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Difficulty: HardPharmacological and Parenteral Therapies

An older adult client is admitted to the cardiac intensive care unit with cardiogenic shock and pulmonary edema. The client has a single-lumen peripheral venous catheter continuously infusing dobutamine. Assessment reveals a blood pressure of 82/48 mm Hg, severe orthopnea, and coarse crackles throughout both lung fields. The provider orders an immediate intravenous push of bumetanide. Drug reference materials indicate bumetanide is physically incompatible with dobutamine. Which action demonstrates the safest administration technique?

  1. Establish a new, separate peripheral intravenous catheter to administer the bumetanide.Answer
  2. B
    Stop the dobutamine infusion temporarily, flush the line with normal saline, push the bumetanide, flush again, and restart the dobutamine.
  3. C
    Connect the bumetanide to the lowest Y-site port on the primary tubing for simultaneous administration.
  4. D
    Contact the healthcare provider to request converting the bumetanide to an oral formulation.

Answer

Establish a new, separate peripheral intravenous catheter to administer the bumetanide.
Securing a separate intravenous access site is the only safe intervention. Dobutamine is a critical inotropic medication with a short half-life used to maintain cardiac output and blood pressure in cardiogenic shock. Interrupting this infusion, even briefly to administer another drug, can precipitate rapid hemodynamic collapse. Furthermore, because bumetanide and dobutamine are incompatible, they cannot share the same line simultaneously.

Step-by-Step Solution

1
Analyze the client's current hemodynamic status and medication profile.
The client is in cardiogenic shock (BP 82/48 mm Hg) and is dependent on a continuous dobutamine infusion for cardiovascular support.
Understanding the critical nature of the continuous infusion establishes that it cannot be safely interrupted, even for a few minutes.
2
Evaluate the compatibility of the prescribed medications.
Dobutamine and bumetanide are physically incompatible in the same intravenous line.
Mixing incompatible medications causes precipitation, which can lead to catheter occlusion or an embolic event.
3
Determine the safest method of administration that resolves the conflict.
Because the dobutamine cannot be stopped and the medications cannot be mixed, the nurse must establish a secondary venous access site.
This guarantees the client receives the emergency diuretic without compromising life-sustaining inotropic support or risking intravenous precipitation.

Key Concept

Management of Incompatible Vasoactive Intravenous Infusions
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Topics

Pharmacological and Parenteral Therapies

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