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Related Experiment Videos

Bleeding time. A guide to its diagnostic and clinical utility.

E R Burns1, C Lawrence

  • 1Department of Laboratory Medicine, Albert Einstein College of Medicine, Bronx, NY.

Archives of Pathology & Laboratory Medicine
|November 1, 1989
PubMed
Summary

The bleeding time test is useful for assessing platelet function in patients with bleeding disorders but has minimal value for those without a known history of such conditions. Its use as a routine preoperative screen is not well-supported by current data.

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Area of Science:

  • Hematology
  • Clinical Pathology
  • Surgical Pre-evaluation

Background:

  • The bleeding time (BT) is a widely utilized clinical test for evaluating platelet function.
  • Current indications for the BT test are not well-established, leading to potential overuse.
  • Its role as a preoperative screening tool for predicting hemorrhage is controversial.

Purpose of the Study:

  • To review the physiological basis of the bleeding time test.
  • To survey existing literature for evidence supporting the valid indications of the BT test.
  • To provide recommendations for the rational use of the BT test in preoperative evaluations.

Main Methods:

  • Literature review and synthesis of existing studies on bleeding time.
  • Analysis of physiological principles underlying platelet function assessment.

Related Experiment Videos

  • Evaluation of data supporting BT utility in various clinical scenarios.

    • Main Results:

    • The bleeding time test is valuable for assessing platelet function in patients with diagnosed hemorrhagic disorders.
    • The test provides minimal useful clinical information for patients without a history suggestive of bleeding diathesis.
    • Evidence supporting the routine preoperative use of BT to predict surgical bleeding is contradictory.

    Conclusions:

    • The bleeding time test should be reserved for patients with known or suspected bleeding disorders.
    • Its utility in asymptomatic patients or as a general preoperative screen is limited.
    • Rational application of the BT test requires careful consideration of patient history and clinical context.