A nurse is teaching a client who is to begin chemotherapy about a peripherally inserted central catheter (PICC). Which of the following statements should the nurse include in the teaching?

A. "We will replace the PICC every month." is incorrect. PICC lines are designed for long-term use, often weeks to months, but they are not routinely replaced every month. They are replaced only if complications occur, such as infection, occlusion, or damage. B. "We will change the dressing daily." is incorrect. PICC dressings are typically changed every 7 days (for transparent dressings) or sooner if the dressing becomes wet, soiled, or loose. Daily changes are unnecessary and can increase infection risk or damage the catheter site. C. "We can draw blood samples from the PICC for diagnostic tests." is correct. PICC lines provide central venous access, which allows for safe blood draws and administration of medications, including chemotherapy. Using the PICC for blood sampling reduces the need for repeated peripheral venipunctures, minimizing discomfort and preserving peripheral veins. D. "We can measure your blood pressure in either arm." is incorrect. Blood pressure should not be taken on the arm with the PICC, as cuff inflation can damage the catheter or increase the risk of thrombosis or infection. BP should be measured in the opposite arm to protect catheter integrity.