Flexible Fiber Optic Carbon-Dioxide Laser Assisted Stapedotomy in Otosclerosis

Table 1

Comparative analysis of hearing results of patients with laser stapedotomy before and after surgery.

	Preoperative			Postoperative
		Min	Max		Min	Max
AC threshold
250 Hz	58.96 ± 12.63	35	95	28.79 ± 9.60	10	45	<0.001
500 Hz	56.37 ± 12.31	35	85	26.55 ± 11.26	10	55	<0.001
1000 Hz	52.93 ± 12.78	30	85	25.68 ± 12.79	10	60	<0.001
2000 Hz	49.13 ± 14.58	20	75	28.27 ± 13.84	5	65	<0.001
4000 Hz	50.34 ± 23.67	15	95	37 ± 4120.64	5	90	<0.001
6000 Hz	54.65 ± 29.04	10	110	46.37 ± 21.95	15	95	0.225
Average ACT	53.41 ± 11.81	32	80	26.37 ± 11.04	10	60	<0.001
BC threshold
500 Hz	17.62 ± 10.08	0	40	13.72 ± 9.19	0	35	0.129
1000 Hz	15.62 ± 9.01	0	30	14.27 ± 10.84	0	40	0.612
2000 Hz	22.06 ± 13.29	5	50	19.48 ± 13.81	0	60	0.473
4000 Hz	21.20 ± 19.42	0	65	21.37 ± 21.10	0	70	1.000
Average BCT	20.13 ± 8.59	5	32	16.68 ± 12.00	0	60	0.213
SRT	60.68 ± 12.86	30	85	34.34 ± 12.49	20	75	<0.001
SDS	87.65 ± 19.66	80	96	88.89 ± 21.88	76	96	0.303
Air-bone gap
500 Hz	38.44 ± 11.73	15	60	12.96 ± 7.56	0	30	<0.001
1000 Hz	37.93 ± 9.86	25	55	12.20 ± 7.27	0	30	<0.001
2000 Hz	27.41 ± 11.22	5	45	9.13 ± 6.50	0	30	<0.001
4000 Hz	29.48 ± 13.90	5	65	15.93 ± 9.98	0	30	<0.001
Average A-B gap	34 ± 9.92	17	62	12.03 ± 6.02	0	25	<0.001