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[Prevalence of neurosonographic disturbances in chronic instability]
N García-Barragán1, R Hernández-Lorido, R M Sánchez-Pérez
1Laboratorio de Neurosonología y Unidad de Ictus, Servicio de Neurología, Hospital General Universitario de Alicante, 03010 Alicante, España.
Introduction:
Dizziness is a common symptom at the outpatient clinic of family doctors. Its origin is usually multifactorial and its outcome is often benign. However, exists a tendency to relate the dizziness with a cerebrovascular disturbance. AIM. To determine if there are cerebrovascular disorders in patients with chronic dizziness using a non invasive technique.
Patients And Methods:
A prospective study was conducted. It included 404 patients without limit of age. The patients were evaluated in a Neurology Outpatient Clinic, to select those patients with chronic instability. A neurosonographic exam was performed to all those selected patients. This exam included colour duplex of the cervical arteries and transcranial Doppler.
Results:
Up to 54 % of the patients who were included in the study had a normal carotid study. For the rest of the patients, the thickness intima-media was the most prevalent finding. At the vertebrobasilar system the study of the vertebral arteries was completely normal in 81.7% followed by the presence of microangiopathy in 12.1%. The basilar system was also normal in a high figure (78%) followed by the microangiopathy (17.1%).
Conclusions:
The vascular disturbances in the vertebrobasilar system are an exceptional finding in patients with chronic instability.
