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The main objective of this study is to determine the frequency of different gastrointestinal disorders as the cause of diarrhea in patients at a tertiary referral center using confocal laser endomicroscopy.
Diarrhea is characterized by frequent, loose, and watery bowel movements. Common causes include various gastrointestinal infections (e.g. clostridium difficile, salmonella), inflammatory bowel disease (ulcerative colitis, Crohn´s disease), drugs (e.g. antibiotics) and malabsorption syndromes (e.g. celiac and Whipple's disease). Confocal laser endomicroscopy (CLE) is rapidly emerging as a valuable tool for gastrointestinal endoscopic imaging, enabling the endoscopist to obtain an "optical biopsy" of the gastrointestinal mucosa during the endoscopic procedure.
In patients with diarrhea.
Patients were randomized in two groups. Group 1: Patients underwent standard video colonoscopy for the evaluation of their symptoms. Group 2: During the endoscopic procedure CLE will be performed additionally.
The patient underwent colonoscopy. In Group 2 patients´ will receive intravenous fluorescein or topical mucosal staining with acriflavin or cresyl violet during the procedure, followed by in-vivo CLE of the tissue. Confocal images are digitally saved and analyzed afterwards.
Time Perspective: Prospective
Colonoscopy, Confocal Laser Endomicroscopy
University of Erlangen-Nürnberg Medical School
Published on BioPortfolio: 2014-08-27T03:15:48-0400
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A technique utilizing a laser coupled to a catheter which is used in the dilatation of occluded blood vessels. This includes laser thermal angioplasty where the laser energy heats up a metal tip, and direct laser angioplasty where the laser energy directly ablates the occlusion. One form of the latter approach uses an EXCIMER LASER which creates microscopically precise cuts without thermal injury. When laser angioplasty is performed in combination with balloon angioplasty it is called laser-assisted balloon angioplasty (ANGIOPLASTY, BALLOON, LASER-ASSISTED).
A light microscopic technique in which only a small spot is illuminated and observed at a time. An image is constructed through point-by-point scanning of the field in this manner. Light sources may be conventional or laser, and fluorescence or transmitted observations are possible.
Techniques using laser energy in combination with a balloon catheter to perform angioplasty. These procedures can take several forms including: 1, laser fiber delivering the energy while the inflated balloon centers the fiber and occludes the blood flow; 2, balloon angioplasty immediately following laser angioplasty; or 3, laser energy transmitted through angioplasty balloons that contain an internal fiber.
A condition characterized by chronic watery DIARRHEA of unknown origin, a normal COLONOSCOPY but abnormal histopathology on BIOPSY. This syndrome was first described in 1980 by Read and associates. Subtypes include COLLAGENOUS COLITIS and LYMPHOCYTIC COLITIS. Both have similar clinical symptoms and are distinguishable only by histology.
A subtype of MICROSCOPIC COLITIS, characterized by chronic watery DIARRHEA of unknown origin, a normal COLONOSCOPY but abnormal histopathology on BIOPSY. Microscopic examination of biopsy samples taken from the COLON show larger-than-normal band of subepithelial COLLAGEN.
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Food is any substance consumed to provide nutritional support for the body. It is usually of plant or animal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism ...