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Updated: Jun 18, 2026

A Novel Rescue Technique for Difficult Intubation and Difficult Ventilation
Published on: January 17, 2011
Difficult mask ventilation.
Mohammad El-Orbany1, Harvey J Woehlck
1Department of Anesthesiology-West, Medical College of Wisconsin, Froedtert Memorial Lutheran Hospital, 9200 W Wisconsin Ave., Milwaukee, WI 53226, USA. elorbany@mcw.edu
Difficult mask ventilation (DMV) poses challenges due to varied definitions and multiple contributing factors. Recognizing predictors like obesity and Mallampati Class III/IV is crucial for effective airway management.
Area of Science:
- Anesthesiology
- Emergency Medicine
- Critical Care
Background:
- Mask ventilation is a fundamental airway management skill.
- Difficult mask ventilation (DMV) presents significant clinical challenges.
- Inconsistent definitions of DMV complicate research and communication.
Purpose of the Study:
- To review current knowledge on difficult mask ventilation (DMV).
- To identify factors contributing to DMV.
- To highlight predictors and management strategies for DMV.
Main Methods:
- Literature review of studies on difficult mask ventilation.
- Analysis of reported incidence and contributing factors.
- Identification of independent predictors for DMV.
Main Results:
- DMV incidence varies widely (0.08%–15%) due to differing definitions.
- Factors include technique-related and airway-related issues.
- Predictors include obesity, age >55, snoring, lack of teeth, beard, Mallampati III/IV, and abnormal mandibular protrusion.
Conclusions:
- Standardized definition for DMV is needed.
- Preoperative identification of predictors is essential.
- DMV increases risk of difficult tracheal intubation, requiring preparedness for management.
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