Multimodal pain stimulations in patients with grade B oesophagitis

  • Drewes A
  • Reddy H
  • Pedersen J
 et al. 
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AIM: To obtain a better understanding of nociceptive processing in patients with oesophagitis. PATIENTS AND METHODS: Eleven patients with grade B oesophagitis were compared with an age and sex matched group of 16 healthy subjects. A probe was positioned in the lower part of the oesophagus. After preconditioning of the tissue, painful mechanical stimuli were applied as distensions with a bag using an impedance planimetric method. Distensions were done before and after pharmacological impairment of distension induced smooth muscle contractions. Thermal stimulation was performed by recirculating water at 1 and 60 degrees C in the bag. The area under the temperature curve (AUC) represented caloric load. The referred pain area (being a proxy for the central pain mechanisms) to the mechanical stimuli was drawn at maximum pain intensities. RESULTS: Patients were hyposensitive to mechanical stimuli, as assessed by the distending volume (F=8.1, p=0.005). After relaxation of smooth muscle with butylscopolamine, the difference between the two groups was more evident (F=27.4, p

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