A woman with preeclampsia has a seizure. What is the nurse's highest priority during a seizure?

Choice A reason: Polyuria is not an expected finding in a client with severe preeclampsia, as it can indicate dehydration, diabetes, or renal impairment. A client with severe preeclampsia may have oliguria, which is a urine output of less than 500 mL in 24 hours, due to the decreased renal perfusion and function.

Choice B reason: Report of headache is an expected finding in a client with severe preeclampsia, as it can indicate increased intracranial pressure, cerebral edema, or vasospasm. A client with severe preeclampsia may also have other neurological symptoms, such as blurred vision, scotoma, photophobia, or hyperreflexia.

Choice C reason: Tachycardia is not an expected finding in a client with severe preeclampsia, as it can indicate dehydration, infection, anxiety, or fetal distress. A client with severe preeclampsia may have bradycardia, which is a heart rate of less than 60 beats per minute, due to the increased vagal tone and blood pressure.

Choice D reason: Absence of clonus is not an expected finding in a client with severe preeclampsia, as it can indicate normal or decreased neuromuscular irritability. A client with severe preeclampsia may have positive clonus, which is a rhythmic jerking of the foot when the ankle is dorsiflexed, due to the increased reflex excitability and hyperactivity.

Choice A reason: Respiratory rate is the priority nursing assessment for this client, because magnesium sulfate can cause respiratory depression, which is a life-threatening complication. The nurse should monitor the client's respiratory rate closely, and discontinue the infusion if it falls below 12 breaths per minute.

Choice B reason: Bowel sounds is not a priority nursing assessment for this client, because magnesium sulfate does not have a significant effect on the gastrointestinal system. The nurse should assess the client's bowel sounds as part of the routine physical examination, but it is not a critical parameter for this medication.

Choice C reason: Time of last food intake is not a priority nursing assessment for this client, because magnesium sulfate does not interact with food or affect the absorption of nutrients. The nurse should inquire about the client's dietary intake and preferences, but it is not a vital factor for this medication.

Choice D reason: Temperature is not a priority nursing assessment for this client, because magnesium sulfate does not cause fever or hypothermia. The nurse should measure the client's temperature as part of the vital signs, but it is not a key indicator for this medication.