Prevalence of infections and antimicrobial use among hemodialysis outpatients: A prospective multicenter study.

Introduction: A common form of Renal Replacement Therapy is haemodialysis. Haemodialysis (HD) patients require a vascular access. Because of Frequent hospitalization the HD patients are at higher risk of developing infections. Positive Blood culture, IV antimicrobial use and signs of inflammation at vascular access site are the three dialysis events that can cause substantial morbidity and mortality in patients.The objective is to identify and implement strategies to prevent dialysis events within the facility by providing appropriate analyses of dialysis events. Methodology: A prospective surveillance study was performed between April’23 and November’23 at our outpatient HD facility. All HD patients were eligible for the study if they received HD on first two working days of the month. We conducted a pre-stage study for two months from April’23 to May’23 and collected data. After detailed analysis, implementation measures were included in month of June’23. The surveillance was regarded as a process improvement project and further data for dialysis events were collected till month of November’23. Interventions: The following interventions were adopted as process improvement in hemodialysis unit; 1). Revision of the current antimicrobial policy of dialysis unit 2). Implementation of Core interventions to prevent the dialysis event like hand hygiene observation, catheter/vascular access care observation, staff education, patient education, catheter removal, CHG for skin preparation, Catheter hub disinfection and regular surveillance with feedback of Dialysis events. 3). Revised policy for regular RO water plant disinfection and microbiological testing Results: 755 patients were reviewed for dialysis events during the 09-month study period. A total of 16 dialysis events were reported with overall dialysis events rates was - 2.09/100 patient-months. The rate of IV antimicrobial use was-1.19/100 patient-months and the positive blood culture rate was-0.92/100 patient-months Gram-negative bacilli were predominant in patients with central lines (n = 9); however, skin commensals and gram negative bacilli were also identified in patients with fistula or graft (n = 2). A reduction in dialysis events from 3.3 /100 patient days to 1.08/100 patient days was observed after the implementation of core interventions. Conclusion: Dialysis events were significantly more frequent in patients with tunnelled or non-tunnelled central venous lines compared to those with fistula or graft. In haemodialysis patients, good compliance with antimicrobial policy and regular monitoring of core interventions will reduce the risk of dialysis events.

Objective: To determine the difference in the rates of dialysis events stratified by vascular access type and to describe the microbiological profile and sensitivity patterns of positive blood cultures over a 3-year period. Subjects and Methods: The dialysis event data of 10,751 chronic hemodialysis patients collected from March 2013 to February 2016 at an outpatient dialysis unit in Kuwait were reviewed. The dialysis events studied were: intravenous (IV) antimicrobial use, a positive blood culture, and signs of inflammation at the vascular access site. Dialysis event rates were stratified by the type of vascular access used for the dialysis, i.e., fistula, graft, and tunneled/nontunneled central line. Rates were expressed per 100 patient-months. Results: The overall dialysis event rate was (10.7/100 patient-months). The rate of IV antimicrobial use was higher (12.53/100 patient-months) in patients with tunneled central lines than in all other vascular access types (10.29/100 patient-months). Positive blood culture and inflammation at the vascular access site were highest in patients with nontunneled central lines (1.65 and 1.54/100 patient-months, respectively) when compared to those with other types of vascular access. Gram-negative rod isolates were predominant in patients with central lines (n = 35; 46.67%); however, common skin commensals and gram-negative rods were also identified in patients with fistula or graft (n = 4; 44.45%). Conclusion: Dialysis event rates were higher among patients with tunneled or nontunneled central lines than in patients with fistula or graft. Gram-negative rods were the most commonly isolated microbial group.

Bloodstream Infection Prevention in ESRD: Forging a Pathway for Success

Infection control Surveillance of dialysis events at outpatient hemodialysis centers in Saudi Arabia: A 3-year national data.

As in many countries, there is neither a surveillance system nor a study to reveal the hemodialysis (HD) related infection rates in Turkey. We aimed to investigate the infection rate among HD outpatients and implement CDC’s surveillance system. A multicenter prospective surveillance study is performed to investigate the infection rate among HD patients. CDC National Healthcare Safety Network (NHSN) dialysis event (DE) protocol is adopted for definitions and reporting. During April 2016–April 2018, 9 centers reported data. A total of 199 DEs reported in 10,035 patient-months, and the overall DE rate was 1.98 per 100 patient-months. Risk of blood culture positivity is found to be 17.6 times higher when hemodialysis was through a tunneled catheter than through an arteriovenous fistula. DE rate was significantly lower in patients educated about the care of their vascular access site. Staphylococcus aureus was the most causative microorganism among mortal patients. Outcomes of DEs were hospitalization (73%), loss of vascular access (18.2%), and death (7.7%). This first surveillance study revealed the baseline status of HD related infections in Turkey and showed that CDC National Healthcare Safety Network (NHSN) DE surveillance system can be easily implemented even in a high workload dialysis unit and be adopted as a nationwide DE surveillance program.

