Effect of caffeine on cervical vestibular-evoked myogenic potential in healthy individuals

Sousa, Ana Maria Almeida de; Suzuki, Fabio Akira

doi:10.1016/j.bjorl.2014.02.004

INTRODUCTION:

Caffeine is the most common psychoactive drug in use around the world and is found at different concentrations in a variety of common food items. Clinically, a strong association between caffeine consumption and diseases of the vestibular system has been established. Cervical vestibular-evoked myogenic potential (cVEMP) is an electrophysiological test that is used to assess the sacculocollic pathway by measuring changes in the vestialibulocollic reflex.

AIM:

The present study aimed to evaluate the effect of an acute dose of caffeine on the vestibulocollic reflex by using cVEMP.

METHOD:

A prospective experimental study was performed in which healthy volunteers were submitted to the test before and after the intake of 420 mg of caffeine. The following parameters were compared: p13 and n23 latencies and p13-n23 amplitude.

RESULT:

No statistically significant difference was found in the test results before and after caffeine use.

CONCLUSION:

The vestibulocollic reflex is not altered by caffeine intake.

Vestibular evoked myogenic potentials; Caffeine; Vertigo; Dizziness

[1] *Corresponding author. E-mail: anamasousa@yahoo.com.br (A.M.A. Sousa).

Item (milliliters – mL)	Caffeine content (milligrams - mg)
Tea (227 mL)
Weak	25
Medium	42
Strong	51
Coffee (227 mL)
Instant	45
Brewed	111
Cola drinks (330 mL)	35
Energetic drinks (240 mL)	80
Milk chocolate bar (9 g)	6
Dark chocolate bar (9 g)	20

	Mean	SD	n
p13	13.41	1.27	50
n23	23.24	2.74	50
IA	14.20%	6.97%	25

		Pre	Post	p
	Mean	13.41	13.56
p13	SD	1.27	1.39	0.248
	n	50	50

	Mean	23.24	23.14
n23	SD	2.74	2.71	0.546
	n	50	50

	Mean	71.90	76.82
Amplitude p13n23	SD	47.85	48.22	0.170
	n	50	50

Brasil

Brasil

Effect of caffeine on cervical vestibular-evoked myogenic potential in healthy individuals^☆ ☆ Please cite this article as: Sousa AMA, Suzuki FA. Effect of caffeine on cervical vestibular-evoked myogenic potential in healthy individuals. Braz J Otorhinolaryngol. 2014;80:226-30.

INTRODUCTION:

AIM:

METHOD:

RESULT:

CONCLUSION:

Brasil

Brasil

Effect of caffeine on cervical vestibular-evoked myogenic potential in healthy individuals☆ ☆ Please cite this article as: Sousa AMA, Suzuki FA. Effect of caffeine on cervical vestibular-evoked myogenic potential in healthy individuals. Braz J Otorhinolaryngol. 2014;80:226-30.

INTRODUCTION:

AIM:

METHOD:

RESULT:

CONCLUSION:

Effect of caffeine on cervical vestibular-evoked myogenic potential in healthy individuals^☆ ☆ Please cite this article as: Sousa AMA, Suzuki FA. Effect of caffeine on cervical vestibular-evoked myogenic potential in healthy individuals. Braz J Otorhinolaryngol. 2014;80:226-30.