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.
Some foods and beverages should be avoided before your colonoscopy. Avoid high-fiber foods such as large amounts of fruit, vegetables, cereals, bran and whole-grain pastas. Do not eat foods that may stick to your bowels and obstruct the cameraâs view, such as seeds. Red meat may be confused with internal bleeding and should be avoided or kept to a minimum, advises CCR.com.