Introduction:

Bacteremia affects patients in the hospital, with mortality rates reported in 35%. Microorganisms that produce beta- lactamases of extended spectrum are each time more resistant to antibiotics.

Method:

Observational and descriptive study in patients older tan 14 years old with positive blood cultures in Hospital Universitario de Santander, between 2014 and 2016.

Results:

148 clinic records were analyzed, the mean age was 55.5 years. 51.4% were women. The proportion of resistant germs was of 23.6%, the production of beta-lactamases of extended spectrum in E. coli and K. pneumoniae was 40%. 100% of patients with resistant germs had a rate of severe PITT. S. aureus showed a 50% of resistance to oxacillin.

Conclusion:

23.6% of patients had an infection for resistant germs, the most common were E. coli and K. pneumoniae. General mortality was of 30%.

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