A charge nurse is observing a newly licensed nurse perform suctioning for a client who has a tracheostomy. For which of the following actions by the newly licensed nurse should the charge nurse intervene?

A. Applying suction only during catheter removal is correct because continuous suction while inserting the catheter can cause tissue trauma and hypoxia. Intermittent suctioning during withdrawal prevents damage to the tracheal mucosa. B. Suctioning for 30 seconds exceeds the recommended time limit, which is typically 10–15 seconds per pass for adults. Prolonged suctioning can cause hypoxia, bradycardia, and tissue trauma, making it unsafe for the client. C. Preoxygenating with 100% oxygen before suctioning helps prevent hypoxia during the procedure. This is a standard safety measure to maintain adequate oxygen saturation levels. D. Auscultating breath sounds before and after suctioning allows assessment of airway clearance and lung status. This step ensures that secretions have been effectively removed and helps identify any complications early.