Repeated USMLE Questions- A Case of Atelectasis



Q- A 5-year-old boy is brought to the emergency room for cough and trouble breathing. His parents mention that he was playing with some coins a short time ago. The coin is most likely lodged in which of the following lobar bronchi?

A- Left middle lobar bronchus

B- Left superior lobar bronchus

C- Right middle lobar bronchus

D- Right superior lobar bronchus

C- Right middle lobar bronchus- Foreign body is usually lodged in this bronchus as it the shortest, wider and most vertical than all others.



Q- Which one of the following statements correctly describes the inspiratory reserve volume?

A- Volume of air that can still be inhaled in after a normal inspiration

B- Volume of air that moves into the lung with each normal inspiration

C- Volume of air that present in the lung after maximal inspiration

D- Volume of air that remains in the lung after a normal expiration

A- Volume of air that can still be inhaled in after a normal inspiration- A is the correct answer, B is tidal volume, C is functional residual capacity while D is expiratory reserve volume.



Q- Which of the following findings is consistent with a case of right lung atelectasis?

A- Trachea is deviated to the left

B- Trachea is deviated to the right

C- Trachea is not deviated (normal location)

B- Trachea is deviated to the right- In atelectasis, trachea is deviated towards the side of the lesion while is tension pneumothorax and pleural effusion it is deviated to the other side of the lesion.



More Repeated USMLE Questions Step 1

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