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Difficulty: Very hardPharmacological and Parenteral Therapies

A client with severe acute pancreatitis is receiving total parenteral nutrition (TPN) and a separate intravenous lipid emulsion via a multi-lumen peripherally inserted central catheter (PICC). Which nursing actions are required for the safe administration and monitoring of these parenteral therapies? (Select all that apply.)

  1. Dedicate a single lumen of the central venous catheter exclusively for the TPN infusion.Answer
  2. B
    Change the TPN infusion tubing, inline filter, and solution bag every 7272 hours.
  3. Connect the intravenous lipid emulsion tubing below the 0.220.22-micron TPN inline filter.Answer
  4. D
    Administer prescribed intravenous pantoprazole by piggybacking it into the dedicated TPN lumen.
  5. Assess the client for sudden fever and coagulation abnormalities indicating fat overload syndrome.Answer
  6. F
    Abruptly discontinue the TPN infusion if the client's blood glucose exceeds 250 mg/dL250\text{ mg/dL} (13.9 mmol/L13.9\text{ mmol/L}).

Answer

The correct actions involve dedicating a single lumen exclusively for TPN, connecting the lipid emulsion below the standard inline filter, and assessing the client for fat overload syndrome.
Safe parenteral nutrition administration demands strict adherence to physical compatibility and infection control protocols. A dedicated central lumen is mandatory to prevent chemical incompatibilities that cause life-threatening precipitates. Because lipid particles are physically larger than the pores in a standard 0.220.22-micron TPN filter, the lipid emulsion must be attached below the filter to prevent mechanical occlusion. Furthermore, expert nursing care involves continuously monitoring for rare but severe physiological reactions to parenteral lipids, such as fat overload syndrome, which presents with fever, coagulopathy, and hepatosplenomegaly.

Step-by-Step Solution

1
Evaluate the requirement for central line dedication.
Identify that TPN requires an absolutely dedicated lumen.
TPN is a hypertonic, high-glucose solution that is highly susceptible to precipitation when mixed with other intravenous drugs. Piggybacking medications into this line compromises patient safety.
2
Analyze the physical properties of lipid emulsions relative to standard TPN filters.
Determine that the lipid emulsion must bypass the standard 0.220.22-micron filter used for the amino acid/dextrose solution.
Lipid droplets have a larger particle size than the filter pores. Pushing them through a standard bacterial filter will occlude the filter and destabilize the emulsion. They must connect at a Y-site closer to the patient, below the filter.
3
Identify potential adverse systemic effects of intravenous lipid administration.
Recognize the signs of fat overload syndrome.
While rare, lipid emulsions can cause fat overload syndrome, requiring the nurse to monitor for acute signs like fever, hyperlipidemia, and coagulopathy.
4
Determine the correct infection control protocols and complication management for TPN.
Recognize that tubing must be changed every 2424 hours and that TPN should never be stopped abruptly for hyperglycemia.
Standard 7272-hour IV tubing changes do not apply to high-glucose nutrient solutions due to rapid bacterial proliferation. Abrupt cessation causes profound reactive hypoglycemia.

Key Concept

Advanced management of Total Parenteral Nutrition (TPN) and intravenous lipids, focusing on mechanical administration safety and physiologic complication monitoring.
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Topics

Pharmacological and Parenteral Therapies

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