“…Several studies have suggested that the prognosis for patients with VAP is better for trauma patients, than medical and surgical patients (24,27,47,69,76,104). Increased mortality has also been associated with delayed or absent adequate antibiotic treatment (59,72,104,113 (61). Late-onset VAP have been reported to be associated with higher mortality rates than early-onset VAP (3,16,64,80,119).…”