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What is What is least useful as diagnostic procedure in case of acute haemetemesis and explain in detail?
C i.e. Gastric content aspiration - Patient is already having frank haematemesis (upper GI bleed coming through mouth). So there is no diagnostic role of gastric aspiration. It may be of some value, when there is doubt of upper GI bleed. Endoscopy is the investigation of choice for upper GI bleedQ. Endoscopy is helpful in dx of Oesophagitis, gastritis, ulcer, reflux, carcinoma, varicose veins. Barium meal is helpful in diagnosing ulcer & gastritis. Angiography tells about bleeding vessel.