The nurse can use the technique of using an enzyme-based tube clearing agent to unclog the client's feeding tube. This technique is based on evidence-based practice principles and has been found to be effective in clearing clogged feeding tubes. The enzyme-based agents work by breaking down the clog or blockage, making it easier to flush out the tube. The nurse should follow the manufacturer's instructions for use of the product, and monitor the client for any adverse reactions. If the clog cannot be cleared, the nurse should consult with the healthcare provider for further interventions.