The nurse is caring for a 4-month-old infant in the emergency department. The nurse reviews the infant's medical record and assessment findings. Which of the following conditions should the nurse suspect, and what actions should the nurse take to address that condition, and what parameters should the nurse monitor to assess the infant's progress?

The nurse should suspect that the infant has

Choice A reason: Insulin therapy and fluid replacement are the main treatments for DKA, as they lower the blood glucose level and correct the dehydration and electrolyte imbalance caused by osmotic diuresis and acidosis.

Choice B reason: Glucagon injection and potassium supplements are not indicated for DKA, as they may worsen the hyperglycemia and the hyperkalemia. Glucagon stimulates the liver to release more glucose into the bloodstream, while potassium supplements may increase the risk of cardiac arrhythmias.

Choice C reason: Bicarbonate infusion and sodium restriction are not the first-line treatments for DKA, as they may have adverse effects on the acid-base balance and the fluid status. Bicarbonate infusion may cause paradoxical cerebral acidosis and hypokalemia, while sodium restriction may exacerbate the hyponatremia and the hypovolemia.

Choice D reason: Dextrose infusion and diuretics are contraindicated for DKA, as they may increase the blood glucose level and the dehydration. Dextrose infusion may trigger a rebound hyperglycemia, while diuretics may cause further fluid and electrolyte loss.

Choice A reason: Bacterial meningitis is an inflammation of the meninges, the membranes that cover the brain and spinal cord, caused by a bacterial infection. It can cause fever, headache, neck stiffness, photophobia, and altered mental status. The cerebrospinal fluid (CSF) analysis may show increased white blood cells, protein, and glucose. The nurse should assess the neck range of motion and the reaction to pupil assessment, as these may indicate increased intracranial pressure.

Choice B reason: Encephalitis is an inflammation of the brain tissue, usually caused by a viral infection. It can cause fever, headache, confusion, seizures, and focal neurological deficits. The CSF analysis may show increased white blood cells and protein, but normal glucose. The nurse should assess the level of consciousness and the neurological status, as these may indicate brain damage.

Choice C reason: Gastroenteritis is an inflammation of the stomach and intestines, usually caused by a viral or bacterial infection. It can cause nausea, vomiting, diarrhea, abdominal pain, and dehydration. The nurse should assess the gastrointestinal manifestations and the vital signs, as these may indicate fluid and electrolyte imbalance.

Choice D reason: Migraine is a type of headache that involves recurrent episodes of moderate to severe pain, usually on one side of the head, often accompanied by nausea, vomiting, and sensitivity to light and sound. The nurse should assess the location and duration of pain, the triggers and relievers, and the history of migraine. The CSF analysis is usually normal.