| Grade | Criteria |
|---|---|
| Grade 1 | Poor muscle relaxation, coughing and limb movement, difficult intubation |
| Grade 2 | Moderate muscle relaxation, coughing, intubation possible |
| Grade 3 | Good muscle relaxation, slight glottic movement, no hindrance to intubation |
| Grade 4 | Complete muscle relaxation, easy intubation, no reaction |
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