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American Society of Anesthesiologists (ASA) categories (I–V) of the 23 foals included into the study.
| Group | ASA category | ||||
|---|---|---|---|---|---|
| I | II | III | IV | V | |
| LIDO (n=) | 0 | 6 | 4 | 1 | 1 |
| HC (n=) | 0 | 3 | 5 | 3 | 0 |
| Total (n=) | 0 | 11 | 7 | 4 | 1 |
The foals underwent general anesthesia, and lidocaine was administered intraoperatively in the LIDO group but not in the HC group.
