What Causes Coffee Ground Vomitus?

Hemophilia B

Hemophilia B is a blood disorder that occurs because mutations in the F9 gene cause the absence or altered production of certain blood proteins that should clot the blood. Hemophilia B patients experience longer than normal bleeding after an injury, surgery, or any other blood vessel damage. The blood of an individual who has hemophilia B will eventually coagulate and clot, but takes longer than someone not affected by this disorder. Hemophilia B patients do not bleed any faster than individuals who are not affected but may bleed more frequently. Individuals with hemophilia B who develop duodenal ulcers, gastritis, or another form of gastrointestinal ulcer can experience bleeding from their condition in the digestive tract. This bleeding can manifest as coffee ground vomitus because the extended duration of bleeding in the gastrointestinal membranes allows some of the blood to coagulate. This coagulated blood may be expelled in vomit.

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