Finally, a third enema of 2500 cc's is prepared. Renee is positioned on her left side in the Simms position and after inserting the inflatable nozzle into Renee's rectum, the nurse inflates it and releases the clip on the hose so that the warm water will flow into her colon. Renee is instructed to turn onto her stomach and then onto her right side, giving the warm enema a chance to move completely through her colon. The human colon has an approximate capacity of 2500 cc's so this final enema should be adequate to prepare Renee for her procedure. The nurse confirms that the return is clear and allows Renee to return to her room to rest before being taken to the radiology department.