Cervical vestibular evoked myogenic potentials and video head impulse test in Ménière disease

Evaluation of the vestibular system with video head impulse test in pregnant women with hyperemesis gravidarum

“…Type 1 error probability ( α ) was accepted as 0.05 (95% confidence level), type 2 error probability ( β ) 0.10 (at 90% power level). The effect size ( d ) was calculated as 0.447 using average (0.89, 0.93 and 1.01) and SD (0.17, 0.12 and 0.12) 15 . According to the calculation, it was calculated that the required minimum sample size could be 21 patients for each group, a total of 42 patients.…”

Subjective Visual Vertical and Vestibular Evoked Myogenic Potential in Meniere's disease

“…41 Alterations in cVEMP parameters, which vary from study to study, have also been reported in MD cases. Absent cVEMP was mentioned in SE and AE, 24 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 44 , 45 , 46 prolonged P1 and/or N1 latencies, 24 , 31 , 32 , 34 , 36 , 44 , 46 decreased inter-amplitude, 24 , 44 and altered asymmetry index. 33 , 35 , 47 …”

“…Hearing loss occurred in decreasing order of prevalence in stages 3; 2; 1 and 4, characterizing a predominance of moderate to severe auditory disorders, similar to findings reported in MD. 24 , 30 , 31 , 32 , 33 , 34 , 35 , 36 …”

“…MD duration was highly variable, ranging from a few months to two decades, with an average of less than six years, comparable to the literature, although longer duration has also been reported. 24 , 31 , 32 , 35 , 36 …”

“… 21 , 22 In the cVEMP record, electromyographic responses between 50 and 200 μv were accepted, to maintain the adequate and constant level of contraction. 23 , 24 …”