Introduction:

Antimicrobial resistance increases hospital mortality and is a public health problem.

Objective:

To determine the characteristics of microorganisms isolated from hospitalized patients and to detail antimicrobial sensitivity profiles.

Methods:

A cross-sectional study in a hospital in the Peruvian Jungle during 2021. The type of microorganism, antimicrobial sensitivity (VITEK ® 2 bioMérieux), source of isolation, patient age and hospitalization service were identified.

Results:

477 positive cultures were included in 453 patients. The samples came from bronchial secretion 54.9%, blood 35.2%, urine 6.5% and others 3.4%. The hospital services of origin were emergency 49.9%, intensive care unit 40.0%, medicine 9.6% and surgery 0.5%. Gram negative bacteria (74.6%), Gram positive bacteria (16.4%) and fungi (9%) were isolated. The most frequently isolated microorganisms were Acinetobacter baumannii complex (32.7%), Klebsiella pneumoniae ssp. (16.8%) and Pseudomonas aeruginosa (13.4%). Antimicrobial resistance for the most frequently isolated microorganisms was: Acinetobacter baumannii complex, XDR in 88.5%; Klebsiella pneumoniae ssp., MDR in 56.3%; Pseudomonas aeruginosa, XDR in 54.7%; Staphylococcus epidermidis, MDR in 92.3%; and Staphylococcus haemolyticus, MDR in 100%.

Conclusions:

Gram-negative bacteria were the most prevalent, and critical hospital areas were the most affected, finding a high percentage of antimicrobial resistance.

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