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Table 1 Patient characteristics

From: Concordance and limits between transcutaneous and arterial carbon dioxide pressure in emergency department patients with acute respiratory failure: a single-center prospective observational study

Male sex, no. (%) 51 (57)
Age, mean (± SD) - year 76 (15)
Past medical history, no. (%)  
Acute pulmonary edema 27 (29)
Chronic obstructive pulmonary disease 27 (29)
Ischemic heart disease 21 (23)
Home oxygen 16 (17)
Clinical data at admission, median (IQR)  
Heart rate - beats/min. 94 (80-110)
Systolic blood pressure - mm Hg 122 (106-144)
Diastolic blood pressure - mm Hg 69 (60-78)
Respiratory rate - breaths/min. 24 (19-28)
Glasgow coma scale 15 (14-15)
Temperature - C 37.0 (36.2-37.6)
Laboratory values, median (IQR)  
PaCO 2 - mm Hg 46.2 (37.6-66.8)
PtCO 2 - mm Hg 47.2 (42.1-60.0)
PaO 2 - mm Hg 73.5 (63.0-89.0)
pH 7.37 (7.30-7.43)
HCO 3 - mEq/L 26.0 (22.8-29.7)
Base excess - mmol/L 1.9 (-1.9-5.8)
Lactate - mmol/L 1.3 (0.7-2.2)
Hemoglobin - g/dL 12.3 (10.9-13.8)
White blood cells - G/L 12.4 (7.9-15.5)
C-reactive protein 41 (8-122)
Glycemia - g/L 1.4 (1.2-1.7)
Brain natriuretic peptide - ng/L 1704 (579-6200)
Diagnosis, no. (%)  
Heart failure 25 (27)
COPD 14 (15)
Pneumonia 42 (46)
Pulmonary embolism 5 (5)
Outcome, no. (%)  
Noninvasive ventilation required 41 (45)
Intubation required 4 (4)
Admitted to hospital 61 (66)
Admitted to ICU 19 (21)
Discharged from ED 10 (11)
Death at the ED 2 (2)
Inpatient mortality 9 (10)
  1. COPD: Chronic obstructive pulmonary disease; ED: Emergency department; ICU: Intensive care unit; IQR: Interquartile range; PaCO 2 : Partial pressure of carbon dioxide in the blood; PtCO 2 : Transcutaneous partial pressure of carbon dioxide in the blood; PaO 2 : Partial pressure of dioxygen in the blood.