Watch this video to learn about different terminologies related to GI bleeding, how to take a relevant history and examination, various aetiologies of upper (UGIB) and lower GI bleeding (LGIB) according to different locations, diagnostic evaluation modalities, how to differentiate between upper and lower GI bleed and diagnostic algorithm. Timeline: 0:00 – Introduction 0:15 – Overview of terminologies 1:15 – Aetiologies of upper and lower GI bleed 5:52 – History and examination 8:24 – Key labs and other diagnostic tests (gastric lavage, EGD, colonoscopy) 11:36 – Upper vs lower GI bleed. 13:15 – Diagnostic algorithm (UGIB and LGIB) 17:34 – Key points