The Essential Diagnostic Tests for Coronary Heart Disease

Coronary heart disease (CHD) requires accurate diagnosis to determine the severity and appropriate treatment. Various diagnostic tools are available to evaluate the condition of the coronary arteries and heart function. Below are the most commonly used and effective methods for detecting coronary heart disease:

Coronary Angiography: The Gold Standard

Coronary angiography is widely regarded as the most reliable test for diagnosing coronary heart disease. This invasive procedure allows doctors to visualize the coronary arteries and assess the degree of blockage or narrowing. If the narrowing of the artery reaches or exceeds 50%, it is typically indicative of coronary heart disease. However, a stent placement is generally considered only when the blockage exceeds 75%, as this level of obstruction significantly impacts blood flow to the heart muscle.

Coronary CT Angiography (CTA): A Non-Invasive Alternative

Coronary CT angiography (CTA) offers a less invasive approach to evaluating coronary artery health. During this procedure, contrast dye is injected intravenously, and a high-resolution CT scanner captures detailed images of the heart's blood vessels. CTA is especially beneficial for patients with moderate risk or those experiencing symptoms that may be related to heart issues, such as chest pain accompanied by anxiety or stress. It provides a clear view of any narrowing or plaque buildup in the arteries without the need for catheter insertion.

Additional Diagnostic Tools

Beyond the primary imaging techniques, other tests can also aid in diagnosing coronary heart disease. One such method is myocardial perfusion imaging, also known as nuclear stress testing. This test evaluates blood flow to the heart muscle during rest and physical activity. By highlighting areas of reduced blood flow, it helps identify regions of the heart that may be affected by narrowed or blocked arteries.

In conclusion, a combination of advanced imaging techniques and functional assessments plays a crucial role in diagnosing coronary heart disease. Early detection through these tests can lead to timely intervention, improved outcomes, and better heart health management.