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Objective: To describe the presentation of nosocomial infections at the diverse intensive care units of the Complejo Hospitalario Metropolitano Dr. Arnulfo Arias Madrid from January to December 2004.
Materials and Methods: Descriptive, retrospective, longitudinal study. The universe consisted of patients diagnosed with nosocomial infections attended in intensive care units: cardiovascular, internal medicine, surgery, and neurosurgery from January to December 2004. The sample corresponded to the whole universe. The data was analyzed using Epi-info v.3.3.2 and descriptive statistical results were calculated.
Results: 892 admissions among the four units, of which 185 patients developed nosocomial infections (infection rate: 20.7%), distributed primarily during August 2004. The most affected age group was 68 to 75 years old. The 35% of all infections occurred at the internal medicine's intensive care unit, followed by surgery (31%), neurosurgery (30%), and cardiovascular (14%). Acinetobacter calcoaceticus-baumanii was the most isolated agent.
Conclusions: The intensive care unit that showed the highest frequency of nosocomial infections among the four units was the internal medicine's intensive care unit. The 68 to 75 years old were the most affected age group, showing that older patients were more susceptible. Multiresistant infectious agents were the most isolated microorganisms.
