Pediatrics The coagulation profile in a 13 year old girl with menorrhagia having von Willebrand&;s disease is A Isolated prolonged PTT with a normal PT B Isolated prolonged PT with a normal PTT C Prolongation of both PT and PTT D Prolongation of thrombin time 💡 Explanation The coagulation profile in a 13 year old girl with menorrhagia having von Willebrand&;s disease is ✓ Correct Answer: A. Isolated prolonged PTT with a normal PT