Which flushing strategy is recommended to maintain tube patency during continuous feeding?

• A. Flush with 30 mL of water every 2 hours
• B. Flush with 30 mL of water every 4 hours
• C. Flush with 50 mL every 6 hours
• D. No flush during continuous feeding

Answer: (B)

Maintaining tube patency during continuous feeding relies on regular flushing to clear residual formula from the lumen and prevent clogging. The best approach is to flush with 30 mL of water every 4 hours. This provides a consistent, adequate clearance with a reasonable fluid balance and fits typical nursing workflows for continuous feeds.

Flushing more often, such as every 2 hours, uses more water without a proven extra benefit for patency. Flushing less often, like 50 mL every 6 hours, leaves more time for residue to accumulate and increases the risk of occlusion. Not flushing at all would markedly raise the chance of clogging and interrupt nutrition delivery.