Type B arterial coarctation generally refers to type B aortic coarctation, which is a more serious condition. type B aortic coarctation has the possibility of rupture of the coarctation aneurysm leading to sudden death by hemorrhage, and ischemic necrosis of some organs and tissues in the abdomen and lower limbs due to the coarctation aneurysm compression or tearing of the opening of the branch of the abdominal aorta. 1. Aortic coarctation type B refers to aortic intima-media rupture confined below the thoracic aorta, intima-media rupture resulting in aortic coarctation aneurysm rupture leading to sudden death by hemorrhage, generally need to be minimally invasive interventional aortic endoluminal repair surgery after controlling blood pressure. 2. Aortic coarctation type B forms a coarctation aneurysm that can compress or tear the opening of the celiac artery, superior mesenteric artery, renal artery, common iliac artery and other arteries in the abdominal aorta, resulting in ischemic necrosis of some organs and tissues in the abdomen and lower limbs. If you are suspected of having type B aortic coarctation, it is recommended to go to the hospital in time.