A Budget Impact Model for the use of Drug-Eluting Stents in Patients with Symptomatic Lower-Limb Peripheral Arterial Disease: An Australian Perspective

Abstract Purpose Improvement in long-term outcomes through innovative, cost-effective medical technologies is a focus for endovascular procedures aimed at treating symptomatic lower-limb peripheral arterial disease (PAD). The advent of drug-eluting stents (DES) has improved symptomatic PAD treatment via a reduction in high rates of target lesion revascularisation (TLR). The present study aimed to compare the 5-year financial impact of treatment with Eluvia, a new paclitaxel-eluting stent, versus treatment with Zilver PTX, a drug-coated stent, among patients in Australia by developing a budget impact model (BIM). Methods A BIM was developed from an Australian public hospital payer perspective using Australian national cost weights (AUD), published literature, and public hospital audit data. Clinical outcomes, including clinically driven TLRs (CD-TLRs), adverse events, and length of stay, were based on the 2-year results of the IMPERIAL trial, which compared Eluvia DES to Zilver PTX. Results Assuming EVP eligibility rate of 80% and DES uses rate ranging from 10 to 28% (superficial femoral artery lesions only), the 5-year model forecasted a treatment population between 14,428 and 40,399 patients. The model estimated 1499–4198 fewer CD-TLRs and 16,515–46,243 fewer hospital days with Eluvia DES use. This translated to 5-year potential savings of $4.3–$12.1 million to the Australian public hospital payer attributable to reduced CD-TLRs for Eluvia DES and $33.1–$92.6 million to Australian public hospitals owing to reduced adverse events and hospital bed days. Conclusion Eluvia DES use as treatment for symptomatic lower-limb PAD could lead to potential savings for the Australian public healthcare system based on improved patient outcomes.

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PP339 A Budget Impact Model Of The EluviaTM Drug-Eluting Stent from The Australian Public Hospital And National Payer Perspective

International Journal of Technology Assessment in Health Care ◽

10.1017/s0266462320001609 ◽

2020 ◽

Vol 36 (S1) ◽

pp. 29-29

Author(s):

Nishath Altaf ◽

Thathya V. Ariyaratne ◽

Adrian Peacock ◽

Irene Deltetto ◽

Jad El-Hoss ◽

...

Keyword(s):

Lower Limb ◽

Public Hospital ◽

Budget Impact ◽

Healthcare Payer ◽

Drug Eluting Stent ◽

Public Healthcare ◽

Impact Model ◽

Drug Eluting ◽

Budget Impact Model ◽

Zilver Ptx

IntroductionImproving long-term outcomes like target lesions revascularizations (TLRs) is a focus for endovascular interventions aimed at treating symptomatic lower-limb peripheral arterial disease (PAD). EluviaTM, a paclitaxel-eluting drug-eluting stent (DES) was shown to further reduce TLRs when compared with the paclitaxel-coated Zilver® PTX® stent in the IMPERIAL trial, a global, randomized controlled study. This budget-impact evaluation investigated cost-savings from Eluvia-use when compared with Zilver PTX, relying on the 12- to 24-month outcomes from the IMPERIAL trial.MethodsA budget-impact model comparing Eluvia and Zilver PTX was developed from the Australian public healthcare payer, and an individual hospital perspective, with a 5-year time-horizon. Observed trial results were applied to each year's incident population and associated costs, and no extrapolation was conducted. The analysis used publicly available Australian national hospital cost data, population estimates, procedural statistics, epidemiological literature, and data from public hospital audits to verify eligible population for endovascular procedures (EVP) including DES. All costs were captured in Australian dollars (AUD), where AUD 1 = USD 0.69 (June 2020).ResultsAssuming 80-percent EVP eligibility, and a DES-use range of 10–28 percent, the 5-year model estimated potential national savings of AUD 4.3–12.1 million (M) [USD 3–8.3M] to the public healthcare payer, driven by reduced TLRs from Eluvia-use compared with Zilver-PTX. The model projected potential national savings of AUD 33.1–92.6M (USD 22.8–63.9M) to individual hospitals through reduced hospital bed days for adverse events (AE). The model forecasted 14,428–40,399 treated patients; 1,499–4,198 fewer TLRs; and 16,515–46,243 fewer hospital days for AE. At a state level, projected hospital savings were: New South Wales AUD 10.9–30.7M [USD 7.5–21.1M]; Victoria AUD 8.4–23.4M [USD 5.8–16.1M]; Queensland AUD 6.5–18.3M [USD 4.5–12.6M]; Western Australia AUD 3.4–9.5M [USD 2.3–6.5M]; South Australia AUD 2.3–6.4M [USD 1.6–4.4M].ConclusionsTreatment of symptomatic lower-limb PAD with the Eluvia DES could lead to potential savings for the Australian healthcare system, at the national, state, and the local hospital level, based on improved patient outcomes.

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