Airways ultrasound in predicting difficult face mask ventilation

Area of Science:

• Anesthesiology
• Medical Imaging
• Airway Management

Background:

• Difficult mask ventilation poses a significant risk during surgery and critical care.
• Current clinical tests for predicting difficult mask ventilation have limited sensitivity.
• Preoperative assessment of airway characteristics is crucial for patient safety.

Purpose of the Study:

• To determine if preoperative upper airway ultrasound measurements can predict difficult face mask ventilation.
• To identify clinical characteristics differentiating patients with difficult mask ventilation.

Main Methods:

• Prospective observational study of 250 adult patients undergoing elective gastrointestinal surgery.
• Preoperative ultrasound assessment of airway parameters including hyomental distance (DIM) and tongue base thickness (SBL).
• Standardized ultrasound protocol and measurements were applied.

Main Results:

• Tongue base thickness (SBL) above 50 mm predicted difficult mask ventilation in both curarized and non-curarized patients.
• Hyomental distance with head hyperextension and mandible subluxation (DIMs) was a predictive parameter in curarized patients.

Conclusions:

• Upper airway ultrasound shows promise as a tool for predicting difficult mask ventilation.
• Further research is needed to validate these ultrasound parameters and correlate them with clinical findings.