Table 2.
Baseline characteristics.
| Characteristic | Specification | |
|---|---|---|
| Age, years | 63 (51–69) | |
| Gender | Men | 39/51 (76) |
| Women | 12/51 (24) | |
| Height, cm | 178 (172–182) | |
| Weight, kg | 90 (77–103) | |
| BMI, kg/m2 | 28 (25–32) | |
| Position | Prone | 19/51 (37) |
| Supine | 32/51 (63) | |
| Administration of NMBA | 17 (33) | |
| Conversion to I-ASV, hours | 10 (3–48) | |
| Vital signs | Heartrate, bpm | 93 (77–107) |
| MAP, mmHg | 75 (70–82) | |
| SpO2, % | 92 (91–94) | |
| Arterial blood gas | pH | 7.39 (7.31–7.47) |
| PaO2, kPa | 9.2 (8.6–10.1) | |
| PaCO2, kPa | 6.4 (5.5–7.1) | |
| Bicarbonate, mmol/l | 26 (24–33) | |
| Arterial sat, % | 93 (92–95) | |
| PaO2/FiO2 ratio, mmHg | 125 (95–165) | |
| Severity of illness | APACHE IV | 59 (45–70) |
| Severity of ARDS | Mild | 7 (14) |
| Moderate | 28 (55) | |
| Severe | 16 (31) | |
| Chest CT-scan performed | 28/51 (55) | |
| Lung parenchyma affected | 0% | 3/28 (11) |
| 25% | 7/28 (25) | |
| 50% | 7/28 (25) | |
| 75% | 9/28 (32) | |
| 100% | 2/28 (7) | |
| Chest X-ray performed | 41/51 (80) | |
| Quadrants affected | 1 | 6/41 (15) |
| 2 | 11/41 (27) | |
| 3 | 14/41 (34) | |
| 4 | 10/41 (24) | |
| Co-existing disorders | Hypertension | 18/51 (35) |
| Heart failure | 2/51 (4) | |
| Diabetes | 9/51 (18) | |
| Chronic kidney disease | 1/51 (2) | |
| COPD | 3/51 (6) |
Data are median (IQR) or N/total (%). BMI: Body Mass Index; NMBA: neuromuscular blocking agents; I-ASV: INTELLiVENT-ASV; APACHE: Acute Physiology and Chronic Health Evaluation; CT: computed tomography.