A nurse is caring for a client who is receiving continuous feedings via NG tube. Which of the following actions should the nurse take?

Choice A reason: Irrigating the tube with 10 mL of cool water every 6 hr is incorrect. Tubes are flushed with warm water, typically before and after feedings or medication administration, not routinely every 6 hours with cool water. Cool water can cause discomfort and is not recommended. Choice B reason: Elevating the head of the bed to only 15° is insufficient to prevent aspiration. The recommended elevation is at least 30° to 45° during feedings to reduce the risk of reflux and aspiration pneumonia. Choice C reason: Replacing the feeding bag every 72 hours is unsafe. Feeding bags should be replaced every 24 hours to prevent bacterial contamination and infection. Extending use to 72 hours increases infection risk. Choice D reason: Checking gastric residual every 4 hours is the correct answer because it ensures the client is tolerating the feeding and prevents complications such as aspiration or delayed gastric emptying. Monitoring residuals helps guide feeding adjustments and promotes safety.