Repeated USMLE Questions Step 1- 383

Q- In a case of Barrett esophagus, the normal tissue of the distal part of the esophagus is transferred into which of the following type of tissues?

A- Ciliated columnar epithelium

B- Keratinized squamous epithelium

C- Non-ciliated columnar epithelium

D- Non-keratinized squamous epithelium

C- Non-ciliated columnar epithelium- the normal lining of the esophagus is non-keratinizing squamous epithelium which transferred into non-ciliated columnar epithelium

Q- Which one of the following conditions is the most common cause of aortic stenosis in the the elderly patients?

A- Bicuspid aorta

B- Calcification of the aortic valve

C- Rheumatic fever

D- Subacute bacterial endocarditis

B- Calcification of the aortic valve- Degenerative changes of the cardiac valves in old age are caused by calcification of the valves.

Q- Which of the following is the most likely cause of sudden death in a case of portal hypertension?

A- Congestive heart failure

B- Rupture of esophageal varices

C- Hepatic encephalopathy

D- Ventricular fibrillation

B- Rupture of esophageal varices- this is the most dreaded complication of portal hypertension

More Repeated USMLE Questions Step 1

Check this Review Book for Step 1

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