evidence: The dramatic divergence in the prices of stents and pacemakers was the most striking finding from an analysis of what hospitals in five countries pay for cardiac implants. [...] To shed light on the situation, two London-based researchers analyzed survey data collected from hospitals every quarter between 2006 and 2014. The findings, published in Health Affairs, suggest the prices of cardiac implants vary significantly from market to market. [...] The differences in the prices of stents and pacemakers was particularly pronounced. Prices of stents generally trended downward in all countries across the years analyzed in the research paper but the magnitude of the difference between the highest and lowest fees increased.