Abstract
Recto-anal motility response to bladder distension was studied under general anaesthesia in 12 patients undergoing intestinal resection for Crohn's disease of the small intestine or colonic cancer. The effect of epidural anaesthesia on anal tone and on the motility response to bladder distension was studied in six of these patients. An anal pressure increase on bladder distension was observed in all individuals. No motility response was noted in the rectum. The anal pressure response to bladder distension was abolished by epidural anaesthesia. It was concluded that anal pressure in man under general anaesthesia was tonically influenced by the thoracolumbar sympathetic outflow. An excitatory vesico-anal reflex was demonstrated. It appears as this reflex is mediated via the spinal cord.
Résumé
La réponse motrice recto-anale à une distension de la vessie a été étudiée sous anesthésie générale chez 12 patients devant subir des résection intestinales pour une maladie de Crohn ou un cancer colique. L'effect d'une anesthésie épidurale sur le tonus anal et sur la réponse motrice à une distension vésicale a été étudiée chez 6 de ces patients. Une augmentation de la pression anale secondaire à la distension vésicale a été observée chez tous les sujets. Aucune réponse motrice n'a été observée au niveau du rectum. L'anesthésie épidurale abolit la réponse au niveau du sphincter à la distension vésicale. On conclut de cette étude que la pression anale chez l'homme sous anesthésie générale est influencée par le système sympathique thoraco-lombaire. Un réflexe d'excitation vésico-anale a été mis en évidence. Ce réflexe passe la moëlle épinière.
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Buntzen, S., Nordgren, S., Delbro, D. et al. Anal and rectal motility responses to distension of the urinary bladder in man. Int J Colorect Dis 10, 148–151 (1995). https://doi.org/10.1007/BF00298537
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DOI: https://doi.org/10.1007/BF00298537