A 60-year-old patient is admitted to the emergency departmen… | 마이메르시 MyMerci
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문제

A 60-year-old patient is admitted to the emergency department with severe hypotension and decreased tissue perfusion. The patient's blood pressure is 80/40 mmHg, heart rate is 120 bpm, and urine output has decreased to 15 mL/hr. Which nursing intervention should be the highest priority?

해설
In distributive shock, the primary pathophysiology involves massive vasodilation leading to relative hypovolemia and inadequate tissue perfusion. The highest priority is establishing vascular access for fluid resuscitation and potential vasopressor administration.

심화 해설

Core Nursing Explanation Key Concept Analysis: This question assesses the priority nursing intervention for a patient in shock. The patient presents with classic signs of shock: severe hypotension (80/40 mmHg), tachycardia (120 bpm), and oliguria (15 mL/hr). The primary goal in shock management is to restore tissue perfusion and oxygen delivery to vital organs.

Answer Rationale: Key Point! The immediate priority is to establish a reliable route for fluid resuscitation. Without adequate IV access, life-saving fluids and medications cannot be administered. Large-bore IV access (e.g., 16- or 18-gauge) is essential to rapidly infuse large volumes of crystalloid fluids (like Normal Saline or Lactated Ringer's) to correct the relative or absolute hypovolemia that is causing the hypotension and poor perfusion.

Distractor Analysis:
  1. Watch out for confusion! While administering oxygen is a critical intervention in shock to maximize oxygen saturation, it is typically addressed simultaneously with or immediately after securing IV access. In the ABC (Airway, Breathing, Circulation) framework, Circulation (establishing access and restoring volume) is the immediate priority when the airway is patent and the patient is breathing, as implied here.
  2. Correct Answer. Establishing IV access is the foundational action that enables all other critical interventions.
  3. Inserting a urinary catheter is important for accurate monitoring of urine output, which is a key indicator of renal perfusion and the effectiveness of resuscitation. However, it is a secondary intervention that should not delay the initiation of fluid therapy.
  4. Positioning the patient in Trendelenburg position (head down, feet up) is an outdated practice for hypotension. Current evidence shows it can impair respiratory function and does not significantly improve blood pressure or cardiac output. The preferred position is often flat or with legs elevated slightly if spinal injury is not suspected.
Related Concepts: This scenario is consistent with distributive shock (e.g., septic, anaphylactic, neurogenic), where massive vasodilation causes a relative hypovolemia. The initial management for most types of shock includes fluid resuscitation. The nurse must also continuously reassess the patient's response to fluids (vital signs, urine output, mental status) and prepare for the administration of vasopressors (e.g., norepinephrine) if hypotension persists despite adequate fluid volume.

Concept Summary
ProblemPathophysiologyPriority Nursing ActionRationale
Shock with Severe HypotensionInadequate tissue perfusion due to low blood volume, pump failure, or massive vasodilation.Establish large-bore IV access for fluid resuscitation.Restores circulating volume, the most immediate way to improve perfusion pressure to vital organs.

Side-by-Side Comparison!
InterventionPriority Level in ShockRationale
Establish IV Access & FluidsHighest Priority (Circulation)Directly addresses the core problem of hypoperfusion. Enables all other drug therapies.
Administer High-Flow OxygenHigh Priority (Breathing)Supports oxygenation but does not fix the delivery problem if blood pressure is too low to circulate oxygen.
Insert Foley CatheterSecondary Priority (Monitoring)Provides crucial data on resuscitation effectiveness but is not therapeutic itself.

Anatomy, Physiology & Pharmacology Points
  • Physiology: Mean Arterial Pressure (MAP) = Cardiac Output x Systemic Vascular Resistance. In shock, one or both components are compromised. Fluids increase preload and stroke volume, thus increasing Cardiac Output.
  • Pharmacology: After fluid resuscitation, if hypotension persists, vasopressors (e.g., norepinephrine) are used to increase Systemic Vascular Resistance. They require a central line for safe administration due to risk of tissue necrosis if extravasated.

Memory Tips
  • ABCs with a twist for Shock: Think "Circulation first" when the patient is hypotensive. Airway and Breathing are assessed in seconds, but action starts with IV access.
  • Mnemonic for Shock Management (VIP): Ventilate (Oxygen), Infuse (Fluids), Pump (Drugs/Vasopressors).

