Table II.
Pre-operative audiometric data of subjects with mixed hearing loss, as bone-conduction and air-conduction threshold levels. PTA: pure tone audiometry.
| Patient | Bone conduction thresholds | Air conduction thresholds | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 250 | 500 | 1000 | 2000 | 4000 | 250 | 500 | 1000 | 2000 | 4000 | |
| A.M. | 5 | 15 | 15 | 50 | 35 | 70 | 60 | 50 | 60 | 55 |
| G.B. | 35 | 50 | 55 | 60 | 60 | 105 | 95 | 85 | 90 | 115 |
| R.B. | 10 | 20 | 35 | 30 | 25 | 55 | 60 | 55 | 65 | 60 |
| M.C. | 5 | 25 | 35 | 45 | 40 | 65 | 60 | 65 | 65 | 75 |
| B.C. | 5 | 15 | 20 | 35 | 30 | 45 | 45 | 50 | 60 | 35 |
| V.E. | 40 | 45 | 45 | 65 | 75 | 105 | 100 | 110 | 105 | 110 |
| A.F. | 5 | 20 | 35 | 45 | 40 | 45 | 55 | 65 | 65 | 80 |
| C.M. | 20 | 35 | 40 | 60 | 70 | 85 | 90 | 70 | 90 | 100 |
| A.T. | 20 | 25 | 20 | 25 | 35 | 65 | 70 | 60 | 50 | 110 |
| A.R.2 | 15 | 35 | 40 | 55 | 45 | 80 | 70 | 75 | 65 | 75 |
| A.R.1 | 10 | 25 | 40 | 55 | 50 | 60 | 85 | 90 | 100 | 100 |
| V.S. | 15 | 40 | 55 | 65 | 75 | 55 | 60 | 80 | 65 | 95 |
| L.T. | 50 | 40 | 35 | 55 | 50 | 50 | 60 | 55 | 70 | 90 |