A client complains of a severe, throbbing headache following a lumbar puncture. The priority nursing intervention for this client is to（）
A. restrict fluid intake.
B. increase fluid intake.
C. raise the head of the bed.
D. assess vital signs.
参考答案：B
解析：
The nurse should encourage the client to increase her fluid intake to approximately 3 qt (3 L)/day for 24 to 48 hours. The headache is most likely due to decreased cerebrospinal fluid (CSF) circulating around the cranium. This fluid loss allows the brain to move abnormally within the skull. The movement causes tension on the meninges and venous sinuses, causing pain. Extra oral fluid intake will increase CSF production. Lying flat may decrease pain, and raising the head of the bed may worsen the headache.