A nurse is caring for a 45-year-old postoperative patient who underwent major abdominal surgery 6 hours ago and suddenly develops signs of hypovolemic shock with blood pressure 80/50 mmHg, heart rate 120 bpm, and decreased urine output. Which nursing intervention should be the nurse's FIRST priority?
A 45-year-old patient underwent major abdominal surgery 6 hours ago and is now showing signs of hypovolemic shock with blood pressure 80/50 mmHg, heart rate 120 bpm, and decreased urine output.
1Establish large-bore IV access and initiate fluid resuscitation✓ 정답
2Administer prescribed vasopressor medications
3Place the patient in Trendelenburg position
4Obtain blood samples for laboratory analysis
해설
In hypovolemic shock, the first priority is to restore intravascular volume via large-bore IV access and fluid resuscitation to address the underlying volume depletion. Other interventions (vasopressors, positioning, lab tests) are secondary or follow initial volume replacement.
Core Nursing ExplanationKey Concept Analysis: This question tests the nurse's ability to prioritize interventions in a patient with Hypovolemic shock. The core pathophysiology is an absolute loss of intravascular volume (in this case, likely due to postoperative bleeding or fluid shifts), leading to decreased cardiac output, tissue hypoperfusion, and the classic signs of shock: hypotension (80/50 mmHg), tachycardia (120 bpm), and oliguria (decreased urine output). The primary goal is to restore perfusion by rapidly replacing the lost volume.
Answer Rationale: Key Point! In hypovolemic shock, the FIRST and most critical intervention is to establish vascular access and begin aggressive fluid resuscitation. This directly addresses the root cause—volume depletion. Large-bore IV catheters (e.g., 16- or 18-gauge) are essential to administer fluids rapidly. This intervention supports the ABC (Airway, Breathing, Circulation) priority framework, specifically addressing "Circulation." Without adequate volume, other interventions will be ineffective or potentially harmful.
Distractor Analysis:
Watch out for confusion! Option ② (Administer vasopressors) is incorrect as a *first* priority. Vasopressors (e.g., norepinephrine) constrict blood vessels to raise blood pressure. However, in hypovolemic shock, administering them before adequate fluid resuscitation can worsen tissue ischemia by further constricting vessels in an already underfilled circulatory system. They are used later if hypotension persists despite fluid resuscitation.
Option ③ (Trendelenburg position) is an outdated and potentially dangerous intervention. Placing the patient head-down can impair respiratory function by increasing abdominal pressure on the diaphragm and may not significantly improve cerebral or coronary perfusion. Modern guidelines emphasize fluid resuscitation and keeping the patient supine with legs elevated only if spinal injury is not suspected.
Option ④ (Obtain lab samples) is an important assessment and diagnostic step but is not the immediate life-saving action. Labs (like CBC, lactate, coagulation studies) provide valuable data but do not treat the underlying hypovolemia. This should be done concurrently or immediately after initiating life-saving measures.
Related Concepts: This scenario integrates knowledge of shock management, postoperative complications, and nursing prioritization (ABCs). Understanding the different types of shock (hypovolemic, cardiogenic, distributive, obstructive) is crucial, as the first-line treatment differs. For example, in cardiogenic shock, fluids are given cautiously, and inotropes may be a higher priority.
Concept Summary
Concept
Key Takeaway
Hypovolemic Shock Pathophysiology
Loss of intravascular volume → ↓ Preload → ↓ Cardiac Output → ↓ Tissue Perfusion.
Primary Nursing Goal
Restore circulating volume and tissue perfusion.
First Priority Intervention
Establish large-bore IV access and initiate rapid fluid resuscitation (crystalloids like Normal Saline or Lactated Ringer's).
Relieve the obstruction (needle decompression, pericardiocentesis)
Anatomy, Physiology & Pharmacology Points
Physiology: The body's initial compensatory response to hypovolemia is sympathetic nervous system activation (tachycardia, peripheral vasoconstriction). When this fails, decompensated shock with hypotension occurs.
Pharmacology - Fluids:Crystalloids (Normal Saline, Lactated Ringer's) are first-line for volume expansion. Colloids (albumin) or blood products may follow based on cause (e.g., blood loss).
Pharmacology - Vasopressors: Drugs like norepinephrine are Key Point!contraindicated as initial therapy for pure hypovolemic shock. They are "rescue" drugs for persistent hypotension after adequate fluid loading.
Memory Tips
ABCs Rule: Always think Airway, Breathing, Circulation. For "Circulation" problems due to volume loss, the action is "Fill the tank!" (Fluids first).
Mnemonic for Shock Interventions (Hypovolemic): "VIP" in order: Volume (IV fluids), Inotropes/Vasopressors (if needed later), Pump/Problem-specific fix.
