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Difficulty: HardPharmacological and Parenteral Therapies

A client diagnosed with an acute pulmonary embolism is receiving a continuous intravenous infusion of unfractionated heparin via a single peripheral catheter. The healthcare provider prescribes a scheduled dose of intravenous vancomycin to treat a concurrent soft tissue infection. A review of the medication reference guide indicates that heparin and vancomycin are physically incompatible. What is the most appropriate nursing action?

  1. A
    Attach the vancomycin to the Y-site port closest to the client's insertion site.
  2. Establish a separate peripheral intravenous catheter to administer the vancomycin.Answer
  3. C
    Calculate a rapid infusion rate to administer the vancomycin over 15 minutes to minimize heparin interruption.
  4. D
    Insert an inline 0.22-micron0.22\text{-micron} filter into the primary tubing and infuse both medications concurrently.

Answer

Establish a separate peripheral intravenous catheter to administer the vancomycin.
Unfractionated heparin is a high-alert medication used to maintain vital anticoagulation in an acute pulmonary embolism. Interrupting this continuous infusion for the 60 to 90 minutes required to safely administer vancomycin could cause life-threatening thrombus extension. Because the medications are physically incompatible and cannot be mixed in the same line without forming a dangerous precipitate, the nurse must establish a second intravenous access site to administer the vancomycin safely while maintaining the continuous heparin therapy.

Step-by-Step Solution

1
Identify the primary clinical need.
The client requires continuous anticoagulation with heparin for a life-threatening pulmonary embolism.
Interrupting the heparin infusion for a prolonged period increases the risk of thrombus extension.
2
Identify the medication conflict.
Heparin and vancomycin are physically incompatible and cannot be mixed in the same line.
Mixing them will cause precipitate formation in the intravenous tubing.
3
Evaluate the administration constraints of the secondary medication.
Vancomycin must be infused slowly over at least 60 to 90 minutes.
Rapid infusion of vancomycin causes a severe histamine-mediated hypotensive reaction known as Red Man syndrome.
4
Determine the safest intervention based on the constraints.
Establish a second independent intravenous access site.
This allows both the critical continuous heparin infusion and the prolonged vancomycin infusion to run concurrently and safely without mixing.

Key Concept

Management of physically incompatible intravenous medications in clients requiring continuous high-alert infusions.
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Topics

Pharmacological and Parenteral Therapies

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