Background. Interscalene nerve block refers to the technique of anesthetizing the roots or trunks of the brachial plexus in the neck between the anterior and middle scalene muscles.The procedure was first well described and popularized by Alon Winnie in 1970.pence et al compared the effectiveness of an injection between the middle scalene muscle and brachial plexus sheath (periplexus) with an injection within the brachial plexus sheath (intraplexus) in 170 patients. There was no difference between the 2 groups in block onset times or block quality.
It's worth the hassle. Colonoscopy can spot small colon cancers while they are treatable and before they have spread to other parts of the body. It can also detect and remove polyps, small growths that can develop into colon cancer.
During a colonoscopy, the physician examines the large intestine with a lighted scope, looking for polyps, small fleshy growths that can turn cancerous, or other abnormalities. It's easiest to visualize the colon if all residue and stool are removed before the procedure.lose up of popcorn Photo Credit luknaja/iStock/Getty Images. To decrease the amount of residue from food in the bowel before a colonoscopy, many healthcare centers tell you to avoid foods that contain high amounts of fiber and roughage, substituting low-residue foods for several days prior to your colonoscopy.