Gastrointestinal bleeding refers to any bleeding that starts in the gastrointestinal tract, which extends from the mouth to the large bowel. The amount of bleeding can range from nearly undetectable to acute, massive, and life threatening. Bleeding may come from any site along the gastrointestinal tract, but is often divided into:
Gastrointestinal bleeding can range from microscopic bleeding (the amount of blood is so small that it can only be detected by laboratory testing) to massive bleeding (pure blood is passed).
It is important to be aware of gastrointestinal bleeding, because it may point to many significant diseases and conditions. Prolonged microscopic bleeding can lead to massive loss of iron, causing anemia. Acute, massive bleeding can lead to hypovolemia, shock, and even death.
Gastrointestinal bleeding can occur at any age from birth on. The degree and suspected location of the bleeding determines what tests should be performed to find the cause. Once a bleeding site is identified, many therapies are available to stop the bleeding.
Some of the possible causes of gastrointestinal bleeding include:
There are home stool tests for microscopic blood that may be recommended for people with anemia or for colon cancer screening.
Call for an appointment with your doctor if:
GI bleeding can be an emergency condition requiring immediate medical attention. Intravenous fluids and medications, blood transfusions, drainage of the stomach contents through a nasogastric (NG) tube, and other measures may be required.
Once the condition is stable, a physical examination, including a detailed abdominal examination, will be performed.
Medical history questions to document GI bleeding in detail may include:
GI bleeding is diagnosed by a doctor -- you may or may not have been aware of its presence.
Diagnostic tests may include: