# A 45-year-old patient is admitted to the emergency department with suspected septic shock. The patient's vital signs are: blood pressure 85/50 mmHg, heart rate 125 bpm, respiratory rate 28/min, temperature 101.8°F (38.8°C), and oxygen saturation 89% on room air. Which nursing intervention should be the highest priority?

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## 문제

A 45-year-old patient is admitted to the emergency department with suspected septic shock. The patient's vital signs are: blood pressure 85/50 mmHg, heart rate 125 bpm, respiratory rate 28/min, temperature 101.8°F (38.8°C), and oxygen saturation 89% on room air. Which nursing intervention should be the highest priority?

The patient appears restless and confused, with cool, mottled skin and delayed capillary refill of 4 seconds. Laboratory results show lactate level of 4.2 mmol/L and white blood cell count of 18,000/μL.

## 보기

1. Administer prescribed antibiotics immediately
2. Insert a urinary catheter to monitor output
3. Establish large-bore IV access and initiate fluid resuscitation **✔ 정답**
4. Obtain blood cultures before antibiotic administration

**정답: 3**

## 해설

In septic shock, the priority is hemodynamic stabilization through aggressive fluid resuscitation to restore tissue perfusion and prevent organ failure.

This question evaluates critical thinking about priority nursing interventions in septic shock management. Septic shock is a life-threatening condition characterized by severe hypotension, inadequate tissue perfusion, and multiple organ dysfunction.

The patient exhibits classic signs of septic shock: hypotension (85/50 mmHg), tachycardia (125 bpm), altered mental status (anxiety and confusion), decreased skin perfusion (cool, mottled skin), delayed capillary refill (4 seconds), and elevated lactate level (4.2 mmol/L). These findings indicate tissue hypoperfusion and anaerobic metabolism.

The top priority in septic shock management is hemodynamic stabilization through aggressive fluid resuscitation. Establishing large-bore intravenous access allows rapid administration of crystalloid solutions (typically 30 mL/kg within the first 3 hours) to restore intravascular volume and improve tissue perfusion. This intervention directly addresses the underlying pathophysiology of distributive shock, which is characterized by relative hypovolemia due to vasodilation and increased capillary permeability.

The patient's elevated lactate level indicates tissue hypoperfusion and anaerobic metabolism, making immediate fluid resuscitation critical to prevent irreversible organ damage. The goal is to restore mean arterial pressure to 65 mmHg or higher and improve tissue perfusion indicators. Without adequate fluid resuscitation, other interventions are less effective, and the patient may progress to irreversible shock and multiple organ failure.

This represents the "golden hour" concept in sepsis management, where early aggressive intervention significantly impacts patient outcomes. Nurses must recognize that hemodynamic instability takes priority over other important but not immediately life-threatening interventions.

## 심화 해설

Understanding the Clinical Presentation

This patient presents with a classic picture of septic shock, a life-threatening condition where an underlying infection leads to dangerous vasodilation, increased capillary permeability, and myocardial depression. The vital signs are critically abnormal: blood pressure 85/50 mmHg (hypotension), heart rate 125 bpm (compensatory tachycardia), respiratory rate 28/min (tachypnea due to metabolic acidosis and hypoxemia), and oxygen saturation 89% on room air. The assessment findings of cool, mottled skin with a capillary refill of 4 seconds indicate profound peripheral vasoconstriction and hypoperfusion, a hallmark of the "cold shock" presentation. The elevated lactate level of 4.2 mmol/L provides laboratory confirmation of tissue hypoxia and anaerobic metabolism, a direct consequence of inadequate oxygen delivery to the cells. The patient's altered mental status (restlessness, confusion) further signals that the brain is not receiving adequate perfusion.

Prioritizing Interventions Using the Sepsis Bundle Framework

The management of septic shock is time-sensitive and protocol-driven, as emphasized by the Surviving Sepsis Campaign and reflected in the SEP-1 bundle. This bundle structures care into elements that must be completed within specific timeframes, starting from the moment of recognition. The core principle of initial resuscitation is to restore adequate tissue perfusion. The patient’s hypotension, high lactate, and physical signs of hypoperfusion define a state of refractory septic shock risk, where delayed or inadequate resuscitation leads to rapid deterioration and multi-organ failure [4]. The highest priority intervention is therefore to reverse the shock state by increasing intravascular volume and cardiac output. This is achieved by immediately establishing large-bore IV access and initiating fluid resuscitation with crystalloids. This directly addresses the primary physiological problem—hypovolemia relative to the expanded vascular space—and is the foundational step upon which all other therapies, including vasopressors, depend. Without adequate venous access and initial volume expansion, the delivery of antibiotics and further monitoring is less effective because the drugs cannot circulate properly.

Analyzing the Remaining Options

While the other listed interventions are essential components of sepsis care, they are secondary to the immediate need for circulatory support.

- Option 1 (Administer prescribed antibiotics immediately): Antibiotic administration is a critical, time-sensitive intervention. However, in a patient with profound hypoperfusion, the distribution of antibiotics to target tissues is severely compromised. Fluid resuscitation restores the circulatory volume, enhancing the delivery and efficacy of the antibiotics. Therefore, while antibiotics should be given as soon as possible after recognition, the very first physical act for the nurse is to secure IV access and start fluids, which can be done simultaneously with preparing the antibiotics but takes logistical priority [1][2].

