Ask Pramod Pilot: Sedative Drug Overdose

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Ask Pramod Pilot: Sedative Drug Overdose

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🎞️ Episode Synopsis (AI)Shreyas launches Ask Pramod, a new series under The Critical Debrief in which we walk through Pramod's research and discuss clinical application. In this first episode we discuss sedative drug overdose and evaluate if there are features of the early clinical assessment that can reliably predict the outcome?Keen to learn more from Pramod? Pre-order his new book "Clinical Examination in Critical Care Medicine" - a gamechanger for teaching clinical assessment skills in the critical care disciplines! All proceeds go to our emergency medicine education charity Network Five Emergency Medicine!⏱️ Episode Timestamps00:00 — Disclaimer and intro00:28 — Welcome — introducing the Ask Pramod series00:50 — The paper: why the question, the cohort, and the findings05:51 — Interpreting the pH 7.20 threshold08:49 — The NICO trial, the six-hour observation strategy, and Australian practice16:38 — At the bedside: airway mechanics, blood gases and drug factors20:51 — Next steps, and sign-off📚 References & Resources (in order of discussion)Chandru P, Schriber K, Brasted HBF, Butler E, Gunja N (2026) — Risk Factors Associated with Deterioration in Sedative Drug Overdose. Journal of Medical Toxicology. 2026;22(2):296–304.🔗 doi.org/10.1007/s13181-026-01120-0⏱️ ~00:50The paper under discussion. Retrospective cohort of 374 patients referred to a district toxicology service with suspected sedative overdose, November 2022 – November 2023. Common agents: benzodiazepines 32.1%, opioids 29.1%, GHB 20.6%. In-hospital complications 35.8%, ICU admission 17.9%, intubation 13.6%. ICU admission independently associated with lower venous pH and non-benzodiazepine GABA-ergic ingestion (adjusted OR 3.35, p = 0.04); in-hospital complications with opioid ingestion (adjusted OR 3.81, p < 0.001) and lower GCS. Modelled probability of intubation rose from 8% at pH 7.35 to 66% at pH 7.20. PMID 41792544.Agency for Clinical Innovation, Emergency Care Institute — The Australian and New Zealand Emergency Department Airway Registry (ANZEDAR).🔗 ACI Emergency Care Institute — Airway Registry⏱️ ~01:32The multicentre ED intubation registry referred to on air. Collects indication for intubation, first-pass success and complication rates across Australian and New Zealand EDs. Note: the specific proportion of ED intubations attributable to poisoning quoted in the discussion could not be verified against a published registry output and should be treated as the speaker’s recollection.Freund Y, Viglino D, Cachanado M, et al. (2023) — Effect of Noninvasive Airway Management of Comatose Patients With Acute Poisoning: A Randomized Clinical Trial (NICO). JAMA. 2023;330(23):2267–2274.🔗 doi.org/10.1001/jama.2023.24391⏱️ ~08:49The French trial discussed. Multicentre randomised trial across 20 emergency departments and 1 ICU, comatose patients with suspected acute poisoning and GCS < 9, May 2021 – April 2023. 225 patients (mean age 33); intubation 16% in the conservative arm vs 58% with routine practice; no in-hospital deaths. Primary outcome was a hierarchical composite of in-hospital death and ICU and hospital length of stay, favouring the conservative strategy (win ratio 1.85, 95% CI 1.33–2.58). Two corrections to the on-air description: this was a superiority trial using a win-ratio composite, not a non-inferiority study; and alcohol was the implicated toxin in 67% of cases, higher than the 40–50% recalled. The trial also excluded single-agent opioid and benzodiazepine ingestions, which strengthens rather than weakens the generalisability argument made in the episode.Pellatt RAF, Isoardi K, Keijzers G (2023) — Intubation for patients with overdose: Time to move on from the Glasgow Coma Scale. Emergency Medicine Australasia. 2023;35(4):702–705.🔗 doi.org/10.1111/1742-6723.14254⏱️ ~10:28The Emergency Medicine Australasia piece credited with prompting the study. Authors are from Gold Coast University Hospital, LifeFlight Retrieval Medicine and Princess Alexandra Hospital; Katherine Isoardi is a clinical toxicologist. It is an Opinion article rather than a letter to the editor. It proposes observation where toxicity is suspected to be short-lived — under 6 hours, or 8–12 hours depending on setting and resources — with airway reassessment if there is deterioration or coma persists beyond 6 hours. Note: the article text does not state an explicit pH 7.20 cutoff as a red flag; the speaker hedged on this point on air and it should not be attributed to this paper.Background reading (not cited by name on air)Schaffer AL, Busingye D, Chidwick K, Brett J, Blogg S (2021) — Pregabalin prescribing patterns in Australian general practice, 2012–2018: a cross-sectional study. BJGP Open. 2021;5(1). doi.org/10.3399/bjgpopen20X101120Context for the PBS listing point raised in the episode: pregabalin was subsidised on the PBS for neuropathic pain in 2013, after which ...

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