Pre-Operative Assessment Includes Cannabis Use History
Placeholder: routine pre-op screening should ask about cannabis use directly.
- ~18%: US adult past-month use (placeholder stat)
- ~1 in 10: Surgical patients using (placeholder stat)
- Yes: Ask directly (reduce stigma, improve accuracy)
- Standardized: Screening tool (placeholder note)
Why disclosure matters
Placeholder: cannabis use affects anesthesia planning across multiple systems.
Placeholder: nonjudgmental questioning improves disclosure rates.
Placeholder: history includes frequency, route, and recency of use.
Regular Cannabis Use and Anesthetic Cross-Tolerance
Placeholder: chronic THC exposure can raise anesthetic dose requirements.
- ~up to 2x: Propofol dose increase (placeholder stat)
- Higher: Opioid requirement (placeholder stat)
- CB1 receptor: Mechanism (placeholder note)
- Slow, monitored: Titration approach (placeholder note)
Dose adjustment considerations
Placeholder: cross-tolerance may require higher induction and maintenance doses.
Placeholder: titrate to effect rather than fixed weight-based dosing.
Placeholder: heavy users show the largest dose shifts.
Airway Hyperreactivity in Chronic Cannabis Smokers
Placeholder: smoked cannabis is linked to airway irritation and reactivity.
- Elevated: Bronchitis symptoms (placeholder stat)
- Increased: Laryngospasm risk (placeholder stat)
- Smoked > edible: Route matters (placeholder note)
- Deeper anesthesia: Airway plan (before instrumentation)
Intubation planning
Placeholder: chronic smoke exposure irritates airway lining.
Placeholder: consider deeper plane before laryngoscopy.
Placeholder: watch for cough, bronchospasm, secretions.
Acute Cannabis Use and Cardiovascular Effects
Placeholder: recent use can cause tachycardia and blood pressure swings.
- +20–50 bpm: Heart rate change (placeholder stat)
- Possible: Orthostatic effect (placeholder stat)
- With vasopressors: Interaction risk (placeholder note)
- Delay elective case: Timing recommendation (if acutely intoxicated)
Hemodynamic monitoring
Placeholder: acute intoxication destabilizes heart rate and pressure.
Placeholder: chronic use may instead blunt sympathetic response.
Placeholder: closer monitoring reduces surprises intraoperatively.
Disclosure and Planning Reduce Perioperative Complications
Placeholder: open disclosure lets the team adjust dosing and timing.
- Lower: Complication rate (with disclosure, placeholder)
- Reduced: Dose surprises (placeholder stat)
- Avoid same-day use: Recommended timing (placeholder note)
- Documented plan: Team communication (placeholder note)
Putting it together
Placeholder: dose adjustment, airway readiness, and CV monitoring combine.
Placeholder: undisclosed use raises risk of intraoperative surprises.
Placeholder: shared decision-making improves safety margins.
Placeholder key insight: disclosed, planned cases trend toward smoother courses.