TABLE 2.
Baseline Patient Characteristics
| Cohort A | Cohort B | |
|---|---|---|
| N = | 107 | 109 |
| Male | 50(47) | 57(52) |
| Mean Age | 55.5 | 54.6 |
| Admitted to ICU/MCU | 68(64) | 25(24) |
| Physical status | ||
| ASA 1 | 13(12) | 7(6) |
| ASA 2 | 73(68) | 71(65) |
| ASA 3 | 21(20) | 30(28) |
| ASA 4 | 0(0) | 1(1) |
| Procedure type | ||
| Intra-axial | 58(54) | 63(58) |
| Extra-axial | 30(28) | 30(23) |
| Open biopsy | 5(5) | 6(6) |
| Skull base | 11(10) | 9(8) |
| Open Cyst fenestration | 3(3) | 1(1) |
| IOM used | 18(17) | 8(7) |
Numbers are expressed as absolute values (percentage). ASA: American Society of Anaesthesiologists physical status classification, ICU: intensive care unit, IOM: intra-operative monitoring, MCU: medium care unit.