Table 4.
Oxygen supplementation and supportive ventilation on admission and follow up.b
| Admission (n = 82)a | 48 h (n = 79)a | 7 days (n = 51)a | |
|---|---|---|---|
| Respiratory frequency, mean – rate per minute | 23.9 ± 6.3 | 21.6 ± 6 | 22.5 ± 11.5 |
| Oxygen saturation, mean | 94 ± 4.4 | 94 ± 3.9 | 93.6 ± 6.9 |
| SpO2/FiO2ratio, median (IQR) | 428 (316.1–454.8) | 271.4 (158.3–361.5) | 230.2 (118.8–346.4) |
| Oxygen supplementation and supportive ventilation – no. (%) | |||
| Nasal cannula | 2 (5.9%) | 6 (9%) | 4 (7.0%) |
| Face masks | 22 (64.7%) | 33 (49.3%) | 16 (28.1%) |
| High oxygen supplementation device | 9 (26.5%) | 11 (16.4%) | 6 (10.5%) |
| High flow nasal cannulas | 0 (0%) | 10 (14.9%) | 16 (28.1%) |
| Non-invasive mechanical ventilation | 0 (0%) | 2 (3%) | 3 (5.3%) |
| Invasive mechanical ventilation | 1 (2.9%) | 5 (7.5%) | 12 (21.1%) |
SpO2/FiO2 ratio: arterial oxygen saturation measured by pulse oximetry to fraction of inspired oxygen.
a
Total number of patients varies among variables and follow up as mortality increases.
b
Plus-minus values are means (±SD). Rounding has been applied to percentages. Total may no be 100 because of rounding.