Psych · Specialty psychiatry — sleep medicine interface
Obstructive sleep apnoea and psychiatry
Also known as OSA · Obstructive sleep apnea · Sleep-disordered breathing · CPAP psychiatry · STOP-BANG · Apnoea-hypopnoea index · OSA depression
Exam-exhaustive fellowship reference on obstructive sleep apnoea at the psychiatry interface — ICSD-3/AASM severity, epidemiology, mood and cognitive comorbidity, STOP-BANG screening, PSG/HSAT pathways, CPAP first-line care with SAVE caveats, psychotropic airway and weight effects, benzodiazepine risk, driving safety, and special populations. FRANZCP-primary, globally tagged.
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Target exams
Red flags
- Witnessed apnoeas with cyanosis, acute hypercapnic failure, or cor pulmonale — medical emergency pathway, not outpatient psychiatry alone
- Excessive daytime sleepiness with near-miss or actual driving/machinery incidents — urgent fitness assessment and OSA work-up
- Treatment-resistant depression with obesity, loud snoring, and residual anergia — exclude OSA before endless antidepressant switches
- Benzodiazepine or opioid co-prescribing in untreated moderate–severe OSA — de-escalate sedatives and arrange urgent medical/sleep review
- Severe comorbid depression with suicidal ideation and unrefreshing sleep — treat risk and sleep pathology together
- Rapid weight gain on SGAs with new hypersomnolence — screen OSA and metabolic complications
Meet the patient
A 47-year-old with "treatment-resistant depression" has failed three antidepressants. He is obese, his wife reports he stops breathing then gasps at night, he falls asleep in the waiting room, and his PHQ-9 has not budged in a year. The last psychiatrist raised the mirtazapine.[6][7]
The whole topic hides in that waiting-room doze. The exam question he answers: "What did every clinician miss, and what is the first-line treatment that is not a tablet?" Untreated OSA produces the exact phenotype of residual MDD — anergia, irritability, cognitive slowing, unrefreshing sleep — and no amount of antidepressant titration fixes an airway that collapses nightly.[5][6][9]
References23ShowHide
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- [5]Peppard PE, Szklo-Coxe M, Hla KM, et al. Longitudinal association of sleep-related breathing disorder and depression Arch Intern Med, 2006.PMID 16983048
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- [14]Patil SP, Ayappa IA, Caples SM, et al. Treatment of Adult Obstructive Sleep Apnea With Positive Airway Pressure: An American Academy of Sleep Medicine Systematic Review, Meta-Analysis, and GRADE Assessment J Clin Sleep Med, 2019.PMID 30736888
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- [18]Wang SH, Chen WS, Tang SE, et al. Benzodiazepines Associated With Acute Respiratory Failure in Patients With Obstructive Sleep Apnea Front Pharmacol, 2018.PMID 30666205
- [19]Wichniak A, Wierzbicka A, Walęcka M, et al. Effects of Antidepressants on Sleep Curr Psychiatry Rep, 2017.PMID 28791566
- [20]Monti JM The effect of second-generation antipsychotic drugs on sleep parameters in patients with unipolar or bipolar disorder Sleep Med, 2016.PMID 27692282
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