Coffee ground vomitus refers to a particular appearance of vomit. Within organic heme molecules of red blood cells is the element iron, and when this iron has been exposed for some time to gastric acid, it becomes oxidized. This reaction causes the vomitus to look like ground coffee. Coffee-ground vomitus is a classic sign of upper gastro-intestinal bleeding. A peptic ulcer, for example, may bleed into the stomach and produce coffee-ground vomitus. There are many causes that can result in this reaction, with use of NSAIDs and SSRIs being particularly common.
These drugs can interfere with the stomach's natural defenses against the strongly acidic environment, causing damage to the mucosa that can result in bleeding. Therefore it is recommended that these class of drugs should be taken with food or on a full stomach. Certain types of illnesses, however, can cause this type of vomiting, and in these cases medical attention is required immediately.
When bright red blood is vomited, it is termed hematemesis. Hematemesis, in contrast to coffee ground vomitus, suggests that upper gastrointestinal bleeding is more acute or more severe, or originates more proximally than the stomach. This condition may be a medical emergency and urgent care may be required. Oxidized blood from an upper gastrointestinal bleed can also be excreted in stool. It produces blackened, "tarry" stools known as melæna.
See also Upper gastrointestinal bleed Hematemesis more likely due a large volume, not Mallory-Weiss tears. Large volume comes from esophageal varicies more likely than esophageal tears. Melana, especially dark black stool more likely from a slow upper GI bleeder like ulcer or esophageal tear. References Coffee Ground Vomitus. :www.healthline.comcoffee-ground-vomitus.
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