Common medication for heart failure patients does not increase activity level

Heart failure patients with preserved ejection fraction (HFpEF) -- where the heart becomes stiff and cannot relax or fill properly -- did not have increased exercise tolerance after taking isosorbide mononitrate, compared to a placebo, according to a study presented today at the American Heart Association's Scientific Sessions 2015. The findings come from the National Heart, Lung, and Blood Institute's Heart Failure Clinical Research Network and are also published in the New England Journal of M...