Yong Pey See1,2, Yeoungjee Cho1,3,4, Elaine M Pascoe3,4, Alan Cass5, Ashley Irish6,7, David Voss8, Kevan R Polkinghorne9, Lai Seong Hooi10, Loke-Meng Ong11, Peta-Anne Paul-Brent3,4, Peter G Kerr9, Trevor A Mori7, Carmel M Hawley1,3,4, David W Johnson1,3,4, Andrea K Viecelli1,3,4. 1. Department of Nephrology, Princess Alexandra Hospital, Brisbane, Australia. 2. Department of Renal Medicine, Tan Tock Seng Hospital, Singapore. 3. Australasian Kidney Trial Network, School of Medicine, University of Queensland, Brisbane, Australia. 4. Translational Research Institute, Brisbane, Australia. 5. Menzies School of Health Research, Charles Darwin University, Darwin, Australia. 6. Department of Nephrology, Fiona Stanley Hospital, Perth, Australia. 7. Medical School, University of Western Australia, Perth, Australia. 8. Middlemore Renal Department, Counties Manukau Health, Auckland, New Zealand. 9. Department of Nephrology, Monash Medical Centre, Melbourne, Australia. 10. Department of Medicine and Hemodialysis Unit, Hospital Sultanah Aminah, Johor Bahru, Malaysia. 11. Department of Nephrology, Penang Hospital, Georgetown, Malaysia.
Abstract
Background: An autologous arteriovenous fistula (AVF) is the preferred hemodialysis vascular access, but successful creation is hampered by high rates of AVF failure. This study aimed to evaluate patient and surgical factors associated with AVF failure to improve vascular access selection and outcomes. Methods: This is a post hoc analysis of all participants of FAVOURED, a multicenter, double-blind, multinational, randomized, placebo-controlled trial evaluating the effect of fish oil and/or aspirin in preventing AVF failure in patients receiving hemodialysis. The primary outcome of AVF failure was a composite of fistula thrombosis and/or abandonment and/or cannulation failure at 12 months post-AVF creation, and secondary outcomes included individual outcome components. Patient data (demographics, comorbidities, medications, and laboratory data) and surgical factors (surgical expertise, anesthetic, intraoperative heparin use) were examined using multivariable logistic regression analyses to evaluate associations with AVF failure. Results: Of 536 participants, 253 patients (47%) experienced AVF failure during the study period. The mean age was 55±14.4 years, 64% were male, 45% were diabetic, and 4% had peripheral vascular disease. Factors associated with AVF failure included female sex (odds ratio [OR], 1.79; 95% confidence interval [CI], 1.20 to 2.68), lower diastolic BP (OR for higher DBP, 0.85; 95% CI, 0.74 to 0.99), presence of central venous catheter (OR, 1.49; 95% CI, 1.02 to 2.20; P=0.04), and aspirin requirement (OR, 1.60; 95% CI, 1.00 to 2.56). Conclusions: Female sex, requirement for aspirin therapy, requiring hemodialysis via a central venous catheter, and lower diastolic BP were factors associated with higher odds of AVF failure. These associations have potential implications for vascular access planning and warrant further studies.
Background: An autologous arteriovenous fistula (AVF) is the preferred hemodialysis vascular access, but successful creation is hampered by high rates of AVF failure. This study aimed to evaluate patient and surgical factors associated with AVF failure to improve vascular access selection and outcomes. Methods: This is a post hoc analysis of all participants of FAVOURED, a multicenter, double-blind, multinational, randomized, placebo-controlled trial evaluating the effect of fish oil and/or aspirin in preventing AVF failure in patients receiving hemodialysis. The primary outcome of AVF failure was a composite of fistula thrombosis and/or abandonment and/or cannulation failure at 12 months post-AVF creation, and secondary outcomes included individual outcome components. Patient data (demographics, comorbidities, medications, and laboratory data) and surgical factors (surgical expertise, anesthetic, intraoperative heparin use) were examined using multivariable logistic regression analyses to evaluate associations with AVF failure. Results: Of 536 participants, 253 patients (47%) experienced AVF failure during the study period. The mean age was 55±14.4 years, 64% were male, 45% were diabetic, and 4% had peripheral vascular disease. Factors associated with AVF failure included female sex (odds ratio [OR], 1.79; 95% confidence interval [CI], 1.20 to 2.68), lower diastolic BP (OR for higher DBP, 0.85; 95% CI, 0.74 to 0.99), presence of central venous catheter (OR, 1.49; 95% CI, 1.02 to 2.20; P=0.04), and aspirin requirement (OR, 1.60; 95% CI, 1.00 to 2.56). Conclusions: Female sex, requirement for aspirin therapy, requiring hemodialysis via a central venous catheter, and lower diastolic BP were factors associated with higher odds of AVF failure. These associations have potential implications for vascular access planning and warrant further studies.
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