Pediatric Von Willebrand Disease Workup | 合法醫療器材資訊網

2021年6月23日—Screeningtests·Completebloodcount(CBC)·Templatebleedingtime·Prothrombintime(PT)·Activatedpartialthromboplastintime(aPTT).

Screening tests for von Willebrand disease (VWD) include the following:

Complete blood count (CBC)

Assess platelet number and morphology, which should be normal in most patients with von Willebrand disease, except those with type 2B von Willebrand disease who may have thrombocytopenia.

Template bleeding time

Because it is reasonably well standardized, the template bleeding time is used as a screening test for primary hemostasis. The reference range for the bleeding time in children is longer than that of adults. Results of the bleeding time are affected by many technical factors, such as the direction of the incision and the skill of the technician. Although a bleeding time outside of the reference range may suggest a defect in hemostasis, it is not diagnostic. Similarly, a bleeding time within the reference range does not excl...