Determinación de la incidencia de infección de vías respiratorias inferiores e identificación de microorganismos en pacientes postquirúrgicos de cirugía cardiovascular

93% of the cases. The surgery that was most performed was the aortic valve change (40.82%). r egarding the isolation of microorganisms, 76.87% of the patients were negative or not performed; however, staphylococcus epidermidis stood out with 4.76%. Of the patients who were positive for isolation, 26.47% were sensitive to nitrofurantoin, 11.76% to trimethoprim with sulfamethoxazole, and 8.82% to fluconazole and levofloxacin, respectively. Regarding the evolution of patients, 90.50% had a good prognosis; in the case of complications, 64.63% did not present any. Conclusion: The presence of lower respiratory infections in patients postoperated by cardiovascular surgery, combined with resistance by administered antibiotics, represents a global problem, and that significantly affects the efficient medical attention due to the failure of treatments in the Intensive c are Areas.