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.
Colonoscopy is a potentially life-saving procedure and the gold standard for colon cancer screening and prevention, but is only successful if the bowel is completely cleansed beforehand. This is an involved process, and for many patients represents one of the greatest barriers to having a colonoscopy. In truth, most people tolerate the colonoscopy âprepâ process without any difficulty. But some donât. Traditionally, gastroenterologists recommend a clear liquid diet (no solid food) for the entire day before the procedure, and upwards of 36 hours depending on the timing of the test.