An Exploratory Cost-Effectiveness Analysis of a Novel Tissue Valve Compared with Mechanical Valves for Surgical Aortic Valve Replacement in Subgroups of People Aged 55–64 and 65+ with Aortic Stenosis in the UK

ABSTRACT Objective Exploratory analysis to conceptualize and evaluate the potential cost-effectiveness and economic drivers of using a novel tissue valve compared with mechanical heart valves for surgical aortic valve replacement (SAVR) in people aged 55–64 and 65+ with aortic stenosis (AS) from a National Health Service (NHS) UK perspective. Methods A decision-analytic model was developed using a partitioned survival model. Parameter inputs were obtained from published literature. Deterministic and probabilistic sensitivity analyses (DSA and PSA) were conducted to explore the uncertainty around the parameters. Results The novel tissue valve was potentially associated with higher quality-adjusted life years (QALYs) of 0.01 per person. Potential cost savings were greatest for those aged 55–64 (£408) versus those aged 65+(£53). DSA indicated the results to be most dependent on relative differences in general mortality, procedure costs, and reoperation rates. PSA estimated around 75% of the iterations to be cost-effective at £20,000 per QALY for those aged 55–64, and 57% for those aged 65+. Conclusions The exploratory analysis suggests that the novel tissue valve could be a cost-effective intervention for people over the age of 55 with AS who are suitable for SAVR in the UK.