Temporary Vascular Catheters Research Articles

Non-tunneled haemodialysis catheter-related blood stream infections and associated factors among first time haemodialysis patients: a prospective study from a tertiary care hospital in Sri Lanka

BackgroundA significant number of patients require non-tunneled haemodialysis catheters (NTHCs) in the event of an urgent need for immediate haemodialysis in developing countries. Catheter-related bloodstream infections (CRBSIs) are a major concern in haemodialysis, but there is a lack of local epidemiological data. This study aimed to determine the incidence of CRBSI, causative agents and associated risk factors in a tertiary care hospital in Sri Lanka.MethodsA prospective study was conducted at the dialysis unit of Colombo South Teaching Hospital, Sri Lanka from December 2019 to August 2020. Adult patients who had haemodialysis for the first time with NTHCs were included.ResultsOf 149 dialysis patients (104—jugular vein and 45—femoral vein, mean age 58 ± 13.7 years, mean duration of catheterization 7.9 ± 3.4 days), the incidence of CRBSI was 13.58 per 1000 catheter days. Serum albumin levels, capillary blood sugar levels at admission, haemoglobin levels and duration of catheterization were significantly associated with CRBSI. Prescence of diabetes and patients with ESRD who started routine haemodialysis had a significantly higher risk of CRBSI. Gram-positive bacteria were the most common microorganisms associated with CRBSI (87.5%).ConclusionsOur results show high rates of infection with temporary vascular catheters in Sri Lanka, mainly due to Gram-positive bacteria. Diabetes mellitus, duration of catheterisation, low serum albumin, haemoglobin level and CBS on admission were identified as significant risk factors for CRBSI. Management strategies tailored to specific centers should be established in the nation to optimise catheter care and to monitor local microbiology for appropriate empirical antimicrobial treatment.

Economic evaluation of urgent-start peritoneal dialysis versus urgent-start hemodialysis in the United States.

Patients presenting late in the course of kidney disease who require urgent initiation of dialysis have traditionally received temporary vascular catheters followed by hemodialysis. Recent changes in Medicare payment policy for dialysis in the USA incentivized the use of peritoneal dialysis (PD). Consequently, the use of more expeditious PD for late-presenting patients (urgent-start PD) has received new attention. Urgent-start PD has been shown to be safe and effective, and offers a mechanism for increasing PD utilization. However, there has been no assessment of the dialysis-related costs over the first 90 days of care. The objective of this study was to characterize the costs associated with urgent-start PD, urgent-start hemodialysis (HD), or a dual approach (urgent-start HD followed by urgent-start PD) over the first 90 days of treatment from a provider perspective. A survey of practitioners from 5 clinics known to use urgent-start PD was conducted to provide inputs for a cost model representing typical patients. Model inputs were obtained from the survey, literature review, and available cost data. Sensitivity analyses were also conducted. The estimated per patient cost over the first 90 days for urgent-start PD was $16,398. Dialysis access represented 15% of total costs, dialysis services 48%, and initial hospitalization 37%. For urgent-start HD, total per patient costs were $19,352, and dialysis access accounted for 27%, dialysis services 42%, and initial hospitalization 31%. The estimated cost for dual patients was $19,400. Urgent-start PD may offer a cost saving approach for the initiation of dialysis in eligible patients requiring an urgent-start to dialysis.

Peritoneal dialysis catheter placement by interventional radiologists.

Peritoneal dialysis catheter placement by interventional radiologists.

Fistula use after concurrent arteriovenous fistula formation and Tenckhoff catheter insertion

A significant proportion of peritoneal dialysis (PD) patients will have abrupt technique failure requiring conversion to haemodialysis, often using temporary vascular catheters as bridging access. However, vascular catheter use has been associated with increased mortality and great effort has been made to reduce their use. Just under two decades ago, a trial of dual arteriovenous fistula (AVF) formation and Tenckhoff catheter insertion reported only 4% of those in whom back-up fistulae were formed ever used them. Patient demographic, surgical technique and fistula care over those decades have changed substantially, potentially making this practice feasible. Thirty-five selected patients at Concord Repatriation and General Hospital had AVF formed at the time of Tenckhoff insertion and were entered prospectively into a vascular access database. We retrospectively examined this database with a median follow up of 345 days (interquartile range 183-658). Thirty-one per cent of all patients used the preformed AVF, and a further 19% who were still on PD had clinically functioning AVF. The vast majority (62%) had abrupt PD technique failure. This is a marked difference to dated reports of AVF use after concurrent PD and AVF formation. It raises the possibility that the formation of back-up fistula may be another method to reduce the need for vascular catheter use.

Effect of Temporary Catheter and Late Referral on Hospitalization and Mortality During the First Year of Hemodialysis Treatment

Late referral (LR) to dialysis therapy has been associated with poor outcomes in people with end-stage renal disease. This had been ascribed to the frequent use of temporary vascular catheters (TVCs) in LR patients. The effects of LR and TVC on the outcomes of an incident hemodialysis population (n = 101) were investigated. There was a higher incidence of vascular access infection, longer period of hospitalization, and lower survival in TVC and LR groups, compared with arteriovenous fistula and early referral (ER) groups, respectively. Late referral patients had higher number of hospitalizations than ER patients. In univariate analysis, LR (hazard ratio [HR] 10.8, P = 0.02) and albumin (HR 0.23, P < 0.0001) were associated with mortality. Late referral and body mass index were associated with the increased risk of hospitalization in univariate analysis. In multivariate analysis, LR was the only risk factor associated with hospitalization (HR 3.51, P = 0.002). In conclusion, LR was associated with increased risk of mortality and increased risk of hospitalization independently of the presence of a TVC.

Temporary Vascular Catheters for Hemodialysis: A 3-Year Prospective Study

Temporary hemodialysis catheters are necessary in patients with uremia, but complications associated with these catheters represent one of the most important sources of morbidity among ESRD patients. There is no general agreement about the optimal venous access for insertion of a central venous catheter, while risk factors of catheter related complications have not been entirely elucidated. One hundred and seven consecutive patients who required a temporary hemodialysis catheter were prospectively examined. Catheters were placed in 107 consecutive patients (66 right jugular (JC), 41 right femoral (FC)) and maintained in situ for a cumulative total of 2101 days. Early complications (puncture site hemorrhage, hematoma formation, artery puncture) were infrequent, without clinical sequelae. The main late complication was catheter related bacteremia (CRB). There were 16 episodes of CRB (JC-10; FC-6) and Staphylococcus aureus was the most frequently isolated cause of CRB. The mean catheter duration before the onset of CRB was 19.9 and 18.2 days for JC and FC, respectively. Duration of catheter use, and the number of hemodialyses significantly increased the risk for CRB. Actuarial survival for FC was significantly worse than for JC, while Cox proportional hazard models revealed that the femoral site, chronic renal failure and kidney transplantation increased the risk of catheter failure significantly. CRB was the most common late complication. Its frequency was similar in JC and FC. The main risk factors for development of CRB were duration of catheter use and the number of performed dialyses. Cumulative hazard of CRB was significantly magnified 3 weeks after insertion for both JC and FC, but actuarial survival with JC was significantly longer.