Hemodialysis-Related Infections: A 4-Year Surveillance
Abstract
Objective: To analyze the results from the surveillance of hemodialysis-related infections.
Material and Methods: Data was prospectively gathered from outpatients attending a hemodialysis unit from April 2019 until March 2023. The National Healthcare Safety Network (NHSN) Dialysis Event Surveillance was used to identify three types of infection-related dialysis events. Event rates were calculated and stratified by vascular access type, standardized infection ratios for bloodstream infections (BSI), intravenous antimicrobial starts, and described pathogens identified among BSI.
Results: A total of 2,288 patient-month follow-ups were included. There were 79 infection-related dialysis events (24 BSI; 46 intravenous antimicrobial starts, nine pus, redness, or increased swelling at the vascular access site). The incidence of BSI per 100 patient-months was 1.05 (0.59 arteriovenous fistula, 0.83 arteriovenous graft, and 2.22 central venous catheter). Seventeen BSI were vascular access-related. Access-related BSI per 100 patient-months was 0.74 (0.39 arteriovenous fistula, 0.41 arteriovenous graft, and 1.85 central venous catheter). Intravenous antimicrobial starts per 100 patient-months was 2.01 (0.98 arteriovenous fistula, 2.62 arteriovenous graft, and 3.14 central venous catheter). Most events occurred in patients with a central venous catheter. When benchmarked with the 2014 NHSN, the standardized infection ratio of BSI, access-related BSI, and intravenous antimicrobial starts were 1.40, 1.26, and 0.55, respectively. The most serious outcome was BSI; resulting in 83.3% hospitalizations, 25% loss of vascular access, and 15.8% deaths.
Conclusion: Surveillance of infection-related dialysis events is important for prevention. These events were highest among patients with a central venous catheter compared with other vascular access types.
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