Table 1. Population characteristics: comorbidities and vital signs at admission according to HFOT failure.
HFOT, high-flow oxygen therapy; N, total patients included; n, number of patients in the category; BMI, body mass index; HTA, arterial hypertension; COPD, chronic obstructive pulmonary disease; CHADSVASC, congestive heart failure, hypertension, age ≥ 75 years, diabetes, stroke, vascular disease, age 65 to 74 years, and sex category (female) score for atrial fibrillation stroke risk
| Characteristics | Mean and range (N = 52) | HFOT | P-value | |
| Success (n = 21) | Failure (n = 31) | |||
| Demographics | ||||
| Male gender (n) | 35 (67%) | 13 (62%) | 22 (71%) | 0.70 |
| Age (years) | 70 (65, 74) | 68 (64, 73) | 71 (65, 76) | 0.49 |
| BMI (kg/m2) | 30 (26, 36) | 28 (25, 33) | 31 (27, 37) | 0.20 |
| Comorbidities | ||||
| Chronic kidney failure (n) | 9 (17%) | 4 (19%) | 5 (16%) | 0.82 |
| Cancer (n) | 6 (11%) | 1 (4.7%) | 5 (16%) | 0.38 |
| HTA (n) | 38 (73%) | 15 (71%) | 23 (74%) | >0.99 |
| Hypercholesterolemia (n) | 19 (36%) | 6 (28%) | 13 (42%) | 0.67 |
| Chronic atrial fibrillation (n) | 13 (26%) | 3 (14%) | 10 (32%) | 0.34 |
| Ischemic heart disease (n) | 4 (8.0%) | 1 (4.7%) | 3 (9.7%) | >0.99 |
| Peripheral artery disease (n) | 4 (8.0%) | 1 (4.7%) | 3 (9.7%) | >0.99 |
| Stroke | 3 (6.0%) | 0 (0%) | 3 (9.7%) | 0.28 |
| COPD | 19 (37%) | 5 (24%) | 14 (45%) | 0.30 |
| Diabetes mellitus | 22 (42%) | 8 (38%) | 14 (45%) | >0.99 |
| Rheumatic disease | 3 (6.0%) | 1 (4.7%) | 2 (6.5%) | >0.99 |
| Charlson comorbidity index (points) | 4.00 (3.00, 6.00) | 4.00 (2.50, 6.00) | 5.00 (3.00, 6.50) | 0.29 |
| CHADSVASC score | 3.00 (2.00, 3.00) | 2.00 (2.00, 3.50) | 3.00 (2.00, 3.00) | 0.40 |
| Admission vitals | ||||
| Systolic blood pressure (mmHg) | 132 (119, 144) | 132 (117, 146) | 130 (119, 142) | 0.79 |
| Diastolic blood pressure (mmHg) | 68 (59, 80) | 71 (60, 87) | 68 (58, 75) | 0.29 |
| Cardiac rate (beats per minute) | 89 (77, 106) | 86 (78, 107) | 92 (78, 104) | 0.75 |
| Respiratory rate (breaths per minute) | 28.0 (23.2, 31.0) | 27.0 (23.0, 30.5) | 28.0 (23.5, 31.0) | 0.76 |
| Body temperature (°C) | 36.90 (36.50, 37.70) | 36.70 (36.45, 37.15) | 37.20 (36.55, 38.35) | 0.11 |
| Pulse oximetry (%) | 87.5 (82.0, 90.8) | 89.0 (84.5, 90.5) | 87.0 (80.5, 90.5) | 0.69 |