coarctation

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coarctation

[‚kō·ärk′tā·shən]
(medicine)
A compression of the wall of a vessel, narrowing the lumen and reducing the volume (or flow).
A stricture or occlusion resulting from an outside force deforming a vessel.
References in periodicals archive ?
Non-invasive monitoring in pregnant patient with coarctation of aorta undergoing caesarean section.
In case of critical coarctation of aorta, the preductal saturation is higher than the post-ductal saturation and differential cyanosis exist.
His 2D transthoracic echo showed marked left ventricular hypertrophy with good systolic function along with severe juxta-ductal coarctation of aorta very close to origin of left Subclavian artery with peak instantaneous gradient of 120 mmHg.
Inclusion criteria: Patients with isolated PDA weighing <10Kg: Age <1 year Exclusion criteria: Patients more than 1 year age Patients with PDA with coarctation of aorta or other complex lesion; Patients weighing more than 10 Kg.
INTRODUCTION: Among the common congenital heart diseases the share of coarctation of aorta is 5 to 10 % with male to female ratio 2:1.
Coarctation of aorta is usually located in the thoracic aorta just distal to or sometime even proximal to ligament arteriosum.
Prominence of aortic knob is also seen in certain cases of aortic stenosis (post-stenotic dilatation), coarctation of aorta and aortic aneurysm.
Most individuals with coarctation of aorta have usually nonspecific symptoms, related either to upper extremity hypertension (headaches) or to reduced blood supply to the lower extremities (exercise-induced claudication) (2).
(2) In almost 40% patients, PLSVC is accompanied by a variety of cardiac anomalies such as atrial septal defect, bicuspid aortic valve, cor triatrium and coarctation of aorta. In 80% of cases, there is RSVC and in 35% of cases, the innominate vein is present.