Table 1.
Criteria and grading scale used during visual laryngeal examinationa
| Laryngeal examination response | Score | Definition |
|---|---|---|
| Breathing score | ||
| 0 | No spontaneous respiration | |
| 1 | Shallow respiration, slow respiratory rate, weak attempt | |
| 2 | Moderate respiration, rate, and attempt | |
| 3 | Deep respiration, normal respiratory rate, strong attempt | |
| Laryngeal motion | ||
| 0 | Abnormal/no arytenoid movement | |
| 1 | Weak/inconsistent arytenoid movement | |
| 2 | Strong/consistent arytenoid movement | |
| Jaw tone | ||
| 0 | No jaw tone | |
| 1 | Slight jaw tone | |
| 2 | Moderate jaw tone | |
| 3 | Excessive jaw tone | |
| Laryngeal exposure | ||
| P | Poor | |
| M | Moderate | |
| E | Excellent | |
| Laryngospasm | ||
| 0 | Absent | |
| 1 | Present | |
| Swallowing | ||
| 0 | Absent | |
| 1 | Present |
a
Each dog was scored on the basis of the definition of that response provided.