Saturday, August 11, 2018

Repeated USMLE Questions Step 2 CK- 261

A 9-month-old baby is brought in to the doctor as he has been having a persistent cough, poor weight gain, and has already had several bouts of pneumonitis. On taking the history from the mother, it is known that the baby has been having foul-smelling and very large stools for several months.

Which of the following diagnostic techniques will provide you with the correct diagnosis of this patient?

A- TB skin test

B- CT of the chest

C- Serum immunoglobulins

D- Sweat chloride test


Keeping the symptoms of the baby in mind, doctors will first suspect cystic fibrosis, which generally presents during infancy with poor growth and recurrent respiratory and/or intestinal diseases. The sweat chloride test is one of the most common diagnostic tests used to evaluate a patient if you suspect cystic fibrosis. Cystic fibrosis impacts the manner in which chloride moves in and out of cells. As sweat contains chloride in the form of sodium chloride, sweat chloride test is used as the standard method for diagnosing cystic fibrosis.

The correct answer is D

No comments:

Post a Comment