Key result
Reduced vertebral artery flow is linked to more frequent pathological auditory evoked potentials.
Why the study?
The diagnostic significance and correlation between auditory evoked potentials and color Doppler sonography findings in patients with vertebrobasilar insufficiency were not established.
Do auditory evoked potentials (AEP) correlate with color Doppler sonography findings in diagnosing vertebrobasilar insufficiency?
Cross-Sectional (n=48)
No
Do auditory evoked potentials (AEP) correlate with color Doppler sonography findings in diagnosing vertebrobasilar insufficiency?
Pathological findings of auditory evoked potentials correlate well with color Doppler findings of vertebrobasilar insufficiency, suggesting AEP as a useful additional diagnostic marker.
Answers are grounded in this paper and cite their sources.
Supports AEP as potential adjunct in vertebrobasilar insufficiency; leaves open prospective validation before diagnostic adoption.
Auditory evoked potentials (AEP) represent an electrophysiological method used in the diagnostics of pathological changes of the brainstem. Patients with vertebrobasilar insufficiency (VBI) show changes in the AEP-caused ischemia of the brain structures that generate their responses. The aim of the study was to determine the diagnostic significance and correlation among the findings of AEP in patients with VBI established by color Doppler sonography. The cross-sectional and prospective research included 48 inpatients and outpatients treated at the Clinic of Neurology, Clinical Center Nis. Ultrasound Doppler of blood vessels in the neck included an examination of the carotid blood vessels, the outcome and all sonographically available parts of the vertebral artery (VA) with particular emphasis on the intravertebral segment (V2). The morphological and hemodynamic characteristics of VA in this segment were monitored, and it was important to test the systolic velocity in two adjacent intervertebral spaces. Auditory evoked potentials were used to monitor the amplitudes, absolute latencies of waves I, II, III, IV, and V, as well as interwave latencies (IWLs) I-III, III-V, and I-V. There is statistically significant difference in the more frequent pathological finding of AEP in patients with higher degree of the reduced flow of VA established by color Doppler (P < 0.05) compared to patients with less reduction in the flow. Pathological findings of AEP are well correlated with pathological findings of VBI in color Doppler, and it may be applied as an additional and useful marker in diagnosis of VBI.
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Živadinović et al. (2014) conducted a cross-sectional in Vertebrobasilar insufficiency (VBI) (n=48). Higher degree of reduced flow of vertebral artery vs. Less reduction in the flow was evaluated on Pathological finding of auditory evoked potentials (AEP) (p=< 0.05). A higher degree of reduced vertebral artery flow established by color Doppler was associated with more frequent pathological findings on auditory evoked potentials.
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