Table 1 Characteristics of the patients

Number of patients n (%)

367 (100)

Male, n (%)

219 (59.7)

Age in years, median (IQR)

61 (49–72)

Weight Kg, median (IQR)

70 (60–80)

Height cm, mean (SD)

163.6 (10)

Body mass index kg/m², Median (IQR)

25.3 (21.7–29.1)

Active Smoking, n (%)

33 (9)

Active alcoholism, n (%)

22 (6)

Reason for ICU admission, n (%)

 Medical

345 (94)

 Surgical (only postsurgical)

22 (6)

Type of ventilatory failure, n (%)

 Shock

52 (14.9)

 Hypercapnia (pH < 7.25, high CO₂)

23 (6.6)

 Hypoxemia (PaO₂ < 60, usual FiO₂)

261 (75)

 Neuromuscular

2 (0.6)

 Perioperative

10 (2.9)

Immunosuppression, n (%)

72 (19.6)

 Pharmacological, n (%)

25 (6.8)

 HIV, n (%)

10 (2.7)

 Others, n (%)

63 (17.2)

Comorbidities, n (%)

 Diabetes Mellitus

113 (30.8)

 Hypertension

173 (47.1)

 Asthma

8 (2.2)

 Pulmonary fibrosis

6 (1.6)

 Chronic kidney disease

69 (18.8)

 Chronic liver disease

17 (4.6)

Neoplasms, n (%)

 Hematological

7 (1.9)

 Solid neoplasms

2 (0.5)

 Solid neoplasms Chest

1 (0.3)

 Solid neoplasms Abdomen

9 (2.4)

 Solid musculoskeletal neoplasms

4 (1.1)