A 45-year-old patient is admitted to the emergency department with signs of distributive shock. The patient's blood pressure is 78/45 mmHg, heart rate is 125 bpm, and urine output has decreased to 15 mL/hr over the past 2 hours. Which nursing action should be the highest priority?

In distributive shock, the primary pathophysiology involves massive vasodilation leading to relative hypovolemia. The immediate priority is fluid resuscitation through large-bore IV access to restore circulating volume and improve tissue perfusion before considering vasopressor therapy.

Core Nursing Explanation Key Concept Analysis: This question tests the priority nursing intervention for a patient in distributive shock. The core pathophysiology involves massive systemic vasodilation (often due to sepsis, anaphylaxis, or neurogenic causes), which causes a relative hypovolemia. Blood pools in the dilated peripheral vessels, leading to a drastic drop in venous return, cardiac output, and ultimately, tissue perfusion. The patient's vital signs (BP 78/45 mmHg, HR 125 bpm) and oliguria (urine output < 30 mL/hr) are classic signs of shock and inadequate renal perfusion.

Answer Rationale: Key Point! In the initial management of distributive shock, the first and highest priority is to restore intravascular volume. Even though the total body fluid may be normal, the effective circulating volume is critically low. Rapid fluid resuscitation with isotonic crystalloids (e.g., Normal Saline, Lactated Ringer's) via large-bore IV access (e.g., two 18-gauge or larger catheters) is the cornerstone of therapy. This action directly addresses the root problem of inadequate preload, helps to stabilize blood pressure, and improves organ perfusion, which can reverse the oliguria. Fluids must be given before or concurrently with vasopressors to prevent worsening organ ischemia.

Distractor Analysis: Watch out for confusion! While Administering vasopressors (Option 1) is a critical intervention for distributive shock, it is not the first priority. Vasopressors (e.g., norepinephrine) are used to counteract vasodilation and increase vascular tone, but giving them to a volume-depleted patient can be dangerous and ineffective. Fluids are the initial resuscitative measure.
Inserting a urinary catheter (Option 3) is important for accurate monitoring of urine output, which is a key indicator of renal perfusion and shock resolution. However, it is an assessment and monitoring action, not a life-saving intervention that directly reverses the shock state. It follows initial resuscitation.
Obtaining blood samples (Option 4), including for lactate (a marker of tissue hypoxia), is essential for diagnosis and guiding therapy. Like the urinary catheter, this is a diagnostic step that informs care but does not immediately treat the underlying perfusion deficit.

Related Concepts: The nursing priority follows the ABC (Airway, Breathing, Circulation) framework. In this scenario, the airway and breathing are not explicitly compromised, so the focus is on Circulation. The principle of "fluids first" in distributive shock is a fundamental tenet of emergency and critical care nursing. Understanding the different types of shock (hypovolemic, cardiogenic, obstructive, distributive) and their distinct initial management priorities is crucial.

