Cephalic arch stenosis: angioplasty to preserve a brachiocephalic fistula or new brachiobasilic fistula?: a cost-effectiveness study

摘要

Background: Our aim was to evaluate the cost-effectiveness of repeat angioplasty versus new brachiobasilic fistula (BBF) in patients with symptomatic cephalic arch stenosis (CAS). Methods: Patients presenting with symptomatic CAS (n?=?22) underwent angioplasty. They were compared to patients undergoing BBF creation (n?=?51). Primary outcomes were functional primary arteriovenous fistulae patency at 3, 6 and 12 months. Data were collected on number of interventions, alternative accesses and hospital days for access-related complications. Quality of life was assessed using Kidney Disease Quality of Life-36 scores. Decision tree, Monte Carlo simulation and sensitivity analysis permitted cost-utility analysis. Healthcare costs were derived from Department of Health figures and are presented as cost (￡)/patient/year, cost/access preserved and cost/quality of life-adjusted year (QALY) for each of the treatment strategies. Results: Functional primary patency rates at 3, 6, 12 months were 87.5%, 81% and 43% for repeated angioplasty and 78%, 63% and 41% for BBF. The angioplasty cohort required 1.64?±?0.23 angioplasties/patient and 0.64?±?0.34 lines/patient. BBF required 0.36?±?0.12 angioplasties/patient and 1.2?±?0.2 lines/patient. Patients in the BBF cohort spent an additional 0.9 days/year in hospital due to access-related complications. Mean cost/patient/year in the angioplasty group was ￡5247.72/patient/year versus ￡3807.55/patient/year in the BBF cohort. Mean cost per access saved was ￡11,544.98 (angioplasty) versus ￡4979.10 (BBF). Average cost per QALY was ￡13,809.79 (angioplasty) versus ￡10,878.72 per QALY (BBF). Conclusions: CAS poses a difficult management problem with poor outcomes from conventional angioplasty. Optimal management will depend on patient factors, local outcomes and expertise, but consideration should be given to creation of a new BBF as a cost-effective means to manage this difficult problem.