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Hearing was tested in 18 patients with Pierre Robin syndrome (PRS). These results were compared with those obtained for 243 patients with either cleft lip or cleft palate, or both. None of the PRS group patients had middle ear or inner ear malformations, or sensorineural hearing loss in speech frequencies. Hearing loss in PRS is usually conductive, bilateral, and more frequent in PRS patients (30 ears or 83.33%) than in patients who do not have PRS (290 ears or 59.67%). A significantly higher (p < .01) mean of hearing loss for air conduction in speech frequencies (MHLSF = 24.5 dB) was found in PRS patients than in patients without PRS (MHLSF = 17.8 dB). The ears of the PRS patients with hearing loss were examined, revealing middle ear effusion. In all cases, hearing was restored to a normal level through suction and the use of ventilation tubes.

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