Table 2.
Perioperative and physiologic characteristics
| Variable | Anesthetic technique
|
||
|---|---|---|---|
| Spinal (n=361) |
General (n=183) |
P-value | |
| Preoperative MAP (SD) | 93.2 (13.0) [1 missing] |
92.8 (11.8) | 0.74b |
| Preoperative HR (SD) | 73.5 (13.0) [1 missing] |
74.9 (12.4) | 0.23b |
| Mean intraoperative MAP (SD) | 79.7 (6.5) [1 missing] |
80.6 (5.1) | 0.09c |
| Intraoperative HR (SD) | 76.6 (12.5) | 79.0 (12.7) | 0.034b |
| Intraoperative maximum Ps (SD) | 141.0 (19.3) [1 missing] |
145.7 (18.9) | 0.008b |
| Intraoperative maximum Pd (SD) | 76.3 (10.4) [1 missing] |
79.9 (9.6) | <0.001c |
| Intraoperative minimum Ps (SD) | 101.8 (11.1) [1 missing] |
99.8 (9.4) | 0.028c |
| Intraoperative minimum Pd (SD) | 49.4 (6.9) [1 missing] |
49.1 (6.1) | 0.56c |
| First PACU pain rating (SD) | 0.7 (2.1) | 2.5 (3.6) | <0.001c |
| Last PACU pain rating (SD) | 2.6 (2.5) | 3.2 (2.8) | 0.015c |
| Postoperative mean MAP (SD) | 88.9 (13.2) [3 missing] |
85.6 (12.8) | 0.005b |
| Postoperative mean HR (SD) | 77.8 (13.6) [3 missing] |
82.2 (14.5) | 0.001b |
| Nausea/vomiting, n (%) | 45 (12.5) | 18 (9.8) | 0.40a |
| Urinary retention, n (%) | 43 (11.9) | 95 (51.9) | <0.001a |
| Vasopressor used, n (%) | 90 (24.9) | 30 (16.4) | 0.028a |
| Postoperative hematoma, n (%) | 1 (0.3) | 0.0 | 1.00a |
Notes:
a
Association between the two groups using Fisher’s exact test;
b
mean differences, pooled method (assuming equal variance across the groups);
c
mean differences, Satterthwaite method (assuming unequal variance across the groups).
Abbreviations: Ps, systolic pressure; Pd, diastolic pressure; PACU, postanesthesia care unit; MAP, mean arterial pressure; HR, heart rate.