In which scenarios should you avoid dextrose-containing IV solutions with certain medications?

• A. Dextrose-containing solutions should always be avoided with any medication.
• B. If a medication is unstable or precipitates in dextrose, or if the patient has risk of hyperglycemia; use saline as diluent per order.
• C. Dextrose is never compatible with any medication.
• D. Use fatty emulsions to dilute.

Answer: (B)

Choosing the IV diluent depends on how the drug will behave in the solution and on the patient’s glucose needs. Dextrose-containing IV fluids introduce glucose, which can interact with some medications or push blood sugar up in patients at risk for hyperglycemia. For meds that are unstable in dextrose or tend to precipitate or degrade when glucose is present, using saline as the diluent is preferred, and this should be done per the order.

In contrast, many drugs are perfectly compatible with dextrose, so it isn’t an automatic rule to avoid dextrose for every medication. The idea isn’t to use saline for everything, but to tailor the diluent to the drug’s stability and the patient’s metabolic risk. Fatty emulsions aren’t a general diluent option for most medications.