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Zorluk: ZorPharmacological and Parenteral Therapies

A critical care nurse is managing a client with a double-lumen central venous catheter. One lumen is actively infusing continuous total parenteral nutrition (TPN). The second lumen is infusing continuous norepinephrine to maintain the client's mean arterial pressure. The provider writes a new order for an intravenous antibiotic, piperacillin-tazobactam, to be administered over 30 minutes. What is the most appropriate action by the nurse?

  1. Establish a new peripheral intravenous access site to administer the prescribed antibioticCevap
  2. B
    Piggyback the antibiotic infusion into the lowest access port of the norepinephrine line
  3. C
    Stop the total parenteral nutrition temporarily, flush the port with normal saline, and infuse the antibiotic
  4. D
    Hold the norepinephrine infusion for 30 minutes to allow the antibiotic to infuse through the second lumen

Cevap

Establish a new peripheral intravenous access site to administer the prescribed antibiotic.
The most appropriate action is to establish a new peripheral intravenous site. Total parenteral nutrition (TPN) requires a strictly dedicated line due to its high glucose content and risk of precipitation, meaning it cannot be shared or paused for other medications. Additionally, norepinephrine is a life-sustaining vasoactive drip; connecting a secondary infusion to this line alters flow dynamics and can inadvertently deliver a dangerous bolus of the vasopressor to the client. Stopping the vasopressor is also contraindicated due to the immediate risk of cardiovascular collapse. Therefore, obtaining alternative IV access is mandatory.

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1
Evaluate the current use of the central venous catheter lumens.
One lumen is dedicated to TPN, and the other is dedicated to a continuous vasopressor (norepinephrine).
Identifying the current infusions is necessary to determine if a compatible and safe port is available for a new medication.
2
Analyze the safety guidelines for TPN administration.
TPN requires a strictly dedicated intravenous line.
Accessing a TPN line for other medications increases the risk of severe central line-associated bloodstream infections (CLABSI) and drug-nutrient precipitation.
3
Analyze the safety guidelines for continuous vasoactive infusions.
Norepinephrine cannot be paused, and secondary infusions should not be piggybacked into its line.
Altering the flow rate of the carrier fluid in a vasopressor line can cause a sudden, life-threatening bolus of the medication or a dangerous drop in blood pressure.
4
Determine the safest method for antibiotic administration.
A new peripheral IV must be started.
Since both existing central lumens are occupied by critical, dedicated infusions that cannot be safely shared or interrupted, alternative access is mandatory.

Anahtar Kavram

Safe administration of parenteral therapies requires maintaining dedicated lines for TPN and avoiding the interruption or flow alteration of continuous life-sustaining vasopressors.
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Pharmacological and Parenteral Therapies

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