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Published on: October 4, 2012
Silver nitrate cauterisation, does concentration matter?
1Department of Paediatric Otolaryngology, Head and Neck Surgery, The National Children's Hospital, Dublin, Ireland. mohamin@rcsi.ie
Summary
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.
- 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.
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