Evaluation of postural control in unilateral vestibular
               hypofunction

Quitschal, Rafaela Maia; Fukunaga, Jackeline Yumi; Ganança, Maurício Malavasi; Caovilla, Heloísa Helena

doi:10.1016/j.bjorl.2014.05.015

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Brazilian Journal of Otorhinolaryngology

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Original Articles • Braz. j. otorhinolaryngol. 80 (4) • Jul-Aug 2014 • https://doi.org/10.1016/j.bjorl.2014.05.015 copy

Evaluation of postural control in unilateral vestibular hypofunction ^☆ ☆ Please cite this article as: Quitschal RM, Fukunaga JY, Ganança MM, Caovilla HH. Evaluation of postural control in unilateral vestibular hypofunction. Braz J Otorhinolaryngol. 2014;80:339-45. ^☆☆ ☆☆ Institution: Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP-EPM), São Paulo, SP, Brazil.

Authorship SCIMAGO INSTITUTIONS RANKINGS

INTRODUCTION:

Patients with vestibular hypofunction, a typical finding in peripheral vestibular disorders, show body balance alterations.

OBJECTIVE:

To evaluate the postural control of patients with vertigo and unilateral vestibular hypofunction.

METHOD:

This is a clinical cross-sectional study. Twenty-five patients with vertigo and unilateral vestibular hypofunction and a homogeneous control group consisting of 32 healthy individuals were submitted to a neurotological evaluation including the Tetrax Interactive Balance System posturography in eight different sensory conditions.

RESULTS:

For different positions, vertiginous patients with unilateral vestibular hypofunction showed significantly higher values of general stability index, weight distribution index, right/left and tool/heel synchronizations, Fourier transformation index and fall index than controls.

CONCLUSION:

Increased values in the indices of weight distribution, right/left and tool/heel synchronizations, Fourier transformation and fall risk characterize the impairment of postural control in patients with vertigo and unilateral vestibular hypofunction.

Postural balance; Vestibular function tests; Physiological nystagmus; Vestibular diseases

Condition	Stability index			Weight distribution index
	Hypofunction	Control	p-Value	Hypofunction	Control	p-Value
NO	16.7 ± 7.1	13.1 ± 3.5	0.082^a	5.2 ± 2.3	4.8 ± 2.5	0.479^a
NC	28.0 ± 13.7	18.0 ± 6.0	0.007^and	5.4 ± 2.0	4.7 ± 2.3	0.177^a
PO	25.2 ± 14.6	18.4 ± 6.6	0.267^a	6.0 ± 2.6	4.8 ± 2.5	0.640^a
PC	39.6 ± 21.4	26.0 ± 10.4	0.031^a	6.0 ± 3.2	4.0 ± 2.2	0.008^and
HR	25.6 ± 14.8	17.7 ± 5.2	0.074^a	6.5 ± 3.1	5.3 ± 2.7	0.152^a
HL	26.7 ± 14.9	17.5 ± 6.4	0.009^and	6.6 ± 3.4	5.4 ± 2.5	0.162^a
HB	30.1 ± 17.6	19.2 ± 6.3	0.016^and	6.3 ± 2.5	4.9 ± 2.9	0.640^b
HF	27.8 ± 14.3	17.7 ± 4.5	0.010^and	5.8 ± 2.3	5.4 ± 2.4	0.464^b

Condition	F1			F2–F4
	Hypofunction	Control	p-Value	Hypofunction	Control	p-Value
NO	16.1 ± 10.5	11.3 ± 5.6	0.085^a	7.8 ± 3.6	6.2 ± 1.7	0.044^and
NC	16.4 ± 12.6	13.7 ± 7.0	0.064^b	12.3 ± 6.7	8.5 ± 2.5	0.013^and
PO	21.6 ± 19.7	17.1 ± 7.6	0.510^b	10.5 ± 6.4	7.1 ± 2.2	0.013^and
PC	27.3 ± 20.4	21.3 ± 14.5	0.108^b	17.3 ± 9.7	11.2 ± 3.8	0.006^and
HR	17.9 ± 15.0	13.3 ± 7.1	0.072^b	11.5 ± 6.5	7.8 ± 2.6	0.008^and
HL	17.5 ± 9.2	14.1 ± 9.5	0.088^b	11.9 ± 7.4	7.4 ± 1.9	0.007^and
HB	24.2 ± 19.0	17.1 ± 9.3	0.123^a	15.3 ± 9.6	8.3 ± 2.6	0.002^and
HF	17.1 ± 7.8	13.2 ± 6.8	0.020^and	12.8 ± 7.2	7.7 ± 2.0	0.002^and
Condition	F5–F6			F7–F8
	Hypofunction	Control	p-Value	Hypofunction	Control	p-Value
NO	3.3 ± 1.5	2.6 ± 0.8	0.043^and	0.4 ± 0.2	0.4 ± 0.1	0.266^b
NC	5.4 ± 3.4	3.2 ± 1.0	0.005^and	0.7 ± 0.4	0.5 ± 0.3	0.046^and
PO	4.7 ± 2.8	3.6 ± 1.4	0.005^and	0.7 ± 0.4	0.6 ± 0.1	0.046^and
PC	7.1 ± 4.2	4.9 ± 1.6	0.020^and	1.3 ± 0.9	0.9 ± 0.3	0.046^and
HR	4.9 ± 2.8	3.3 ± 1.0	0.012^and	0.7 ± 0.5	0.5 ± 0.2	0.047^and
HL	5.0 ± 2.8	3.2 ± 1.2	0.005^and	0.8 ± 0.4	0.5 ± 0.2	0.030^and
HB	5.4 ± 1.2	3.5 ± 3.4	0.013^b	1.0 ± 0.6	0.6 ± 0.2	0.012^and
HF	5.2 ± 3.0	3.4 ± 1.0	0.013^and	0.8 ± 0.2	0.5 ± 0.4	0.017^and

