After gastric residual volume (GRV) assessment, which action is recommended to maintain patency?

• A. Flush with 30 mL water
• B. Flush with 60 mL water
• C. Hold feeding
• D. Instill air

Answer: (A)

After measuring gastric residual volume, the tube should be flushed with a small amount of water to keep it patent. Using about 30 mL of water clears residual contents and helps prevent clogging, allowing the feeding to continue smoothly. A larger flush, like 60 mL, isn’t routinely necessary and can add unnecessary fluid. Holding the feeding isn’t needed solely for patency, and instilling air into the tube has no proven benefit and can introduce risks. The 30 mL water flush is the standard way to maintain tube patency after GRV assessment.