The оrder is lоrаzepаm (Ativаn) 4 mg IV push every 10 minutes PRN fоr severe agitation, maximum 12 mg in 1 hour. The vial is labeled 2 mg/mL.The nurse plans to dilute each dose with 2 mL of normal saline before administration.What is the total volume in mL per dose after dilution , and what is the maximum volume the patient could receive in 1 hour