Duke Method Bleeding Time

In this duke method bleeding time post we have briefly explained about principle, requirements, duke’s bleeding time test method, ivy’s bleeding time test method.

A medical test that evaluates how quickly tiny blood vessels in the skin stop bleeding is known as bleeding time test. This bleeding time test is used to determine how well blood clots in a person’s body. The time it takes for the arteries to contract and platelets in the blood to seal the hole are measured in this bleeding time test.

Principle

Bleeding time test used to detect how quickly your blood clots and stops bleeding. Making little punctures in your skin is part of the exam. Bleeding time test is a simple evaluation of your blood platelets’ ability to form clots.

Requirements

1. Sterile Lancet

2. Cotton

3. Rectified Spirit

4. Filter Paper

5. Stop Watch.

Bleeding Time Test Procedure

Duke's method

1. Using rectified spirit, sterilise the fingertip and allow drying. Using a sterile lancet, make a sufficiently deep prick so that blood flows freely without squeezing for bleeding time test.

2. When the bleeding begins, take note of the time (start the stopwatch). Mop up the blood with a filter paper and the tip of your finger.

3. This is done every 15 seconds until the bleeding stops, each time using a fresh piece of filter paper for bleeding time test. Take note of the time (stop the stop-watch). When the bleeding stops, the blood stains on the filter paper become smaller and eventually disappear.

Ivy's method

1. Ivy’s procedure is to cuff the arm with a sphygmomanometer. Raise the cuff pressure to 40 mm Hg and keep it there. Make a deep prick on the forearm just below the elbow in sterile settings. The time it takes to bleed is recorded using Duke’s bleeding time test method.

Discussion

The time between the commencement of bleeding and the end of bleeding is referred to as bleeding time test. The normal time (according to Duke’s approach) is between 2 and 4 minutes. Purpuras have a longer time, however coagulation diseases such haemophilia have a normal bleeding time.

Further Readings

Reference