Novel Vascular Biomarkers Behaviour and Clinical Value in Heart Failure and CRT

The purpose of this study is to understand the behaviour of certain blood markers in patients with heart failure who undergo a cardiac device implantation procedure called cardiac resynchronization therapy (CRT). CRT is an effective treatment for heart failure, but up to 30% of people do not respond and have poor outcomes (1,2). Despite extensive investigation, identifying these patients continues to be a challenge. The study intends to describe the changes in these blood markers before and after CRT and to examine any potential clinical value. The idea behind the study is that these blood markers alter in heart failure and change with CRT implantation. Furthermore the pattern of marker expression before implant and after may predict response and outcome.