USMLE STEP 3 MCQ 01 : What is the most likely diagnosis?

Question Number 1image
Question:
What is the most likely diagnosis?
a) Ventricular septal defect
b) Patent ductus arteriosus
c) Coarctation of aorta
d) Supravalvular aortic stenosis
e) Pulmonary valve stenosis
Correct Answer: C


Explanation:

Balloon dilation has gained acceptance in the treatment of coarctation of the aorta both native and recurrent.1-6 A number of patients develop recoarctation after balloon angioplasty7-10 possibly as a result of elastic recoil or long segment stenosis. Additionally in order to achieve successful reduction in the gradient, over sizing of the balloon may be necessary with potential for complications. Stents provide radial strength to avoid recoil of the vessel , and a framework for endothelial growth.10 Over the last few years stents have been used in selected patients to treat coarctation of the aorta both native and recurrent with encouraging results.




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