Trendelenburg is a "No-Go": Remember, this position is largely abandoned in shock management due to respiratory compromise.
High-Frequency NCLEX Topics
Prioritization ("first," "priority," "initial") in emergency or deteriorating patient scenarios is a core NCLEX strategy. Hypovolemic shock, often linked to trauma, surgery, or GI bleed, is a classic test case. The exam consistently tests the principle that treating the cause (volume loss with volume replacement) comes before treating the symptom (low BP with vasopressors).
Watch Out for Question Variations!
Variation 1 (Assessment Focus): "Which finding is the earliest indicator of hypovolemic shock?" Answer: Tachycardia and decreased urine output often occur before significant hypotension.
Variation 2 (Medication Focus): "The patient remains hypotensive after 2 liters of IV fluid. Which medication should the nurse anticipate administering next?" Answer: A vasopressor (e.g., norepinephrine), as guided by protocols or physician orders.
Variation 3 (Post-Op Complication): "A post-op patient has a falling BP and a rigid, distended abdomen. What is the nurse's priority?" This hints at internal hemorrhage. The priority is still IV access/fluids while preparing the patient for potential return to surgery.
Nursing Clinical Practice GuideClinical Scenario: You are the nurse on a surgical floor. Mr. Johnson, 45, had a colectomy 6 hours ago. His call light is on. You enter to find him anxious, pale, and diaphoretic. His vital signs are BP 80/50, HR 122, RR 28, SpO2 94% on room air. His surgical dressing is dry, but his abdomen is firm to palpation. He has only put out 15 mL of urine in the last hour via Foley catheter.
Nursing Intervention Strategy:
Immediate Action (Within seconds): Call for help (activate rapid response/code team per hospital policy). Simultaneously, assess for patent airway and adequate breathing.
Priority Intervention (Within 1-2 minutes):Key Point! If not already present, establish TWO large-bore (16- or 18-gauge) IV lines. If IV access is difficult, consider informing the team of the need for intraosseous (IO) access. Initiate a rapid infusion of isotonic crystalloid (e.g., Normal Saline or Lactated Ringer's) via pressure bag.
Concurrent Actions:
Place patient on continuous cardiac, BP, and SpO2 monitoring.
Administer high-flow oxygen via non-rebreather mask to maximize oxygen delivery.
Keep patient flat; avoid Trendelenburg.
Obtain stat lab draws (CBC, lactate, type and crossmatch) from the newly established IV line to avoid delay.
Perform a focused assessment: check all surgical sites/drains for bleeding, reassess abdomen, check for other sources of loss (e.g., GI).
Ongoing Management & Communication: Report findings clearly to the provider/surgeon: "Post-op day 0 colectomy patient with signs of hypovolemic shock: BP 80s, HR 120s, oliguria. Two large-bore IVs established, fluids running wide open. Suspect internal bleeding." Anticipate orders for blood products and possible return to the OR.
Patient Safety and Precautions:
Fluid Warmers: For massive rapid infusion, use fluid warmers to prevent hypothermia, which can worsen coagulopathy.
Monitor for Complications: Watch for signs of fluid overload (crackles in lungs, worsening edema) once the patient is resuscitated, especially if cardiac function is unknown.
Vasopressor Caution: If vasopressors are initiated, they must be administered via a central line due to risk of tissue necrosis if they extravasate from a peripheral IV. Titrate carefully based on BP parameters.
Nursing Procedure & Medication FlowProcedure: Establishing Large-Bore IV Access for Rapid Infusion
Select largest possible, shortest catheter (e.g., 16G or 18G, 1-1.25 inch) in a large vein (antecubital, forearm).
Use aseptic technique. Secure the catheter meticulously with a securement device.
Connect to IV tubing with wide-bore, short extension sets to minimize resistance.
Use a pressure infusion bag to achieve flow rates of 999 mL/hr or more.
Label the line clearly as a "Rapid Infusion Line."
Medication: Fluid Resuscitation Calculations The initial bolus for an adult in shock is often 20-30 mL/kg of crystalloid. For a 70 kg patient: 70 kg x 30 mL/kg = 2100 mL. This bolus is typically given as fast as possible, then the patient is reassessed.
A Word from Your Senior Nurse
"In the chaos of a crashing patient, your brain might scream to do ten things at once. Remember your ABCs and your 'VIP' order. In hypovolemic shock, the patient's tank is empty. You can't fix low pressure with a squeezer (vasopressor) on an empty hose—you have to fill the tank first. Your quick action to get those big IVs in and fluids running is the single most important thing you can do. It buys time for the team to figure out the cause. On the NCLEX and at the bedside, mastering this prioritization saves lives."