Biomarkers in Patients With Suspected HFpEF

"This study will investigate the diagnostic utility and performance of:~1. Alternative cut-offs for NT-proBNP to identify HF(pEF) in people with suspected HF and obesity, in whom~2. Novel candidate biomarkers to identify HF(pEF) in people with suspected HF and obesity.~3. Novel candidate biomarkers to identify HF(pEF) in people with suspected HF and NT-proBNP \<125 ng/L~4. The prevalence of HF in people with suspected HF and low NT-proBNP \<125 ng/L).~The diagnosis of heart failure will be determined according to international guidelines, when there are symptoms and/or signs of HF in association with objective evidence of cardiac structural and/or functional abnormalities consistent with the presence of LV diastolic dysfunction/raised LV filling pressures. Non-invasive testing with rest and diastolic stress echocardiography will be used to evaluate for evidence of raised filling pressures, in order to make the study procedures applicable to usual clinical practice."