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.
Colonoscopy is an outpatient procedure during which your large bowel (colon and rectum) is examined from the inside. Colonoscopies are usually used to evaluate symptoms like abdominal pain, rectal bleeding, or changes in bowel habits.They are also used to screen for colorectal cancer.he procedure is performed by a doctor experienced in colonoscopy and lasts approximately 30 to 60 minutes. Medications will be put into your vein to make you feel relaxed and drowsy. You will be asked to lie on your left side on the examining table.