Clinical Decision-Making and Process Complications During Anticipated Difficult Airway Management for Elective...

Area of Science:

• Anesthesiology
• Critical Care Medicine
• Airway Management

Background:

• Difficult airway management (DAM) poses significant challenges in anesthetic care.
• While most DAM episodes result in successful intubation, complications are frequent, necessitating complex clinical decisions.
• This study focuses on anticipated DAM in adults scheduled for nonemergent surgery.

Purpose of the Study:

• To prospectively observe clinical decisions during anticipated difficult airway management.
• To analyze the incidence of process complications associated with different airway management approaches.
• To describe outcomes including intubation success, number of attempts, and patient stability.

Main Methods:

• Prospective observation of 1295 anticipated DAM episodes in 1245 adults from 2009-2014.
• Trained observers recorded airway management decisions and process complications.
• Outcomes documented included intubation attempts, need for bag-mask ventilation (BMV), hypoxemia, and cardiovascular destabilization.

Main Results:

• All intubations were successful; no cases were canceled due to airway failure.
• 13% of patients were intubated awake, often with more difficult airway indicators and higher rates of hypoxemia (50%) and cardiovascular destabilization (29%).
• Patients intubated while anesthetized (87%) had a higher first-pass success rate (64%) but still experienced significant complications like hypoxemia (30%).

Conclusions:

• Airway management was universally successful, though process complications were more common than in routine cases.
• Awake intubation, while reserved for more challenging airways, demonstrated higher complication rates, indicating its inherent difficulty.
• Patients experiencing a failed anesthetized intubation attempt and difficult bag-mask ventilation faced a high risk of subsequent complications, particularly hypoxemia.