The coagulation profile in a 13 year old girl with Menorrhagia having von Willebrands disease is:
High-Yield Explanation
- Von Willebrand factor acts as a plasma carrier of factor VIII and circulates in blood as factor VIII-VWF complex. - Thus, VWF deficiency impairs intrinsic pathway of coagulation & prolongs aPTT - Extrinsic pathway of coagulation remains unimpaired, PT is not altered.