| coarctation | <cardiology, embryology> A narrowing of the passageway of a blood vessel, such as coarctation of the aorta, a congenital condition. (27 Sep 1997) |
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| coarctation of the aorta | <cardiology, embryology, paediatrics> A congenital heart defect that results in the narrowing of the lumen of the aorta. The narrowing occurs most often distal to the origin of the left subclavian artery. Coarctation occurs in approximately 7% of patients with congenital heart disease and is twice as common in males. Surgical correction is most often required. Symptoms include headaches, dizziness, fainting, nosebleeds, diminished pulses in lower extremities and muscle cramps in legs with activity. There may be no symptoms in some individuals. (27 Sep 1997) |
| abdominal aortic coarctation | <radiology> 2% of all coarctations, (most common site is thoracic: just distal to origin of L SCA), may be isolated congenital anomaly, associated with: thoracic aortic coarctation, idiopathic hypercalcaemia syndrome, rubella syndrome (ToRCHS), Takayasu arteritis, neurofibromatosis, radiation therapy, fibromuscular disease (12 Dec 1998) |
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| aortic coarctation | <radiology> most frequent cause of PVH and congestive heart failure in 2nd and 3rd weeks of life associated with, bicuspid aortic valve (50-80%), calcific aortic stenosis (due to bicuspid valve), patent ductus arteriosus or VSD (in most) see also: abdominal aortic coarctation (12 Dec 1998) |
| aortic pseudo-coarctation | <radiology> Aortic kinking, rare congenital anomaly of aortic arch, long, redundant thoracic aorta, 3-sign, associated with aortic valve abnormalities (bicuspid valve, AI, AS), can develop aneurysms, no haemodynamic obstruction, no congenital heart disease Cf: coarctation (12 Dec 1998) |