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EM TopicsMedical error and patient safety

EM · Medical error and patient safety

Medical error and patient safety in the emergency department

Also known as Open disclosure · Adverse event and near miss · Root cause analysis · Just culture · Incident reporting · Sentinel event · Never event

Medical error and patient safety in the emergency department — the systems approach via Reason's Swiss cheese model with the distinction between active failures (sharp end) and latent failures (blunt end), the differential of event categories (near miss, no-harm incident, adverse event, sentinel event, never event, negligence), the open disclosure protocol and the statutory duty of candour, incident reporting (what, when and how), the steps of root cause analysis, the common ED errors (diagnostic — missed MI, SAH and AAA; medication — dosing and allergy; procedural), just culture and the Marx algorithm distinguishing human error from reckless conduct, and the second victim. ACEM-primary, globally tagged.

high18 referencesUpdated 26 July 202631 min readVerification in progress

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Practise this topic8 MCQs with explanations

Target exams

ACEMFRCEMABEMFRCPCCCFPEMEBEEM

Red flags

  • Never alter, delete or back-date the medical record after an error — document contemporaneously, factually and completely; a clearly marked late addendum is permitted, tampering is a regulatory and criminal matter
  • Open disclosure must happen promptly after a harmful event — delay, denial or concealment breaches the duty of candour, worsens patient trust and increases litigation
  • An apology is not an admission of legal liability — acknowledging harm and saying sorry is the central element of open disclosure and is protected in most jurisdictions
  • Root cause analysis asks why, not who — stopping at the active failure (the clinician forgot) and never reaching the latent system cause guarantees the event repeats
  • A punitive response to honest error destroys reporting and learning — only reckless conduct warrants sanction, and the just-culture test decides which is which
  • The clinician involved in harm is a second victim at high risk of burnout, guilt and post-traumatic stress — peer support, not isolation, is the duty of the department
On this page

Related topics

  • Breaking bad news and communication in the emergency department — the SPIKES framework
  • Consent, capacity and the medico-legal framework in the emergency department
  • Patient disposition and safety-netting in the emergency department
  • Acute coronary syndromes (STEMI, NSTEMI and unstable angina)
  • Subarachnoid haemorrhage
  • Abdominal aortic aneurysm (ruptured and intact)
Study tools

Your progress

Saved on this device.

Practise this topic8 MCQs with explanations

Target exams

ACEMFRCEMABEMFRCPCCCFPEMEBEEM

Red flags

  • Never alter, delete or back-date the medical record after an error — document contemporaneously, factually and completely; a clearly marked late addendum is permitted, tampering is a regulatory and criminal matter
  • Open disclosure must happen promptly after a harmful event — delay, denial or concealment breaches the duty of candour, worsens patient trust and increases litigation
  • An apology is not an admission of legal liability — acknowledging harm and saying sorry is the central element of open disclosure and is protected in most jurisdictions
  • Root cause analysis asks why, not who — stopping at the active failure (the clinician forgot) and never reaching the latent system cause guarantees the event repeats
  • A punitive response to honest error destroys reporting and learning — only reckless conduct warrants sanction, and the just-culture test decides which is which
  • The clinician involved in harm is a second victim at high risk of burnout, guilt and post-traumatic stress — peer support, not isolation, is the duty of the department
The one-line answer

Medical error is a systems failure, not a character flaw. Reason's Swiss cheese model aligns an active failure at the sharp end with latent blunt-end holes, and the response is engineered defence plus honest disclosure — OPEN disclosure under the statutory duty of candour, FLOWEDS root cause analysis that asks why not who, and a JUST culture that consoles honest error, coaches at-risk drift and sanctions only true recklessness, all while supporting the second victim the event creates.[1]

Meet the patient

A 72-year-old man with chest pain is prescribed morphine 1 mg intravenously. The resident draws up and gives morphine 10 mg — a ten-fold error — and within minutes the respiratory rate falls to 6 and the saturation to 88 per cent on room air. Naloxone 0.4 mg intravenously at the bedside reverses it, and the patient is stable on the monitor.[1][15]

The reversal is the easy part. The next forty-eight hours hold the real examination: treat the patient, preserve the ampoule, document factually, report within the shift, disclose openly, analyse the system, apply just culture, and support the clinician who made the error. Hold those eight duties and the whole topic arranges itself around them.[1]

