Abstract
Total colonoscopy was carried out in 927 cases during the past year with the "Shinya Technique". There are three main method of insertion : "Hooking the fold" (28.3%), " right turn shortning" (65.5%) and the "alpha-loop" (4.5%). Dr. Shinya's technique is characterized as a "one man technique", utilizing coordinated motions between the right & left hand in withdrawing and rotating the scope. This helps in telescoping and straightening the bowel as the scope is being advanced. The scope was successfully introduced into the descending colon in most cases (99.7%). The "alpha loop maneuver" has been commonly used by most Japanese colonoscopist. However, Dr. Shinya's method has proved to be effective in not only the short sigmoid but the redundant sigmoid colon as well. Total colonoscopy was carried out succesfully with the use of the CF-IBW scope (Olympus) and FC-38 (Pentax) in 345 of 359 cases (96.1%). Comparative studies of the insertion succes rate, time required and insertion technique through the sigmoid was made between the two instruments. Abdominal manipulations were required less frequently with the FC-38 scope probably due to the increased rigidity of the instrument. From Dr. Shinya's point of view, a scope with a slight increase in stiffness of the shaft is more desirable. Our study indicates that total colonoscope can be carried out, in most cases, within as short a period of time as an upper GI endoscopy.
