Airway management in obese patient

Area of Science:

• Anesthesiology
• Critical Care Medicine
• Pulmonology

Background:

• Obesity presents unique airway management challenges due to anatomical and physiological factors.
• Increased risk of difficult mask ventilation (DMV) and difficult tracheal intubation (DTI) in obese patients.
• Standard airway assessments should be augmented with obesity-specific predictors like neck circumference and high BMI.

Purpose of the Study:

• To outline strategies for effective airway management in obese patients.
• To emphasize the critical role of oxygenation throughout the perioperative period.
• To provide guidance on selecting appropriate techniques for ventilation and intubation.

Main Methods:

• Systematic assessment for DMV and DTI risk factors.
• Mandatory preoxygenation using a 25° head-up position.
• Consideration of non-invasive positive pressure ventilation and PEEP to prevent desaturation and atelectasis.
• Selection of anesthesia technique, oxygenation devices, and intubation methods based on patient status.
• Implementation of a predefined strategy for unexpected difficult airways, prioritizing oxygenation with supraglottic devices or ILMA.
• Extubation strategy involving an awake patient, no residual paralysis, and a 25° head-up position.

Main Results:

• Preoxygenation in a head-up position improves gas exchange compared to supine.
• Non-invasive ventilation and PEEP help prevent early arterial oxygen desaturation and atelectasis.
• A structured approach to airway management, from preoxygenation to extubation, is crucial for obese patients.
• Fiberoptic intubation or videolaryngoscopy are key tools for managing difficult tracheal intubation.
• Supraglottic devices or ILMA are vital for oxygenation in unexpected difficult airway scenarios.

Conclusions:

• Effective airway management in obese patients hinges on prioritizing oxygenation and employing specific strategies.
• Preoperative assessment must include obesity-specific factors to anticipate and mitigate airway risks.
• Utilizing advanced airway devices and techniques, along with appropriate positioning, is essential for patient safety.
• A comprehensive plan addressing ventilation, intubation, and extubation is mandatory for successful outcomes.