Table 1.
Patient characteristics for non-centrifuged samples.
| Non-centrifuged (N = 92) | |
|---|---|
| Age (SD) | 68.7 (6.5) |
| Race (%) | |
| Black or African American | 9 (9.8%) |
| Caucasian/White | 82 (89.1%) |
| Not reported/declined | 1 (1.1%) |
| Sex (Male) (%) | 54 (58.7%) |
| Height (cm) (Q1, Q3) | 172.7 [162.8, 180.4] |
| Weight (kg) (SD) | 86.3 (19.7) |
| BMI (Q1, Q3) | 29.1 [24.6, 32.9] |
| Years of education [Q1, Q3] | 16.0 [12.0, 17.8] |
| ASA (%) | |
| 1 | 1 (1.1%) |
| 2 | 20 (21.7%) |
| 3 | 70 (76.1%) |
| 4 | 1 (1.1%) |
| Surgical service (%) | |
| Thoracic | 10 (10.9%) |
| General surgery | 26 (28.3%) |
| Gynecology | 2 (2.2%) |
| Orthopedics | 18 (19.6%) |
| Otolaryngology head and neck | 2 (2.2%) |
| Plastic surgery | 3 (3.3%) |
| Urology | 31 (33.7%) |
| Block Type (%) | |
| None | 78 (84.8%) |
| Regional | 14 (15.2%) |
| Epidural | 0 (0.0%) |
| Surgery duration (min) [Q1, Q3] | 137.0 [98.0, 193.0] |
| Case average BIS [Q1, Q3] | 45.6 [41.0, 51.7] |
| Case average aaMAC [Q1, Q3] | 0.8 [0.7, 0.8] |
| Intraoperative propofol dose [Q1, Q3] | 320.0 [150.0, 1102.2] |
| Hospital LOS (Days) [Q1, Q3] | 2 [1, 3] |
Average bispectral index (BIS) values were calculated from 66 patients in the non-centrifuged group. Case average age-adjusted minimum alveolar concentration (aaMAC) was calculated for those patients who received an inhaled anesthetic for more than half of the case; N = 49 in the non-centrifuged sample group. American Society of Anaesthesiologists scores (ASA) are presented as percentages of non-centrifuged patient samples and centrifuged patient samples. Hospital length of stay (LOS) values are listed in days.