## Factors Affecting Mallampati Grade The Mallampati classification can be dynamic and may be influenced by patient factors that alter oropharyngeal anatomy or visualization. ### Factors That INCREASE Mallampati Grade (Worsen Visualization) | Factor | Mechanism | |--------|----------| | Obesity & ↑ neck circumference | Increased soft tissue bulk, pharyngeal crowding | | Pregnancy & peripartum | Airway edema, mucosal engorgement, weight gain | | Enlarged tonsils | Direct obstruction of oropharyngeal view | | Macroglossia | Tongue enlargement reduces visible structures | | Oropharyngeal edema | Swelling narrows pharyngeal space | | Reduced mouth opening | Limits ability to visualize structures | | Neck flexion | Reduces extension, worsens visualization | **Key Point:** Neck EXTENSION (not flexion) improves airway visualization and may DECREASE (improve) Mallampati grade. Conversely, neck FLEXION and reduced cervical mobility INCREASE (worsen) the grade. ### Why Option 2 is Wrong Neck extension and increased cervical spine mobility IMPROVE visualization of oropharyngeal structures and would DECREASE (improve) the Mallampati grade, not increase it. This is the opposite of what the question asks. **Clinical Pearl:** During pre-anesthetic assessment, ask the patient to extend the neck maximally while assessing Mallampati grade — this optimizes visualization and may reveal a better-than-expected airway. **High-Yield:** Mallampati grade is NOT fixed; it can change with patient positioning, neck extension, and resolution of edema. Always assess in the position of intended intubation.
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