Assertion: lavage | /r/CapableOf | differentiate an upper
Facets:
value: to justify its routine use
type: PURPOSE
value: from lower source
type: LOCATION
Source sentences:
text: Our objective was to answer the following research question through an evidence‐based literature review: in patients with hematochezia or melena without hematemesis, does nasogastric aspiration and lavage differentiate an upper from lower source of GI bleeding sufficiently to justify its routine use?