Background: The dialysis patient population is at a higher risk for nosocomial infections as well as related negative consequences including hospitalization and death. The CMS and the state of Tennessee mandate reporting of 3 types of dialysis events: positive blood culture, intravenous antimicrobial starts, and pus, redness, or increased swelling at the access site. We explored hospitalization and death outcomes by vascular access types for dialysis events reported to the NHSN for licensed outpatient hemodialysis clinics in Tennessee from 2015 to 2019. Methods: We looked at the frequency of hospitalization and death among those who experienced a dialysis event for 3 types of vascular access: arteriovenous fistula, arteriovenous graft, and tunneled central venous catheter (CVC). Other vascular-access types were excluded due to low usage rates. Odds ratios and confidence intervals were used to quantify the relationship between access type and hospitalization, and access type and death. Pooled analysis was used due to the stable rates of death and hospitalization among access types from 2015 to 2019. Results: From 2015 to 2019, 16,742 dialysis events were reported for the 3 access types: 8,055 dialysis events (48.1%) occurred among those with tunneled CVCs, 7,107 (42.5%) occurred among those with fistulas, and 1,580 (9.4%) occurred among those with grafts. Of the 16,742 dialysis events, 3,420 patients (20.4%) were hospitalized either due or related to their dialysis event; 220 (1.3%) deaths occurred either due to or related to the patient’s dialysis event. The odds of being hospitalized was 1.47 (95% CI, 1.29–1.67) times greater in those with grafts compared to those with fistulas. Patients with tunneled CVCs were 1.30 (95% CI, 1.20–1.41) times greater to be hospitalized compared to those with fistulas. The odds of death was 1.09 (95% CI, 0.9–2.5) times greater in those patient with tunneled CVCs compared to those with fistulas, whereas the odds of death among patients with grafts was 0.73 (95% CI, 0.82–1.43) times the odds of death compared to patients with fistulas. Conclusions: Overall, our findings conclude hemodialysis patients with tunneled CVCs have an increased risk for the negative health outcomes of hospitalization and death when compared to the other access types, supporting previous studies. Additionally, grafts had a higher risk of hospitalization compared to fistulas, but patients with grafts had lower odds of death than those with fistulas. Further investigation is needed to study how the COVID-19 pandemic may have affected the trends of negative health outcomes related to dialysis events.Disclosures: None

Persons receiving outpatient hemodialysis are at risk for bloodstream and vascular access infections. The Centers for Disease Control and Prevention conducts surveillance for these infections through the National Healthcare Safety Network. We summarize 2014 data submitted to National Healthcare Safety Network Dialysis Event Surveillance. Dialysis facilities report three types of dialysis events (bloodstream infections; intravenous antimicrobial starts; and pus, redness, or increased swelling at the hemodialysis vascular access site). Denominator data consist of the number of hemodialysis outpatients treated at the facility during the first 2 working days of each month. We calculated dialysis event rates stratified by vascular access type (e.g., arteriovenous fistula, arteriovenous graft, or central venous catheter) and standardized infection ratios (comparing individual facility observed with predicted numbers of infections) for bloodstream infections. We described pathogens identified among bloodstream infections. A total of 6005 outpatient hemodialysis facilities reported dialysis event data for 2014 to the National Healthcare Safety Network. These facilities reported 160,971 dialysis events, including 29,516 bloodstream infections, 149,722 intravenous antimicrobial starts, and 38,310 pus, redness, or increased swelling at the hemodialysis vascular access site events; 22,576 (76.5%) bloodstream infections were considered vascular access related. Most bloodstream infections (63.0%) and access-related bloodstream infections (69.8%) occurred in patients with a central venous catheter. The rate of bloodstream infections per 100 patient-months was 0.64 (0.26 for arteriovenous fistula, 0.39 for arteriovenous graft, and 2.16 for central venous catheter). Other dialysis event rates were also highest among patients with a central venous catheter. Facility bloodstream infection standardized infection ratio distribution was positively skewed with a median of 0.84. Staphylococcus aureus was the most commonly isolated bloodstream infection pathogen (30.6%), and 39.5% of S. aureus isolates tested were resistant to methicillin. The 2014 National Healthcare Safety Network Dialysis Event data represent nearly all United States outpatient dialysis facilities. Rates of infection and other dialysis events were highest among patients with a central venous catheter compared with other vascular access types. Surveillance data can help define the epidemiology of important infections in this patient population.

