NPPB and coronary artery disorder: Several studies, along with ours, have found that CAD patients with lower fT3/fT4 ratio tended to have more severe myocardial injury (e.g., higher TnI), more impaired LV mechanics (e.g., lower LVEF, higher NT-proBNP) and higher plasma inflammatory markers (e.g., higher hs-CRP) (20–22).