WHERE IN SIGMOID COLON TO START SHORTENING

There are two insertion methods in the sigmoid colon: In Push method, as the name indicates, the scope is pushed until passing SD (sigmoid-descending colon junction), while in the Pull method the scope is pulled back at right over the S-top.

Push method; push the scope to SD and form a loop once. Then hook the scope and dissolve the loop.

Pull method; hook the scope at the S-top and shorten the colon so that the intestine is straightened when SD is reached.

WHERE IN TRANSVERSE COLON TO START SHORTENING

With the Push method, the scope is pushed until passing the hepatic flexure. During the Pull method, pulling starts at the center of the transverse colon.

Like in the sigmoid colon, a loop is dissolved after the tip of the scope is pushed to reach the hepatic flexure.

During the Pull method, pulling starts at the center of the transverse colon and the colon is straightened when the hepatic flexure is reached.

　

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