Fourteen of the high-positive air pressure tympanograms showed low compliance (greater than 5.5 Madsen units), and of these, six (43%) were associated with ears considered normal, six (43%) with ears showing signs of acute infection, and two (14%) with ears in which the presence of effusion seemed probable. Of the 65 high-positive air pressure tympanograms, 51 showed relatively high compliance (less than or equal to 5.5 Madsen units), and of these 46 (90%) were associated with ears considered normal otoscopically. Correlations between otoscopic diagnoses and tympanometric findings in the case of 65 of the high-positive air pressure tympanograms form the basis of the present report. Such tympanograms accounted for 1.2% of a series of 8,011 tympanograms recorded at various times from 1,556 subjects ranging in age from 7 months through 12 years. Tympanograms with peaks located in the high-positive air pressure range (greater than or equal to 50 mm H2O) are infrequently recorded in clinical practice and have been little discussed in the literature.
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