Skip to main content

Table 3 Simplified Airway Risk Index (SARI)

From: Neuroplasticity induced by general anaesthesia: study protocol for a randomised cross-over clinical trial exploring the effects of sevoflurane and propofol on the brain – A 3-T magnetic resonance imaging study of healthy volunteers

Parameter 0 Points 1 Point 2 Points
1. Mouth opening > 4 cm < 4 cm
2. Thyromental distance > 6.5 cm 6–6.5 cm < 6.5 cm
3. Mallampati class I or II III IV
4. Neck movement > 90° 80–90° < 80°
5. Underbite Can protrude jaw Cannot protrude jaw
6. Body weight < 90 kg 90–110 kg > 110 kg
7. Previous intubation history No difficulty Unsure or unknown Known difficulty
Total score ≥ 4 predicts difficult intubation