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Eustachian tube dysfunction: A diagnostic accuracy study and proposed diagnostic pathway.

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Patient-reported outcomes (PROMs) lack diagnostic value for Eustachian tube dysfunction (ETD). Clinical assessment and Eustachian tube opening tests are recommended for accurate ETD diagnosis.

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Area of Science:

  • Otolaryngology
  • Medical Diagnostics
  • Audiology

Background:

  • Eustachian tube dysfunction (ETD) diagnosis relies on non-specific symptoms, complicating treatment selection and clinical trials.
  • Current diagnostic methods for obstructive and patulous ETD lack objective functional measurements.
  • This limitation hinders effective patient management and research design for ETD.

Purpose of the Study:

  • To evaluate the correlation and diagnostic accuracy of various Eustachian tube opening tests and patient-reported outcome measures (PROMs).
  • To establish a reliable diagnostic pathway for Eustachian tube dysfunction.
  • To determine the clinical utility of PROMs versus objective functional tests in ETD diagnosis.

Main Methods:

  • Compared 14 Eustachian tube opening tests and 2 PROMs against expert panel diagnosis and latent class analysis.
  • Utilized Pearson correlation, principal component analysis, and logistic regression to assess index test performance.
  • Assessed feasibility, patient acceptability, and diagnostic accuracy of all index tests.

Main Results:

  • PROMs correlated with expert diagnosis but not with objective Eustachian tube function tests, showing poor specificity and no diagnostic value.
  • Objective tests for Eustachian tube opening were feasible and acceptable to patients.
  • Latent class analysis identified tympanometry, sonotubometry, and tubomanometry as having the best diagnostic performance for obstructive ETD.

Conclusions:

  • Diagnosis of ETD should integrate clinical assessment with objective Eustachian tube opening tests.
  • Patient-reported outcome measures (PROMs) are not recommended for diagnosing ETD due to lack of diagnostic value.
  • A diagnostic pathway incorporating specific objective tests is proposed, though challenges remain for intermittent ETD cases.