Table II. Biochemistry and laboratory data of study groups. Data are presented as mean±SD or proportions.

BUN: Blood urea nitrogen, CRP: C-reactive protein, PaCO2: arterial partial CO2 pressure, HCO3: bicarbonate, SGOT: serum glutamic oxaloacetic transaminase, SGPT: serum glutamic pyruvic transaminase, LDH: lactate dehydrogenase, PaO2/FIO2: the ratio of partial arterial O2 pressure and fraction of inspired oxygen.