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KMID : 0361020200630040154
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Korean Journal of Otolaryngology - Head and Neck Surgery
2020 Volume.63 No. 4 p.154 ~ p.162
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The Factors Influencing the Accuracy of Head Position During Canalith Reposition Procedure Using 9 Axis Inertial Sensor
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Hong Hyung-Sun
Kim Ki-Nam
Yun Chang-Bin
Kang Jin-Gu
Kim Hyun-Ji
Lee Sang-Min
Kim Kyu-Sung
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Abstract
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Background and Objectives: The canalith reposition procedure (CRP) is used for the treatment of benign paroxysmal positional vertigo (BPPV) where the accuracy of position may affect the therapeutic efficacy. We investigate the accuracy of head position in CRP and its influencing factors during the procedure by measuring the position using inertial sensors and three dimensional remodeling.
Subjects and Method: We included 28 patients who were diagnosed as BPPV. To evaluate the accuracy of the CRP, we used the inertial sensor on the patient’s goggle used for videonystagmography. We evaluated the accuracy of the treatment compared to the textual treatment used during CRP. We also evaluated patient factors that affected the accuracy of head position as well as analyzing the correlation between the error rate and the successful treatment rate.
Results: While the average error rate was 12.6±5.8% for the PSCC group, it was 10.2±5.2% for the lateral semicircular canal (LSCC) group. For the posterior semicircular canal (PSCC) the group with body mass index (BMI), less than 25 patients had the lower error rate than the group with BMI greater than 25. There was no significant differences regarding the error rate according to BMI or age in the PSCC group. There is no significant differences regarding the error rate between those treated within 1 week and those over 1 week. For the LSCC delayed treatment group, there was no significant differences of error rate between the 1st and 2nd maneuver at each position.
Conclusion: For the Epley maneuver, the error rate of patients with high BMI is higher than those with low BMI. When the repeated barbeque maneuver was conducted, patients could have a more accurate position due to the learning effect. Care should be taken to ensure accurate CRP by considering various factors.
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KEYWORD
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Benign paroxysmal positional vertigo, Inertial Sensor, Vertigo
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