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Failures in myringoplasty
Abstract:
We analyzed those failures occurring in 417 myringoplasties. Forty-four drum re-perforations were found (10.6%), half of which occurred immediately after operation. Causes of these early failures included necrosis in the middle of the graft without infection (10 ears) and blunting of the anterior margins of the graft (7 ears). Infection was the most common cause of re-perforations in the later failures. Re-perforations also occurred more frequently when larger perforations were closed in contrast to repair of small ones. We found that other pre-operative factors ("dry" or "wet" ear, site of the perforation) or grafting technique ("underlay" or "overlay") did not affect the graft take-rate. Adhesive eardrums were found in 23 ears (5.5%). These were more common when ears were infected pre-operatively, when middle ear mucosa was removed during the primary operation, or when squamous epithelium was present on the tympanic mucosa. Lateralization of the grafted eardrum was found in two cases (0.5%), both of which had been operated on using the sandwich technique.
Insights
Graft failure in myringoplasty, including re-perforations and adhesive eardrums, is influenced by factors like infection and perforation size. Surgical techniques and ear condition impact outcomes.
Area of Science:
- Otolaryngology
- Surgical Outcomes Research
Background:
- Myringoplasty is a common surgical procedure to repair tympanic membrane perforations.
- Graft success rates and potential complications require thorough investigation to optimize patient outcomes.
Purpose of the Study:
- To analyze the failure rates and causes of graft failure in myringoplasty.
- To identify pre-operative and surgical factors influencing graft take and complications such as re-perforation and adhesive eardrums.
Main Methods:
- Retrospective analysis of 417 myringoplasty procedures.
- Categorization of failures into re-perforations and adhesive eardrums.
- Evaluation of pre-operative factors (ear condition, perforation site) and surgical techniques (underlay, overlay, sandwich).
Main Results:
- Overall re-perforation rate was 10.6%, with half occurring early post-operatively due to graft necrosis or anterior margin blunting.
- Infection was the primary cause of late re-perforations.
- Larger perforations had higher re-perforation rates compared to smaller ones.
- Adhesive eardrums occurred in 5.5% of cases, associated with pre-operative infection and specific surgical conditions.
- Lateralization of the graft was rare (0.5%), observed only with the sandwich technique.
Conclusions:
- Graft success in myringoplasty is significantly affected by post-operative infection and the size of the tympanic membrane perforation.
- While certain surgical techniques and pre-operative factors do not appear to influence graft take, careful management of infection and perforation size is crucial for successful myringoplasty outcomes.