What do cardiac color ultrasound, electrocardiogram and coronary angiography check respectively?

We think of the heart as a room, and a room includes waterways, circuits, doors, windows, and walls. We regard the coronary arteries as waterways, the physiological discharge of myocardium as lines, and the myocardium and heart valves as walls, doors and windows.

Lao Wang has been suffering from chest tightness and shortness of breath recently. He heard from his neighbors that if he goes to the hospital and does an electrocardiogram, he can tell whether it is a heart problem. After the doctor's examination, he told Lao Wang that not only did he need an electrocardiogram, but he also needed a cardiac color ultrasound. It was best to be hospitalized for a cardiac coronary angiography examination. "What, an electrocardiogram is not enough?" "Is a cardiac color Doppler ultrasound different from an electrocardiogram?" "What is cardiac coronary angiography?" Have you ever asked such a question?

Electrocardiogram. There are three main categories of electrocardiograms, one is conventional electrocardiogram, the other is dynamic electrocardiogram, and the third is exercise treadmill electrocardiogram. Among them, routine electrocardiogram is the most common and most commonly performed routine physical examination for most people. Routine electrocardiogram is a test used to detect the electrical activity of the heart. When there is a heart disease or in the early stages of the disease, the electrical activity of the heart will change. Therefore, an electrocardiogram test can help doctors determine whether the patient has premature beats, atrial fibrillation and other heart rhythms. Abnormal problems can also be used to diagnose myocardial ischemia. Electrocardiogram examination is simple, fast and economical, and is currently used in various departments in hospitals.

Cardiac color ultrasound

Also known as echocardiography, it is equivalent to the doctor's "see-through eye". It can see the structure and size of the heart without opening the chest, and dynamically display the heart. structure, heart beat, and blood flow within the heart.

By measuring the walls of each ventricle, you can reflect whether the heart has ventricular hypertrophy; by observing the condition of the valves, you can understand whether the doors and windows of the house of the heart can open or close normally...

The main purposes of cardiac color ultrasound examination: determine the position of the heart and the relationship between the heart and internal organs; check whether the heart structure is abnormal; evaluate changes in cardiac hemodynamics, measure the flow velocity and pressure difference of each valve orifice, and determine the location and origin of abnormal blood flow in the cardiovascular system, etc. ; Detect pericardial disease; evaluate cardiac function.

Cardiac color ultrasound can diagnose valvular heart disease, congenital heart disease, various primary and secondary cardiomyopathies, and also has certain reference value in the diagnosis of coronary heart disease. It can also identify the type of heart failure (ischemic or congestive heart failure), etc.

Coronary angiography is used to check whether the water pipes in the house are unblocked. It is still the gold standard for diagnosing coronary heart disease.

Coronary arteries are blood vessels that supply blood to the heart. When this blood vessel or its branches become diseased, we will suffer from coronary heart disease, such as myocardial ischemia, angina pectoris, myocardial infarction, etc.

There are often no symptoms when the lesions are mild. Although the electrocardiogram can reflect some lesions during cardiac ischemia, there are still some patients with normal electrocardiograms even if they have coronary heart disease.

For patients with chest pain and chest tightness, especially those with myocardial ischemia on the electrocardiogram, coronary angiography is routinely recommended.

This is the most important examination to determine the location and degree of coronary artery stenosis, and is also the most important basis for formulating a treatment plan for coronary heart disease.