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A pseudoaneurysm, also known as a false aneurysm, is a locally contained hematoma outside an artery or the heart due to damage to the vessel wall. [1] The injury passes through all three layers of the arterial wall, causing a leak, which is contained by a new, weak "wall" formed by the products of the clotting cascade. [1]
A true aneurysm is one that involves all three layers of the wall of an artery (intima, media and adventitia).True aneurysms include atherosclerotic, syphilitic, and congenital aneurysms, as well as ventricular aneurysms that follow transmural myocardial infarctions (aneurysms that involve all layers of the attenuated wall of the heart are also considered true aneurysms).
Rasmussen aneurysm is a distinctive variant of pseudoaneurysm of a branch of the pulmonary artery, predominantly found adjacent to or within a lung cavity, both often arising as a complication of pulmonary tuberculosis. [1] [2] The condition was originally described by Fritz Valdemar Rasmussen in 1868. [3]
An estimated 0.67% of patients admitted to the hospital after major motor vehicle accidents were found to have blunt carotid injury, including intimal dissections, pseudoaneurysms, thromboses, or fistulas. [20] Of these, 76% had intimal dissections, pseudoaneurysms, or a combination of the two.
Human infectious diseases may be characterized by their case fatality rate (CFR), the proportion of people diagnosed with a disease who die from it (cf. mortality rate).It should not be confused with the infection fatality rate (IFR), the estimated proportion of people infected by a disease-causing agent, including asymptomatic and undiagnosed infections, who die from the disease.
Intradural pseudoaneurysm is a broad term to describe several subtypes of aneurysms that fundamentally are different from the more typical intracranial berry-type aneurysms. References [ edit ]
Acquired causes include atherosclerosis in adults, [4] Kawasaki disease in children [5] and coronary catheterization. With the invention of drug eluting stents, there has been more cases implying stents lead to coronary aneurysms. The pathophysiology, although not completely understood, might be comparable to that of aneurysms of larger vessels.
Ventricular aneurysms are one of the many complications that may occur after a heart attack.The word aneurysm refers to a bulge or 'pocketing' of the wall or lining of a vessel commonly occurring in the blood vessels at the base of the septum, or within the aorta.