# A patient receiving norepinephrine (Levophed) infusion for septic shock requires continuous monitoring. Which assessment finding would be the nurse's highest priority to report immediately to the healthcare provider?

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> subject: Pharmacology

## 문제

A patient receiving norepinephrine (Levophed) infusion for septic shock requires continuous monitoring. Which assessment finding would be the nurse's highest priority to report immediately to the healthcare provider?

The nurse is caring for a patient with septic shock who is receiving norepinephrine infusion at 15 mcg/min through a central venous catheter.

## 보기

1. Blanching and coolness of the fingers and toes with delayed capillary refill **✔ 정답**
2. Blood pressure increase from 85/50 mmHg to 110/70 mmHg
3. Heart rate increase from 95 bpm to 105 bpm
4. Urine output of 35 mL in the past hour

**정답: 1**

## 해설

Blanching and coolness indicate severe peripheral vasoconstriction from norepinephrine, risking tissue necrosis and requiring immediate action. Other findings (BP increase, HR increase, urine output) are expected or less critical.

## 심화 해설

Core Nursing Explanation
**Key Concept Analysis**: This question tests the critical nursing responsibility of monitoring for and recognizing life-threatening complications of high-dose vasopressor therapy. The patient is in Septic shock, a distributive shock characterized by profound vasodilation and hypotension. Norepinephrine (Levophed) is a potent alpha-1 adrenergic agonist, causing intense vasoconstriction to increase systemic vascular resistance (SVR) and blood pressure. While this is therapeutic for the shock state, it carries a significant risk of compromising blood flow to the extremities, leading to Key Point! ischemia and potential tissue necrosis.

**Answer Rationale**: Key Point! Option ①, "Blanching and coolness of the fingers and toes with delayed capillary refill," is the **highest priority** finding. This is a direct sign of excessive peripheral vasoconstriction, indicating that the medication is compromising circulation to the extremities. This is an **adverse effect**, not a therapeutic goal. If unaddressed, it can rapidly progress to gangrene and limb loss, making it an immediate safety concern that requires provider notification for possible dose adjustment or intervention (e.g., phentolamine infiltration if extravasation is suspected).

**Distractor Analysis**:

Watch out for confusion! Option ②: A blood pressure increase from 85/50 mmHg to 110/70 mmHg is the **desired therapeutic effect** of norepinephrine in septic shock. The nurse would document this improvement, not report it as a problem.

Watch out for confusion! Option ③: A heart rate increase from 95 to 105 bpm is a common, expected side effect of norepinephrine due to its beta-1 agonist activity. In the context of improving blood pressure, this mild tachycardia is not the highest priority.

Watch out for confusion! Option ④: A urine output of 35 mL/hr is actually a **positive indicator** of improved renal perfusion. The goal in shock is typically >0.5 mL/kg/hr. For an average adult, 35 mL/hr may meet or approach this goal, indicating the treatment is working.

**Related Concepts**: This scenario integrates knowledge of shock management, vasopressor pharmacology, and nursing assessment priorities (using frameworks like ABCs and "urgent vs. non-urgent"). It emphasizes that while achieving hemodynamic targets is important, preventing iatrogenic harm from the treatment itself is a core nursing duty.

Concept Summary

| Concept | Explanation |
| --- | --- |
| Septic Shock | Distributive shock from infection, causing vasodilation, capillary leak, and organ hypoperfusion. Treated with fluids, antibiotics, and vasopressors. |
| Norepinephrine (Levophed) | First-line vasopressor for septic shock. Strong alpha-1 (vasoconstriction) and mild beta-1 (inotropy, chronotropy) effects. |
| Extravasation & Ischemia | Critical complications. Extravasation (leakage into tissue) or systemic overdose can cause severe vasoconstriction leading to tissue necrosis. |
| Nursing Priority | Monitor for therapeutic effect (increased BP, improved urine output) AND for adverse effects (peripheral ischemia, arrhythmias). Safety first. |

