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Jun 12, 2024 · Aortic intramural hematoma (IMH) is an atypical form of aortic dissection due to a contained hemorrhage into the aortic wall usually from the vasa vasorum without an intimal tear. It forms part of the acute aortic syndrome spectrum along with penetrating atherosclerotic ulcer and classical aortic dissection. Epidemiology.
Feb 11, 2014 · Intramural hematoma (IMH) is a life-threatening aortic disease included within acute aortic syndrome, together with aortic dissection and penetrating aortic ulcer (PAU). 2, 3 IMH is a contained aortic wall hematoma with bleeding within the media but without initial intimal flap formation (Figure 2). 3 Its natural history is variable; it may be r...
Oct 26, 2018 · CT imaging findings that help predict progression of an aortic intramural hematoma (IMH) to overt dissection include type A aortic IMH, mean IMH thickness >10–11 mm, compression of the true aortic lumen, a maximal ascending aortic diameter >50 mm, descending aortic diameter >45 mm and the presence of pericardial effusion.
Sep 7, 2022 · Medical treatment with sequential imaging is recommended in patients with uncomplicated course, and endovascular repair is indicated in patients with rupture, persistent pain, end-organ ischemia, or rapid aortic enlargement. This review discusses the ideal timing for treatment of IMH.
Diagrams show the pathogenesis of aortic intramural hematoma. Hemorrhage resulting from rupture of the vasa vasorum weakens the media of the aortic wall (A) and leads to enlargement of the aortic diameter (B). In an intramural hematoma, unlike an aortic dissection penetrating ulcer, the intima remains intact. Adapted with permission
Sep 11, 2012 · Aortic intramural hematoma (IMH) is an important acute aortic syndrome that presents with symptoms similar to those of classic (typical) aortic dissection (AD).
Apr 3, 2018 · Acute intramural hematoma of the descending aorta treated with stent graft repair is associated with a better prognosis
