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Related Experiment Videos

Silver nitrate cauterisation, does concentration matter?

M Amin1, F Glynn, S Phelan

  • 1Department of Paediatric Otolaryngology, Head and Neck Surgery, The National Children's Hospital, Dublin, Ireland. mohamin@rcsi.ie

Clinical Otolaryngology : Official Journal of ENT-UK ; Official Journal of Netherlands Society for Oto-Rhino-Laryngology & Cervico-Facial Surgery
|June 7, 2007
PubMed
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This study compared 75% and 95% silver nitrate for epistaxis treatment. Higher concentration (95%) showed deeper tissue penetration, potentially increasing risks like septal perforation.

Area of Science:

  • Otolaryngology
  • Histopathology

Background:

  • Epistaxis is commonly treated with topical silver nitrate.
  • Two concentrations, 75% and 95%, are widely used by otolaryngologists.

Purpose of the Study:

  • To compare the histological effects of 75% and 95% silver nitrate on mucosal tissue.
  • To assess the depth of tissue penetration at a fixed contact time of 5 seconds.

Main Methods:

  • Twelve children undergoing tonsillectomy were included.
  • Silver nitrate (75% or 95%) was applied to selected blood vessels on tonsil tissue for 5 seconds.
  • Depth of tissue penetration was measured.

Main Results:

  • A significant difference in depth of tissue penetration was observed.

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  • The 95% silver nitrate concentration demonstrated an average twofold increase in penetration depth compared to 75%.

    • Conclusions:

    • Increased penetration depth with 95% silver nitrate may elevate risks of nasal cautery complications.
    • Potential complications include septal perforation, especially with repeated or bilateral nasal cautery.