What is the gold standard for diagnosing myocardial ischemia?

The gold standard for diagnosing myocardial ischemia is generally coronary angiography. The detailed explanation is as follows:

Myocardial ischemia refers to a pathological condition in which the blood vessels supplying the heart muscle become diseased, leading to reduced blood perfusion and oxygen supply to the myocardium, abnormal energy metabolism, and inability to sustain normal cardiac function. This condition may cause symptoms such as chest tightness, chest pain, and palpitations. Coronary angiography uses imaging techniques to determine whether there are any abnormalities in the coronary arteries. During the procedure, an angiographic catheter is inserted into the radial artery of the arm or the femoral artery in the leg and advanced to the coronary arteries. A contrast agent is then injected intravenously, allowing the coronary arteries to be clearly visualized under X-ray. This enables physicians to clearly observe whether the coronary arteries are narrowed or blocked, thereby determining the presence of myocardial ischemia.

Patients with myocardial ischemia may take medications such as isosorbide mononitrate sustained-release tablets or Diao Xin Xue Kang capsules as directed by their physician. In daily life, they should quit smoking and alcohol, avoid unhealthy lifestyle habits, ensure adequate rest, and avoid excessive熬夜 (staying up late) and fatigue. If any discomfort occurs, medical attention should be sought promptly.