Delechenault P, Leroi A M, Bruna T, Denis P, Weber J
Groupe de Biochimie et de Physiopathologie Digestive et Nutritionnelle, UER Médecine et Pharmacie, Rouen, France.
Dis Colon Rectum. 1993 Jan;36(1):55-60. doi: 10.1007/BF02050302.
We describe the procedure with which cortical potential responses are evoked by a stimulation of the anal canal to assess the integrity of its sensory pathways. These potentials were recorded in 66 patients. In 44 patients, a cortical evoked response was obtained with a succession of positive and negative peaks, W shaped (35 cases) or V shaped (nine cases). In seven cases, cortical responses were interpreted differently by two independent observers. In these seven patients, such differences could be explained by an insufficient amplification of the recorded electrical waves recorded on paper (< 10 mm). Fifteen patients gave no cortical response. Eight had a neurologic disease that could explain the lack of response. In the seven others, the absence of response was considered as false negative, but six of these stimulations had been carried out during the first part of the study. There is some evidence that cortical evoked potentials may be obtained after an electrical stimulation of the anal canal, but a training period seems necessary to master the technique and obtain reproducible and recognizable responses.
我们描述了通过刺激肛管诱发皮层电位反应以评估其感觉通路完整性的过程。对66例患者记录了这些电位。44例患者获得了皮层诱发反应，出现一系列正负波峰，呈W形（35例）或V形（9例）。7例患者的皮层反应被两名独立观察者做出了不同解读。在这7例患者中，这种差异可归因于记录在纸上的电波放大不足（<10毫米）。15例患者未出现皮层反应。8例有可解释无反应的神经系统疾病。其他7例中，无反应被视为假阴性，但其中6例刺激是在研究的第一阶段进行的。有证据表明，电刺激肛管后可能获得皮层诱发电位，但似乎需要一个训练期来掌握该技术并获得可重复和可识别的反应。
