Patients with cardiovascular disease should be registered with cardiology or neurology, as follows: 1. Cardiology: The most common diseases include arrhythmia, coronary artery disease, and part of heart failure and cardiomyopathy. Patients with arrhythmias manifesting as panic and palpitations need an electrocardiogram or 24-hour ambulatory ECG monitoring. If coronary artery disease is suspected, a complete examination including electrocardiogram and, if necessary, cardiac angiography or cardiac CT will be performed to determine whether there is a narrowing of blood vessels. If heart failure or cardiomyopathy is suspected, a cardiac ultrasound is needed to determine whether there are changes in the structure and size of the heart, as well as the ejection capacity of the heart. 2. neurology: cerebrovascular disease requires a neurology registration, and the more common diseases in neurology include stroke, such as ischemic stroke or hemorrhagic stroke, which is often referred to as cerebral infarction, cerebral blood supply deficiency, or part of cerebral hemorrhage. The tests that need to be completed are brain CT, brain MRI, and intracranial Doppler flowmetry.