High-Frequency NCLEX Topics Shock management is a high-yield NCLEX topic. Expect questions on:
  1. Identifying signs of shock (hypotension, tachycardia, cool clammy skin or warm skin in distributive shock, altered mental status, oliguria).
  2. Prioritizing interventions (ABCs, IV access, fluids).
  3. Monitoring for complications (fluid overload, electrolyte imbalances).

Watch Out for Question Variations!
  • Variation 1 (Type of Shock): "A patient with a spinal cord injury is hypotensive and bradycardic. What is the priority?" Answer might shift to neurogenic shock management, where fluids AND vasopressors are key, but the initial action is still establish IV access.
  • Variation 2 (Post-Intervention): "After initiating fluid resuscitation for a patient in septic shock, the nurse notes crackles in the lungs. What is the next priority?" Answer would focus on assessing for fluid overload and preparing to administer diuretics or adjust fluid rates, highlighting the need for continuous assessment.

임상 시나리오

Nursing Clinical Practice Guide Clinical Scenario: You are the nurse in the ED (Emergency Department). Mr. Johnson, 60, was brought in by ambulance. He is lethargic, his skin is cool and mottled, BP is 80/40, HR 120, SpO2 92% on room air. The physician suspects severe sepsis leading to septic shock.

Nursing Intervention Strategy:
  1. Immediate Simultaneous Actions (Within Minutes):
    • Call for help and alert the rapid response or code team if needed.
    • Assess Airway & Breathing: Ensure patent airway. Apply a non-rebreather mask (NRB) at 15 L/min to achieve SpO2 > 94%.
    • Establish Circulation Access: Insert two large-bore (16-gauge) IV catheters in large peripheral veins (e.g., antecubital). If peripheral access is impossible, prepare for intraosseous (IO) access.
    • Initiate Fluid Resuscitation: Hang 0.9% Normal Saline or Lactated Ringer's. Administer a fluid bolus (e.g., 30 mL/kg) as ordered, typically 1-2 liters rapidly. Use pressure bags to increase infusion rate.
  2. Secondary Assessments & Interventions:
    • Insert an indwelling urinary catheter (Foley) to strictly monitor hourly urine output (goal > 0.5 mL/kg/hr).
    • Obtain blood cultures and labs (lactate level, CBC, CMP) before administering antibiotics if possible, but do not delay antibiotics for more than 45 minutes.
    • Begin continuous cardiac monitoring and frequent vital sign checks (every 5-15 minutes initially).
Patient Safety and Precautions:
  • Fluid Overload: Continuously assess lung sounds, respiratory effort, and jugular venous distension (JVD) during rapid fluid administration, especially in patients with a history of heart failure.
  • Medication Safety: Vasopressors (e.g., Norepinephrine) must be administered via a central venous catheter to prevent severe tissue damage from extravasation.
  • Infection Control: Maintain strict aseptic technique during all invasive procedures (IV insertion, Foley catheterization).

Nursing Procedure & Medication Flow Procedure: Establishing Large-Bore IV Access for Resuscitation
  1. Gather equipment: 16- or 18-gauge IV catheter, tourniquet, chlorhexidine swab, securement device, IV tubing primed with fluid, pressure bag.
  2. Select a large, straight vein in the antecubital fossa or forearm.
  3. Apply tourniquet, clean site for 30 seconds with chlorhexidine, let dry.
  4. Insert catheter at a 15-30 degree angle, observe for flashback of blood.
  5. Advance catheter fully, release tourniquet, connect primed tubing.
  6. Secure firmly. Apply a pressure bag to the IV fluid bag and inflate to 300 mmHg to achieve a rapid infusion rate.
Medication: Fluid Bolus Administration
  • Solution: 0.9% Normal Saline (NS) or Lactated Ringer's (LR).
  • Dose: Often 1-2 liters (1000-2000 mL) as an initial bolus.
  • Rate: Infuse as rapidly as possible, often over 15-30 minutes, using a pressure bag. Monitor for signs of volume overload.

A Word from Your Senior Nurse "In the chaos of a crashing patient, your training kicks in. Remember your ABCs, but know that in shock, the 'C' for Circulation often demands your first concrete action—getting that IV line. You can't give life-saving drugs through thin air. In clinical practice, securing good access is a fundamental skill that saves lives every day. When you study, don't just memorize 'fluids for shock.' Understand why: the body's vessels are like an empty hose; you need to fill it with volume before you can turn on the pressure pump (vasopressors). This mindset of linking pathophysiology to action is what makes a great nurse."

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