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Difficulty: HardPharmacological and Parenteral Therapies

During a shift assessment, the nurse reviews the electronic health record of a client being treated for a deep vein thrombosis. Unfractionated heparin is currently infusing continuously via a peripheral venous catheter. The provider has newly entered a prescription for ketorolac tromethamine 30 mg IV every 6 hours for reports of severe back pain. Which of the following is the priority nursing action?

  1. Withhold the ketorolac and contact the prescribing provider to recommend a different class of analgesic.Answer
  2. B
    Administer the ketorolac through a separate peripheral IV insertion site to prevent precipitation.
  3. C
    Verify the client's most recent activated partial thromboplastin time (aPTT) prior to administration.
  4. D
    Calculate a weight-based dosage of the ketorolac to ensure the prescribed amount is within safe limits.

Answer

Withhold the ketorolac and contact the prescribing provider to recommend a different class of analgesic.
Ketorolac is a potent nonsteroidal anti-inflammatory drug (NSAID) that strongly inhibits platelet aggregation and carries a high risk of gastrointestinal bleeding. Administering any NSAID to a client who is actively receiving a continuous infusion of an anticoagulant, such as unfractionated heparin, creates an unacceptable and severe risk for life-threatening hemorrhage. The nurse's primary responsibility is patient advocacy and safety, which requires withholding the contraindicated medication entirely and collaborating with the provider to find a safe alternative for pain management.

Step-by-Step Solution

1
Identify the therapeutic classifications and side effect profiles of the prescribed medications.
Heparin is a continuous systemic anticoagulant. Ketorolac is a potent nonsteroidal anti-inflammatory drug (NSAID) that disrupts platelet function and irritates the gastrointestinal mucosa.
Understanding drug classes is essential for identifying dangerous pharmacological interactions before administration.
2
Analyze the physiological outcome of combining these two specific medications in the client.
The combination of systemic anticoagulation (heparin) and platelet inhibition (ketorolac) exponentially increases the client's risk for life-threatening internal hemorrhage, particularly in the gastrointestinal tract.
Nurses must synthesize knowledge of pharmacodynamics to anticipate severe adverse effects.
3
Determine the priority nursing intervention based on the clinical judgment of patient safety.
The nurse must refuse to administer the contraindicated medication and immediately notify the provider to obtain a prescription for a safe alternative, such as acetaminophen or an opioid.
Patient safety and advocacy require the nurse to withhold dangerous prescriptions rather than modifying administration techniques or merely assessing labs.

Key Concept

Pharmacological contraindications and the synergistic bleeding risks associated with combining systemic anticoagulants and NSAIDs.
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Topics

Pharmacological and Parenteral Therapies

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