Aortic dissection is a medical emergency. Earlier diagnosis and treatment are important. Over time, the tear can affect your brain, lungs, arms, legs, and heart. This depends on where along your aorta the tear occurs. Acute aortic dissection can be treated surgically or medically. In surgical treatment, the area of the aorta with the intimal tear is usually resected and replaced with a Dacron graft. Emergency surgical correction is the preferred treatment for Stanford type A (DeBak Acute aortic dissection is the most common life-threatening disorder affecting the aorta.( type I and II) ascending aortic dissection. Although acute aortic dissection classically produces sudden onset of severe chest pain that often has a tearing or ripping quality, he goals of early management of aortic dissection are to control pain and limit the extension of the dissection using anti-impulse therapy. Acute aortic dissection (AAD) is associated with unacceptably high mortality rate. Thoracic aortic dissection should be considered for every patient presenting to the emergency department with chest pain or back pain, particularly if accompanied by neurologic signs or symptoms. The Stanford classification is more commonly used. Type A dissections involve the ascending aorta, while type B dissections do not.