[Correlation between oro and hypopharynx shape and position with endotracheal intubation difficulty]

Area of Science:

• Anesthesiology
• Airway Management
• Diagnostic Accuracy

Context:

• Predicting difficult endotracheal intubation is vital to prevent patient morbidity and mortality.
• Preoperative assessment of airway characteristics is essential for safe anesthetic practice.

Purpose:

• To evaluate the correlation between oropharyngeal/hypopharyngeal position, neck dimensions, and endotracheal intubation difficulty.
• To assess the diagnostic value of the Friedman Staging System in predicting difficult intubations.

Summary:

• A study of 500 patients found the Cormack-Lehane grade most strongly correlated with intubation difficulty, followed by Friedman palate position.
• Friedman palate position demonstrated higher sensitivity and predictive values than modified Mallampati classification.
• Cormack-Lehane grade showed the highest specificity and negative predictive value among the classifications studied.

Impact:

• The Friedman palate position is a more sensitive and valuable pre-anesthetic test for predicting difficult intubations.
• Incorporating Friedman palate position into multivariate models may enhance the accuracy of preoperative difficult airway assessment.