Background and Aims Hemodialysis (HD) is the most widely used treatment modality worldwide in the care of patients with end stage renal disease (ESRD). The success of the therapy depends largely on the quality of the VA and its proper functioning, which has a bearing on the patient's quality of life. Vascular access dysfunction remains one of the leading causes of excessive morbidity, mortality, and healthcare costs in this group. A functional vascular access is mandatory to achieve good levels of dialytic efficiency, and it is considered the lifeline of patients on maintenance HD. The ideal vascular access should have specific characteristics among which the most important are the following: ease of placement; delivery of adequate blood flow for effective dialysis; good primary patency rates; low rates of complications and side effects; long-lasting life; and low economic costs. There are 3 types of vascular accesses (VAs): the internal arteriovenous fistula (IAVF); the central venous catheter, which can be tunneled (CVC-T) or not (CVC-nT); and the synthetic vascular graft. Internal arteriovenous fistula is considered the best option because it is safer, more durable, and less expensive. The catheter is essential for emergency onset in HD but is associated with a higher number of infections, higher mortality, and greater costs. Arteriovenous fistulae (AVF) have advantages over arteriovenous grafts (AVG) and central venous catheters (CVC), but whether AVF are associated independently with better survival is unclear. The aim of this study is to determine the vascular access outcomes of ESRD patients on maintenance hemodialysis. Specifically, this study (1) described the clinicodemographic profile of the patients in terms of age, sex, primary etiology of ESRD, employment status, comorbidities, hepatitis status and family history of the disease; (2) determined the vascular access used on the HD patients (AVF/AVG, CVC or IJ; (3) identified interventions performed to maintain vascular access for hemodialysis; (4) determined the categories of the vascular access site; (5) assessed the vascular access outcome; (6) determined the reason and number for vascular access change and the (7) clinical outcome of the HD patients. Method This is a single center, cross-sectional study of ESRD patients on maintenance hemodialysis enrolled in Perpetual Succour Hospital Hemodialysis Unit from April 1, 2021, to November 30, 2023. Results There were 260 hemodialysis patients included, with successful vascular access outcome (73.13%) and were younger (57.2 ± 14.1). Those who had failed vascular access were females (54.2%), unemployed (61.4%) and had diabetes mellitus (50.6%) as the primary etiology of their ESRD. Those with failed vascular access were hypertensive (86.7%), with history of CAD and MI (57.8%) and were having diabetes mellitus (56.6%). Proportion of those with failed and successful vascular access significantly differ among hypertensives $(p = .012)$, diabetics $(p = .039)$, with chronic glomerulonephritis $(p = .011)$, and among those with malignancy $(p = .003)$. Most of those who were alive had successful vascular access (76.8%), however, among those who had failed vascular access died (57.6%). And the association of clinical outcomes (death or not) and failure or success of vascular access is statistically significant, $(p = .001)$. Conclusion Our study showed that failed vascular access were more associated with female gender, diabetes mellitus as the primary etiology of ESRD and with other co-morbid conditions such as hypertension and CAD or MI. Successful vascular outcome were among those of younger age group compared to those whose vascular access failed, probably due to better vascular condition and fewer co-morbidities. As shown in Table 2, type of access, interventions performed, and vascular access site significantly differ among HD patients with failed vascular access outcome and with those who were successful $(p = .001)$Those with failure on the vascular access were changed to CVC (44.6%) while others had changed to IJ (22.9%). Eighty of those with failed vascular (96.4%) access has changed site due to no bruit (65.0%) and thrombosis (33.8%).

