What are the main tests to diagnose coronary artery disease?

To diagnose coronary artery disease, doctors rely on a combination of examinations that include assessing symptoms and medical history, in addition to blood tests and specialized heart health assessments. These tests include electrocardiogram (ECG), blood tests to evaluate cholesterol and glucose levels, coronary angiography, as well as nuclear or echocardiographic stress tests [1].

Symptom Evaluation and Medical History

Diagnosis of coronary artery disease typically begins with a comprehensive review of your medical and family history, in addition to discussing the symptoms you are experiencing. The doctor may ask about your risk factors, such as lifestyle habits and the potential presence of diseases like high blood pressure, diabetes, or high cholesterol [1]. Symptoms may include chest pain, shortness of breath, or a feeling of unusual fatigue, which may worsen with activity or stress [1].

Laboratory Tests and Initial Heart Assessments

Blood tests are an essential part of the assessment, as cholesterol and glucose levels in the blood are examined [1]. These tests can help identify risk factors that contribute to the development of coronary artery disease. An electrocardiogram (ECG) is usually the first test performed by the doctor, as it measures the heart's electrical activity and can reveal signs of heart muscle damage [2]. Troponin blood tests may also be used to confirm a heart attack if suspected [2].

Advanced Imaging Tests

Imaging tests are used to provide a more detailed view of the coronary arteries and the heart muscle. These tests include:

• Echocardiogram: This test uses sound waves to create images of the heart, which helps in detecting any damage to the heart muscle or other problems [2].
• Coronary Angiography: This procedure involves using a special dye and X-rays to monitor blood flow through the coronary arteries, which helps the doctor determine the extent of the blockage and plan appropriate treatment [2].
• Stress Tests: These include exercise stress testing, nuclear stress testing, and stress echocardiography. These tests help evaluate how the heart responds to effort and determine if there is a lack of blood flow to the heart muscle [2].

Next Steps After Diagnosis

Based on the results of these tests, the doctor will develop a customized treatment plan. This plan may include lifestyle changes, such as following a healthy diet and engaging in regular physical activity, in addition to medications to manage blood pressure, cholesterol, and glucose levels, or to prevent blood clotting [1]. In some cases, medical procedures such as angioplasty or coronary artery bypass surgery may be needed to open or bypass blocked arteries [1]. To learn more about the causes, symptoms, and treatment of coronary artery disease, you can visit Coronary Artery Disease: Understanding Causes, Symptoms, and Treatment for Heart Attack Prevention (Arabic).

Medical references

• Coronary Artery Disease
• Acute coronary syndrome