A nurse is planning care for a 5-month-old infant who is scheduled for a lumbar puncture to rule out meningitis. Which of the following actions is the MOST important for the nurse to include in the plan of care?

Keep the infant NPO for 6 hours prior the procedure

Prepare to insert Foley catheter for urine collection

Hold the infant's chin to his chest and knees to his abdomen during the procedure.

Place the infant in an infant seat for 2 hours following the procedure.