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tric intubation include decompression of the GI tract in patients with bowel obstruction and gastric emptying in intubated patients to prevent aspiration. NG tubes may be placed as an adjunct for the delivery of oral agents, such as activated charcoal or oral radiographic contrast medium. NG tubes are often placed in patients with suspected upper GI hemorrhage. However, the sensitivity and negative predictive value of nasogastric aspirates for detecting active bleeding is suboptimal, and the absence of bloody return cannot be relied upon to rule out hemorrhage. Nonetheless, nasogastric intubation may be useful in selected patients. Evacuation . . . .