1.Is it dangerous to have cardiac vascular surgery? With the continuous development of medical science and technology, the dangers of cardiac surgery are gradually decreasing. The mortality rate of common cardiac surgery is now extremely low. The mortality rate for complex and serious heart surgery is somewhat higher, which means that the vast majority of patients will have a good outcome from surgery. Doctors will talk to patients and their families about all the risks that can occur during surgery, depending on the patient’s specific situation. As a patient, you should always be confident and optimistic about the surgery. You should know that confidence and courage are one of the important factors to overcome the disease. 2.What do I need to do before the surgery? In addition to maintaining an optimistic and confident mental state, strengthening nutrition, and getting good sleep to maintain good physical strength, practicing deep breathing and coughing are two of the most important things that play an important role in preventing incomplete lung expansion and retention of secretions during your recovery period after surgery. These exercises should be done regularly before surgery, 4-6 times a day. By doing these exercises, you will feel much easier when you do them after surgery. After surgery, you will feel strained to do these exercises due to wound pain, but you must insist on them to facilitate postoperative recovery and reduce complications. 3.How long will the patient be treated in the care unit after surgery? Generally, they will stay in the care unit for 1-2 days and then be transferred back to the general ward. After returning to the ward, they will continue to receive focused care and their condition will get better day by day. For more serious or complicated surgeries, patients may stay in the ward for a longer period of time until their condition is stabilized. 4.Can I drink water after surgery? You can drink a small amount of water 3-4 hours after the tracheal tube is removed. Sometimes you may feel a little sore in your throat during the first period of extubation, but it will get better after a few days. 5.When do I start to eat after the operation? Generally, you can eat a liquid or semi-liquid diet 5-6 hours after the tracheal tube is removed. You can eat normal food on the 4th-5th day. If you don’t feel hungry after surgery, please don’t be anxious, it’s normal, and your appetite will increase gradually with appropriate activities.