Results: average age of patients in both groups was 67.94 ± 16.59; male 71.1%; severe malnutrition BMI 20.58 ± 3.39; intubation indicationes were respiratory failure (42.4%) and comatose (42.2%); the highest rate of comorbidities was cardiovascular disease (); no patient had hypothermia; cavernous lung lesions was only 0.8%, both lung lesions was 26%; VAP accounted for 97.7%, septic shock 31.0%, Among pathogenic bacteria: Acinetobacter baumannii had the highest rate (34.3%); the rate of antibiotic resistance for all 5 types of bacteria increased higher than previous similar studies.