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Analysis of Adverse Events Associated With Adult Moderate Procedural Sedation Outside the Operating Room.

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Moderate sedation outside the operating room can lead to adverse events like oversedation and hypoxemia, particularly in older patients and women. Risk assessment should consider patient factors and procedure types to prevent complications.

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Area of Science:

  • Medical Safety
  • Anesthesiology
  • Patient Outcomes

Background:

  • Moderate sedation is frequently used for procedures outside the operating room.
  • Non-anesthesia professionals administer sedation, often using various drug combinations.
  • Limited data exist on risk stratification and patient outcomes for moderate sedation in adults.

Purpose of the Study:

  • To evaluate the types of adverse events linked to moderate sedation.
  • To examine the relationship between patient characteristics, procedure types, and adverse events.
  • To assess patient outcomes following sedation-related safety incidents.

Main Methods:

  • Retrospective review of 52 sedation safety incidents over 8 years at a tertiary care center.
  • Analysis of approximately 143,000 sedation cases.
  • Bivariate and multivariate analyses to identify links between event types, patient characteristics, and procedure details.

Main Results:

  • Oversedation causing apnea was the most frequent adverse event (57.7%).
  • Cardiology and gastroenterology procedures had high rates of oversedation, hypoxemia, and reversal agent use.
  • Advanced age, female sex, and higher BMI were associated with increased risks of specific adverse events, while patient harm was linked to age, BMI, comorbidities, sex, and procedure location.

Conclusions:

  • Patient characteristics such as age, sex, and body mass index influence sedation complication risks.
  • Procedure type, particularly in gastroenterology, is associated with increased patient harm.
  • Risk assessment for moderate sedation should integrate patient-specific factors and procedural context.