Publicación Oficial de la Sociedad Ecuatoriana de Neurología, de la Liga Ecuatoriana Contra la Epilepsia y de la Sociedad Iberoamericana de Enfermedad Cerebrovascular

Autonomic Nervous System

 

Valoración por Ultrasonido del Nervio Vago en el Síndrome de Guillain-Barré: A Propósito de un Caso Clínico

Introduction: In Guillain-Barré Syndrome (GBS), an increased cross-sectional area (CSA) of the vagus nerve (VN) has been described as a diagnostic tool and as an indicator of autonomic dysfunction.

Methods and Objectives: With the presentation of a GBS case, we aim to describe the technique for assessing the CSA of the VN using ultrasound (US).

Results: The evaluation of the VN CSA by US is a diagnostic technique with several advantages for clinicians. CSA values greater than 3 mm² are associated with the demyelinating variant of GBS and a higher likelihood of autonomic dysfunction.

Conclusion: The assessment of VN CSA by US is a useful tool in the diagnostic approach to patients with suspected GBS.

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Palabras clave: diagnóstico por imagen, Nervio vago, Síndrome de Guillaín-Barré, Sistema Nervioso Autónomo, Ultrasonografía,

Keywords: Autonomic Nervous System, diagnostic imaging, Guillain Barre syndrome, Ultrasonography, Vagus Nerve,

Enfermedad de Parkinson y Respuesta Autonómica al Dolor. Parkinson’s Disease And Autonomic Pain Response.

A clinical case of PD is provided in which we analyze the autonomic involvement in response to pain, using various neurophysiological parameters. After the neurophysiological examination of pain thresholds (hand grip), this patient with 13 years history of Parkinson’s disease, showed a peripheral decrease that made the measurement of blood pressure not very stable. Sympathetic activity and nociceptive sensitivity were diminished, expressing the postganglionar noradrenergic myocardial denervation as it is widely known in parkinsonian patients. It is important to have in mind the autonomic nervous system involvement in Parkinson’s disease.

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Palabras clave: Actividad simpática, dolor, enfermedad de Parkinson, Examen neurofisiológico, Sistema Nervioso Autónomo,

Keywords: Autonomic Nervous System, Neurophysiological examination, pain, Parkinson’s disease, Sympathetic activity,
 
 
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