Abstract
AIMS: To establish the resource and cost savings from the early use of transjugular intrahepatic portosystemic shunts (TIPS) procedures with ePTFE covered stent-grafts configured for TIPS (SG) compared to endoscopic procedures and pharmaceuticals in high risk patients (Child–Pugh class B/C) with acute variceal bleeding.
BACKGROUND: Endoscopic therapies are currently the primary treatment for bleeding varices, with TIPS used when endoscopic treatment fails or when patients are not amenable to endoscopic intervention. Trials have shown clinical benefit (lower mortality, fewer re-bleeds and lower hepatic encephalopathy (HE)) from the earlier use of TIPS in patients with persistent bleeding. There are currently no published cost-effectiveness analyses of this earlier use.
METHODS: A Markov economic model was developed to measure the incremental resources and costs of early TIPS with SG, compared to endoscopic band ligation (EBL) plus pharmaceuticals, with TIPS as rescue therapy. Clinical data came mainly from published studies including an RCT (Garcia-Pagan 2010), whilst healthcare costs were from UK national databases. Events & costs were modelled over two years.
RESULTS: Using early TIPS with SG compared to EBL plus pharmaceuticals was estimated to save £1,655 per patient over 2 years. The total treatment costs were £6,455 for TIPS and £8,110 for EBL, providing a net saving of £1,655 per patient. Early TIPS and subsequent re-interventions cost £4,332 more than the EBL arm. However, savings were accrued from fewer EBL procedures and pharmaceuticals (saving £3,223); fewer episodes of recurrent bleeding (saving £2,475) and reduced rate of severe HE (saving £290). Modelling 100 patients, mortality was reduced in the early TIPS arm, 28 patients compared to 63 in the EBL plus pharmaceuticals arm. Sensitivity analyses showed the results were sensitive to device costs, frequency of EBL procedures and the relative rates of severe HE per patient. Using TIPS with SG earlier to manage variceal bleeding was cost saving under all sensitivity analyses.
CONCLUSION: The model showed that early utilisation of TIPS with ePTFE covered stent-grafts configured for TIPS was cost saving and improved survival compared to EBL and pharmaceuticals for high risk patients (Child–Pugh class B/C) with acute variceal bleeding.