The nurse is providing care for an immobilized client. For this client, the most appropriate and most effective nursing intervention would be （）.
A．getting the client out of bed and into a chair for 30 minutes, twice daily.
B．avoiding repositioning the client if he's comfortable.
C．repositioning the client on alternate sides at least every 2 hours.
D．positioning the client with the greatest pressure at the bony prominence.
参考答案：C
解析：
Changing the client's position frequently allows for increased circulation and helps to prevent skin breakdown. The immobilized client receives minimal benefit from sitting upright in a chair for 30 minutes, twice daily. The client shouldn't be left in one position for longer than 2 hours. The greatest pressure shouldn't be placed on bony prominences because these areas can break down from increased pressure.