A nurse is caring for a client who reports a throbbing headache after a lumbar puncture. Which of the following actions is most likely to facilitate resolution of the headache?

Choice A rationale Post-lumbar puncture headache is often caused by a leakage of cerebrospinal fluid (CSF) through the puncture site, leading to a decrease in intracranial pressure. Increasing fluid intake, particularly oral fluids, helps to increase the overall fluid volume in the body, which can promote CSF production and help replenish the lost fluid, thereby raising intracranial pressure and alleviating the headache. Choice B rationale While administering pain medication can provide symptomatic relief for the headache, it does not address the underlying physiological cause of the headache, which is typically CSF leakage and decreased intracranial pressure. Therefore, it is a supportive measure but not the primary action to facilitate resolution of the headache. Choice C rationale Darkening the client's room and closing the door might provide a more comfortable environment and reduce sensory stimuli that could exacerbate the headache. However, this action does not directly address the physiological cause of the post-lumbar puncture headache, which is the alteration in cerebrospinal fluid volume and pressure. Choice D rationale Elevating the head of the bed to 30° would actually be counterproductive. In cases of post-lumbar puncture headache, the goal is to increase intracranial pressure. Elevating the head of the bed would tend to *decrease* intracranial pressure further, potentially worsening the headache rather than facilitating its resolution. Lying flat is often recommended.