A heart attack is a myocardial infarction. A gastric tube can be removed if the patient is able to resume eating on his own and there are no stress ulcers or need for gastrointestinal decompression. The patient should follow the doctor’s instructions. Myocardial infarction is an ischemic and necrotizing disease of the myocardium caused by obstruction of the coronary arteries and interruption of blood flow. Myocardial infarction is related to atherosclerosis, heredity, smoking, obesity, dyslipidemia, emotions, weather and other causes. Depending on the location and extent of the blockage, there may be symptoms such as chest tightness, shortness of breath, dyspnea, confusion, shock, and a stressful ulcer in the stomach. A gastric tube may be used when a patient with myocardial infarction has impaired consciousness or other symptoms that interfere with eating and drinking. The gastric tube can be removed when consciousness and swallowing function are restored and there are no stress ulcers or need for gastrointestinal decompression or other conditions that require fasting, so the time to discontinue the use of the gastric tube is related to the individual’s recovery. When patients with myocardial infarction use a gastric tube, it is recommended that the gastric tube be removed under the supervision of a doctor, and it is not recommended to remove it by oneself.