Heart failure, a clinical syndrome caused by various heart diseases at an advanced stage, coronary heart disease, hypertension, diabetes until the end of the middle stage, can cause heart problems, especially heart failure. Ding Banghan, director of the emergency department of the provincial Chinese hospital, said that for patients with heart failure and coronary artery disease, drinking water should not be scarce, but also not too much. When the body is dehydrated, the blood viscosity increases, and some people who already have cardiovascular disease are prone to sudden emergencies, thrombosis due to excessive blood viscosity, heart attacks, brain attacks and other problems. But if you drink too much water, especially if you drink an excessive amount of water at once, water will quickly enter the blood, then the blood is not sticky, but the burden on the heart is greatly increased. Healthy people are not affected, but coronary heart disease, heart failure, heart function is not good, then also overload operation, the patient may appear chest tightness, shortness of breath, dripping sweat plus leg weakness and other symptoms, serious life threatening. So, how much water should heart disease and heart failure patients drink every day? Can we learn from the so-called “eight glasses of water a day”? Drinking water is important to “balance”, how much water to drink a day, according to my sweat and urine excretion to determine the amount. For example, in the summer sweat more water to drink, exercise sweat more water to drink …… the so-called “8 glasses of water a day” is only an approximate amount, does not mean absolute, does not represent the situation of each person. Coronary heart disease, heart failure absolutely can not “into more out less”, that is, the total intake of fluid (including the liquid content of the diet and drinking water) generally do not exceed the amount of sweat and urine. You can control the amount of water you drink according to the amount of exercise and urination you do. As for patients with heart failure, especially in the acute stage, if there is water retention, appropriate water control should be carried out, and the physician will have a strict requirement on the amount of water to be drunk, and the patient has to follow the doctor’s instructions. In addition to liquid water, food also contains water, such as porridge, fruits, and dishes that contain a lot of water. Patients with poor heart function should pay more attention to the intake of water, including the intake of the entire fluid. Clinically, for patients in the acute phase of heart failure, doctors usually have strict water restriction requirements. When they are told to drink less water, patients can usually do so, but they often overlook the fact that fruits, beautiful soups, porridge and milk also contain a lot of water, unknowingly overloading the body with water, increasing the burden on the heart and making the condition worse or deteriorating. In addition, the way to drink water also has to be careful, either do not drink, or a large glass of water in one gulp is certainly not – especially for these patients with heart disease, once diagnosed with heart failure. That will lead to rapid entry of water into the body, a large number of absorption in the gastrointestinal tract, so that the blood becomes thin, blood volume increases, the workload of the heart will also increase, thereby increasing myocardial oxygen consumption, and even induce heart failure. It is recommended to drink a small amount at a time and to drink water in several times.