Abstract
We investigated the relationships among preoperative promontory stimulation test results (threshold, dynamic range and gap detection), duration of profound deafness and postoperative vowel and consonant recognition scores. Twenty-eight profoundly deaf patients were implanted with the Cochlear corporation multielectrode implant programmed in the bipolar+1 mode. 6 months or more later they were re-examined. Only the dynamic range of preoperative promontory stimulation showed a significantly positive correlation with the vowel recognition score. And both vowel and consonant recognition scores tended to decrease with longer periods of profound deafness. To select or counsel patients, we must totally consider preoperative promontory stimulation results and the duration of profound deafness.
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