02-18-2008, 06:27 AM
A 4-year-old boy has a history of easy bruising, nosebleeds, and a similar history among male and female family members. Laboratory investigations show normal INR and prolonged APTT. Which one of the following is the most likely cause of this boy's tendency?
1) hemophilia A
2) Christmas disease
3) factor XIII deficiency
4) von Willebrand's disease
5) familial platelet function disorder
1) hemophilia A
2) Christmas disease
3) factor XIII deficiency
4) von Willebrand's disease
5) familial platelet function disorder