The researchers will investigate whether erythromycin infusion is better than gastric lavage prior to emergency endoscopy to improve the quality of examination in patients with upper gastrointestinal bleeding.
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Visual quality of endoscopy
Timeframe: The endoscopy will be recorded and subsequently it will be evaluated by two endoscopists unaware of the cleaning strategy. The recording's evaluation will be made within the first 30 days after endoscopy