CRP and septic shock: The role of ADM as one of the possible biomarkers in the prognosis of VAP was evaluated in comparison to some other parameters, namely, APACHE II score, SOFA score, lactate, and CRP, hoping to find out which of them could predict the incidence of unfavorable outcome (prolonged MV, septic shock, and mortality) at two-time intervals, namely, the day of confirmed VAP diagnosis and 5 days later.