1. The diagnosis of coronary heart disease requires coronary angiography, which is the gold standard for the diagnosis of coronary heart disease. The contrast agent used in the examination is harmful to the kidney, but it is not important whether the patient has been on hemodialysis for many years. Do it if you want, but you still have to go to the hospital to ask.

2. In fact, from the patient's symptoms, relief methods, onset time, we can still consider the diagnosis of coronary heart disease, without angiography, with little pain. After all, angiography is also invasive, and dialysis is already very uncomfortable. Moreover, from the time of onset, variant angina pectoris is likely to be coronary artery spasm. Because patients often have hemodialysis in the hospital, they can have an ECG examination immediately when they have an attack, or if they have an attack every day, they can have a 24-hour dynamic ECG examination to understand the ECG at the time of the attack, or they can be diagnosed.

3. Whether the stent is needed depends on the imaging results. Some patients only have coronary artery spasm, and the stenosis is not serious, so it is hard to say before examination.

I hope it helps you.