Regarding the Mallampati classification for airway assessment, all of the following statements are correct EXCEPT:

Question

Accepted Answer

B. Mallampati Class IV has the lowest risk of difficult intubation among all classes. ## Mallampati Classification Overview

The Mallampati score is a simple, non-invasive bedside test for predicting difficult intubation based on visualization of oropharyngeal structures.

### Classification Grades

| Class | Structures Visible | Difficult Intubation Risk |
|-------|-------------------|---------------------------|
| I | Soft palate, fauces, uvula, anterior & posterior tonsillar pillars | ~1–2% |
| II | Soft palate, fauces, uvula (partial) | ~5–13% |
| III | Soft palate, base of uvula only | ~11–15% |
| IV | Hard palate only (no soft palate visible) | ~50% |

**Key Point:** Mallampati Class IV represents the HIGHEST risk of difficult intubation, not the lowest. This class indicates severe oropharyngeal crowding and limited visualization of airway landmarks.

### Correct Assessment Technique

1. Patient seated upright (though some texts describe supine position for consistency)
2. Mouth opened maximally
3. Tongue protruded fully
4. Phonation of 'aah' (optional but improves visualization)
5. Assessment WITHOUT phonation light or tongue depressor

**Clinical Pearl:** A patient with Mallampati Class IV should raise high suspicion for difficult intubation and warrant additional airway assessment tools (thyromental distance, sternomental distance, neck mobility, inter-incisor distance).

**High-Yield:** The progression from Class I → IV correlates directly with increasing difficulty of intubation. Class IV is a RED FLAG for anticipated difficult airway.

### Why Option 3 is Wrong

Mallampati Class IV carries the HIGHEST (approximately 50%) difficult intubation rate, not the lowest. This is the most dangerous class and requires careful airway planning.

Answer

A. Mallampati Class I involves visualization of the soft palate, fauces, uvula, and anterior and posterior tonsillar pillars

Answer

C. The classification is performed with the patient in the supine position, tongue protruded maximally, and phonating 'aah'

Answer

D. Mallampati Class III is associated with a difficult intubation rate of approximately 5–13%

Regarding the Mallampati classification for airway assessment, all of the following statements are correct EXCEPT:

Explanation

Mallampati Classification Overview

Classification Grades

Correct Assessment Technique

Why Option 3 is Wrong

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Class	Structures Visible	Difficult Intubation Risk
I	Soft palate, fauces, uvula, anterior & posterior tonsillar pillars	~1–2%
II	Soft palate, fauces, uvula (partial)	~5–13%
III	Soft palate, base of uvula only	~11–15%
IV	Hard palate only (no soft palate visible)	~50%