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Difficulty: HardPhysiological Adaptation

A nurse is assessing a client who was admitted 6 hours ago with severe acute pancreatitis. The client has become increasingly restless. Which of the following assessment findings indicate severe physiological decompensation requiring immediate intervention? Select all that apply.

  1. Blood pressure change from 122/78 mm Hg to 94/76 mm HgAnswer
  2. Arterial blood gas values of pH 7.28, PaCO2 54 mm Hg, and PaO2 58 mm HgAnswer
  3. Hourly urine output of 15 mL over the past two hoursAnswer
  4. D
    Core body temperature of 38.3°C (100.9°F)
  5. E
    Warm, flushed skin with bounding peripheral pulses
  6. F
    Arterial blood gas values of pH 7.48, PaCO2 32 mm Hg, and HCO3 23 mEq/L

Answer

The correct findings are the narrowing pulse pressure, the arterial blood gas showing respiratory acidosis with hypoxemia, and the decreased hourly urine output.
Severe acute pancreatitis leads to massive retroperitoneal fluid shifts (third-spacing), resulting in severe hypovolemia and decreased systemic perfusion. A narrowing pulse pressure and oliguria (urine output less than 30 mL/hr) are critical early indicators of compensatory hypovolemic shock. Additionally, the release of systemic inflammatory mediators can trigger Acute Respiratory Distress Syndrome (ARDS), which is evidenced by uncompensated respiratory acidosis (pH < 7.35, PaCO2 > 45) and severe hypoxemia (PaO2 < 60). These three findings demand immediate life-saving interventions.

Step-by-Step Solution

1
Analyze the client's condition and pathophysiology.
Severe acute pancreatitis causes massive systemic inflammation and retroperitoneal fluid shifts (third-spacing).
Understanding the disease process helps predict potential life-threatening complications, primarily hypovolemic shock and Acute Respiratory Distress Syndrome (ARDS).
2
Evaluate cardiovascular and renal assessment findings.
The blood pressure shows a narrowing pulse pressure (from 44 to 18 mm Hg), and the urine output is oliguric (15 mL/hr).
A narrowing pulse pressure and decreased urine output are classic early signs of compensatory hypovolemic shock and inadequate organ perfusion.
3
Evaluate respiratory and laboratory findings.
One ABG shows pH 7.28, PaCO2 54, and PaO2 58. The other shows pH 7.48, PaCO2 32.
The first ABG indicates severe respiratory acidosis and hypoxemia (ARDS), requiring immediate intervention. The second is an expected respiratory alkalosis resulting from pain and anxiety.
4
Evaluate the remaining assessment data.
Temperature is 38.3°C, and skin is described as warm and flushed with bounding pulses.
Fever is an expected inflammatory response. Warm/flushed skin is a sign of early septic shock, which conflicts with the expected hypovolemic presentation caused by third-spacing.

Key Concept

Early recognition of hypovolemic shock (third-spacing) and Acute Respiratory Distress Syndrome (ARDS) in acute pancreatitis.
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Topics

Physiological Adaptation

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