Table 3 Incidence of intraoperative hypotension (unadjusted), by patient characteristics, surgery length, and facility type (n = 127,095)
MAPa < 65 for 15 + min (%) | Total time MAP < 65 (mean min) | Area under MAP of 65 (mean mmHg*min) | Time weighted average MAP < 65 (mean mmHg) | |
|---|---|---|---|---|
Total | 29.0% | 12.4 | 65.4 | 0.67 |
Age group* | ||||
18–39 years | 32.1% | 15.3 | 79.2 | 0.82 |
40–64 years | 28.4% | 12.0 | 62.2 | 0.62 |
≥ 65 years | 28.0% | 11.5 | 62.3 | 0.65 |
Sex* | ||||
Female | 32.3% | 14.0 | 74.6 | 0.75 |
Male | 24.9% | 10.5 | 54.1 | 0.56 |
ASAb physical status* | ||||
II | 31.0% | 13.5 | 65.6 | 0.67 |
III | 27.2% | 11.4 | 63.8 | 0.64 |
IV | 27.2% | 11.8 | 73.7 | 0.79 |
Surgery length* | ||||
< 60 min | 12.5% | 4.4 | 23.3 | 0.65 |
60–119 min | 27.4% | 10.1 | 53.1 | 0.74 |
120–179 min | 35.7% | 15.3 | 80.0 | 0.63 |
180–239 min | 40.5% | 19.5 | 104.3 | 0.57 |
240–299 min | 42.0% | 23.1 | 122.9 | 0.52 |
300 + min | 46.4% | 31.3 | 163.2 | 0.51 |
Anesthesia type* | ||||
General | 28.6% | 12.3 | 65.2 | 0.67 |
Regional | 43.2% | 18.7 | 80.2 | 0.64 |
Neuraxial | 15.2% | 5.7 | 25.1 | 0.32 |
Anesthesia complexity* | ||||
Base units 0 to 5 | 28.2% | 12.2 | 61.0 | 0.75 |
Base units 6 to 10 | 29.1% | 12.2 | 66.1 | 0.58 |
Base units 11 or greater | 33.5% | 15.2 | 89.8 | 0.53 |
Facility type* | ||||
Ambulatory surgical center | 30.9% | 13.6 | 60.1 | 0.69 |
Hospital | 28.7% | 12.2 | 66.2 | 0.66 |