The medical term UA refers to unstable angina, which is one of the more complex forms of coronary artery disease and is also attributed to a form of acute coronary syndrome. Acute coronary syndromes include two forms of infarction and unstable angina, from which it can be seen that the degree of risk of unstable angina is consistent with the degree of risk of acute myocardial infarction. In this group of people, if there is no timely clinical intervention, medication, or even surgical treatment of the diseased vessel, it is very easy to progress to an acute myocardial infarction. Clinically unstable angina mainly includes lying angina, resting angina, variant angina, primary angina, worsening angina and so on, the specific patient belongs to which category, you can go to the hospital to consult with the cardiology department of the specialized doctors. If the patient is clinically diagnosed with unstable angina pectoris, he should take medication in a timely manner and undergo coronary angiography or stent implantation to deal with the diseased blood vessels if necessary.