Condition	AB		CD		AC
	Hypofunction	Control	Hypofunction	Control	Hypofunction	Control
NO	-835.6 ± 177.7	-781.0 ± 159.6	-800.4 ± 278.4	-772.6 ± 199.6	670.9 ± 281.6^a	509.3 ± 296.4
NC	-806.5 ± 192.8	-821.0 ± 236.9	-814.6 ± 172.9	-855.5 ± 144.8	650.1 ± 249.1	633.7 ± 305.5
PO	-763.4 ± 143.8	-656.6 ± 256.1	-706.3 ± 252.1	-716.4 ± 276.9	657.7 ± 226.3	625.9 ± 322.6
PC	-806.2 ± 182.0	-809.2 ± 141.9	-815.5 ± 147.1	-827.8 ± 133.7	766.0 ± 194.3	747.1 ± 192.0
HR	-863.1 ± 107.8	-780.2 ± 262.0	-843.8 ± 104.5	-816.6 ± 185.3	720.3 ± 155.0	571.9 ± 323.7
HL	-820.5 ± 198.3	-836.5 ± 173.4	-812.8 ± 201.7	-863.7 ± 106.8	594.3 ± 305.0	681.4 ± 218.3
HB	-897.8 ± 83.3	-817.7 ± 195.3	-859.9 ± 163.9	-861.1 ± 191.6	759.5 ± 197.7	655.5 ± 307.9
HF	-859.0 ± 131.1	-850.7 ± 156.4	-831.1 ± 155.5	-841.0 ± 188.8	690.8 ± 200.2	618.5 ± 274.4
Condition	BD		AD		BC
	Hypofunction	Control	Hypofunction	Control	Hypofunction	Control
NO	798.8 ± 263.0^a	738.9 ± 163.7	-882.2 ± 206.9^a	-833.2 ± 143.2	-895.8 ± 146.8^a	-805.3 ± 195.5
NC	808.4 ± 141.8	846.6 ± 107.8	-899.7 ± 70.3	-864.9 ± 163.3	-913.3 ± 52.9	-884.3 ± 110.5
PO	664.4 ± 223.6	596.9 ± 286.3	-907.8 ± 83.1	-905.8 ± 96.3	-898.7 ± 100.7	-905.3 ± 103.4
PC	757.4 ± 184.4	785.0 ± 139.7	-937.5 ± 45.5	-939.9 ± 47.8	-943.6 ± 41.8	-933.1 ± 66.7
HR	790.6 ± 178.8	785.8 ± 217.9	-889.0 ± 76.1	-838.6 ± 156.1	-888.3 ± 105.2	-872.3 ± 120.9
HL	821.5 ± 142.2	803.9 ± 167.1	-871.8 ± 75.3	-874.2 ± 125.3	-872.9 ± 99.9	-875.7 ± 125.3
HB	884.6 ± 109.4^a	823.3 ± 182.9	-936.7 ± 49.1^a	-862.4 ± 136.2	-919.2 ± 81.2	-887.4 ± 105.4
HF	839.5 ± 92.9	822.9 ± 181.6	-905.9 ± 58.6	-864.0 ± 116.0	-904.6 ± 61.9	-851.8 ± 159.5

Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Sede da Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico Facial, Av. Indianópolia, 1287, 04063-002 São Paulo/SP Brasil, Tel.: (0xx11) 5053-7500, Fax: (0xx11) 5053-7512 - São Paulo - SP - Brazil
E-mail: revista@aborlccf.org.br

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[1] * Corresponding author.E-mail: rmquitschal@yahoo.com.br (R.M. Quitschal).