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Endoscopic or microscopic tympanoplasty, which is better for repairing tympanic membrane defect? Study sheds light

Written By : Medha Baranwal |Medically Reviewed By : Dr. Kamal Kant Kohli Published On 2022-12-05T20:00:20+05:30  |  Updated On 5 Dec 2022 8:00 PM IST
Endoscopic or microscopic tympanoplasty, which is better for repairing tympanic membrane defect? Study sheds light
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Ireland: Findings from a systematic review and meta-analysis comprising only randomized trials provide level 1 evidence supporting that endoscopic tympanoplasty (ET) is similar to microscopic tympanoplasty (MT) concerning graft success and hearing outcomes.

The study, published in The Laryngoscope, additionally found operative time for endoscopic techniques to be shorter which reduces both patients' exposure to general anaesthetic and cuts down healthcare resource utilization. The results indicate that an endoscopic approach may be preferable while performing type-1 tympanoplasty.

In otologic practice, totally endoscopic ear surgery is being increasingly utilized. For repairing a tympanic membrane defect, the well-established microscope-assisted tympanoplasty remains the most common technique but the merits of endoscopic approaches have been well-documented.

Recent studies comparing endoscopic and microscopic tympanoplasty have shown similar success rates with regard to graft uptake and postoperative closure of the air-bone gap. Also, the ET has an improved cosmetic outcome, a shorter operative time, and reduced hospital stay. Despite the increasing evidence supporting ET, the vast majority of data are retrospective and must be explained. One weakness of systematic review and meta-analyses is that the evidence level in any systematic review and meta-analysis is limited by the lowest level of evidence within the included studies. Well-performed randomized control trials (RCTs) constitute the highest level of evidence for original studies and are considered the criterion for evidence within the medical literature.

Against the above background, Thomas J. Crotty, University Hospital Galway, Galway, Ireland, and colleagues aimed to compare the outcomes of endoscopic to microscopic tympanoplasty including only randomized trials.

For this purpose, the researchers conducted a comprehensive search of online databases. All randomized trials comparing endoscopic to microscopic tympanoplasty were included. The Risk of Bias 2 was utilized for conducting the quality assessment.

The study demonstrated the following findings:

  • The initial search identified 1711 studies, of which 9 met the inclusion criteria consisting of 540 patients (microscopic tympanoplasty 51.5%; endoscopic tympanoplasty 49.5%). The mean age was 32.5 years with a similar number of males (50.1%) and females (49.9%).
  • Both endoscopic and microscopic groups had comparable outcomes with regard to graft success rate (RD 0.00) and hearing improvement (MD 0.57 dB).
  • A significantly shorter operative time was noted in the endoscopic group (MD, −24.73 min).

"Our results, assimilating level 1 evidence, showed that endoscopic and microscopic-assisted type-1 tympanoplasty have comparable outcomes in both graft success and hearing improvement, with endoscopic approaches yielding a shorter operative time," the authors concluded.

Reference:

Crotty TJ, Cleere EF, Keogh IJ. Endoscopic Versus Microscopic Type-1 Tympanoplasty: A Meta-Analysis of Randomized Trials. Laryngoscope. 2022 Nov 9. doi: 10.1002/lary.30479. Epub ahead of print. PMID: 36349835.

microscopic tympanoplastyendoscopic tympanoplastyThe Laryngoscopeear surgery
Source : The Laryngoscope
Medha Baranwal
Medha Baranwal

    MSc. Biotechnology

    Dr. Kamal Kant Kohli
    Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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