Bowel Information and Courses from MediaLab, Inc.
These are the MediaLab courses that cover Bowel and links to relevant pages within the course.
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|Peritoneal lavage Trauma STAT|
Peritoneal lavage is performed in the trauma setting to evaluate the extent of a patient's injury from blunt force trauma to the chest and abdomen. Sterile physiological saline is infused into the peritoneal cavity and then retrieved. The color and clarity of the extracted fluid provides information on the extent of internal injuries if present. Bloody fluid indicates organ laceration and hemorrhage. Muddy brown fluid indicates a bowel perforation.These photos are from the peritoneal lavage specimen of a child in a motor vehicle accident who was not in a child safety seat. Her large intestine was ruptured when she hit the seat-back in front of her. Notice the variety of intra and extra cellular bacteria, and possibly small yeast forms. These organisms represent the normal intracolonic flora which seeded the peritoneal cavity when her bowel ruptured (see arrows).
Notice the wide variety of bacterial types that are present in this smear. This variety reflects the diversity of organisms that make up normal bowel flora.When the bowel is torn or punctured, an incredibly large amount of bacteria and foreign matter is released into the peritoneal space. The body's immune responses draw many white blood cells to the area to remove this material. Since there is such a large amount of bacteria to remove, many of the white cells are overwhelmed by the amount of debris that they ingest.
|Toluidine Blue Staining - Diagnostic Applications|
The toluidine blue staining protocol is typically used to detect changes in mast cells due to various allergic reactions. Mast cells are located throughout the connective tissues and respond to allergens by releasing their contents (histamine and heparin granules) into the surrounding tissue, producing a response. These conditions could range from simple allergic reactions in the skin to coronary inflammation, interstitial cystitis, and irritable bowel syndrome (IBS).
|A 31 year old male missionary worker recently returned from Africa where he helped a small rural community update their sanitation practices. He presented to his physician weak and complained of recent weight loss, abdominal pain, and diarrhea that was often bloody. The doctor ordered a battery of tests including a complete blood count (CBC) and stool for parasite examination. The CBC revealed eosinophilia and anemia. This suspicious form was seen on the wet preparations. It measured 52 µm by 27 µm. What parasite is mostly likely present?||View Page|