The brachial plexus at the interscalene level is seen lateral to the carotid artery, between the anterior and middle scalene muscles (Figures 2, 3, and 4). Prevertebral fascia, superficial cervical plexus and sternocleidomastoid muscle are seen superficial to the plexus.he goal of the continuous interscalene block is similar to the non-ultrasound-based techniques: to place the catheter in the vicinity of the trunks of the brachial plexus between the scalene muscles.
A colonoscopy is similar to a sigmoidoscopy, but a longer flexible viewing tube called a colonoscope is used to examine the entire colon and (if necessary) the lower portion of the small intestine. It is typically performed to detect colorectal cancer and to determine the causes of rectal bleeding, chronic diarrhea, chronic constipation, or abdominal pain.
A colonoscopy is an examination of the lining of the colon with a lighted, flexible tube about the thickness of your finger. The doctor will insert the tube through your rectum and up through your colon, checking for abnormalities.Often during the colonoscopy, your doctor may perform other minor procedures such as a polyp removal. In addition, if necessary, a small piece of tissue (a biopsy) can be taken for examination in the lab.Please note that biopsies are taken for many reasons and do not necessarily imply cancer.ften during the colonoscopy, your doctor may perform other minor procedures such as a polyp removal. In addition, if necessary, a small piece of tissue (a biopsy) can be taken for examination in the lab. Please note that biopsies are taken for many reasons and do not necessarily imply cancer.