The disease of entrapment is becoming more and more common, related to the current improvement of diagnostic techniques. However, the awareness of doctors and the public about this disease still needs to be improved. These days there is a shortage of blood and fewer surgeries. I’ll update my blog to give you a little knowledge about entrapment. Aortic coarctation refers to a hematoma formed when blood in the lumen of the aorta enters the middle layer of the aortic wall through a breach in the intima. The incidence is about 5 to 10 cases per million population per year, but the onset is mostly acute, with 65% to 75% of patients dying in the acute phase (within 2 weeks) from cardiac comorbidities such as cardiac compression and arrhythmias. The peak age is 50-70 years old, and the incidence is higher in men than in women, with a male to female ratio of 2-3:1. The acute and chronic phases are divided according to the time of onset: the acute phase is within 2 weeks of onset, and the chronic phase is more than 2 weeks. According to the site of the intimal tear and the extent of aortic coarctation aneurysm extension, it can be divided into type A: the intimal tear can be located in the ascending aorta, aortic arch or proximal descending aorta, and the extension can involve the ascending aorta, arch, or extend to the descending aorta or even abdominal aorta. type B: the intimal tear is often located in the aortic isthmus, and the extension only involves the descending aorta or extends to the abdominal aorta, but does not involve the ascending aorta. Clamping is a catastrophic disease. In my experience, the cause of death is mostly pericardial tamponade, partly due to aortic rupture in the thoracic cavity.