Postoperative patients in the care unit how to cooperate with treatment: postoperative cardiac surgery patients due to the needs of the condition, the oral cavity may have a tracheal intubation, the tracheal intubation connected to the ventilator to assist patients breathing, to ensure that the patient oxygen supply, until the patient’s voluntary breathing back, muscle strength recovery, the condition of relative stability after the removal. Electrodes will be placed on the patient’s chest to monitor electrocardiogram changes and heart rate and rhythm. In addition, two drainage tubes will be left in the patient’s chest to drain fluid from the pericardium and mediastinum after surgery. In addition, the patient will have a pressure measuring tube in the wrist area, a urinary catheter, etc. Since there are many tubes in the patient’s body, it may cause tension and discomfort to the patient, but these are very important for the patient’s postoperative monitoring, so the patient should not move around or pull out any of the tubes casually after waking up, and should cooperate with the nurse to keep the position of various monitoring instruments and various indwelling tubes fixed.