Table I. Demographic data of our study groups. Data are presented as mean±SD or proportions.

BMI: Body mass index, HR: heart rate, BPM: beat per minute, MAP:mean arterial pressure, CVP: central venous pressure, HT: hypertension,NIDDM: non-insulin-dependent diabetes mellitus, IDDM: insulindependentdiabetes mellitus, PVD: peripheral vascular disease, COPD:cronic obstructive pulmonary disease, CRF: chronic renal failure, AKI:acute kidney injury, RRT: renal replacement therapy.