Final answer:
The action of clamping the chest tube while a patient is ambulating after a partial lobectomy requires mentor intervention to prevent complications like tension pneumothorax. Other actions such as semi-Fowler's position, increased fluid intake, and pain management before activity are appropriate post-operative care.
Step-by-step explanation:
The subject of the question is the appropriate care for a patient with a chest tube after a partial lobectomy. In this scenario, the new graduate nurse's action that would require the mentor to intervene is C. Clamps the chest tube while the patient is ambulating. It is important to maintain chest tube patency to prevent complications such as tension pneumothorax. The other actions mentioned, such as positioning the patient in the semi-Fowler's position, encouraging fluid intake, and administering prescribed narcotic analgesics before activity, are typically appropriate in the care of a patient post-partial lobectomy. The semi-Fowler's position can help with breathing and lung expansion, increased fluid intake can prevent dehydration and help thin secretions, and pain management is crucial for patient comfort and cooperation with deep breathing and ambulation exercises.