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. 2009 Apr 3;19(5):325–332. doi: 10.1055/s-0029-1220208

Table 2.

Classification of Waveform Type at Completion of Tumor Resection and Postoperative Hearing (Mean)

Waveform Type Number of Patients PTA (dB)
PTA, pure-tone average.
Triphasic 11 28.1
Biphasic 11 41.9
Positive 4 62.9* deaf 1 case
Flat 10 48.8* deaf 9 cases
*

Mean except deaf case.