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Difficulty: HardPharmacological and Parenteral Therapies

A client with severe acute pancreatitis is receiving continuous total parenteral nutrition (TPN) through a single-lumen peripherally inserted central catheter (PICC). During the shift, the client develops a temperature of 101.4°F (38.6°C) and a white blood cell count of 16,000/mm³. The healthcare provider prescribes intermittent intravenous (IV) ciprofloxacin every 12 hours. Which nursing action ensures the safe administration of the prescribed antibiotic?

  1. Establish a separate peripheral intravenous catheter to administer the ciprofloxacin.Answer
  2. B
    Pause the TPN, flush the PICC with 10 mL of 0.9% sodium chloride, infuse the ciprofloxacin, and flush again.
  3. C
    Attach the ciprofloxacin secondary tubing to the primary Y-site on the TPN administration set.
  4. D
    Temporarily halt the TPN infusion to administer the ciprofloxacin and subsequently increase the TPN rate to replace the missed volume.

Answer

The nurse must establish a separate peripheral intravenous catheter to administer the antibiotic.
Total parenteral nutrition (TPN) solutions contain complex mixtures of dextrose, amino acids, and often lipids that are highly prone to chemical precipitation when mixed with other medications. Additionally, the high dextrose content makes the TPN line a prime site for bacterial growth. Evidence-based guidelines mandate that a single-lumen central venous catheter used for TPN must be dedicated exclusively to the TPN infusion. Administering any other medication through this lumen compromises the integrity of the line, increases the risk of central line-associated bloodstream infections (CLABSI), and risks physical incompatibility. Therefore, the nurse must establish a separate peripheral IV access to safely administer the antibiotic.

Step-by-Step Solution

1
Analyze the client's current intravenous access and the new medication order.
The client has a single-lumen PICC that is actively being used for a continuous TPN infusion, and requires a new intermittent IV antibiotic.
Identifying the specific type of IV access and the nature of the continuous infusion is required to determine medication compatibility and safe administration routes.
2
Evaluate the principles of TPN administration and central line management.
Evidence-based practice mandates that TPN requires a strictly dedicated line due to its complex chemical composition, high osmolarity, and significant risk for microbial growth.
Understanding that TPN lines cannot be shared or repeatedly accessed prevents potentially fatal complications like chemical precipitation or central line-associated bloodstream infections (CLABSI).
3
Determine the safest method to administer the newly prescribed ciprofloxacin.
Because the only existing central access is a single lumen dedicated to TPN, the nurse must establish a new peripheral IV site.
Creating a separate access point ensures the antibiotic is delivered safely without disrupting or contaminating the life-sustaining TPN therapy.

Key Concept

Total Parenteral Nutrition (TPN) requires a strictly dedicated intravenous line. No other medications, fluids, or blood products should be administered through a single-lumen catheter actively infusing TPN.
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Topics

Pharmacological and Parenteral Therapies

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