Gastrointestinal Bleeding
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Definition
Gastrointestinal (GI) bleeding refers to any bleeding that starts in the gastrointestinal tract.
Bleeding may come from any site along the GI tract, but is often divided into:
- Upper GI bleeding: The upper GI tract includes the esophagus (the tube from the mouth to the stomach), stomach, and first part of the small intestine.
- Lower GI bleeding: The lower GI tract includes much of the small intestine, large intestine or bowels, rectum, and anus.
Alternative Names
Lower GI bleeding; GI bleeding; Upper GI bleeding
Considerations
The amount of GI bleeding may be so small that it can only be detected on a lab test such as the fecal occult blood test. Other signs of GI bleeding include:
Massive bleeding from the GI tract can be dangerous. However, even very small amounts of bleeding that occur over a long period of time can lead to problems such as anemia or low blood counts.
Once a bleeding site is found, many therapies are available to stop the bleeding or treat the cause.
Common Causes
GI bleeding may be due to conditions that are not serious, including:
However, GI bleeding may also be a sign of more serious diseases and conditions, such as the following cancers of the GI tract:
Other possible causes of GI bleeding include:
- Abnormal blood vessels in the lining of the intestines (also called angiodysplasias)
- Bleeding diverticulum, or diverticulosis
- Crohn's disease orulcerative colitis
- Esophageal varices
- Esophagitis
- Gastric (stomach) ulcer
- Intussusception (bowel telescoped on itself)
- Mallory-Weiss tear
- Meckel's diverticulum
- Radiation injury to the bowel
References
Bjorkman D. GI hemorrhage and occult GI bleeding. In: Goldman L, Ausiello D. Cecil Textbook of Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 137.
Savides TJ, Jensen DM. Gastrointestinal bleeding. In: Feldman M, Friedman LS, Brandt LJ, eds. Sleisenger and Fordtran's Gastrointestinal and Liver Disease. 9th ed. Philadelphia, Pa: Saunders Elsevier;2010:chap 19.
Review Date: 1/31/2011
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; and George F. Longstreth, MD, Department of Gastroenterology, Kaiser Permanente Medical Care Program San Diego, California. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2004 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
Alternative Names
Lower GI bleeding; GI bleeding; Upper GI bleeding
Home Care
There are home stool tests for microscopic blood that may be recommended for people with anemia or for colon cancer screening.
Call your health care provider if
Call for an appointment with your doctor if:
What to expect at your health care provider's office
GI bleeding is diagnosed by a doctor -- you may or may not be aware of its presence.
GI bleeding can be an emergency condition requiring immediate medical attention. Treatment may involve:
- Blood transfusions
- Fluids and medicines through a vein
- Esophagogastroduodenoscopy (EGD) - a thin tube with a camera on the end is passed through your mouth into your esophagus, stomach, and small intestine
- A tube is placed through your mouth into the stomach to drain the stomach contents (gastric lavage)
Once your condition is stable, you will have a physical examination, including a detailed abdominal examination.
You will also be asked questions about your symptoms, including:
- When did you first notice symptoms?
- Did you have black, tarry stools or red blood in the stools?
- Have you vomited blood?
- Did you vomit material that looks like coffee grounds?
- Do you have a history of peptic or duodenal ulcers?
- Have you ever had symptoms like this before?
- What other symptoms do you have?
Tests that may be done to find the source of the bleeding include:
- Abdominal CT scan
- Abdominal MRI scan
- Abdominal x-ray
- Angiography
- Bleeding scan (tagged red blood cell scan)
- Blood clotting tests
- Capsule endoscopy (camera pill that is swallowed to look at the small intestine)
- Colonoscopy
- Complete blood count (CBC), clotting tests, platelet count, and other laboratory tests
- Enteroscopy
- Sigmoidoscopy
References
Bjorkman D. GI hemorrhage and occult GI bleeding. In: Goldman L, Ausiello D. Cecil Textbook of Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 137.
Savides TJ, Jensen DM. Gastrointestinal bleeding. In: Feldman M, Friedman LS, Brandt LJ, eds. Sleisenger and Fordtran's Gastrointestinal and Liver Disease. 9th ed. Philadelphia, Pa: Saunders Elsevier;2010:chap 19.
Review Date: 1/31/2011
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; and George F. Longstreth, MD, Department of Gastroenterology, Kaiser Permanente Medical Care Program San Diego, California. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2004 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
Review Date: 1/31/2011
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; and George F. Longstreth, MD, Department of Gastroenterology, Kaiser Permanente Medical Care Program San Diego, California. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2004 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.