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La denervación simpática de la extremidad superior mejora el rendimiento del ejercicio del antebrazo y la

A Kardos¹, D J Taylor, C Thompson

¹University Department of Cardiovascular Medicine, University of Oxford, UK.

|June 14, 2000

Resumen

La trunkotomía simpática mejoró significativamente la duración del ejercicio del antebrazo y la bioenergética muscular al aumentar el flujo sanguíneo y reducir las alteraciones metabólicas. Este procedimiento mejora la función del músculo esquelético y la capacidad de ejercicio.

Área de la Ciencia:

Fisiología Fisiología Fisiología.
Ciencias del ejercicio Ciencia del ejercicio.
Intervención quirúrgica Intervención quirúrgica

Sus antecedentes:

La activación del sistema nervioso simpático puede impedir el rendimiento del ejercicio.
Esto puede ocurrir a través de un flujo sanguíneo muscular restringido o un metabolismo alterado del músculo esquelético.
El estudio investigó el impacto de la trunkotomía simpática en estos factores.

Objetivo del estudio:

Para evaluar el efecto de la trunkotomía simpática toracoscópica (TST) en el ejercicio.
Para evaluar los cambios en el flujo sanguíneo del antebrazo y la bioenergética muscular después de la cirugía.
Para determinar si la denervación simpática mejora el rendimiento del ejercicio.

Principales métodos:

Trece pacientes con hiperhidrosis palmar idiopática se sometieron a una truncotomía simpática toracoscópica derecha (TST).
La duración del ejercicio del antebrazo, el flujo sanguíneo y la bioenergética muscular (fosfocreatina, pH) se midieron antes y después de la TST.
Las mediciones incluyeron la frecuencia cardíaca, la presión arterial media y la espectroscopia de resonancia magnética (31) P.

Principales resultados:

La duración del ejercicio aumentó significativamente tanto en el antebrazo derecho (de 8,9 a 13,4 minutos) como en el izquierdo (de 5,7 a 7,6 minutos) después del TST.
El flujo sanguíneo del antebrazo en reposo a la derecha aumentó en un 66% después de TST.
La acidificación muscular y el agotamiento de la fosfocreatina se redujeron durante el ejercicio, con una respuesta de presión embotada en el lado derecho.

Conclusiones:

La denervación simpática de la extremidad superior mejora significativamente la bioenergética del músculo esquelético del antebrazo.
El procedimiento conduce a mejoras sustanciales en el rendimiento del ejercicio.
TST es una intervención efectiva para mejorar la capacidad de ejercicio en poblaciones de pacientes relevantes.

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