[1]Shaanxi Provincial Hospital of Traditional Chinese Medicine Xi''''an 710003 China;
[3]Xi''''an Peihua University Xi''''an 710000 China;
[4]Northwest University Xi''''an 710127 China;
[2]Pharmacology Laboratory of Shaanxi Academy of Traditional Chinese Medicine Xi''''an 710003 China;
Danqu capsules; Hypertension; Heart rate; Myocardial tension time index;