Examkin

Question

Difficulty: MediumPharmacological and Parenteral Therapies

The nursing unit receives a client who is being treated for a pulmonary embolism with a continuous intravenous (IV) heparin infusion. The attending provider adds a prescription for intermittent IV vancomycin due to a newly suspected wound infection. During the medication preparation phase, the nurse checks a compatibility chart and identifies that heparin and vancomycin form a precipitate when mixed at the Y-site. The client has only one functioning peripheral venous access catheter.

Which action represents the safest nursing intervention?

  1. Initiate a second peripheral IV access site to administer the vancomycin independently.Answer
  2. B
    Pause the heparin infusion, flush the IV line with 0.9%0.9\% sodium chloride, administer the vancomycin, and flush again.
  3. C
    Attach the vancomycin secondary tubing to the primary IV line at the Y-site port located closest to the venous access.
  4. D
    Calculate a new drip rate to infuse the vancomycin rapidly over 15 minutes15\text{ minutes} to reduce the interruption of the continuous heparin.

Answer

The most appropriate action is to initiate a second peripheral IV access site to administer the vancomycin independently.
The correct response is to initiate a separate peripheral IV access site. Because heparin and vancomycin are chemically incompatible, they cannot mix in the same tubing. Additionally, heparin is a critical, high-alert medication with a short half-life used to prevent clot extension in a pulmonary embolism; interrupting its continuous infusion to administer a long-infusing medication like vancomycin would place the client at significant risk for worsening thromboembolism.

Step-by-Step Solution

1
Identify the primary pharmacological concern in the scenario.
The nurse recognizes that heparin and vancomycin are physically incompatible at the Y-site.
Administering incompatible medications through the same IV line can cause precipitation and patient harm.
2
Evaluate the clinical implications of the continuous medication.
The client is receiving heparin for a pulmonary embolism, which requires continuous therapeutic anticoagulation.
Heparin has a short half-life; prolonged interruption increases the risk of clot extension or new thromboembolism.
3
Analyze the administration requirements for the intermittent medication.
Vancomycin requires a slow infusion rate over at least 60 minutes to prevent adverse reactions.
Rapid vancomycin administration causes a dangerous histamine-mediated response known as vancomycin infusion reaction.
4
Synthesize the findings to determine the safest nursing action.
A second peripheral IV access site must be established.
This allows for the independent administration of the incompatible vancomycin without interrupting the life-saving continuous heparin infusion.

Key Concept

Safe administration of physically incompatible intravenous medications and prioritization of continuous high-alert infusions.
Rate this question

Topics

Pharmacological and Parenteral Therapies

More questions from this topic