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ethics
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Informed Consent for High-Risk Surgery

Material-risk disclosure, reasonable-person standard, emergency exception, and documentation

For high-risk surgery, informed consent means a documented conversation that discloses material risks a reasonable person would want to know (death, MI, stroke, paralysis), alternatives including no surgery, the surgeon's relevant experience, and the patient's voluntary competent agreement.

If you forget

Material risks a reasonable person would want to know — not just what you feel comfortable saying

Board trap
The examiner will ask: 'The patient signed the consent form at the pre-op clinic — are you covered?' Answer: the form is evidence of a conversation, not a substitute for it. If you didn't disclose a material risk (e.g., ~1% stroke, ~2% mortality), the form does not protect you, and you must conduct or re-conduct the consent discussion before induction.

Key numbers

  • Material risk threshold commonly cited: >1% serious complication OR any risk of death or permanent disability
  • ASA informed consent elements: risks, benefits, alternatives, and assessment of patient understanding
  • Documentation minimum: procedure, indication, risks discussed, alternatives discussed, patient questions, signature with date/time and witness
  • Pediatric assent: typically sought at age ≥7 years when developmentally appropriate
  • Emergency exception: immediate threat to life or limb + patient lacks decision-making capacity + no surrogate reachable in the time available
Reviewed Sep 15, 2026 for clinical accuracy by BoardsBridge Editorial Process

Uri Rozen, MD — Licensed Physician, Israel

Source guidelines: ASA Informed Consent 2022 · ACS Surgical Consent 2021 · ASA DNR Ethics 2023

Re-review cadence: 12 months from reviewed date.

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Related on BoardsBridge

Card ID: high-risk-surgery · Path: aba.ethics.informed-consent.high-risk-surgery

Educational reference only. Reviewed for clinical accuracy against current authoritative guidelines. Not a substitute for clinical judgment. See editorial process and the sitemap entry for this card.