Equivalent ear canal volumes in children pre- and post- tympanostomy tube insertion

J. E. Shanks, P. G. Stelmachowicz, K. L. Beauchaine, L. Schulte

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


Pre- and postoperative equivalent ear canal volume measures were obtained from a group of 334 children ranging in age from 6 weeks to 6.7 years. The purpose of the study was to develop volumetric guidelines for the determination of tympanostomy tube patency. For children 4 years and older, almost no ambiguity existed in making this determination accurately. For younger children, the pre- and postoperative distributions overlap. A criterion value of ≥ cm3 as an indicator of a tympanic membrane perforation appears to yield the lowest possible error rate. When both pre- and postoperative measures are available, a difference of ≥ 0.4 cm3 can be used in conjunction with the absolute value to identify a patent tympanostomy tube.

Original languageEnglish (US)
Pages (from-to)936-941
Number of pages6
JournalJournal of Speech and Hearing Research
Issue number4
StatePublished - 1992


  • Acoustic admittance
  • Children
  • Equivalent volume
  • Tympanostomy tubes

ASJC Scopus subject areas

  • Otorhinolaryngology

Fingerprint Dive into the research topics of 'Equivalent ear canal volumes in children pre- and post- tympanostomy tube insertion'. Together they form a unique fingerprint.

Cite this