You will receive two enemas before the procedure because the rectum and lower intestine must be empty so that the intestinal walls can be seen. You will need to try to hold the enema solution for at least five minutes before releasing it. Make sure you arrange for a driver to bring you home after the colonoscopy.Because you receive sedating medication during the procedure, it is unsafe for you to drive or operate machinery for eight hours after the procedure.uring a colonoscopy, the doctor uses a colonoscope, a long, flexible, tubular instrument about 1/2 inch in diameter that transmits an image of the lining of the colon so the doctor can examine it for any abnormalities. The colonoscope is inserted through the rectum and advanced to the other end of the large intestine.
Radon is formed as one intermediate step in the normal radioactive decay chains through which thorium and uranium slowly decay into lead. Thorium and uranium are the two most common radioactive elements on earth; they have been around since the earth was formed.
A. Radon is a radioactive gas that is formed naturally by the breakdown of uranium in soil, rock and water. As a gas, radon is slowly released from the ground, water, and some building materials that contain very small amounts of uranium, such as concrete, bricks, tiles and gyproc.