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Preductal coarctation results when an intracardiac anomaly during fetal life decreases blood flow through the left side of the heart, leading to hypoplastic development of the aorta. This is the type seen in approximately 5% of infants with Turner syndrome. [4] [5] Ductal coarctation: The narrowing occurs at the insertion of the ductus arteriosus.
Coarctation’s a fancy way of saying “narrowing”, so a coarctation of the aorta means a narrowing of the aorta. If we look at the heart, we’ve got the right and left atria, the right and left ventricles, the pulmonary artery leaving the right ventricle to the lungs, and the aorta leaving the left ventricle and going to to the body.
Causes include post-term pregnancy, placental insufficiency, and NSAID use by the mother. [citation needed] Decreased size of pulmonary vascular bed: This has a poor prognosis, as it is a fixed abnormality. It is caused by space occupying lesions such as pleural effusions and diaphragmatic hernias. [citation needed]
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The term coarctation is another synonym, [5] but is commonly used only in the context of aortic coarctation. [ 6 ] [ 7 ] Restenosis is the recurrence of stenosis after a procedure.
3. Medications. Some medications have been associated with temporary hair loss. Most of the time hair loss related to medication is due to the drug disrupting the hair growth cycle leading to a ...