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Aortic dissection generally presents as a hypertensive emergency, and the prime consideration of medical management is to decrease the shear stress in the aortic wall (dP/dt (force of ejection of blood from the left ventricle)) by decreasing blood pressure and the heart rate.
Arterial dissections become life-threatening when growth of the false lumen prevents perfusion of the true lumen and the related end organs. For example, in an aortic dissection, if the left subclavian artery orifice were distal to the origin of the dissection, then the left subclavian would be said to be perfused by the false lumen, while the left common carotid (and its end organ, the left ...
Commonly, ischemic heart attack and stroke are the causes that lead to death in patients with severe hypertension. It is estimated that for every 20 mm Hg systolic or 10 mm Hg diastolic increase in blood pressures above 115/75 mm Hg, the mortality rate for both ischemic heart disease, cancer and stroke doubles.
Hypertension or high blood pressure affects at least 26.4% of the world's population. [15] Hypertensive heart disease is only one of several diseases attributable to high blood pressure. Other diseases caused by high blood pressure include ischemic heart disease, cancer, stroke, peripheral arterial disease, aneurysms and kidney disease.
Acute aortic syndrome (AAS) describes a range of severe, painful, potentially life-threatening abnormalities of the aorta. [1] These include aortic dissection, intramural thrombus, and penetrating atherosclerotic aortic ulcer. [2] AAS can be caused by a lesion on the wall of the aorta that involves the tunica media, often in the descending ...
A hemorrhagic infarct is determined when hemorrhage is present around an area of infarction. Simply stated, an infarction is an area of dead tissue or necrosis. [1] When blood escapes outside of the vessel (extravasation) and re-perfuses back into the tissue surrounding the infarction, the infarction is then termed a hemorrhagic infarct (infarction). [1]
The most common risk factor for type B aortic dissection is hypertension. The first line treatment for type B aortic dissection is aimed at reducing both heart rate and blood pressure and is referred to as anti-impulse therapy. A thoracic aortic stent graft, seen on chest X-ray which was placed during a TEVAR procedure.
Any previous history of hemorrhagic stroke, ischemic stroke within 3 months. History of stroke, dementia, or central nervous system damage within 1 year; Head trauma within 3 weeks or brain surgery within 6 months; Known intracranial neoplasm; Suspected aortic dissection; Internal bleeding within 6 weeks; Active bleeding or known bleeding disorder
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