Biomedical subjects

Guillermo O Bertora

Publications and source records attributed to Guillermo O Bertora.

3 recordsLinked to original sources

PubMed2003

Balance platform: mathematical modeling for clinical evaluation.

This study describes from a technological and mathematical point of view a systematic method for daily patient equilibrium evaluation during clinical work. We present the hardware commonly used for center-of-gravity determination and the basic tasks of the soft ware that runs in a personal computer, including an original procedure for rehabilitation measure. Using a simple approach, the method allows quantification of amelioration of the patient's condition and provides very useful (and, in practice, effective) distribution percent ages for visual, somatosensory, and vestibular contributions to stability or sensory equilibrium organization.

Gravitation↗

PubMed2002

Cognitive disorders: diagnosis and treatment.

During the last half century, medical developments have expedited an increase of life expectancy all over the world. Owing to this extension of life, some pathological processes that formerly were considered to exhibit low prevalence now have become top priorities for public health programs. Among these pathological processes, cognitive diseases stand out, the two most frequent being Alzheimer's disease and cognitive disorders of vascular etiology, for which humans are at increased risk beyond age 65. We studied 120 adults with cognitive disorders representing a variety of etiologies. We performed a comparative statistical study between members of this group of patients and a group of general patients by means of different neurophysiological examinations: acoustically evoked potentials, P300, brain electrical activity mapping both in the resting state and under complex stimulation, and Doppler ultrasonographic extracranial and transcranial assessment. The comparative study between both populations revealed significant differences in results of the various tests. Neurotransmitter equilibrium (dopamine, acetylcholine, gamma-aminobutyric acid [GABA], etc.) in the areas of the cerebral cortex related to cognitive disorders is essential in the diagnosis and treatment of these diseases.

Adult↗

PubMed2002

Doppler ultrasonography in tinnitus patients.

Tinnitus can be functionally measured and localized through sensorimotor and neurosensory tests. According to our Neurofisiología Otooftalmológica data bank, 60% of patients requiring a consultation have a history of cardiocirculatory disorders. This figure has moved us to study cerebrovascular processes in those patients seeking consultation for a tinnitus symptom only. The sudden appearance of the tinnitus symptom alone independent of patient age, leads us to consider a pathology of vascular origin, which should be evaluated and treated immediately. A mistake or delay in the diagnosis could cause the symptom to become chronic, owing to the appearance of microlesions at any level of the auditory pathway, as has been demonstrated in former investigations.

Adult↗