Study objective is aimed at determining the rate of adrenal insufficiency in children in this disease and the role of blood cortisol level for prognosis. Methods: Prospective, descriptive analytic study of 74 cases with septic shock in Intensive Care Unit and Emergency Department of Children's Hospital 1 from 10/2008 to 4/2011.Results: Most children are under 5 years old (81.5%), 46.8% men inside.