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Table 1 Demographic and clinical features of the sample

From: Predictor factors for non-invasive mechanical ventilation failure in severe COVID-19 patients in the intensive care unit: a single-center retrospective study

Main characteristics of the population (82 patients)

Demographic data

Variable

Result

Sex, male (%)

62 (75.6%)

Age (years)

67.0 [56.5–73.0]

BMI (kg/m2)

27.8 [25.3–31.3]

NIV-day

5.0 [3.0–8.5]

Ward LOS (days)

3.0 [0.0–7.0]

ICU LOS (days)

8.0 [5.0–12.0]

Survived (%)

37 (45.1%)

Comorbidities

Variable

Result

Charlson Comorbidity Index

3 [1–4]

Hypertension (%)

45 (54.9%)

Obesity (%)

27 (32.9%)

Diabets (%)

22 (26.8%)

COPD (%)

15 (18.3%)

CAD (%)

10 (12.2%)

CKD (%)

4 (4.9%)

Endocrinological disease (%)

4 (4.9%)

Atrial fibrillation (%)

4 (4.9%)

DVT (%)

3 (3.7%)

CVD (%)

3 (3.7%)

Asthma (%)

3 (3.7%)

Autoimmune disease (%)

3 (3.7%)

Hematological disease (%)

2 (2.4%)

OSAS (%)

2 (2.4%)

Neurological disorder (%)

2 (2.4%)

Liver disease (%)

1 (1.2%)

Arterial blood gas analysis and ventilation parameters

Variable

Result

pH

7.46 [7.43–7.48]

PaO2(mmHg)

89.5 [75.0–106.2]

PaCO2(mmHg)

37.5 [33.0–42.0]

PaO2/FiO2

125.0 [98.5–177.7]

Lactate (mmol/L)

1.3 [1.1–1.8]

CPAP (%)

13 (15.9%)

PSV (%)

69 (84.1%)

PEEP (cmH2O)

10 [10–10]

Pressure support (cmH2O)

7.5 [6.0–10.0]

  1. The table reports demographic and clinical features. Frequencies are expressed as numbers and percentages (%). Continuous variables are expressed as mean ± standard deviation (SD) or median, first and third quartile [q1q3]. BMI, body mass index; LOS, length of stay; CAD, coronary artery disease; DVT, deep vein thrombosis; CVD, cerebral-vascular disease; CKD, chronic kidney disease; COPD, chronic obstructive pulmonary disease; OSAS, obstructive sleep apnea syndrome; CPAP, continuous positive airway pressure; PSV, pressure support ventilation; PEEP, positive end-expiratory pressure