| Animal | T (°C) | Rectal temperature at surgery |
| BW (kg) | Body weight | BW1 | BW at surgery | |
| BW2 | BW 22 d after surgery |
| BMP | Breaths per minute | BMP1 | BPM pre-surgery |
| BMP2 | BPM during surgery |
| BMP3 | BPM post-surgery |
| F (mg/dL) | Serum fibrinogen | F1 | F at surgery |
| F2 | F 6 d after surgery |
| Technical | t (min) | Duration of surgery |
| EA (mL) | Volume of extracted air |
| VS (1–4) | Visualization scope | 1 | Excellent | Complete view of cranial lobes and between |
| 2 | Optimal | Complete view of cranial lobes |
| 3 | Valid | Peripheral view of cranial lobes |
| 4 | Invalid | No view of cranial lobes |
| IQD (1–3) | Image quality descriptionc | 1 | Excellent | |
| 2 | Moderate |
| 3 | Bad |
| Safety | PS (1–4) | Pain Score | 1 | None | No sign of pain |
| 2 | Slight | 1–3 vocalizations |
| 3 | Moderate | >3 vocalizations |
| 4 | High | >3 vocalizations and kicking |
| RT (1–4) | Recovery time | 1 | Immediate | eating, drinking and/or ruminating during the first 15 min after surgery |
| 2 | Fast | = RT 1 by 15–30 min after surgery |
| 3 | Medium | = RT 1 by 30–60 min after surgery |
| 4 | Late | = RT 1 at >60 min after surgery |
| RL (1–3) | Risk of lung perforation or laceration | 1 | Low | >1 cm between cannula and lung |
| 2 | Medium | ~1 cm between cannula and lung |
| 3 | High | <1 cm between cannula and lung |
| IOC | Intraoperative complications | | Description |
| RC (%) | Risk of threatening passive collapse | | Yes or no |
| Diagnostic | OBRD-L | observed BRD lesions | Adhesions | | Yes or no |
| Edema | | Yes or no |
| Emphysema | | Yes or no |
| Acute lesions | | Yes or no |
| Chronic lesions | | Yes or no |
| Abscess | | Yes or no |
| Others | | |