Vestibular-evoked myogenic potential in response to bone-conducted sound in patients with otosclerosis

Figures & data

Table I. Summary of patients.

					AC		BC			BC-VEMP		Balance problems
Case no.	Age (years)	Sex	Side	Duration	Right	Left	Right	Left	Caloric CP%	Right	Left	V or D	Duration	Recurrence	Trigger
1	56	F	B	15	62.5	43.1	28.8	24.4	3.4	0.00*	0.69	D	Seconds	Recurrent	Positional
2	45	F	L	6	9.4	65.6	NM	18.1	18.9	1.62	0.00*	–
3	62	F	B	19	56.9	67.5	31.3	35.0	3.8	0.97	1.14	–
4	36	F	L	2	25.6	38.8	23.1	23.1	44.3*	1.06	0.00*	D	Seconds	Recurrent	–
5	37	F	R	8	60.0	31.9	29.4	24.4	–13.8	1.93	1.06	–
6	66	F	L	6	23.1	38.8	20.0	29.4	16.3	0.92	0.00*	–
7	49	F	B	9	65.0	49.4	44.4	34.4	8.8	0.00*	1.86	D	Seconds	Recurrent	Up-and-down
8	44	F	B	34	105.0	103.8	67.5	66.3	17.0	1.30	1.05	V	Minutes	Once	Up-and-down
9	60	M	L	2	19.4	70.6	6.3	48.1	–18.2	0.82	0.00*	D	Days	Once	–
10	70	M	B	6	45.0	44.4	26.9	23.8	21.2	0.32	0.57	–
11	61	F	R	15	96.3	48.8	52.5	42.5	–3.1	0.53	0.64	–
12	38	F	B	2	45.6	27.5	23.1	21.9	–9.8	1.41	0.77	–
13	51	M	B	18	68.1	44.4	28.1	20.6	10.1	1.05	1.50	–
14	42	F	B	5	25.0	54.4	10.0	13.8	–12.7	0.00*	0.00*	D	Minutes	Recurrent	Positional
15	79	M	L	5	35.6	65.6	31.3	46.9	4.2	0.63	0.67	–
16	52	M	B	3	42.5	22.5	18.1	16.3	35.0*	0.88	0.00*	D	Hours	Recurrent	–
17	56	M	R	2	43.1	15.6	20.6	11.3	16.7	0.87	0.64	–
18	39	F	B	5	51.9	45.6	37.5	26.3	–3.4	0.70	0.00*	V	Minutes	Twice	Up-and-down
19	60	M	R	1	46.3	30.0	40.0	26.9	0.0	0.73	0.89	–
20	29	F	B	10	35.0	49.4	16.9	22.5	25.0*	0.83	0.74	–
21	62	F	B	5	80.6	53.1	36.3	26.9	–6.7*	0.00*	0.00*	D^†	Hours	Once	–
22	52	F	L	4	22.5	46.9	16.3	29.4	0.0	0.85	0.90	–
23	55	F	L	7	13.8	42.5	12.5	31.9	–4.8	0.57	0.00*	V + D	Minutes	Recurrent	Up-and-down
24	35	M	B	5	51.9	56.9	28.8	23.8	2.3	1.88	2.03	–
25	78	M	B	15	92.5	76.3	43.1	37.5	6.7	0.60	0.68	–

AC, air-conducted thresholds; B, bilateral; BC, bone-conducted thresholds; CP, canal paresis; D, dizziness; Duration, mean duration of disease; NM, not measured; V, vertigo.

*Abnormal results.

^†Past history of benign paroxysmal positional vertigo (BPPV).

Table II. Details of disequilibrium (D) group and non-disequilibrium (ND) group.

Characteristic	D group (n = 10)	ND group (n = 15)	p value
Age (years)	48.9 ± 9.0	54.3 ± 15.5	0.319
Male:female	2:8	7:8	0.176
Duration of disease (years)	8.9 ± 9.7	7.8 ± 5.9	0.329
Unilateral:bilateral	3:7	8:7	0.231

Table III. Comparison of results of auditory and vestibular examination between disequilibrium (D) group and non-disequilibrium (ND) group.

Examination		D group	ND group	p value
Audiometry
	AC (dB)	56.3 ± 23.3	55.6 ± 17.3	0.25
	BC (dB)	32.6 ± 16.5	29.5 ± 9.5	0.482
Caloric testing
	Normal	7	14
	Abnormal	3	1	0.119
BC-VEMP
	Normal	1	13
	Abnormal	9	2	< 0.001

AC, mean air-conducted thresholds in affected ears; BC, mean bone-conducted thresholds in affected ears.

Table IV. Relationship between detailed symptoms and results of BC-VEMP.

		Results of BC-VEMP
Symptoms		Normal	Abnormal
Vertigo or dizziness
	Vertigo	1	1
	Dizziness	0	7
	Vertigo and dizziness	0	1
Repetition
	Yes	0	7
	No	1	2
Duration
	Seconds	0	3
	Minutes	1	3
	Hours	0	2
	Days	0	1
Trigger
	Positional	0	2
	Up-and-down	1	3
	None	0	4