Background: Nearly one-third of patients on hemodialysis receive intravenous (IV) antibiotics annually, but national data characterizing antibiotic use in this population are limited. Using NHSN surveillance data for outpatient dialysis facilities, we estimated temporal changes in the rate of IV antibiotic starts (IVAS) among hemodialysis patients as well as the proportion of IVAS that were not supported by a reported clinical indication. Methods: IVAS events were obtained from the NHSN Dialysis Event module between 2016 and 2020, excluding patients who were out of network, receiving peritoneal or home dialysis, or with unspecified vascular access. IVAS unsupported by documentation were defined as new IVAS without a collected or positive blood culture, pus, redness or swelling event, or an associated clinical symptom. Pooled mean rates of total and unsupported IVAS were estimated per 100 patient months yearly and stratified by vascular access type. Differences in IVAS rates by year were estimated with negative binomial regression. Results: Between 2016 and 2020, 7,278 facilities reported 648,410 IVAS events; 161,317 (25%) were unsupported by documentation (Table 1). In 2016, 3,340 (54%) facilities with ≥1 IVAS event reported an IVAS unsupported by documentation, which increased to 4,994 (73%) in 2020. Total IVAS rates decreased by an average of 8.2% annually (95% CI, 7.1%–9.3%; P < .001). The average annual percentage decrease did not differ significantly by vascular access site. The total IVAS rate was lowest in 2020 (2.17 per 100 patient months; 95% CI, 2.18–2.17). IVAS rates in 2020 were greatest for patients with catheter access (4.79 per 100 patient months; 95% CI, 4.75–4.83), followed by graft (1.71 per 100 patient months; 95% CI, 1.68–1.73), and lowest for patients with fistulas (1.30 per 100 patient months; 95% CI, 1.29–1.31). The overall pooled mean rate of unsupported IVAS was 0.64 per 100 patient months (95% CI, 0.63–0.64), which did not significantly change by year (Fig. 1). Conclusions: Total IVAS rates among outpatient hemodialysis patients have decreased since 2016, and rates among catheter patients remain highest compared to patients with fistulas or grafts. However, unsupported IVAS rates did not change, and the proportion of facilities reporting an unsupported IVAS increased annually. Targeted efforts to engage facilities with unsupported IVAS may help improve accurate reporting and prescribing practices.Funding: NoneDisclosures: None

A prospective study of vascular access infections at seven outpatient hemodialysis centers

A multicenter prospective surveillance on dialysis events was carried in 33 dialysis centers in China. Maintenance hemodialysis (HD) outpatients who were dialyzed on the first two days of each month during 2014 were monitored for dialysis events and other infections. During the one-year period, 52,680 patient-months were monitored. Fistula and tunneled or non-tunneled central line were used for 73.70%, 15.70% and 8.85% of vascular access, respectively. There were 773 dialysis events occurred in 671 patients including 589 IV antimicrobial starts, 74 positive blood cultures and 110 local access site infections (LASI). The incidence of dialysis events was 1.47 per 100 patient-months. Among the 74 cases with bloodstream infection (BSI), 38 were access-related BSI (ARB) and there were therefore 148 cases with vascular-related infection (VAI; 38 ARB and 110 LASI). There were 740 cases (1.40 per 100 patient-months) with infections other than BSI and LASI, most (79.19%) of which were respiratory tract infections. For those with dialysis events, there were 425 cases (425/671, 63.34%) admitted to hospital and 12 cases of death (12/671, 1.79%). In conclusion, the surveillance revealed a relatively low incidence of dialysis events and the surveillance may be tailored to target those using central lines in resource-limited settings.

Three years’ experience of dialysis event surveillance

Vital Signs: Central Line–Associated Blood Stream Infections—United States, 2001, 2008, and 2009

Mortality among hemodialysis patients in Europe, Japan, and the United States: Case-mix effects

Background: Dialysis-associated events such as bloodstream infections represent serious complications for hemodialysis patients, with the potential to increase morbidity and mortality. Aims: To assess the impact of implementing a comprehensive bundle of evidence-based practice on reducing dialysis event rates among catheter dialysis patients at Prince Mansour Military Hospital Dialysis Center. Participants and Methods: The study enrolled 111 hemodialysis participants. A comprehensive dialysis event prevention bundle consisting of 6 key components was implemented. Results: Implementation of the dialysis event prevention bundle showed a significant decrease in IV antimicrobial start (p = 0.003), positive blood culture (p = 0.039), and inflammation at the vascular access site eliminated (p = 0.004). There was a positive correlation between IV antimicrobial start and both patients' age (p = 0.005) and the permanent catheter site (p = 0.002). Positive blood culture was significantly correlated with comorbidities (p = 0.000) and patients' age (p = 0.320). A positive correlation between pus, redness, or increased swelling at the vascular access site with comorbidities (p = 0.034), patients' age (p = 0.021), and the permanent catheter site (p = 0.002) was observed. Staff compliance with the dialysis event prevention bundle components has improved regarding hemodialysis catheter disconnection, catheter exit site care, and routine disinfection. Conclusions: Implementation of a comprehensive dialysis event prevention bundle can effectively reduce dialysis event rates and enhance patient safety.