Table 1.
Characteristics and clinical data of patients
| Conventional group (n = 37) | SPI group (n = 38) | |
|---|---|---|
| Age (years) | 74.6 ± 6.5 | 74.5 ± 5.2 |
| Weight (kg) | 56.9 ± 12.1 | 59 ± 10.2 |
| Height (cm) | 157.4 ± 10.3 | 159.2 ± 8.3 |
| Sex (M/F) | 17/20 | 23/15 |
| ASA physical status (I/II/III) | 0/30/7 | 0/32/6 |
| Diabetes mellitus (no/yes) | 28/8 | 29/9 |
| Hypertension (no/yes) | 20/16 | 15/23 |
| Medication (no/yes) | ||
| Beta blocker | 35/2 | 30/8 |
| Calcium channel blocker | 27/10 | 24/14 |
| ARB or ACEi | 28/9 | 27/11 |
| Preoperative chemotherapy (no/yes) | 32/5 | 33/5 |
| Anesthesia time (min) | 171.0 ± 46.6 | 169.1 ± 52.9 |
| Operation type | ||
| Hemicolectomy | 9 | 8 |
| Anterior resection | 14 | 16 |
| Low anterior resection | 11 | 10 |
| Othersa | 3 | 4 |
Values are mean ± SD or number
SPI surgical pleth index, ASA physical status American Society of Anesthesiologists physical status, ARB Angiotensin II receptor blocker, ACEi Angiotensin converting enzyme inhibitor
aOthers in the operation type included segmental resection, and subtotal/total colectomy