Table 2.
Patient characteristics for centrifuged samples.
| Centrifuged (N = 20) | |
|---|---|
| Age (SD) | 68.2 (5.6) |
| Race (%) | |
| Black or African American | 1 (5.0%) |
| Caucasian/White | 19 (95.0%) |
| Not reported/declined | 0 (0.0%) |
| Sex (Male) (%) | 12 (60.0%) |
| Height (cm) (Q1, Q3) | 172.7 [162.0, 179.1] |
| Weight (Kg) (SD) | 88.3 (20.3) |
| BMI (Q1, Q3) | 28.7 [25.2, 34.5] |
| Years of education [Q1, Q3] | 15.5 [14.0, 16.0] |
| ASA (%) | |
| 1 | 1 (5.0%) |
| 2 | 1 (5.0%) |
| 3 | 18 (90.0%) |
| 4 | 0 (0.0%) |
| Surgical service (%) | |
| Thoracic | 2 (10.0%) |
| General surgery | 8 (40.0%) |
| Gynecology | 0 (0.0%) |
| Orthopedics | 3 (15.0%) |
| Otolaryngology head and neck | 1 (5.0%) |
| Plastic surgery | 2 (10.0%) |
| Urology | 4 (20.0%) |
| Block type (%) | |
| None | 18 (90.0%) |
| Regional | 2 (10.0%) |
| Epidural | 0 (0.0%) |
| Surgery duration (min) [Q1, Q3] | 135.5 [99.0, 195.0] |
| Case average BIS [Q1, Q3] | 47.2 [42.7, 52.1] |
| Case average aaMAC [Q1, Q3] | 0.8 [0.7, .0.9] |
| Intraoperative propofol dose [Q1, Q3] | 305.0 [150.0, 1469.0] |
| Hospital LOS (Days) [Q1, Q3] | 1 [1, 2] |
Average bispectral index (BIS) values were calculated from all 20 patients in the centrifuged samples 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 = 11 patients in the centrifuged samples 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.