Interpret the following results: • Patient: 12-year-old boy with unexplained bruising, swollen knee joints, and prolonged bleeding from injuries
• Screening tests:
O PT = 12.2 sec (control: 11.5-13.3 sec)/INR: 1.09
O APTT = 57 sec (control: 23-32 sec)
O Bleeding time = 5 min (control: 2-10 min)
Pending results from confirmation tests, this patient could be suffering from:

Question

Quizplus · Accepted Answer

The prolonged APTT suggests an intrinsic pathway problem, which could be a factor deficiency such as hemophilia. The normal PT and bleeding time suggest that factor deficiencies in the extrinsic or primary hemostasis pathways are less likely. The confirmation tests would provide more specific information on the cause of the coagulopathy.

Interpret the Following Results: • Patient: 12-Year-Old Boy with Unexplained