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Surgical types.
| Surgical types, n (%) | Saline group (n = 17) | Phentolamine group (n = 18) | Phentolamine+lidocaine group (n = 20) | P value |
|---|---|---|---|---|
| Neurosurgery | 3 (17.65%) | 2 (11.11%) | 3 (15.00%) | 0.997 |
| Cardiac surgery | 9 (52.94%) | 9 (50.00%) | 10 (50.00%) | |
| General surgery | 3 (17.65%) | 4 (22.22%) | 3 (15.00%) | |
| Urinary surgery | 1 (5.88%) | 2 (11.11%) | 2 (10.00%) | |
| Others | 1 (5.88%) | 1 (5.56%) | 2 (10.00%) |
