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A rabbit ear model for cold stress testing

T L Smith1, S Gordon, M B Holden

  • 1Department of Orthopaedic Surgery, Bowman Gray School of Medicine of Wake Forest University, Winston-Salem, NC.

Microsurgery
|January 1, 1994
PubMed
Summary
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A rabbit ear model effectively mimics human digit vascular responses to cold stress, showing reduced blood flow that recovers with warming. This validates the model for studying cold intolerance and thermoreulatory abnormalities.

Area of Science:

  • Physiology
  • Vascular Biology
  • Thermoregulation

Background:

  • Human digits exhibit specific vascular responses to cold stress.
  • Understanding these responses is crucial for managing cold intolerance.

Purpose of the Study:

  • To investigate the vascular response of a rabbit ear model to cold stress.
  • To assess the similarity of the rabbit ear's response to that of human digits.
  • To validate the rabbit ear model for studying digital pathophysiology.

Main Methods:

  • A rabbit ear model was subjected to moderate cold stress (5-8°C for 10 minutes).
  • Auricular blood flow and cutaneous perfusion were measured.
  • The effects of subsequent warming were observed.

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Main Results:

  • Moderate cooling significantly reduced auricular blood flow and cutaneous perfusion.
  • These reductions were fully reversed after 30 minutes of warming.
  • The observed vascular response pattern in the rabbit ear mirrored that of normal human digits.

Conclusions:

  • The rabbit ear model demonstrates a vascular response to cold stress comparable to human digits.
  • Similarities in vascular receptors may underlie the conserved circulatory control.
  • This validated model offers a valuable tool for research into digital pathophysiology and cold intolerance treatment.