Bleeding Time

Definition

It is a test to assess Platelet Function and Coagulation Factor Status of the blood.

Methods

There are 2 methods to check bleeding time :

  1. IVY Method : Take a 1mm deep incision 10mm long on the ventral side of the forearm – Tie blood pressure cuff on the upper arm and raise the pressure to 40mmHg – Calculate time from the start of bleeding till it stops – Use the filter paper to wipe off the blood every 30 seconds (Normal Range – 3 to 10 minutes)
  2. Duke’s Method : Prick the patient on fingertip or earlobe after swabbing with spirit – take a 3 to 4mm deep prick – Wipe off the blood every 15 seconds with a filter paper – Stop when bleeding stops (Normal Range – 2 to 5 minutes)

 

Conditions with prolonged bleeding time

  1. Von Willebrand Disease
  2. Thrombocytopenia
  3. Disseminated Intravascular Coagulation
  4. Bernard Souliers Disease
  5. Drugs : Aspirin, Warfarin, Heparin
  6. Hypofibrinogenemia

– Jainam Shah

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