1468. Neither Bacteriuria nor Urinary Tract Infection Increase the Risk of Surgical Site Infection in Cardiac Surgery
Session: Poster Abstract Session: HAI: Surgical Site Infections
Friday, October 28, 2016
Room: Poster Hall
  • Bacteriuria and surgical site infection cardiac surgery.pdf (196.1 kB)
  • Background:

    Surgical site infections in patients with cardiac surgery increase hospital stay, costs, morbidity and, even, mortality. Bacteriuria is commonly seen by surgeons as a risk for surgical site infection in these group of patients. The aim of the study was to evaluate the association between bacteriuria and urinary tract infection with surgical site infections in patients with cardiac surgery.


    Patients with cardiac surgery between april 2011 and july 2015 were prospectively followed up in a surveillance program in a reference center in Bogota, Colombia. Patients were followed up for 1 year using the CDC definitions for surgical site infections. Bacteriuria was defined as presence of significative count of bacteria in urine without signs or symtpoms of infection. Other possible infection sources were routinely looked after. A multivariate analysis was performed looking for the association between bacteriuria and urinary tract infections and surgical site infection, adjusting for known risk factors for infection.


    1319 procedures were performed. Median age was 63.5 year old, 64.5% were men and 100% received prophylactic antibiotic. 55% of the patients had a coronary artery bypass surgery and 31% had a valvular surgery. Median surgical time was 225 minutes, 60% required extracorporeal circulation. 3.4% had urinary tract infection and 1.4% had asymtomatic bacteriuria. Global rate of surgical site infection was 6.4%,with a 1.7% mediastinitis rate. In the multivariate analysis variables associated with surgical site infection included vancomycin use (OR: 2.3 , 95%CI:1.45-3.76), diabetes (OR: 1.65, 95%CI: 1.01-2.69); reintervention (OR: 2.84 , 95%CI: 1.25-6.46), previous antibiotic use (OR: 1.16 , 95%CI: 1.04-3.69) and cardiogenic shock (OR: 4.35 , 95%CI: 1.05-17.9). No associaton was found between surgical site infection and presence of bacteriuria or urinary tract infection.


    Neither bacteriuria nor urinary tract infection were identified as risk factors for surgical site infections in patients with cardiac surgery. Classic risk factors as diabetes and reintervention were identified, as well as vancomycin and previous antibiotic use.

    Patricia Reyes, MD1, Jorge Cortes, MD2, Diana Bermudez, RN1 and Juan Duarte, MD3, (1)Clinica Universitaria Colombia, Bogota, Colombia, (2)Medicine, Universidad Nacional de Colombia, Bogota, Colombia, (3)Universidad Nacional de Colombia, Bogota, Colombia


    P. Reyes, None

    J. Cortes, None

    D. Bermudez, None

    J. Duarte, None

    Findings in the abstracts are embargoed until 12:01 a.m. CDT, Wednesday Oct. 26th with the exception of research findings presented at the IDWeek press conferences.