Which one of the following anomalies demonstrates an abnormal thickening and closure of the aortic leaflets, causing the left ventricle to "balloon" from increased pressure? It leads to heart failure and, if severe, fetal demise.

Question

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Critical aortic stenosis is characterized by the abnormal thickening and closure of the aortic leaflets, which increases pressure in the left ventricle, potentially leading to heart failure and, in severe cases, fetal demise.

Which One of the Following Anomalies Demonstrates an Abnormal Thickening