A pregnant woman has been receiving a magnesium sulfate infusion for treatment of severe preeclampsia for 24 hours. On assessment, the nurse finds the following vital signs: temperature of 37.3° C, pulse rate of 88 beats/min, respiratory rate of 10 breaths/min, blood pressure of 148/90 mm Hg, absent deep tendon reflexes, and no ankle clonus. The client complains, "I'm so thirsty and warm.”. The nurse: