Endo-tracheal tube –associated pneumonia (ETTP) or ventilator associated pneumonia is the most dangerous complication in the intensive care units especially the surgical one (1). The objective of this study is to evaluate the incidence of (ETTP) in the emergent surgical intensive care and its relationship to the duration of mechanical ventilation and try to define if is it linear or not . It is important to begin our special studies in surgical intensive care units because we expect different incidence and mortality compared with international rates.