MEDICINE
Question 73
The most Common Anomaly associated with co arctation of aorta is
a. Bicuspid AV
b. PDA
c. ASD
d. VSD
Answer
a. Bicuspid aortic valve
Reference
Nelson 15th Edition Chapter 386.17
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Discussion
Constrictions of the aorta of varying degrees may occur at any point from the transverse arch to the iliac bifurcation, but 98% occur just below the origin of the left subclavian artery at the origin of the ductus arteriosus (juxtaductal coarctation).
Explanation
Coarctation of the aorta may be a feature of Turner (XO) syndrome and is associated with bicuspid aortic valve in over 70% of patients. Mitral valve abnormalities, for example, a supravalvar mitral ring or parachute mitral valve, and subaortic stenosis are not uncommon associated lesions.
Comments
The anomaly occurs twice as often in males as in females.
Tips
When this group of left-sided obstructive lesions occurs together, they are referred to as Shone complex.
