Lower GI bleeding, defined as hematochezia or bright red blood passed per rectum due to colorectal pathology, accounts for one-fifth of all cases of GI hemorrhage among patients requiring hospital admission.1
This guideline highlights changes since the 2016 ACG LGIB guideline. Guideline participants were gastroenterologists selected by the ACG, with no radiologists or intensivists represented. Questions relevant to the management of LGIB were explored with systematic literature searches,2 and randomized clinical trials and meta-analyses were preferred. The literature review yielded 87 studies that informed the guidelines. Potential conflicts of interest were stated in the final manuscript (Table).3