Single Contrast Barium Enema (cont.)
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Conduct of the Examination
(cont.)
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- Roll the patient backward into a RPO position.
- Again instruct the assistant to partially unclamp the tubing
and allow the barium to slowly flow by gravity through the rectosigmoid
colon while you pan back and forth with the fluoroscope between the head
of the barium column and the sigmoid region.
- When the sigmoid colon is well
filled, take a spot image of the rectosigmoid colon in the RPO
position.
![](0_RPO.jpg) ![BE RPO Sigmoid spot](BE_RPOspot.jpg)
NOTE: Instruct the assistant to
automatically clamp the enema tubing each time you ask the patient to
"stop breathing" for a spot film and not to unclamp the tubing until you
request it. Each time the tubing is unclamped, it should be done slowly
in order to prevent rapid colon distention, which will produce
colorectal spasm and premature evacuation.
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