Reference no: EM133962243

Question

A 12-month-old girl is in the clinic for a well-child check. She can crawl and walk and says five words. She was exclusively breastfed until some fruits and vegetables were also introduced at 10 months. There is no known significant past medical history, and she does not take any medications. Vital signs include a T of 98.7°F, HR of 118 bpm, RR of 20/minute, and SpO2 of 98% on room air. Physical examination is unremarkable and reveals a well-appearing child acting age appropriately. Laboratory screening obtained shows a hemoglobin of 10 g/dL, mean corpuscular volume of 71 fL, and elevated red cell distribution width. Which of the following is the most likely diagnosis? Alpha-thalassemia Folate deficiency Iron deficiency anemia Sickle cell trait Vitamin B12 deficiency.