A client undergoing treatment for gastrointestinal toxicity is receiving total parenteral nutrition (TPN) through a single-lumen peripherally inserted central catheter. The client experiences a sudden onset of severe nausea, and the acute care team prescribes an immediate dose of intravenous ondansetron. Which action represents the safest medication administration practice for this client?
- AInterrupt the nutritional fluid momentarily, flush the lumen with sterile saline, and administer the dose.
- BInject the antiemetic directly into the lowest port of the existing infusion set.
- Obtain an alternative peripheral venous access site to deliver the prescribed antiemetic.Answer
- DReduce the infusion pump rate by half while pushing the medication to minimize interaction risk.
Answer
Obtain an alternative peripheral venous access site to deliver the prescribed antiemetic.
Total parenteral nutrition (TPN) formulas are highly complex and prone to chemical precipitation when mixed with other pharmacological agents. Standard nursing practice dictates that TPN must run through a strictly dedicated intravenous line. Because the client only has a single-lumen central catheter, the nurse cannot safely use this line for any other infusions or IV push medications. Therefore, establishing a separate peripheral venous access site is the only safe method to administer the prescribed antiemetic without risking line occlusion, bloodstream infection, or glycemic instability.
Step-by-Step Solution
Key Concept
Total parenteral nutrition (TPN) requires a dedicated intravenous line. Medications should never be mixed with TPN or administered in the same lumen due to high risks of incompatibility, precipitation, and infection.