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Preoperative Eustachian Tube Function and Size of Mastoid Air Cell System

Karl H. Siedentop, MD; Lee R. Hamilton; Stan B. Osenar

Arch Otolaryngol. 1972;95(2):146-150.

Abstract
In a retrospective study of 63 ears, good eustachian tube function (ETF) was accompanied in 66.7% of cases by mastoid air cell systems (MACS) larger than 10 sq cm while poor ETF was accompanied by MACS smaller than 5.0 sq cm in 40.6%. In 81.1%, ears with good tubal function had an aerated middle ear and intact tympanic membrane 11 months or more following tympanoplasty. Surgical success was attained in 87.5% of ears with MACS larger than 10 sq cm. If good ETF and large-sized MACS are present together, surgical success rate is better than 85%. A high incidence of surgical success was found in ears with good ETF and small-sized MACS. In ears with other combinations of ETF and different sizes of MACS, distinct trends in surgical outcome could not be detected but the results are not as good as in the two others groups.

Author Affiliations
Chicago

From the Department of Otolaryngology, Abraham Lincoln School of Medicine, University of Illinois, Chicago.

Footnotes
Accepted for publication July 8, 1971.

Reprint requests to Department of Otolaryngology, Abraham Lincoln School of Medicine, University of Illinois Medical Center, PO Box 6998, Chicago 60680 (Dr. Siedentop).

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