Clinical characteristics and analysis of vestibular-evoked myogenic potentials in patients with sudden sensorineural hearing loss in different ages

Table 1 Comparison of 84 sudden sensorineural hearing loss patients among different age groups, n (%)

Group	n	Gender		Side		Type of hearing loss				Vertigo
		M	F	L	R	1	2	3	4	With	Without
I (≤ 40)	24	10	14	9	15	5	3	8	8	6 (25)	18 (75)
II (41-60)	38	17	21	16	21	3	3	15	16	11 (28.95)	27 (71.05)
III (61-80)	22	11	11	10	12	0	3	15	4	9 (40.91)	13 (59.09)
Total	84	38	46	37	47	8	9	39	28	26 (30.95)	58 (69.05)
P value		P > 0.05		P > 0.05		P < 0.05				P > 0.05

Table 2 The comparison of absent and elicit rates of vestibular-evoked myogenic potentials between the sudden sensorineural hearing loss groups in the affected ears, n (%)

Group	n	o-VEMP		c-VEMP
		Absent	Elicit	Absent	Elicit
I (≤ 40)	24	5 (20.83)	19 (79.17)	2 (8.3)	22 (91.7)
II (41-60)	38	12 (31.58)	26 (68.42)	13 (34.21)	25 (65.79)
III (61-80)	22	5 (22.72)	17 (72.27)	4 (18.18)	18 (81.81)
P value		P > 0.05		P < 0.05

c-VEMPs: Cervical vestibular-evoked myogenic potentials; o-VEMPs: Ocular vestibular-evoked myogenic potentials.

Table 3 The comparison of absent and elicit rates of vestibular-evoked myogenic potentials between the sudden sensorineural hearing loss groups in the unaffected ears, n (%)

Group	n	o-VEMP		c-VEMP
		Absent	Elicit	Absent	Elicit
I (≤ 40)	24	2 (8.33)	22 (91.67)	2 (8.33)	22 (91.67)
II (41-60)	38	3 (7.90)	35 (92.10)	5 (13.16)	33 (86.84)
III (61-80)	22	4 (18.18)	18 (81.82)	2 (9.09)	20 (90.91)
P value		P < 0.05		P > 0.05

c-VEMPs: Cervical vestibular-evoked myogenic potentials; o-VEMPs: Ocular vestibular-evoked myogenic potentials.

Table 4 The comparison of waveform parameters of ocular vestibular-evoked myogenic potentials between the sudden sensorineural hearing loss groups in the affected and unaffected ears

Group	Affected ear			Unaffected ear
	N1 latency (ms)	P1 latency (ms)	N1-P1 (µV)	N1 latency (ms)	P1 latency (ms)	N1-P1 (µV)
I (≤ 40)	10.62 ± 2.05	15.23 ± 1.93	15.96 ± 5.91	9.81 ± 1.17	14.44 ± 1.56	19.23 ± 9.25
II (41-60)	11.33 ± 1.69	15.52 ± 1.62	13.22 ± 5.36a	11.10 ± 2.13c	15.40 ± 2.13	16.25 ± 10.65
III (61-80)	11.62 ± 2.63	15.64 ± 1.61	8.30 ± 2.60b	11.49 ± 2.96	16.01 ± 3.71d	8.52 ± 3.95e

^aP < 0.05 vs group III (aged 61-80).

^bP < 0.05 vs group I (aged ≤ 40 years).

^cP < 0.05 vs group I (aged ≤ 40 years).

^dP < 0.05 vs group I (aged ≤ 40 years).

^eP < 0.05 vs group I (aged ≤ 40 years).

Table 5 The comparison of waveform parameters of cervical vestibular-evoked myogenic potentials between the sudden sensorineural hearing loss groups in the affected and unaffected ears

Group	Affected ear			Unaffected ear
	P1 latency (ms)	N1 latency (ms)	N1-P1 (µV)	P1 latency (ms)	N1 latency (ms)	N1-N1 (µV)
I (≤ 40)	15.58 ± 3.21	22.13 ± 3.19	1.23 ± 0.52	15.46 ± 3.78	21.57 ± 3.7	1.19 ± 0.61
II (41-60)	14.99 ± 3.07	21.76 ± 3.40	0.93 ± 0.33	14.93 ± 2.25	21.27 ± 2.99	1.08 ± 0.45
III (61-80)	15.11 ± 2.21	21.46 ± 2.40	1.06 ± 0.41	15.30 ± 2.19	22.02 ± 1.85	0.94 ± 0.32