Table 4 Adjustment of mechanical ventilation settings following ABG analysis
From: Self-reported attitudes versus actual practice of oxygen therapy by ICU physicians and nurses
|  | FiO225% to 40% (n = 37,172) | FiO240% to 60% (n = 23,466) | FiO260% to 80% (n = 4,318) | FiO280% to 100% (n = 2,041) | Total (n = 68,222) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PaO2 | 13.4 (4.1) | 12.6 (5.2) | 12.3 (6.6) | 16.0 (13.7) | 13.1 (5.2) | ||||||||||
SpO2 | 98.0 (2.9) | 96.5 (3.8) | 94.3 (6.3) | 89.7 (12.5) | 96.9 (4.6) | ||||||||||
PEEP | 5.6 (3.4) | 7.3 (4.4) | 9.1 (5.6) | 9.0 (6.3) | 6.5 (4.2) | ||||||||||
PaO 2 range (kPa) | Delta FiO 2 (%) | Delta PEEP (cm H 2 O) | No decrease in FiO 2 or PEEP (%) | Delta FiO 2 (%) | Delta PEEP (cm H 2 O) | No decrease in FiO 2 or PEEP (%) | Delta FiO 2 (%) | Delta PEEP (cm H 2 O) | No decrease in FiO 2 or PEEP (%) | Delta FiO 2 (%) | Delta PEEP (cm H 2 O) | No decrease in FiO 2 or PEEP (%) | Delta FiO 2 (%) | Delta PEEP (cm H 2 O) | No decrease in FiO 2 or PEEP (%) |
<7 | +6.1 (13.8) | +0.3 (3.2) | 87.6 | +5.4 (13.2) | +0.7 (3.7) | 81.3 | +2.0 (14.5) | +0.6 (6.0) | 86.3 | −7.0 (16.8) | +1.0 (6.7) | 76.9 | +3.0 (14.8) | +0.7 (4.3) | 83.3 |
7 to 10 | +2.6 (6.7) | +0.1 (3.1) | 81.9 | +1.6 (7.3) | +0.2 (4.0) | 80.3 | −0.2 (9.4) | +0.3 (5.2) | 80.8 | −6.7 (14.8) | +0.1 (5.9) | 76.5 | +1.3 (8.3) | +0.2 (3.8) | 80.8 |
10 to 15 | +0.6 (4.9) | −0.2 (2.7) | 72.9 | −1.5 (6.6) | −0.2 (3.8) | 48.2 | −5.2 (9.2) | +0.1 (4.9) | 33.7 | −15.6 (19.2) | +0.4 (5.7) | 31.1 | −0.6 (6.7) | −0.1 (3.2) | 62.3 |
15 to 20 | −0.3 (5.1) | −0.3 (2.7) | 65.0 | −4.8 (7.2) | −0.3 (3.3) | 25.1 | −11.2 (11.4) | +0.1 (4.7) | 13.5 | −20.4 (20.5) | +0.0 (4.7) | 23.6 | −2.0 (7.3) | −0.2 (3.0) | 52.8 |
20 to 25 | −1.2 (6.4) | −0.2 (2.4) | 54.2 | −6.1 (9.0) | −0.4 (3.0) | 22.1 | −12.7 (12.4) | −0.4 (5.3) | 11.8 | −25.9 (21.7) | −0.1 (4.8) | 21.3 | −4.2 (10.1) | −0.3 (2.9) | 40.4 |
25 to 30 | −1.6 (7.0) | −0.4 (2.8) | 51.6 | −7.2 (9.6) | −0.3 (2.7) | 18.8 | −19.0 (12.1) | −0.4 (3.8) | 9.2 | −25.3 (21.6) | −0.1 (4.8) | 22.9 | −7.1 (12.2) | −0.3 (2.9) | 32.0 |
>30 | −1.0 (6.6) | −0.4 (4.0) | 69.8 | −3.5 (9.6) | −0.4 (4.5) | 43.0 | −15.4 (15.8) | +0.3 (5.7) | 24.8 | −33.6 (23.2) | −0.4 (4.0) | 14.3 | −5.7 (15.9) | −0.3 (4.2) | 51.6 |