Overview
To investigate the efficacy and safety of Qishenyiqi in patients with microvascular angina pectoris. Long-term follow-up of 1 year will be performed to evaluate the effect of Qishenyiqi on coronary flow reserve and adverse cardiovascular events in patients with coronary microvascular disease.
Eligibility
Inclusion Criteria:
- Repeated chest pain attacks with typical exertional angina pectoris or resting angina pectoris attacks;
- Coronary normal or stenosis < 20%;
- Ischemic depression in ST segment during resting or exercise;
- Blood flow reserve (CFR) of the anterior descending coronary artery < 2.0;
- Subjects or their guardians agreed to participate in this study.
Exclusion Criteria:
- Previous myocardial infarction or PCI or CABG treatment;
- A history of heart failure;
- Severe arrhythmia;
- Refractory hypertension or hypertension accompanied by left ventricular wall thickness > 12 mm;
- Familial hypercholesterolemia;
- Takayasu arteritis, Kawasaki disease or coronary artery malformation;
- Pregnant or nursing, or having the intention to give birth within one year;
- Hepatic or renal dysfunction;
- Allergic to contrast agents or traditional Chinese medicines;
- Patients who participated in clinical research of other drugs within 3 months before being selected.