The doppler`s ultrasonography in patients suffering from vertigo

Authors

Dr. med. Jorge Said Martinez (Mexico D.F., Mexico)
Dr.med. Alfonso Izita (Mexico D.F., Mexico)
Psicol. Ana Luisa Gonzalez (Mexico D.F., Mexico)
Ing. Alejandro Meneses (Mexico D.F., Mexico)

Proceedings

ASN - Volume 1 - 2003

Topics

Neurootology
Neurology
Diseases
Neurootology
Equilibrium
Equilibriometric tests
Neurootology
Equilibrium
Neurootology
Neurology
Neurootology

Keywords

Doppler Sonography, Vertigo.

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Abstract

The left ventricle is a pump which applies pressure to the circuit on an intermittent way (with each systolic ejection) and sets a pattern of pulsatile flow.
In systole (Maximum Systolic Speed, MSS), the elastic arterial wall is strained (Capacitance) to store certain volume of blood, which will be returned to the circulation during the diastole (Final Diastolic Speed, FDS), when the artery returns to its recess caliper (kinetic energy). The supraorbitary flow is the result of the hydrodynamic compensation between the internal and external carotid system. The vertebral arteries together with the internal carotids are in charge of the irrigation of the cerebral trunk, which is the place of setlement of the centers of coordination of the balance.
Upon researching 2,500 patients suffering from vertigo (Dr. Bertora and Dra. Bergman) found that 48.16 % of the cases have backgrounds of vacular origin prevailing within this group patologies which are secondary to the process of hydrodynamic alternations within the capillary with averages of 20.92% for hypotension and 20.24% for hypertension. We have (100 patientes) similars results.In 90% of the cases, the symptom of vertigo can onset in any of its expressions from lack of stability up to the total loss of the balance as a consecuence.
Thus, it is important to have a diagnostic method for the valuation of this type of patients which be easy, quick, reliable and of relative low cost, so we have found that the Doppler´s method has all of the above characteristics, being also a noninvassive and multiplanar method, which has a diagnostic accuracy of 90% aprox. in some cases.
Through the Doppler´s Ultrasonography of head and neck (USD), the modern physician can help himself to complement his better Diagnostic, correlating all the background, clinical description, vestibular results (exploration of vestibuloespinal, retinalocular and vestibuloocular systems of the patient suffering from vertigo.