![]() Secondary to dilated intercostal collateral vessels which form as a way to bypass the coarctation and supply the descending aorta It is due to thickening of the aortic media and typically occurs just distal to the ligamentum arteriosum (a remnant of the ductus arteriosus)įigure of 3 sign: contour abnormality of the aorta ![]() Therefore, the blood supply to the descending aorta is via the patent ductus arteriosusĪdult (juxtaductal, postductal or middle aortic) formĬharacterized by a short segment abrupt stenosis of the post-ductal aorta Typically with a more discrete area of constriction just proximal to the ductus but distal to the origin of the left subclavian artery It can be primarily divided into two types:Ĭharacterized by diffuse hypoplasia or narrowing of the aorta from just distal to the brachiocephalic artery proximal to the level of ductus arteriosus Variably present in the lateral leads (I, aVL, V5-6)Īsymmetric T-wave inversion originating from a depressed ST segment Voltage criteria present for left ventricular hypertrophy On clinical examination, diminished femoral pulses and differential blood pressure between upper and lower extremities may be noted. Patients may be asymptomatic in a setting of non-severe stenosis.Ĭhildren and adults can present with angina pectoris and leg claudication. Varies accordingly to the degree of stenosis and the associated abnormalities. Turner syndrome: a coarctation can be seen in 15-20% of those with Turner syndrome Transposition of the great arteries, especially with a subpulmonic VSD and overriding pulmonary artery (Taussig-Bing) ![]() AssociationsĪs with many congenital abnormalities, coarctation of the aorta is associated with other congenital anomalies.īicuspid aortic valve: most common associated defect and seen in 75-80% They are more frequent in males, M:F ratio of ~2-3:1. Coarctations account for between 5-8% of all congenital heart defects. ![]()
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