Table 1.
Subject demographics, RW, round window; ERW, extended round window; LFPTA, low frequency pure tone average (average threshold for 125, 250, and 500 Hz, in dB HL); ST, scala tympani; SV, scala vestibuli; Preop, preoperative; Postop, postoperative.
| Subject | Surgical approach | Preop LFPTA | Postop LFPTA | LFPTA shift | Scalar location |
|---|---|---|---|---|---|
| 1 | ERW | 50.0 | 61.7 | 11.7 | ST |
| 2 | ERW | 51.7 | 85.0 | 33.3 | ST-SV |
| 3 | RW | 60.0 | 105.0* | 45.0 | ST-SV |
| 4 | RW | 68.3 | 88.3 | 20.0 | ST |
| 5 | RW | 63.3 | 105.0* | 41.7 | ST-SV |
| 6 | RW | 41.7 | 76.7 | 35.0 | ST-SV |
| 7 | RW | 31.7 | 81.7 | 50.0 | – |
| 8 | ERW | 31.7 | 56.7 | 25.0 | ST |
| 9 | RW | 56.7 | 105.0* | 48.3 | ST-SV |
| 10 | RW | 66.7 | 105.0* | 38.3 | ST (* BM) |
| 11 | RW | 66.7 | 76.7 | 10.0 | ST-SV |
| 12 | RW | 26.7 | 45.0 | 18.3 | ST |
| 13 | RW | 45.0 | 70.0 | 25.0 | ST |
| 14 | ERW | 53.3 | 66.7 | 13.3 | ST |
| 15 | RW | 58.3 | 105.0* | 46.7 | – |
| 16 | RW | 75.3 | 83.3 | 8.0 | ST |
| 17 | RW | 66.7 | 75.0 | 8.3 | ST |
| 18 | RW | 60.0 | 80.0 | 20.0 | ST |
| MEAN | – | 54.1 | 81.8 | 27.7 | – |
Thresholds with asterisk represent no behavioral response at the limits of the audiometer.
*
BM indicates the electrode pushing against the basilar membrane.