Geriatric-Cardiovascular Department, First Hospital of Xi'an Jiaotong University, Xi'an 710061, China;
Geriatric-Cardiovascular Department, First Hospital of Xi'an Jiaotong University, Xi'an 710061, China;
Geriatric-Cardiovascular Department, First Hospital of Xi'an Jiaotong University, Xi'an 710061, China;
ouabain; endothelium; hypertension; potassium channels;