Introduction:

Pneumonia associated with mechanical ventilation (VAP) is one of the most frequent intrahospital infections in intensive care, although its mortality is controversial, it is associated with higher morbidity and mortality, being the second in frequency in Healthcare-Associated infections. Materials and methods: Observational, descriptive cross-sectional study with non-probabilistic sampling of consecutive cases of patients with pneumonia associated with mechanical ventilation at the National Hospital from January to August 2021. Results: A total of 47 patients with ages ranging from 19 to 76 (48.77 ± 13.39) were included. 61.7% (n = 29) belonged to the male sex. Acinetobacter baumannii was isolated from 11% of blood cultures and 19% of tracheal secretions. Triple antibiotic therapy was used, the most frequent combination being meropenem plus colistin plus tigecycline. Conclusion: The most frequent microorganism was Acinetobacter baumannii, both in blood culture and in tracheal secretion. Most of the patients were male and aged between 36 and 45 years.

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