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Review Question - QID 213580

In scope icon M 2 B
QID 213580 (Type "213580" in App Search)
A 3-year-old girl is brought to her pediatrician because of a nosebleed that will not stop. Her parents say that she started having a nosebleed about 1 hour prior to presentation. Since then they have not been able to stop the bleeding. Her past medical history is remarkable for asthma, and she has a cousin who has been diagnosed with hemophilia. Physical exam reveals diffuse petechiae and purpura. A panel of bleeding tests are obtained with the following results:

Bleeding time: 11 minutes
Prothrombin time: 14 seconds
Partial thromboplastin time: 32 seconds
Platelet count: 195,000/mm^3

Peripheral blood smear shows normal cell morphology. Which of the following characteristics is most likely true about this patient?