Abdominal pain, which almost everyone has experienced, is one of the most common symptoms of gastrointestinal disorders. Some people think that abdominal pain is a minor problem that can be tolerated, but sometimes abdominal pain is not that simple. Abdominal pain can be caused by abdominal organ diseases, extra-abdominal diseases and systemic diseases, and there are two kinds of acute abdominal pain and chronic abdominal pain. Acute abdominal pain has a rapid onset and short duration, mostly caused by internal or external abdominal organ diseases, and can be accompanied by nausea, vomiting and other symptoms. Acute abdominal pain is the most common reason for emergency department visits and the most complex clinical symptom, and abdominal pain in the elderly is a sign of serious disease, with the risk of life-threatening if misdiagnosed and mistreated. These acute abdominal pain caused by cardiovascular system diseases are the most dangerous, it is necessary to understand the “fatal acute abdominal pain”, if the following similar performance, do not simply think that abdominal pain is a simple digestive system diseases: 1, myocardial infarction: the most fatal thing caused by acute myocardial infarction abdominal pain, about 8% of myocardial infarction cases. of cases. In the early stages of the infarction can be manifested as sudden onset of severe pain in the upper abdomen, accompanied by nausea and vomiting, which can be very easily mistaken for gastrointestinal disease or cholecystitis. Therefore, middle-aged and elderly patients with a previous history of coronary artery disease and angina, sudden onset of severe upper abdominal pain, and even a few patients can have no history of coronary artery disease, so persistent severe abdominal pain must insist on an electrocardiogram to exclude acute myocardial infarction, and the electrocardiogram room is the easiest and most effective way to exclude heart attacks. 2, angina pectoris: similarly there is angina pectoris may also have abdominal pain. Angina when the coronary blood flow is reduced, myocardial ischemia, hypoxia, excessive accumulation of metabolites in the myocardium, such as lactic acid, etc., stimulate the afferent nerve endings of the autonomic nerves within the heart, producing painful sensations, manifested as epigastric pain, which often shows activity-related, rest can be relieved, and a few will show resting epigastric pain, which is easily misdiagnosed as acute gastroenteritis. Because the pain of these diseases are visceral nerve conduction. 3, abdominal aortic aneurysm: usually occurs with a previous history of atherosclerosis. Pulsating masses palpable in the abdomen and low back pain are the most common manifestations of aortic aneurysm rupture. CT examination can clarify this. 4, aortic coarctation: sudden onset of severe pain, usually chest pain is common, but also low back pain and abdominal pain manifestations, can radiate to the lower extremities, aortic coarctation pain site can sometimes suggest the site of the tear. Inconsistent pulsation of the radial artery or dorsalis pedis artery bilaterally, significantly weakened or absent pulsation on one side, and a difference in blood pressure of more than 10 mmHg between the limbs bilaterally are characteristic manifestations of this disease. In middle-aged and elderly patients with previous hypertension, when there is persistent tearing abdominal pain with low back pain and simultaneous inconsistent pulsation of bilateral dorsalis pedis arteries, this condition should be especially considered, and more or less CT examination is needed to further confirm the diagnosis. 5, mesenteric thrombosis: usually also with persistent abdominal pain disproportionate to the signs class nausea and vomiting as the first symptom, pain medication is ineffective, if not treated in time, it will develop into intestinal necrosis or even multi-organ failure and death. Patients with a past medical history of atrial fibrillation who develop the above symptoms should be highly suspected of embolism-induced intestinal necrosis. In addition, the following abdominal pains should be treated as soon as possible: 1. abdominal pain that appears suddenly and is severe and lasts for more than 6 hours indicates that the abdominal pain is not caused by simple gastrointestinal spasm, and there is no trend of spontaneous relief, so medical attention is needed. 2, abdominal pain with vomiting blood, or dark stools, dark red stools, this is the performance of gastrointestinal bleeding, and the amount is also relatively large. 3, abdominal muscle tension, can not be touched, once touched, the pain is severe, this is a typical peritonitis performance, common perforation of the digestive tract, appendicitis perforation, etc. 4, can not defecate, no fart, especially at the same time with vomiting, this is a typical intestinal obstruction, intestinal obstruction performance. 5, abdominal pain and fever, abdominal pain with jaundice, dizziness, fainting, rapid heartbeat, pale face and other situations that cannot be resolved by yourself and cannot be judged, you need to seek medical attention as soon as possible. In summary, abdominal pain is a relatively common disease, if severe and persistent abdominal pain occurs, must not be ignored, especially if combined with cardiovascular disease, dyslipidemia, hyperglycemia friends, must be promptly to the hospital for examination. The differential diagnosis of acute abdominal pain is not easy, so a comprehensive examination: electrocardiogram, blood routine, blood biochemistry, troponin and abdominal CT examination is necessary, otherwise it is difficult to make a clear diagnosis and further correct treatment.