USMLE-Rx Step 1 Qmax Challenge #1571

Check out today’s Step 1 Qmax Question Challenge.

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A 13-year-old African American female presents to the emergency department with severe pain in her right hip and back. She has experienced many similar episodes in the past and has a documented history of anemia.

Referring to the graph, if N (the solid curve) is the normal oxygen dissociation curve for hemoglobin, which curve represents the oxygen dissociation curve of the predominant form of hemoglobin in the patient’s blood during this episode?

A. A
B. B
C. C
D. D

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