Side-by-Side Comparison!

| Assessment Finding | Interpretation in Norepinephrine Infusion | Nursing Action Priority |
| --- | --- | --- |
| Cool, pale, mottled extremities with delayed capillary refill | Key Point! Adverse Effect: Excessive peripheral vasoconstriction, risk of ischemia/necrosis. | HIGHEST PRIORITY. Stop infusion at site, notify provider immediately, assess for extravasation. |
| Blood pressure increasing toward target (e.g., MAP ≥ 65 mmHg) | Therapeutic Effect: Desired response to medication. | Continue monitoring. Document improvement. |
| Mild tachycardia (e.g., increase of 10-20 bpm) | Expected Side Effect: Due to beta-1 agonist activity. | Monitor. Report if severe (e.g., >130 bpm) or symptomatic. |
| Improved urine output (>0.5 mL/kg/hr) | Therapeutic Effect: Indicates improved renal perfusion. | Continue monitoring. Document positive trend. |

Anatomy, Physiology & Pharmacology Points

- **Pharmacology**: Norepinephrine acts on alpha-1 adrenergic receptors on vascular smooth muscle, causing potent vasoconstriction, especially in skin, mucosa, and splanchnic (gut) circulation. It also has beta-1 adrenergic effects, increasing heart rate and contractility.

- **Physiology**: In shock, the body shunts blood away from the periphery (skin, extremities) to preserve flow to vital organs (heart, brain, kidneys). Norepinephrine pharmacologically exaggerates this response, which can become dangerous.

- **Assessment**: Capillary refill time is a quick bedside assessment of peripheral perfusion. Normal is < 2 seconds. Delayed refill (>3 seconds) indicates poor perfusion.

Memory Tips

- **Acronym: VIP for Vasopressor Issues to Prioritize**: **V**asoconstriction (peripheral ischemia), **I**nfiltration/Extravasation, **P**alpitations/Arrhythmias.

- **Think "Fingers and Toes First"**: When a patient is on a "pressor," always check the most distal points for color, warmth, and pulse. If they're cold and white, something's not right!

- **Norepinephrine = "No-Refill-ephrine"** (for the periphery). It stops blood from refilling the capillary beds in the skin.

High-Frequency NCLEX Topics
NCLEX loves to test **priority-setting** and **complication recognition**. Vasopressor administration is a classic scenario. Remember: *Life-threatening complications of treatment always trump expected therapeutic effects or minor abnormalities.* The NCLEX wants you to be a safe nurse who can identify when a "helpful" treatment starts to cause harm.

Watch Out for Question Variations!

- **Shift from Symptom to Intervention**: "The nurse notes blanching along the IV site of a norepinephrine infusion. What is the nurse's *immediate* action?" (Answer: Stop the infusion at that site).

- **Shift to Pharmacology**: "A patient experiencing severe peripheral vasoconstriction from norepinephrine extravasation should receive which antidote via subcutaneous infiltration?" (Answer: Phentolamine).

- **Shift to Patient Education**: "The nurse is preparing to administer norepinephrine via a peripheral IV line. Which statement by the nurse is correct?" (Answer: Emphasizes this is not standard and requires extreme caution due to extravasation risk; central line is preferred).

## 임상 시나리오

Nursing Clinical Practice Guide
**Clinical Scenario**: You are the nurse in the Medical ICU. Mr. Johnson, 68, is being treated for urosepsis and septic shock. He has a central line in his right subclavian vein, and norepinephrine is infusing at 12 mcg/min. During your hourly assessment, you note his left hand is pale and cool to the touch compared to his right. His fingers appear blanched, and capillary refill on his left index finger is 5 seconds.

**Nursing Intervention Strategy**:

- **Immediate Assessment & Action**: First, **check the IV site** itself. Is the central line dressing intact? Is there swelling? While central lines have a lower risk, extravasation is still possible. Simultaneously, assess the **right** hand and both feet for comparison. Check distal pulses (radial, dorsalis pedis) with a Doppler if palpable pulses are absent.

