A client in septic shock is receiving a continuous intravenous infusion of norepinephrine.… — NCLEX-RN

A client in septic shock is receiving a continuous intravenous infusion of norepinephrine. The medication is formulated as $4 \text{ mg}$ of norepinephrine in $250 \text{ mL}$ of $5\%$ dextrose in water ( $\text{D}_5\text{W}$ ) and is currently infusing via a peripheral intravenous line at $15 \text{ mL/hr}$ . The client's mean arterial pressure (MAP) drops to $52 \text{ mm Hg}$ . The healthcare provider prescribes an immediate dose titration to $8 \text{ mcg/min}$ . During the assessment, the nurse observes that the peripheral intravenous insertion site is cool, pale, and edematous. Which of the following is the priority nursing action?

A
Increase the infusion rate to $30 \text{ mL/hr}$ to deliver the prescribed $8 \text{ mcg/min}$ , and immediately establish a new peripheral intravenous access.
B
Stop the infusion, immediately remove the peripheral intravenous catheter to prevent further tissue damage, and apply a cold compress to the site.
Stop the infusion immediately, aspirate any residual medication from the catheter, leave the catheter in place, and prepare to administer phentolamine.Answer
D
Maintain the infusion at $15 \text{ mL/hr}$ because it is already delivering the prescribed $8 \text{ mcg/min}$ , and notify the healthcare provider of the suspected infiltration.

Answer

Stop the infusion immediately, aspirate any residual medication from the catheter, leave the catheter in place, and prepare to administer phentolamine.

Norepinephrine is a potent vesicant that causes severe tissue necrosis if extravasation occurs. The absolute priority is to immediately stop the infusion to prevent further tissue damage. The catheter must be left in place so the nurse can aspirate any residual medication from the line and inject the specific antidote, phentolamine (an alpha-blocker), directly into the extravasated tissue to induce vasodilation and restore perfusion. Only after the antidote is administered should the catheter be removed.

Step-by-Step Solution

Evaluate the intravenous site assessment findings against the infusing medication.

The site is cool, pale, and edematous, indicating extravasation of norepinephrine.

Norepinephrine is a potent alpha-adrenergic agonist (vesicant) that causes severe localized vasoconstriction and tissue necrosis if it leaks into subcutaneous tissues.

Determine the priority intervention considering the conflicting clinical demands (low MAP vs. extravasation).

The infusion must be stopped immediately despite the critical MAP of 52 mm Hg.

Continuing the infusion will not effectively raise the systemic blood pressure since the drug is pooling in the tissue, and it will guarantee catastrophic localized tissue loss.

Calculate the current and ordered dosage to evaluate distracting clinical options.

Concentration is

4000 \text{ mcg} / 250 \text{ mL} = 16 \text{ mcg/mL}

. Current rate of

15 \text{ mL/hr}

delivers

240 \text{ mcg/hr}

4 \text{ mcg/min}

. The ordered

8 \text{ mcg/min}

requires

30 \text{ mL/hr}

Accurate dose calculation proves that options leaving the rate at 15 mL/hr are mathematically incorrect in addition to being clinically unsafe.

Formulate the correct sequence for vesicant extravasation management.

Stop the pump, aspirate residual drug, leave the catheter intact, and administer phentolamine.

The existing catheter provides direct access to the extravasated tissue bed to administer the antidote (phentolamine, an alpha-adrenergic antagonist), which restores local perfusion.

Key Concept

Vesicant Extravasation Management and Dosage Calculation

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