Repeated USMLE Questions Step 1- 363

Q- A young man complains of daytime sleeping, cataplexy and sleep paralysis. Which of the following is the best treatment?

A- Diazepam

B- Hydroxyzine

C- Modafinil

D- Zolpidem

C- Modafinil- This is a case of narcolepsy. Amphetamine derivative such as modafinil is the best treatment of this case.

Q- Which of the following is the most likely developmental defect associated with tetralogy of Fallot?

A- Anterosuperior displacement of the infundibular septum

B- Bicuspid pulmonary artery

C- Patent ductus arteriosus

D- Transportation of the great vessels

A- Anterosuperior displacement of the infundibular septum

Q- An old patient presents with multiple tumors on the liver. Which of the following is the most common site of the primary tumor?

A- Breast

B- Colon

C- Kidney

D- Lung

B- Colon- Because liver shared blood vessels with GI tract, colon is the most likely site of the primary tumor followed by the lung.