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Middle ear gas generation in myringoplasties
1Resurrection Hospital, Chicago, Illinois.
Summary
In simple underlay vein graft myringoplasties without Gelfoam, computed tomography revealed middle ear gas filling. This suggests the middle ear may generate gas post-surgery to support fresh vein grafts.
Area of Science:
- Otolaryngology
- Surgical Innovation
- Middle Ear Surgery
Background:
- Myringoplasty is a surgical procedure to repair a perforated eardrum.
- Vein grafts are commonly used in myringoplasty.
- Gelfoam is sometimes used to support grafts during myringoplasty.
Purpose of the Study:
- To investigate the role of Gelfoam in simple underlay vein graft myringoplasties.
- To assess middle ear conditions post-myringoplasty without Gelfoam support.
Main Methods:
- Ten simple underlay vein graft myringoplasties were performed without Gelfoam.
- Computed tomography (CT) scans were conducted 24 hours postoperatively.
- Evaluation of gas filling in the middle ear, epitympanum, and mastoid.
Main Results:
- No Gelfoam was used in the 10 myringoplasties.
- CT scans showed 75%-100% gas filling in the middle ears of three patients.
- Gas was observed in the epitympanum and mastoid as well.
Conclusions:
- The middle ear may spontaneously generate gas in the immediate postoperative period.
- This endogenous gas may serve to support fresh vein grafts in myringoplasty.
- Gelfoam may not be essential for graft support in all cases.
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