Question

The orientation of the blade on the arm that produces the most accurate results in a bleeding time test is:

Answer 1

For an accurate bleeding time test, the blade should be positioned at a 45-degree angle parallel to the long axis of the forearm to obtain consistent results reflecting platelet function and hemostasis.

Step-by-step explanation:

The orientation of the blade on the arm that produces the most accurate results in a bleeding time test is typically at a 45-degree angle to the direction of the underlying blood vessels, usually along the forearm. To ensure consistent results, the blade should be of standardized width and depth and placed parallel to the long axis of the arm.

This technique minimizes the variability in the test and provides a controlled wound that allows for an accurate assessment of the duration it takes for bleeding to stop, which can reflect platelet function and overall hemostasis.