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Difficulty: HardPhysiological Adaptation

A nurse is assessing a client admitted with acute hemorrhagic pancreatitis who is receiving continuous intravenous fluid resuscitation. Which of the following findings indicate the client is developing early hypovolemic shock? Select all that apply.

  1. A pulse pressure that narrows from 45 mmHg to 20 mmHgAnswer
  2. Urine output of 15 mL/hour for the past two consecutive hoursAnswer
  3. New-onset restlessness and unexplained agitationAnswer
  4. D
    Capillary refill time of 2 seconds in the distal extremities
  5. E
    Arterial blood gas values of pH 7.32, PaCO2 55 mmHg, and HCO3 26 mEq/L
  6. F
    Persistent, severe epigastric pain radiating to the back

Answer

The correct findings indicating early hypovolemic shock are a narrowing pulse pressure, decreased urine output (15 mL/hour), and new-onset restlessness.
In early hypovolemic shock, compensatory mechanisms activate to maintain cardiac output. Sympathetic stimulation causes peripheral vasoconstriction, which raises diastolic blood pressure while decreased stroke volume lowers systolic pressure, resulting in a narrowed pulse pressure. Blood is shunted away from the kidneys, reducing glomerular filtration rate and causing oliguria (less than 30 mL/hr). Additionally, the brain is highly sensitive to slight decreases in oxygenation and perfusion, making new-onset restlessness, anxiety, or agitation an early hallmark of deterioration.

Step-by-Step Solution

1
Analyze the client's diagnosis and risk factors.
The client has acute hemorrhagic pancreatitis, which causes massive fluid shifts (third-spacing) and potential internal bleeding, putting them at high risk for hypovolemic shock.
Understanding the underlying pathophysiology establishes the context for recognizing specific complications.
2
Identify the physiological hallmarks of early hypovolemic shock.
Early shock triggers compensatory sympathetic responses: vasoconstriction (narrowed pulse pressure), tachycardia, shunting of blood from non-vital organs (oliguria), and mild cerebral hypoxia (restlessness).
Differentiating early shock from late shock (where profound hypotension and unresponsiveness occur) is critical for timely intervention.
3
Evaluate each option against the early signs of shock.
Narrowing pulse pressure, oliguria, and restlessness match the compensatory phase of shock. Normal capillary refill, respiratory acidosis, and localized pain do not reflect systemic hypoperfusion.
Systematically ruling out expected findings or unrelated pathologies isolates the correct indicators of hemodynamic deterioration.

Key Concept

Early recognition of systemic hypoperfusion and compensatory mechanisms in hypovolemic shock
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Physiological Adaptation

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