When Administering Phenytoin (Dilantin) Through the Patient's IV Line, the Nurse

question 3

Multiple Choice

When administering phenytoin (Dilantin) through the patient's IV line, the nurse carefully flushes the IV with normal saline before and afterward to avoid crystal formation of the medication that occurs when it mixes with dextrose in water (D₅W) solution. Which type of drug interaction is the nurse being careful to avoid?

• A) Antagonism
• B) Potentiation
• C) Synergism
• D) Incompatibility

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