Anatomie et physiologie semiologie clinique semiologie paraclinique pharmacologie resume. Aortic dissection is the most common acute emergency condition of the aorta, often resulting in the death of the patient. Outcome is determined by the type and extent of dissection and the presence of associated complications eg, cerebral sequelae, aortic branch involvement, pericardial involvement, and visceral involvement, with early diagnosis and treatment being essential for improved prognosis. Findings of a dissection flap oriented concave toward the false lumen were 91% sensitive and 72% specific for a truelumen pressure deficit.
Aortic dissection is a tear in the wall of the aorta that causes blood to flow between the layers of the wall of the aorta and force the layers apart. Aortic dissection diagnosis and treatment mayo clinic. Health information and publications in africa african. Aortic dissection is a lifethreatening condition due to a tear in the intimal layer of the aorta or bleeding within the aortic wall, resulting in the separation of the different layers of the. Dissection aortique causes symptomes traitement pronostic. Imagerie scannographique du thorax linkedin slideshare. Aortic dissection is a catastrophic complication of aortic wall disease associated with high mortality and morbidity. Contrast makes the heart, aorta and other blood vessels more visible on the ct pictures. Tomodensitometrie helicoidale et dissections aortiqueshelical. Image une anomalie aortique an aortic abnormality t. Aortic dissection is the most common form of the acute aortic syndromes and a type of arterial dissection. The underlying process of the aortic wall disruption is most commonly secondary to atherosclerotic disease especially with older age or a known connective tissue disease such as marfan syndrome mfs.
M anigand g, t aillander j, b enhamou a, b arbagel atta m, l emaigre g. Demers p, miller dc 2004 surgery of the aortic arch, descending thoracic and thoracoabdominal surgery, and aortic dissection. The heart weighed 350 gm and the coronary arteries showed. Tomodensitometrie helicoidale et dissections aortiqueshelical computed tomography in aortic dissection. At autopsy, the pericardial cavity was opened to reveal 300 ml of clotted and 330 ml of liquid blood that produced cardiac tamponade.
Article in reanimation 112 march 2002 with 7 reads how we measure reads. It occurs when blood enters the medial layer of the aortic wall through a tear or penetrating ulcer in the intima and tracks along the media, forming a second bloodfilled channel within the wall. Intravascular us and manometric findings clarify the mechanisms of branchvessel compromise after aortic dissection and provide a rational guide for percutaneous treatment. Aortic dissection is the most common acute emergency condition of the aorta and often has a fatal outcome. John libbey eurotext sang thrombose vaisseaux results of. A recent study identified rupture as the cause of death in approximately onethird of affected patients admitted to the hospital, although the rate of nonfatal rupture may be considerably higher 1, 2. The incidence of aortic dissection has been reported to be. Une dissection aortique est dite aigue quand elle est diagnostiquee avant 15 jours, apres 15 jours elle est consideree comme etant chronique. Pathologic findings aortic dissection gross and microscopic description. A ct of the chest is used to diagnose an aortic dissection, possibly with an injected contrast liquid.
132 973 522 956 947 240 561 557 362 787 10 971 944 790 859 522 1172 355 91 571 1018 946 1522 1506 1354 496 510 1098 1497 1335 575 548 182