The UK Heart Valve Registry web-tool

Introduction The UK Heart Valve Registry (Taylor, 1997) was established in 1986, but funding was withdrawn for this project in 2004. The SCTS has collected implant data through the National Adult Cardiac Surgery Audit (NACSA) registry. An interactive web tool is developed that allows users to analyse trends and long- term survival by prosthesis manufacturer, model, valve, and time period. Materials and Methods In addition to clinical data collected in the NACSA registry, valve name and model data is also recorded. However, this data is in free-text format. An algorithm is developed to map each AVR record to brand and model. An interactive web tool is developed using R-Studio Shiny. Trends are shown using Google Charts. A reactive Kaplan-Meier plot allows for survival curve display and comparison using record linkage to the ONS database. Results The tool currently exists for the aortic valve. There were >8000 different entries in the database, which mapped to ~100 valves. Missing data or completely unmatchable valves account for ~17% of the data. In total there is data on >87,000 AVR implants. The web tool allows access to a number of interesting trends about the implantation rates, market share dynamics and survival data. We will demonstrate the app live at the meeting presentation. Discussion Following the PPI breast implant saga, there has been an increased focus on the monitoring of medical devices. There are a range of prostheses and sub- prostheses, with novel technology emerging. It is important to be able to track and monitor these prostheses. This web tool, which is still in development, begins to address these issues. In time this tool will be expanded to cover other valves and repair devices. Conclusion The UK Heart Valve Registry was disbanded a decade ago, leaving a large gap in the knowledge of the valve market and outcomes. Using routinely collected data and modern web app development tools, we can explore this data. References Taylor K. The United Kingdom Heart Valve Registry: the first 10 years. Heart. 1997 April; 77(4): 295–296