Table 4.
Comparison of patient characteristics and surgical outcomes among different ASA classes.
| Characteristics | ASA class 1/2 | ASA class 3/4 | P-value |
|---|---|---|---|
| Patients | 16 | 23 | - |
| Demographics | |||
| Age (years)∗ | 46.5 ± 22.3 | 59.1 ± 17.5 | 0.056 |
| BMI (kg/m2)∗ | 24.75 ± 5.5 | 28.35 ± 9.46 | 0.193 |
| Race/ethnicity | 0.420 | ||
| Caucasian | 3 (18.8%) | 3 (13%) | |
| African American | 1 (6.3%) | 4 (17.4%) | |
| Hispanic/Latinx | 10 (62.5%) | 8 (34.8%) | |
| Asian | 0 | 0 | |
| Other/not reported | 2 (12.5%) | 8 (34.8%) | |
| Comorbidities | |||
| Tobacco use | |||
| Active | 2 (14.3%) | 1 (5%) | 0.555 |
| Former | 0 | 5 (25%) | 0.063 |
| Hypertension | 4 (25%) | 14 (60.9%) | 0.049 |
| Congestive heart failure | 0 | 3 (13%) | 0.255 |
| Coronary artery disease | 0 | 5 (21.7%) | 0.066 |
| Cerebrovascular accident | 0 | 2 (8.7%) | 0.503 |
| COPD | 0 | 5 (21.7%) | 0.066 |
| Diabetes mellitus | 1 (6.3%) | 3 (13%) | 0.631 |
| Chronic kidney disease | 0 | 5 (21.7%) | 0.066 |
| Hemodialysis | 0 | 4 (17.4%) | 0.130 |
| Preoperative clinical course | |||
| Any preoperative COVID-19 symptoms | 8 (50%) | 12 (52.2%) | 0.894 |
| Preoperative positive COVID-19 test | 12 (75%) | 10 (43.5%) | 0.099 |
| Preoperative admission for COVID-19 | 0 | 3 (13%) | 0.255 |
| Time from symptom onset to surgery (days)∗ | 15.3 ± 4.5 | 17.7 ± 6.4 | 0.666 |
| Time from positive COVID-19 test to surgery (days)∗ | 0.3 ± 8.5 | 4 ± 14 | 0.358 |
| Surgical outcomes | |||
| Procedure length (mins)∗ | 171.3 ± 99 | 181.5 ± 127.1 | 0.789 |
| COVID-related inability to extubate in OR | 1 (6.3%) | 2 (8.7%) | 1.000 |
| New postoperative COVID-related ICU requirement | 2 (12.5%) | 5 (21.7%) | 0.678 |
| Postoperative ICU length of stay (days)∗ | 6 ± 5.7 | 8.1 ± 4.0 | 0.667 |
| Intubation | 1 (6.3%) | 4 (18.2%) | 0.374 |
| Days on ventilator∗ | 10† | 10.3 ± 3.8 | 1.000 |
| Hospital length of stay (days)∗ | 6.6 ± 6.7 | 30.8 ± 34.3 | 0.008 |
| Remain admitted to hospital | 2 (12.5%) | 7 (30.4%) | 0.262 |
| Deceased | 0 | 4 (17.4%) | 0.130 |
Bold indicates P < 0.05.
ASA = American Society of Anesthesiologists.
∗
Mean ± Standard Deviation.
†
Only 1 patient in ASA class 1/2 placed on ventilator postoperatively.