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References18ShowHide
  1. [1]Makary MA, Daniel M. Medical error-the third leading cause of death in the US BMJ, 2016.PMID 27143499
  2. [2]Gallagher TH, Waterman AD, Ebers AG, Fraser VJ, Levinson W. Patients' and physicians' attitudes regarding the disclosure of medical errors JAMA, 2003.PMID 12597752
  3. [3]Kachalia A, Sands K, Niel MV, et al. Effects Of A Communication-And-Resolution Program On Hospitals' Malpractice Claims And Costs Health Aff (Millwood), 2018.PMID 30395501
  4. [4]Grenon V, Szymonifka J, Adler-Milstein J, Ross J, Sarkar U. Factors Associated With Diagnostic Error: An Analysis of Closed Medical Malpractice Claims J Patient Saf, 2023.PMID 36631023
  5. [5]Ong TSK, Goh CN, Tan EKYE, Sivanathan KA, Tang ASP, Tan HK, Ng QX. Second Victim Syndrome Among Healthcare Professionals: A Systematic Review of Interventions and Outcomes J Healthc Leadersh, 2025.PMID 40485771
  6. [6]Bates DW, Leape LL, Cullen DJ, Laird N, Petersen LA, Teich JM, Burdick E, Hickey M, Kleefield S, Shea B, Vander Vliet M, Seger DL. Effect of computerized physician order entry and a team intervention on prevention of serious medication errors JAMA, 1998.PMID 9794308
  7. [7]Poon EG, Keohane CA, Yoon CS, et al. Effect of bar-code technology on the safety of medication administration N Engl J Med, 2010.PMID 20445181
  8. [8]Haynes AB, Weiser TG, Berry WR, Lipsitz SR, Breizat AH, Dellinger EP, Herbosa T, Joseph S, Kibatala PL, Lapitan MC, Merry AF, Moorthy K, Reznick RK, Taylor B, Gawande AA. A surgical safety checklist to reduce morbidity and mortality in a global population N Engl J Med, 2009.PMID 19144931
  9. [9]Starmer AJ, Spector ND, Srivastava R, et al. Changes in medical errors after implementation of a handoff program N Engl J Med, 2014.PMID 25372088
  10. [10]Wu AW. Medical error: the second victim. The doctor who makes the mistake needs help too BMJ, 2000.PMID 10720336
  11. [11]Winters B, Custer J, Galvagno SM Jr, Colantuoni E, Kapoor SG, Lee H, Goode V, Robinson K, Nakhasi A, Pronovost P, Newman-Toker D. Diagnostic errors in the intensive care unit: a systematic review of autopsy studies BMJ Qual Saf, 2012.PMID 22822241
  12. [12]Scott SD, et al. The natural history of recovery for the healthcare provider 'second victim' after adverse patient events. Qual Saf Health Care, 2009.PMID 19812092
  13. [13]Naya K, et al. Second victim syndrome in intensive care unit healthcare workers: A systematic review and meta-analysis on types, prevalence, risk factors, and recovery time. PLoS One, 2023.PMID 37788270
  14. [14]Rocca B, et al. Antidotes for Anticoagulation Reversal. N Engl J Med, 2026.PMID 42269153
  15. [15]Gonzalez Utrilla M, et al. Naloxone dosing in the era of synthetic opioids: Applying the Goldilocks principle. Addiction, 2025.PMID 40197810
  16. [16]Cardona V, et al. World allergy organization anaphylaxis guidance 2020. World Allergy Organ J, 2020.PMID 33204386
  17. [17]Robinson D, et al. Updated recommendations for warfarin reversal in the setting of four-factor prothrombin complex concentrate. Med J Aust, 2025.PMID 39586827
  18. [18]Vohra V, et al. Low risk of adverse events associated with flumazenil administration: a retrospective poison center analysis of acutely poisoned patients. Clin Toxicol (Phila), 2025.PMID 40586943

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Related topics

  • Breaking bad news and communication in the emergency department — the SPIKES framework
  • Consent, capacity and the medico-legal framework in the emergency department
  • Patient disposition and safety-netting in the emergency department
  • Acute coronary syndromes (STEMI, NSTEMI and unstable angina)
  • Subarachnoid haemorrhage
  • Abdominal aortic aneurysm (ruptured and intact)