A nurse is caring for a 10-month-old, weighing 8.0 kg, who was admitted for dehydration. The infant has vomited five times in the last 3 hours and has had no wet diapers in the last 8 hours. The nurse...

A nurse is caring for a 10-month-old, weighing 8.0 kg, who was admitted for dehydration. The infant has vomited five times in the last 3 hours and has had no wet diapers in the last 8 hours. The nurse informs the primary health care provider. Which of the following prescriptions should the nurse question?

1. Begin an intravenous line of D5W .45% normal saline at 40 mL/h.

2. NPO except for medication administration while vomiting persists.

3. Begin an intravenous line and administer a fluid bolus of dextrose 25%.

4. Strict intake and output; weighing all diapers.