EDN1 and acute coronary syndrome: The results of a study on 130 patients with acute coronary syndrome (ACS) after PCI for 12 weeks showed that on the basis of secondary prevention of CHD, patients treated with Danhong injections (20 ml Danhong added in 5% glucose 100 ml/0.9% sodium chloride, 100 ml, gtt, qd, 1x/wk) combined with Naoxintong capsules (4 grains, tid) had better clinical outcomes and no obvious adverse reactions, while the levels of endothelin-1 (ET-1) and vWF decreased (Zhao et al., 2018).