Associations Between Initial Dialysis Access Types and Death from Dialysis Withdrawal in Incident Patients with Kidney Failure

Overview

Journal Clin Kidney J

Publisher Oxford University Press

Specialty Nephrology

Date 2025 Mar 6

PMID 40046820

Authors

Jenny H C Chen

David W Johnson

Matthew A Roberts

Mark A Brown

Frank Brennan

Germaine Wong

Hicham Cheikh Hassan

Wing-Chi G Yeung

Alice Kennard

Christopher E Davies

Neil Boudville

Charmaine E Lok

Wai H Lim

Affiliations

Soon will be listed here.

Abstract

Background: Patients receiving haemodialysis via a central venous catheter (HD-CVC) have been shown to have an increased risk of all-cause mortality. It is unclear whether death from dialysis withdrawal is associated with the high mortality risk observed in patients initiated on HD-CVC.

Methods: Using the Australia and New Zealand Dialysis and Transplant (ANZDATA) Registry, we examined the association between initial dialysis access [HD-CVC, haemodialysis via arteriovenous fistula (HD-AVF), and peritoneal dialysis (PD) via PD catheter (PD-PDC)] and death from dialysis withdrawal in adult patients starting dialysis in Australia between 2005 and 2022, analysed by time-stratified adjusted Cox regression with propensity score-matched cohorts.

Results: Of 47 412 incident patients followed for a median of 2.65 years (interquartile range 1.19-4.87), 8170 (17%) died from dialysis withdrawal. Compared with patients initiated on HD-AVF, patients initiated on HD-CVC were more likely to experience death from dialysis withdrawal in the first 3 years after dialysis initiation, but not after 3 years [adjusted hazard ratios 2.43 (95% confidence interval 1.95-3.02), 2.06 (1.67-2.53), 1.57 (1.40-1.76), and 1.06 (0.97-1.15) for 0-6 months, >6-12 months, >1-3 years, and >3 years after dialysis initiation, respectively]. Comparison between patients initiated on HD-CVD and PD-PDC showed similar estimates. No difference in withdrawal risk was observed between patients initiated on HD-AVF and PD-PDC.

Conclusions: Patients initiated on HD-CVC were twice as likely to experience early death from dialysis withdrawal compared with patients who had initiated dialysis with HD-AVF or PD-PDC. The increased risks diminished over time and were not observed after 3 years on dialysis.

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