The Simplified Airway Risk Index (SARI), or El-Ganzouri Risk Index (EGRI), is a multivariate risk score thought to estimate the risk of difficult tracheal intubation. The SARI score ranges from 0 to 12 points, where a higher number of points indicates a more difficult airway. A SARI score of 4 or above is thought to indicate a difficult intubation.[1] Seven parameters is used to calculate the SARI score: Mouth opening, thyromental distance, Mallampati score, movement of the neck, the ability to create an underbite, body weight and previous intubation history.[1]
Parameter | 0 points | 1 point | 2 points | |
---|---|---|---|---|
1 | Mouth opening | > 4 cm | <4 cm | |
2 | Thyromental Distance | >6.5 cm | 6 to 6.5 cm | <6 cm |
3 | Mallampati | I or II | III | IV |
4 | Neck movement | > 90° | 80 to 90° | < 80° |
5 | Underbite | Can protrude jaw | Cannot protrude jaw | |
6 | Body weight | < 90 kg | 90 to 110 kg | > 110 kg |
7 | Previous intubation history | No difficulty | Unsure or Unknown | Known difficulty |
Score ≥ 4 - Predictor of difficult intubation |