Determining the Source of GI Blood Loss
Mayo Clinic Talks
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What Questions Should We Ask When Seeing Patients With GI Blood Loss?
In more than 90% of cases with vomiting of blood or coffee grounds, there's going to be a lesion that's proximal to the ligament of trites at the junction between the third and fourth portion of the duodenum. Non-strotal anti-inflammatories are a leading cause of GI blood loss. Seeing fresh red blood from below, again, not a guarantee that this is a colonic source.
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