• Int J Med Sci · Jan 2013

    Incidence, clinical, microbiological features and outcome of bloodstream infections in patients undergoing hemodialysis.

    • Maria Fysaraki, George Samonis, Antonis Valachis, Eugenios Daphnis, Drosos E Karageorgopoulos, Matthew E Falagas, Kostas Stylianou, and Diamantis P Kofteridis.
    • 2. Department of Nephrology, University Hospital of Heraklion, Crete, Greece.
    • Int J Med Sci. 2013 Jan 1; 10 (12): 1632-8.

    ObjectivesInfection is a common cause of death among hemodialysis patients. The study investigated incidence, risk factors, clinical features and outcome of bloodstream infections (BSIs) in haemodialysis patients.MethodsThe records of haemodialysis patients from 1999 to 2005 were reviewed. Risk factors were investigated by multivariate analysis.ResultsThere were identified 148 bacteremic episodes, in 102 patients. The BSI rate was 0.52 per 1000 patient-days. Of the 148 episodes, 34 occurred in patients with permanent fistulae (0.18/1000 patient-days); 19 in patients with grafts (0.39/1000 patient-days); 28 in patients with permanent tunneled central catheters (1.03/1000 patient-days); and 67 in those with temporary-catheter (3.18/1000 patient-days). With fistula as reference, the BSI ratio was 1.84 with arteriovenous graft (P=.029), 4.85 with permanent central venous catheter (P<.001), and 14.88 with temporary catheter (P <.001). Catheter related were 41 episodes (28%). Gram positive organism were responsible for 96 episodes (65%), with S. aureus ( 55%) the most frequent, followed by S. epidermidis (26%) and Gram-negative for 36 (23%), with E. coli (39%) the most frequent. Infection was polymicrobial in 14 (9.5%). Diabetes (p<0.001), low serum albumin (p=0.040) and low hemoglobin (p<0.001) were significant risk factors. During hospitalization 18 patients (18%) died. Septic shock (p<0.001) and polymicrobial infection (p=0.041) were associated with in-hospital mortality.ConclusionThe risk of BSI in patients undergoing hemodialysis is related to the catheter type and vascular access. Septic shock and polymicrobial infection predispose to unfavourable outcome.

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