depression: a systematic review. Lancet Psychiatry, 2018.PMID 28757132
- [4]Anand A, Mathew SJ, Sanacora G, et al. Ketamine versus ECT for Nonpsychotic Treatment-Resistant Major Depression. N Engl J Med, 2023.PMID 37224232
- [5]McIntyre RS, Rosenblat JD, Nemeroff CB, et al. Synthesizing the Evidence for Ketamine and Esketamine in Treatment-Resistant Depression: An International Expert Opinion on the Available Evidence and Implementation. Am J Psychiatry, 2021.PMID 33726522