All patients were diagnosed with BVP after the bithermal caloric test (SLVNG; SLMED, Seoul, Korea), RCT (NOTC-S; Neuro Kinetics, Pittsburgh, PA, USA), and vHIT (ICS Impulse; Otometrics, Taastrup, Denmark) were performed. Those tests were performed by the protocols used in the previous reports [13 (link),14 (link)]. In addition to those tests, CDP (SMART EquiTest; Natus Medical Inc, Pleasanton, CA, USA) tests were performed to test balance maintenance. The composite and vestibular scores in the sensory organization test of the CDP were calculated using the weighted average of the equilibrium scores. The cervical and ocular vestibular-evoked myogenic potential (cVEMP and oVEMP) responses were recorded in the ipsilateral sternocleidomastoid muscle (cVEMP) or the contralateral inferior oblique ocular muscle (oVEMP; Audera, GSI, Eden Prairie, MN, USA) by 95 dB HL, 500 Hz tone burst stimulation. We categorized the results of the VEMP tests into “presence” and “absence” of the response. All the patients were surveyed using the Korean version of the DHI at initial diagnosis.
Smart equitest
Manufactured by Natus
Sourced in United States
The SMART EquiTest is a laboratory equipment designed for balance and postural assessment. It measures an individual's postural sway and balance reactions in response to sensory manipulations. The device uses a movable platform and various sensory inputs to evaluate an individual's ability to maintain balance and postural control.
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Lab products found in correlation
2 protocols using smart equitest
1
Comprehensive Vestibular Assessment for BVP
2
Postural Stability Evaluation with Force Plate
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A wooden block (46 cm W x 43 cm L x 31 cm H) was centered on a Smart Equitest (Natus) force plate, with an overlying foam pad (13 cm thick) for subject comfort and skin protection [33 (link)]. Participants were seated without back support, with hip, knee, and ankle angles at approximately 90 degrees, and arms folded across the chest. In the Limits of Stability test, participants were instructed to shift their center of gravity (represented as an avatar in real time) toward eight surrounding targets on a computer monitor. Key measures were endpoint and maximal excursion of the center of gravity (EPE and MXE), and directional control (DCL) of intended movements. In the Clinical Test of Sensory Integration on Balance, participants were asked to maintain static upright posture for 10 seconds each under four conditions: 1) arms crossed over the chest with eyes open; 2) arms over the chest with eyes closed; 3) arms outstretched forward with eyes open; 4) arms outstretched forward with eyes closed. Each condition was tested three times. COP angular displacement in the mediolateral and anteroposterior planes was averaged over 10 seconds per trial. The primary static outcome measure of sway velocity represents the difference in average sway (degrees per second) in the eyes-closed versus the eyes-open arms crossed condition.
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