- Option 2 (Insert a urinary catheter to monitor output): Monitoring urine output is a key measure of renal perfusion and fluid responsiveness. However, inserting a catheter is not an immediate life-saving measure. It provides monitoring data but does not itself treat the underlying shock. This intervention is appropriate after initial resuscitation has begun and the patient is more stable.

- Option 4 (Obtain blood cultures before antibiotic administration): Obtaining cultures prior to antibiotics is a best practice to identify the causative organism without the confounding effect of antibiotics. However, this diagnostic step should not delay the initiation of resuscitation. In practice, blood cultures can be drawn during the same critical window as IV insertion and the start of fluids, but the act of obtaining cultures itself is not the highest priority action to prevent imminent cardiovascular collapse. The SEP-1 bundle emphasizes that both cultures and antibiotics are time-sensitive, but the physiological priority is to first address the life-threatening hypoperfusion [2].

The concept of a “first-hour bundle” in septic shock underscores that the sequence of actions matters. The immediate focus is on the ABCs (Airway, Breathing, Circulation). This patient has a patent airway and is breathing, albeit with low saturation. The “C” for circulation is the most deranged component, with a blood pressure that is insufficient to perfuse vital organs. The evidence from studies on fluid resuscitation guidance, such as using the Pv-aCO2/Ca-vO2 ratio, is built upon the premise that adequate initial fluid loading has been performed, further confirming that volume expansion is the foundational step [3]. The nurse's priority is to act on the circulatory failure first by establishing large-bore IV access and beginning a rapid crystalloid bolus.References (research sources)

- [1]Care Pathway and Outcomes in Pediatric Septic Shock: A Narrative Review from Emergency Department Recognition to PICU Management.Research articleBriassouli E, Briassoulis G. (2026) · DOI: 10.3390/children13050622

- [2]Artificial Intelligence to Facilitate SEP-1 Measure Compliance and Fluid Management in Sepsis.Research articleNguyen HB, Krishtopaytis E, Lopez E, Farnoudi N, Van T, Kharalampova V, Coz Yataco A. (2026) · DOI: 10.3390/jcm15093477

- [3]Central venous-arterial CO2 gap to arterial-central venous O2 content difference ratio in guiding of fluid resuscitation of patients with septic shock.Research articleFang XW, Weng YR, Jiang X, Wu ZT, Ye GJ. (2026) · DOI: 10.1097/md.0000000000048666

- [4]Incidence and Outcomes of Refractory Septic Shock per Consensus Clinical Criteria: A Multicohort Retrospective Study.GuidelineBauer SR, Wieruszewski PM, Khanna AK, Leone M, Barreto EF, Dugar S, Sacha GL, Mourany L, Gunsalus PR, Milinovich A, Reddy AJ, Kane-Gill SL, Tarabichi Y, Wang X, Dalton JE, Vachharajani V. (2026) · DOI: 10.1097/ccm.0000000000007234

## 임상 시나리오

Septic Shock: Initial Resuscitation PriorityApplying the Hour-1 Bundle at the Bedside
For a patient with suspected septic shock and a lactate level ≥4 mmol/L, the immediate priority is to establish large-bore IV access and begin rapid crystalloid fluid resuscitation at 30 mL/kg.

This intervention directly targets the underlying pathology of tissue hypoperfusion. Restoring intravascular volume improves cardiac output and oxygen delivery, aiming to clear lactate and reverse altered mental status.

CautionFluid resuscitation takes precedence over antibiotic administration in the initial minutes. Blood cultures and antibiotics are critical components of the Hour-1 Bundle but should be initiated concurrently or immediately after the fluid bolus is started, not before.

## 핵심 개념

- **Septic Shock** — A subset of sepsis with profound circulatory and cellular metabolism abnormalities, associated with a higher risk of mortality, clinically identified by vasopressor requirement to maintain a mean arterial pressure of 65 mmHg or greater and serum lactate level greater than 2 mmol/L in the absence of hypovolemia.
- **Lactate Clearance** — The process of metabolizing accumulated lactic acid, used as a marker of adequate tissue perfusion and resuscitation effectiveness; a decrease in lactate levels indicates improved oxygen delivery.
- **Surviving Sepsis Campaign (SSC)** — A global initiative to improve the management, diagnosis, and treatment of sepsis and septic shock, providing evidence-based guidelines and care bundles such as the Hour-1 Bundle.
- **Hour-1 Bundle** — The initial resuscitation bundle for sepsis and septic shock, requiring that within 1 hour of recognition, lactate is measured, blood cultures are obtained, broad-spectrum antibiotics are administered, crystalloid fluid is begun for hypotension or lactate ≥4 mmol/L, and vasopressors are started if fluid is refractory.
- **Capillary Refill Time (CRT)** — A quick assessment of peripheral perfusion status; a prolonged CRT (>2 seconds) indicates poor skin perfusion, often due to vasoconstriction from shock or hypoperfusion.

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