Question

A nurse is reviewing the laboratory results of a toddler who has hemophilia A. Which of the aPTT values should the nurse expect?

A. Prolonged aPTT
B. Normal aPTT
C. Decreased aPTT
D. Elevated aPTT

Answer 1

A nurse would expect a prolonged aPTT (activated partial thromboplastin time) value in a toddler with hemophilia A. Hemophilia A is a genetic disorder characterized by a deficiency of factor VIII, a clotting factor involved in the intrinsic pathway of the coagulation cascade.

Step-by-step explanation:

A nurse would expect a prolonged aPTT (activated partial thromboplastin time) value in a toddler with hemophilia A. Hemophilia A is a genetic disorder characterized by a deficiency of factor VIII, a clotting factor involved in the intrinsic pathway of the coagulation cascade. The aPTT test measures the function of the intrinsic pathway, so a prolonged aPTT indicates impaired clotting ability, which is expected in hemophilia A.