According to the information provided, the diagnosis is not clear at present. The purpose of angiography is to determine whether there is coronary heart disease and its severity. Without angiography, it is uncertain whether it is necessary and appropriate to implant stents. You can ask the doctor for details.

(Dr. Liu Qigong, tongji hospital, Wuhan, solemnly reminds me: because I can't see the patient face to face, I can't fully understand the condition. The above suggestions are for reference only. Please go to the hospital for specific diagnosis and treatment under the guidance of a doctor! )