Concept Summary

Concept	Description	Clinical Implication
Distributive Shock	Pathological vasodilation causing relative hypovolemia and maldistribution of blood flow. Common causes: Sepsis, Anaphylaxis, Spinal Cord Injury (Neurogenic).	Patient is "warm and flushed" initially (warm shock) due to peripheral vasodilation, despite being hypotensive.
Initial Priority	Aggressive IV Fluid Resuscitation	Goal: Restore effective circulating volume and preload to support cardiac output. Use isotonic crystalloids.
Subsequent Therapy	Vasopressor Administration	Initiated if hypotension persists despite adequate fluid resuscitation. Constricts blood vessels to raise BP.
Key Assessment	Urine Output	Target: >0.5 mL/kg/hr. Oliguria ( 2 mmol/L indicates tissue hypoxia and anaerobic metabolism, confirming the severity of shock. A decreasing lactate trend shows resuscitation is effective. Memory Tips Shock Priorities Mnemonic: "Fill the Tank, Then Squeeze the Pipes" – First give IV fluids to "fill the tank" (intravascular space), then give vasopressors to "squeeze the pipes" (constrict vessels). For distributive shock, think: "WARM and WET" – Patient looks WARM (vasodilated) but is internally "dry" (relative hypovolemia), so they need WET (fluids). High-Frequency NCLEX Topics Shock management is a High Yield NCLEX topic. Expect questions on: Identifying the type of shock based on symptoms. Determining the priority nursing action (often testing the ABCs and the "fluids vs. drugs" decision). Interpreting key assessment findings (vital signs, urine output, mental status, skin). Understanding the purpose and monitoring for vasoactive medications. Watch Out for Question Variations! The same concept can be tested differently: "Which assessment finding is most critical to report?" → Answer: A drop in urine output to oliguric levels. "The patient's BP is still 80/50 after 2 liters of IV fluid. What is the nurse's next anticipated action?" → Answer: Prepare to administer a vasopressor as prescribed. "Which patient is at greatest risk for developing distributive shock?" → Answer: A patient with a major burn injury or signs of systemic infection. 임상 시나리오 Nursing Clinical Practice Guide Clinical Scenario: You are the triage nurse in the ED. Mr. Jones, 45, is brought in by ambulance. He is alert but anxious, with a fever of 102.5°F (39.2°C). His skin is warm and flushed. As you connect him to the monitor, you see the alarming vitals: BP 78/45, HR 125, SpO2 94% on room air. The paramedics report he has a history of a recent urinary tract infection and has been feeling weak for two days. Nursing Intervention Strategy: Immediate Action (First 5 minutes): Shout for help. While maintaining the patient's airway, you or a colleague establish two large-bore (16- or 18-gauge) IV lines in large peripheral veins (e.g., antecubital). Simultaneously, hang 1-2 liters of Normal Saline or Lactated Ringer's solution to run wide open via an infusion pump or pressure bag. Assessment & Monitoring: Assign a team member to insert a Foley catheter for strict I&O. Obtain blood for CBC, CMP, lactate, and blood cultures before starting antibiotics if possible, but do not delay fluids for labs. Apply continuous cardiac, BP, and pulse oximetry monitoring. Collaborative Care: Notify the physician/rapid response team immediately. Anticipate orders for broad-spectrum IV antibiotics (for presumed sepsis), vasopressor initiation (likely via a central line), and possibly transfer to the ICU. Ongoing Evaluation: Reassess vitals and mental status every 5-15 minutes. The goal of fluid resuscitation is to achieve a MAP > 65 mmHg and improve urine output. Watch for signs of fluid overload (crackles in lungs, increased JVD), especially if the patient has underlying heart disease. Patient Safety and Precautions: IV Access: Use large-bore catheters. If peripheral access is impossible, prepare for intraosseous (IO) access or central line placement. Fluid Administration: Use a pressure bag or rapid infuser for the initial boluses. Document the exact amount and time of fluids given. Medication Safety: Vasopressors are high-alert medications. They must be administered via a central line whenever possible to prevent severe tissue necrosis if they extravasate. Use an infusion pump and label the line clearly. Infection Control: Maintain strict aseptic technique for all line insertions and catheter care to prevent introducing new infections. Nursing Procedure & Medication Flow Procedure: Managing a Patient in Septic Shock (Early Phase) 1. Recognize & Activate: Identify SIRS/sepsis criteria (e.g., fever, tachycardia, tachypnea, altered mental status). Call for help. 2. Circulation First: Obtain IV access x2 → Start 30 mL/kg crystalloid bolus (for an 80 kg patient, that's ~2.4 L). 3. Monitor Response: Assess BP, HR, capillary refill, urine output, and lactate levels. 4. Initiate Vasopressors: If MAP remains 핵심 개념 Distributive Shock — A form of shock characterized by widespread vasodilation and decreased systemic vascular resistance, leading to maldistribution of blood flow and relative hypovolemia. Common causes include sepsis, anaphylaxis, and neurogenic injury. Oliguria — A decreased urine output, typically defined as less than 400 mL per day or less than 0.5 mL/kg/hr. It is a key sign of inadequate renal perfusion, often seen in shock states. Fluid Resuscitation — The rapid administration of intravenous fluids (usually isotonic crystalloids like Normal Saline) to restore circulating blood volume, improve preload and cardiac output, and reverse tissue hypoperfusion in conditions like shock. Vasopressor — A medication that causes vasoconstriction, thereby increasing systemic vascular resistance and blood pressure. Examples include norepinephrine, dopamine, and vasopressin. Used in shock when hypotension persists despite adequate fluid resuscitation. Mean Arterial Pressure — The average pressure in a patient's arteries during one cardiac cycle. It is a critical indicator of perfusion pressure to vital organs. Calculated as: MAP = Diastolic BP + 1/3(Pulse Pressure). A MAP of 마이메르시로 국가고시 완벽 대비 기출문제와 상세 해설을 무료로. 내 약점을 분석하고 진도를 관리하며 더 똑똑하게 공부하세요. 무료로 시작하기 App Store Google Play 학습 참고용입니다. 실제 임상은 최신 지침과 소속 기관 프로토콜을 따르세요.