A nurse is preparing to bathe a confused elderly patient. What is the best approach?

1. Inject air and listen over the stomach as the only method to confirm tube placement
2. Elevate the head of bed to at least 30-45°, verify tube placement, check residual volume
3. Administer the feeding with the patient lying completely flat in bed
4. Give the full feeding even when the gastric residual volume is high

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