 Nowadays aggressive surgical therapies as well as transplantation are made safer by the monitoring in a closed environment, the surgical ICU, in the post-operative period.Moreover, the care and full recovery of many severely ill clinical patients as those with life-threatening infections occurs as a result of medical intensive care unit.However, despite many significant advances in various fields as mechanical ventilation, renal replacement therapy, antimicrobial therapy and hemodynamic monitoring this increased knowledge and the wise use of such technology is not available for all patients.