Table 1.
Differences in patient and surgical characteristics between the two outpatient surgery cohorts (PACU LOS < 3 hours versus PACU LOS ≥ 3 hours)
| PACU LOS < 3 h | PACU LOS ≥ 3 h | ||||
|---|---|---|---|---|---|
| n | % | n | % | P-value | |
| Total | 10,348 | 580 | |||
| PACU LOS (minutes), median [quartile] | 81 [62, 107] | 210 [192, 246] | < 0.0001 | ||
| ASA PS Score | 0.14 | ||||
| 1 | 1995 | 19.3 | 97 | 16.7 | |
| 2 | 17 | 0.2 | 1 | 0.2 | |
| 3 | 5879 | 56.8 | 358 | 61.7 | |
| 4 | 2457 | 23.7 | 124 | 21.4 | |
| Age (years), median [quartile] | 51 [37, 63] | 50 [39, 63] | 0.98 | ||
| Male sex | 4064 | 39.3 | 130 | 22.4 | < 0.0001 |
| Scheduled Case Duration (minutes), median [quartile] | 60 [38, 95] | 85 [55, 140] | < 0.0001 | ||
| Body Mass Index (kg/m2), median [quartile] | 26.5 [23.3, 30.6] | 26.7 [23.3, 30.0] | 0.55 | ||
| Comorbidities | |||||
| Active Smoker | 252 | 2.4 | 8 | 1.4 | 0.14 |
| Alcohol Abuse History | 574 | 5.5 | 6 | 1.0 | 0.06 |
| Anxiety | 942 | 9.1 | 51 | 8.8 | 0.86 |
| Asthma | 568 | 5.5 | 12 | 2.1 | 0.09 |
| Chronic Kidney Disease | 66 | 0.6 | 3 | 0.5 | 0.93 |
| Chronic Obstructive Pulmonary Disease | 68 | 0.7 | 2 | 0.3 | 0.52 |
| Chronic Pain | 253 | 2.4 | 20 | 3.4 | 0.17 |
| Coronary Artery Disease | 158 | 1.5 | 4 | 0.7 | 0.15 |
| Depression | 676 | 6.5 | 46 | 7.9 | 0.22 |
| Diabetes Mellitus | 171 | 1.7 | 15 | 2.6 | 0.13 |
| Dysrhythmias | 195 | 1.9 | 13 | 2.2 | 0.65 |
| Gastroesophageal Reflux Disease | 959 | 9.3 | 37 | 6.4 | 0.03 |
| History of Seizures | 76 | 0.7 | 3 | 0.5 | 0.73 |
| Hypertension | 1561 | 15.1 | 82 | 14.1 | 0.57 |
| Hypothyroidism | 606 | 5.9 | 25 | 4.3 | 0.14 |
| Obstructive Sleep Apnea | 550 | 5.3 | 30 | 5.2 | 0.44 |
ASAPS American Society of Anesthesiologists Physical Status, LOS Length of Stay, PACU Post-Anesthesia Care Unit