Which statement about administering Dilantin IV is correct?

• A. IV Push Is Compatible With All IV Solutions
• B. IV Push Should Be Avoided Because It Is Dangerous
• C. IV Push Is Not Compatible With IV Solutions; Flush–Push–Flush
• D. Dilantin May Be Given By IV Bolus Without Flushing

Answer: (C)

Phenytoin (Dilantin) must be given with careful attention to IV compatibility and line care. It is not compatible with many IV solutions, especially dextrose-containing fluids, and can precipitate if mixed in the same line or given too quickly. The safest approach is to use normal saline as the IV diluent and administer the drug with a saline flush before and after the dose—often described as flush–push–flush. This technique helps keep the line patent and minimizes precipitation and irritation in the vein. In practice, administer phenytoin slowly (not as a rapid bolus) and monitor for hypotension or arrhythmias, using a dedicated IV line if possible.