Master Wang is a lean old man, more than seventy years old. Usually very good health, every day adhere to the exercise. But just one night in ’08 he suddenly failed. After 2 weeks, he underwent coronary artery arch surgery, and now it has been almost 3 years, he is recovering very well, and I have become a “forgetful friend”. “He is almost 80 years old, but he started to learn to surf the Internet, type and send me emails. He often asks me questions about coronary heart disease, “Why do I have coronary heart disease? What is bypass about? What will happen if I don’t get a bypass? What should I do now to take care of my body?” I think many of my friends with coronary artery disease may have similar questions, so I am going to give some of the answers I gave him in the hope that they can solve the doubts of coronary artery disease patients. We are used to comparing the heart to the engine of a car, the engine has to burn oil, and the coronary arteries are the pipelines that supply oil to this “engine”. These “lines” walk on the surface of the heart, like a crown, so people call him a coronary artery. These “lines” with a long time, will occur aging, not smooth, “oil” can not go over, the heart “engine” ischemia, this is coronary heart disease. After the heart ischemia can not work properly, the heart will report to the body, “I do not have enough oil, the ‘engine’ to rest!” This often happens when the patient is active, emotional and other increased heart activity, the patient will have angina, rest, or emergency nitroglycerin will relieve. But sometimes, some of the “pipeline” may be completely blocked at once, the blood can not pass at all, then there are serious consequences, the heart “engine” is at risk of failure. This is myocardial infarction. We all know that the narrowing and blockage of the oil circuit of the car engine does not happen within a short period of time. The blockage of the oil circuit is firstly related to the quality of the oil burned in the car; secondly, it is related to the length of time it has been used. The same is true for coronary artery lesions. In fact, coronary artery disease starts at a young age, and coronary artery sclerosis can appear in people as early as under 20 years old. Increased blood lipids, increased blood sugar, smoking, and high blood pressure are all causes of coronary artery disease, and a small percentage of people have a genetic link to the disease. These undesirable factors act on the coronary arteries of the heart for a long time to produce coronary heart disease. Coronary artery bypass surgery is the most classic and effective treatment for coronary heart disease. Coronary artery bypass is a new line DD bridge between the “fuel tank” and the “engine”. In the human body, a section of the good blood vessel is usually taken, bypassing the narrowed coronary artery and connected to the aorta and the distal normal coronary artery, so that the ischemic heart will be supplied with blood again. The “engine” of the heart will be running at high speed again. If the bridge can be built before the heart “engine” is destroyed, the patient’s heart can still reach high speed and can participate in various sports activities as normal people. Patients who have undergone bypass surgery sometimes say, “I had a major heart surgery, I am a serious patient, I can’t do anything now, I have to recuperate”. In fact, this is still a lack of understanding of this disease. The most fundamental problem of coronary heart disease is myocardial ischemia, after the surgery, the problem of myocardial ischemia is solved, the function of the heart will be better, so it is no problem to reach the amount of exercise before the surgery. This is what heart bypass surgery is all about. There are also some patients who will go to the other extreme, “I’m done with the surgery, I’m not sick now, I don’t need to take medication, I don’t need to moderate my life”. In fact, as we said earlier, coronary heart disease is the result of adverse factors acting on the heart vessels for a long time. Although surgery solves the problem of heart ischemia, the underlying causes from which this disease occurs: hypertension, hyperlipidemia, diabetes, smoking, and genetic factors, are not solved by surgery. Moreover, these risk factors may also affect the life expectancy of the bridge. Fortunately, only genetic factors are uncontrollable among these factors (in fact, this is only a very rare case), while the others can be controlled by lifestyle habits or medications. Therefore, in order to maintain a good surgical outcome and slow down the progression of coronary artery disease, these factors must be treated in a targeted manner. After surgery, it is important to follow medical advice, change bad habits, control risk factors and take medication on time. Therefore, coronary heart disease patients should be diagnosed in time, treated reasonably, and risk factors controlled after surgery in order to make the bridge of life more exciting!