Bleeding Per Rectum

Posted by e-Medical PPT Saturday, February 26, 2011
A lower Gastrointestinal Bleed is referred as any bleed that occures distal to the ligament of Treitz and superior to the anus. This includes the last 1/4 of the duodenum and the entire area of the jejunum, ileum, colon, rectum, and anus.The stool of a person with a lower gastrointestinal bleed is a good indication of where the bleeding is occurring. Black tarry appearing stools medically referred to as Melena usually indicates blood that has been in the GI tract for at least 8 hours. Melena is four-times more likely to come from an upper gastrointestinal bleed than from the lower GI tract.Bright red stool, called hematochezia, is the sign of a fast moving active GI bleed.The bright red or Maroon color is due to the short time taken from the site of the bleed and the exiting at the anus. The presence of hematochezia is six-times greater in a lower Gastrointestinal Bleeding than with a upper Gastrointestinal Bleeding.
The following are possible diagnosis of a lower Gastrointestinal Bleeding:
  • Hemorrhoids are a common occurrence
  • Anal fissures
  • Ulcerative colitis
  • Radiation colitis
  • Diverticulosis
  • Mesenteric ischemia
  • colonic polyps
  • colon cancer

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