AI Summary & Key Takeaways
AI InsightFurther studies with larger groups are needed to verify our findings.
📌 3 Key Takeaways
Özet
Introduction: The aim of the present study was to evaluate cervical vestibular evoked myogenic potentials (cVEMPs) of patients with vertebrobasilar insufficiency (VBI). Methods: Patients with vestibular complaints who were referred to the vestibular center were evaluated. All patients underwent a complete neurological examination, pure tone and speech audiometry, bithermal caloric test, Doppler ultrasonography of the carotid and vertebral arteries, and bilateral cVEMP recordings. Thirty patients with VBI and 30 healthy controls were included in the study. In the cVEMP test, latency and amplitude values of 95 dB were recorded. Results: In the VBI group, the mean flow rate was 91.5±36.65 mL/min at the side of higher flow, whereas it was 74.83±34.75 mL/min at the side of lower flow. In the control group, the mean flow rate was 151.5±26.62 mL/min at the side of higher flow, whereas it was 140.5±33.69 mL/min at the side of lower flow. There was a statistically significant difference between vertebral artery flow values between the VBI and control groups (p<0.001). The right and left P13 95 dB latency values in the VBI (−) group were 13.22±0.21 ms and 13.22±0.21 ms, respectively, whereas those in the VBI (+) group were 16.15±0.11 ms and 16.23±0.14 ms, respectively. The right and left N23 95 dB latency values in the VBI (−) group were 23.09±0.14 ms and 25.39±0.88 ms, respectively, whereas those in the VBI (+) group were 23.07±0.14 ms and 25.71±0.81 ms, respectively. The right and left P13–N23 95 dB amplitude values in the VBI (−) group were 41.46±8.82 mV and 41.41±6.81 mV, respectively, whereas those in the VBI (+) group were 24.81±3.36 mV and 24.11±2.09 mV, respectively. There was a statistically significant difference between the VBI and control groups regarding latency and amplitude values at 95 dB nHL stimulation (p<0.001). Discussion and Conclusion: We believe that VBI is associated with abnormal cVEMP responses. Further studies with larger groups are needed to verify our findings.