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Table 1 Patients’ baseline characteristics

From: Oxygen reserve index for non-invasive early hypoxemia detection during endotracheal intubation in intensive care: the prospective observational NESOI study

Age, years

59 [43–66]

Gender, female

22 (43.14%)

Body mass index, kg m−2

24.22 [20.81–29.73]

Past medical history

 Active smoking

13 (25.49%)

 Chronic arterial hypertension

12 (23.52%)

 Diabetes mellitus

7 (13.72%)

 Cancer and/or immunodepression

9 (17.64%)

 Cirrhosis

9 (17.64%)

 Chronic obstructive apnoea

4 (7.84%)

 History of hepatic encephalopathy

3 (5.88%)

 Chronic respiratory disease

2 (3.92%)

 Neuromuscular disease

2 (3.92%)

 Other

9 (17.64%)

Reason for ICU admission

 Acute neurologic failure

29 (56.80%)

 Acute respiratory failure

10 (19.61%)

 Shock

7 (13.73%)

 Acute renal failure

5 (9.80%)

Reason for endotracheal intubation

 Drug and/or alcohol poisoning

9 (17.65%)

 Hepatic encephalopathy

5 (9.80%)

 Post-extubation respiratory distress

5 (9.80%)

 Acute respiratory failure

4 (7.84%)

 Septic shock

4 (7.84%)

 Epileptic condition

3 (5.88%)

 Guillain–Barré syndrome

3 (5.88%)

 Myasthenia gravis

2 (3.92%)

 Encephalitis

2 (3.92%)

 Haemorrhagic shock

2 (3.92%)

 Acute pancreatitis

2 (3.92%)

 Delirium tremens

1 (1.96%)

 Meningitis

1 (1.96%)

 Inhalation pneumopathy

1 (1.96%)

 Haemorrhagic stroke

1 (1.96%)

 Other

6 (11.76%)

SAPS II

46 [30–62]

SOFA score at ICU admission

6 [3–10]

Arterial blood gas values at ICU admission (n  =  30)

 pH

7.39 [7.27–7.45]

 PaCO2, mmHg

37.13 [28.50–43.50]

 PaO2, mmHg

101.38 [76–145.50]

 PaO2/FiO2

323 [233–479]

 SaO2, %

97.75 [95.25–99.15]

 CO2, mmol/L

24.50 [17.40–27.40]

SpO2/FiO2 at ICU admission

388 [278–457]

Arterial lactate, mmol L−1

2.10 [1.50–4.60]

  1. The data are median [25th–75th percentiles] or number (percentage)
  2. ICU intensive care unit; SAPSII Simplified Acute Physiology Score version II; SOFA score Sequential Organ Failure Assessment score