2014年10月19日日曜日

A linear sigmoid colon passage method in colonoscopy

Satoshi Awazu, Nagasaki, Japan    

  We discovered a phenomenon whereby the rectosigmoid junction becomes linear when the patient is moved from a left lateral to left semiprone position and the colonoscope can be readily inserted into the sigmoid colon. 
              
Figure 1. The phenomenon we discovered. The colonoscope tip reached the rectosigmoid junction. When the endoscopist moved the patient from a left lateral to left semiprone position with the colonoscope slightly pushed with twisting to the left, the visual field broadened, both the rectosigmoid junction and colonoscope simultaneously became linear, and the colonoscope tip was readily inserted into the sigmoid colon. Rectosigmoid junction (▲).   
  
  Therefore, this phenomenon was applied to our conventional insertion method to determine whether the colonoscope looping rate in the sigmoid colon can be reduced. 
  Please refer to the following links: 

    https://peerj.com/preprints/535v1.pdf 
    http://dx.doi.org/10.7287/peerj.preprints.535v1 

    http://dx.doi.org/10.1016/j.gie.2011.11.005      

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