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Drop weld thermal injuries to the middle ear
1Academic Department of Oto-Rhino-Laryngology, National University of Ireland Galway, Newcastle Road, Galway, Ireland. ivanj.keogh@hse.ie
Revue De Laryngologie - Otologie - Rhinologie
|July 6, 2010
Summary
Drop weld injuries can cause severe ear damage, including chronic perforations and hearing loss. Prompt removal of foreign bodies and surgical repair are crucial for preventing complications.
Area of Science:
- Otolaryngology
- Occupational Health
- Materials Science
Background:
- Drop weld injuries are rare but serious, affecting steel workers and welders exposed to hot sparks and molten slag.
- These injuries involve thermal trauma to the external auditory canal and tympanic membrane.
Observation:
- A case of drop weld injury to the left tympanic membrane is presented, leading to chronic middle ear inflammation, otorrhoea, and perforation.
- CT scans revealed a metallic foreign body on the promontory with localized bone erosion.
Findings:
- The most common sequelae include chronic tympanic membrane perforation, chronic otorrhoea, facial nerve injury, and deafness.
- Foreign body reactions to embedded metal slag contribute to persistent suppuration.
Implications:
- Surgical removal of foreign bodies is essential for managing these injuries.
- A cartilage-reinforced underlay tympanoplasty technique is recommended for repairing chronic tympanic membrane perforations.
- Preventive measures like earplugs and increased awareness are vital for avoiding transtympanic thermal trauma.
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