Table 1.
Patient demographics, baseline characteristics, and results of the 41 patients. BSR, burst-suppression ratio; CNS disease, central nervous system disease, comprising a history of delirium, dementia, depression, seizures, psychiatric disorder, stroke, transient ischaemic attack, or other neurological disorders; PSI, patient state index™; TICS™, Telephone Interview of Cognitive Status instrument
| Variable | Postoperative delirium |
|
|---|---|---|
| Yes | No | |
| Total number | 7 | 34 |
| Age {yr; mean (sd) [range]} | 64 (9.62) [51–81] | 62 (8.47) [44–75] |
| Preoperative TICS™ {mean (sd) [range]} | 31.2 (4.85) [24.2–37.8] | 33.0 (2.90) [27.3–37.8] |
| Sex [% (n)] | ||
| Female | 42.86 (3) | 52.94 (18) |
| Male | 57.14 (4) | 47.06 (16) |
| Ethnicity [% (n)] | ||
| White | 85.71 (6) | 82.35 (28) |
| Not white | 14.29 (1) | 17.65 (6) |
| ASA classification [% (n)] | ||
| II (mild systemic disease) | 42.86 (3) | 44.12 (15) |
| III (severe systemic disease) | 57.14 (4) | 55.88 (19) |
| Surgery type [% (n)] | ||
| Spine | 57.14 (4) | 44.12 (15) |
| Other | 42.86 (3) | 55.88 (19) |
| History of CNS disease [% (n)] | ||
| Yes | 71.43 (5) | 61.76 (21) |
| No | 28.57 (2) | 38.24 (13) |
| Chronic opioids [% (n)] | ||
| Yes | 0 | 4 |
| No | 7 | 30 |
| Intraoperative PSI™ {median (sd)[range]} | 30.85 (9.27) [18.01–40.32] | 31.92 (10.85) |
| [7.22–55.49] | ||
| Intraoperative BSR {median (sd)[range]} | 4.29 (5.35) [0–14] | 3.94 (11.53) |
| [0–60] | ||
| Duration of surgery {h; median (sd)[range]} | 8.4 (2.99) [3.2–12.5] | 3.95 (2.43) |
| [2.2–13.9] | ||