Repeated USMLE Questions Step 1- Review- 25

Q- Which one of the following is the most common etiology of abdominal aortic aneurysm in the United States?

A- Atherosclerosis

B- Cystic medial necrosis

C- Rheumatic heart disease

D- Turner syndrome

A- Atherosclerosis- Other choices are not as common as atherosclerosis though they can lead to the development of aortic aneurysms. They are not as common as atherosclerosis especially in elderly population.


Q- Amiodarone is considered one of which of the following classes of anti-arrhythmic drugs?

A- Class I

B- Class II

C- Class III

D- Class IV

C- Class III- Amiodarone is one of the potassium-channel blockers. Class I are sodium-channel blockers, Class II are beta blockers while Class IV are calcium-channel blockers.


Q- Which one of the following conditions is a long term complication of cystic fibrosis?

A- Adenocarcinoma of the lung

B- Bronchiectasis

C- Emphysema

D- Pneumothorax 

B- Bronchiectasis- Cystic fibrosis is characterized by inflammatory obstruction and dilation of the bronchi throughout the lungs which eventually leads to bronchiectasis.


Read More Step 1 Review Questions 


8 thoughts on “Repeated USMLE Questions Step 1- Review- 25”

  1. Thank you so much Dr. Sadiq for your comment.

  2. That’s vary helpful for improve knowledge thank you so much

  3. Thank you Dr. Denis. God bless you and your family.

  4. Very helpful thanks
    God bless you and me .

  5. Thank you so much Dr. Aisha. God bless you too.

  6. Really, that’s very useful and helpful for improve our medical knowledge.

    Thanks dear Dr. Ray makarios and
    Dr Ashan .

    God bless you 🙏 ❤

  7. Thank you Dr Ahsan. I hope it helps students and doctors in their medical journey. God Bless you too.

  8. Very nice and very helpful
    God bless you

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