Pediatrics A 13-year old girl with Menorrhagia having Von Willebrands disease will show : A Isolated prolonged PT with a normal PTT B Prolongation of both PT and PTT C Prolongation of thrombin time D Isolated prolonged PTT with a normal PT 💡 Explanation A 13-year old girl with Menorrhagia having Von Willebrands disease will show : ✓ Correct Answer: D. Isolated prolonged PTT with a normal PT