Final answer:
After a radical neck dissection, the nurse should drain blood from the internal jugular and subclavian veins and monitor the client's vital signs.
Step-by-step explanation:
After a radical neck dissection, if the client's drainage system has obtained 40 ml of medium-red, bloody fluid in the first 2.5 hours, the nurse should take the following actions:
- Drain blood from the right and left internal jugular veins.
- Drain blood from the right and left subclavian veins.
- Monitor the client's vital signs, such as blood pressure, heart rate, and oxygen saturation.
If the client is experiencing excessive bleeding or shows signs of hypovolemia, it is important for the nurse to address this immediately by providing appropriate blood products and fluids.