Table 1. Baseline characteristics of patients.
| Characteristics | Overall (n=71) | HFNC (n=31) | HC (n=40) | P value |
|---|---|---|---|---|
| Male (%) | 90 | 93 | 88 | 0.65 |
| Age (years) | 64±10 | 63.9±9 | 64.1±11 | 0.71 |
| BMI (kg/m2) | 26 [24–29] | 26 [24–29] | 27.5 [25–30] | 0.16 |
| ASA score | 0.08 | |||
| 1 | 3 [4] | 0 | 3 [8] | |
| 2 | 38 [54] | 14 [45] | 24 [60] | |
| 3 | 30 [42] | 17 [55] | 13 [33] | |
| CCI | 4 [3–5] | 4 [3–6] | 5 [3–6] | 0.80 |
| ARISCAT score | 50 [50–50] | 50 [50–50] | 50 [50–50] | 0.70 |
| SpO2/FiO2 | 461 [447–471] | 461 [447–466] | 462 [461–471] | 0.60 |
| PreOp weight loss (% of BW) | 10 [6–18] | 10 [5–14] | 10 [6–19] | 0.32 |
| PreOp NS | 38 [54] | 16 [52) | 22 [55] | 0.50 |
Data are expressed as mean ± standard deviation, percentage/absolute frequency and percentage [%] or as median and interquartile ranges [25–75]. HFNC, high flow nasal cannula cohort; HC, historical cohort; BMI, body mass index; ASA, American Society of Anesthesiologists; CCI, Charlson’s Comorbidity Index; ARISCAT, Assess Respiratory Risk in Surgical Patients in Catalonia; PreOP, preoperative; BW, body weight; NS, nutritional support.