Hypertrophy of the intercostal arteries causing inferior rib notching is the result of collateral circulation developing as a result of __________.

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Collateral circulation develops in patients with coarctation of the aorta due to the narrowing of the aorta, which obstructs blood flow. This narrowing may result in hypertension in the upper body, leading to the development of collateral circulation to bypass the obstruction. This collateral circulation causes hypertrophy of the intercostal arteries, and the notching of the inferior ribs is a radiological sign of this hypertrophy. Acquired valvular disease, congenital heart disease, and congestive heart failure are not directly related to the development of intercostal artery hypertrophy or inferior rib notching.

Hypertrophy of the Intercostal Arteries Causing Inferior Rib Notching Is