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[Comment] Transfusion after acute upper gastrointestinal haemorrhage

In The Lancet, Vipul Jairath and colleagues1 report on a feasibility trial of restrictive versus liberal blood transfusion in acute upper gastrointestinal haemorrhage. Six UK hospitals were randomly assigned to either a restrictive (transfusion when haemoglobin concentration fell below 80 g/L; 403 patients enrolled) or liberal (transfusion when haemoglobin concentration fell below 100 g/L; 533 patients enrolled) red blood cell transfusion policy for patients with acute upper gastrointestinal bleeding.