Note:  All values are expressed as numbers (percentages) or median (interquartile range).
Abbreviations: APACHE II, Acute Physiology and Chronic Health Evaluation II; ALT, alanine transaminase; BUN, blood urea nitrogen; CCI, Charlson Comorbidity Index; COPD, chronic obstructive pulmonary disease; CRP, C-reactive protein; HS Troponin I, high-sensitive troponin I; IMV, invasive mechanical ventilation; SOFA Score, The Sequential Organ Failure Assessment Score; VAP, ventilator associated pneumonia; WBC, white blood cell count.