Background and Objective: Caloric method is the most important test in
evaluating the vestibular function and air caloric stimulation is the most
popular method for performing this test. As there are no standard normal
criteria for this test, the goal of this study
was to define normal criteria for different parameters of caloric test which is
a part of peripheral vestibular system test battery in Tehran University
of Medical Sciences, Iran. These parameters
include directional preponderance, unilateral weakness and slow phase velocity. Materials and
Methods:
In this cross-sectional (descriptive-analytical) study, thirty two healthy
volunteers of 20-45 years of age were included. After obtaining written
informed consent and performing basic audiologic examination, Caloric test was
performed using INC model of House Infrared/Video ENG System, USA. Its
parameters were compared between males and females and within 2 different age
groups of 20-30 and 30-45. Data were analyzed with a significant level of 0.05. Results: In the right eye,
slow phase velocity was 15.23±7.43°/s, directional preponderance was
10.49±9.28% and unilateral weakness was12.27±6.45% and these values in the left
eye were 15.94±8.25°/s, 10.45±9.09% and 12.69±7.54%, respectively. There was
not any significant difference between the two genders and between the two age
groups. Conclusion: These results
suggest the
normal values for different parameters of Caloric test and it can be used to
differentiate patients and normal subjects. As there was no statistically
significant difference between males and females and two age ranges, the same
values can be used for all of them.
Momtaz, S., Hajiabolhassan, F., Hajiabolhassan, F., Hajiabolhassan, F., Farahani, S., & Jalaie, S. (2013). Detemination of functional range of peripheral vestibular system using air caloric stimulation. Daneshvar Medicine, 21(2), 49-56.
MLA
Sara Momtaz; Fahimeh Hajiabolhassan; Fahimeh Hajiabolhassan; Fahimeh Hajiabolhassan; Saied Farahani; Shohre Jalaie. "Detemination of functional range of peripheral vestibular system using air caloric stimulation". Daneshvar Medicine, 21, 2, 2013, 49-56.
HARVARD
Momtaz, S., Hajiabolhassan, F., Hajiabolhassan, F., Hajiabolhassan, F., Farahani, S., Jalaie, S. (2013). 'Detemination of functional range of peripheral vestibular system using air caloric stimulation', Daneshvar Medicine, 21(2), pp. 49-56.
VANCOUVER
Momtaz, S., Hajiabolhassan, F., Hajiabolhassan, F., Hajiabolhassan, F., Farahani, S., Jalaie, S. Detemination of functional range of peripheral vestibular system using air caloric stimulation. Daneshvar Medicine, 2013; 21(2): 49-56.
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