ISSN 2398-2950      

Buccal mucosal bleeding time

ffelis
Contributor(s):

Clare Knottenbelt

Synonym(s): BMBT


Overview

  • Small vessel injury (eg incision in buccal mucosa) plugged by platelets and with minimal need for functional clotting cascade provides assessment of primary hemostasis, ie platelet and vessel function.
  • Patients with coagulation defects such as hemophilia A or B have a normal BMBT since the bleeding stops in the expected time owing to the formation of platelet plugs. Note, since the platelet plug is not stabilized by fibrin strands, the incision is prone to re-bleed if traumatized later.

Sampling

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Tests

Availability

  • Readily performed in practice.

Validity

Sensitivity

  • Poor.

Specificity

  • Reasonably good: prolonged BMBT is strongly suggestive of clinically significant bleeding disorder.

Technique (intrinsic) limitations

  • May not detect subtle defects of primary hemostasis.

Result Data

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Further Reading

Publications

Refereed papers

  • Recent references from VetMedResource and PubMed.
  • Cowles B E et al (1992) Prolonged bleeding time of Chediak-Higashi cats corrected by platelet transfusion. Thromb Haemost 67 (6), 708-712.
  • Parry B W (1989) Laboratory evaluation of hemorrhagic coagulopathies in small animal practice. Vet Clin North Am Small Anim Pract 19 (4), 729-742.

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