- **Communication & Collaboration**: **Notify the provider immediately**. Report using SBAR: Situation (patient on norepinephrine with signs of left-hand ischemia), Background (septic shock, current dose), Assessment (findings, capillary refill time), Recommendation (request for orders, e.g., dose reduction, assessment of line placement).

- **Ongoing Monitoring & Documentation**: Increase the frequency of neurovascular checks (color, temperature, capillary refill, sensation, movement, pulse) to every 15-30 minutes. Meticulously document your findings, actions, and communications. Continue to monitor the overall hemodynamic response (BP, HR, urine output) to ensure treatment of shock is not compromised.

**Patient Safety and Precautions**:

- Key Point! **Vasopressors should ideally be administered through a central venous catheter (CVC)** due to the risk of severe tissue damage with peripheral extravasation. If given peripherally in an emergency, it must be in a large vein with frequent checks and clear labeling.

- Know the **antidote for extravasation of alpha-agonists like norepinephrine: Phentolamine**. It is injected subcutaneously around the extravasation site to cause vasodilation.

- Never ignore subtle changes in skin color or temperature in a patient on vasopressors. Early recognition prevents tissue loss.

Nursing Procedure & Medication Flow
**Administering Norepinephrine (Levophed) Drip**:

- **Line Verification**: Confirm the medication is running through a **central line**. Label the line clearly: "VASOPRESSOR - Norepinephrine".

- **Dose Calculation & Pump Setting**: Norepinephrine is typically diluted (e.g., 4 mg in 250 mL D5W = 16 mcg/mL). The infusion rate (mL/hr) is set based on the ordered dose (mcg/min). Double-check calculations with another nurse.

- **Monitoring Schedule**: Check **blood pressure every 5-15 minutes** until stable, then per unit protocol. Perform **hourly peripheral perfusion checks** (skin assessment, capillary refill). Monitor continuous ECG for arrhythmias.

- **Titration**: Titrate the dose per protocol or provider order to achieve the target Mean Arterial Pressure (MAP), usually ≥ 65 mmHg. Titrate slowly and one parameter at a time.

A Word from Your Senior Nurse
"Managing a patient on pressors is a high-stakes balancing act. We're walking a tightrope between pulling them out of shock and pushing them into ischemia. Your eyes and hands are your most important tools here. That hourly 'touch and look' assessment isn't just a checkbox—it's a lifesaving intervention. On the NCLEX and in real life, they're testing your vigilance. Seeing a BP of 110/70 might feel like a win, but if the patient's toes are turning blue, you've got a bigger problem. Always connect the dots between the drug's mechanism and what you're assessing for. That critical thinking is what makes a great nurse."

## 핵심 개념

- **Norepinephrine** — A potent catecholamine and first-line vasopressor for septic shock. It acts primarily as an alpha-1 adrenergic agonist, causing vasoconstriction to increase systemic vascular resistance and blood pressure.
- **Septic Shock** — A life-threatening condition of distributive shock caused by a dysregulated host response to infection, leading to profound vasodilation, hypotension, and tissue hypoperfusion despite adequate fluid resuscitation.
- **Extravasation** — The leakage of a vesicant or irritant medication (like norepinephrine) from a vein into the surrounding tissue. This can cause severe local tissue damage, including necrosis.
- **Capillary Refill Time** — A quick clinical assessment of peripheral perfusion. Pressure is applied to a nail bed until it blanches, then released. The time for color to return is measured. Normal is < 2 seconds; delayed refill suggests poor perfusion.
- **Phentolamine** — An alpha-adrenergic blocking agent used as an antidote for extravasation of vasoconstrictive medications like norepinephrine. It is injected subcutaneously around the extravasation site to induce vasodilation.

## 같은 주제 문제

- [A nurse is caring for a patient receiving norepinephrine (Levophed) infusion for septic sh…](https://mymerci.kr/pages/nclex_q.php?qn_id=319613)

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