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Difficulty: Very hardReduction of Risk Potential

A nurse in the intensive care unit is caring for a client with acute necrotizing pancreatitis who has received massive intravenous fluid resuscitation over the past 24 hours. The client is increasingly restless and dyspneic. The nurse notes the following assessment findings:

- Urine output has decreased from 45 mL/hr45\text{ mL/hr} to 15 mL/hr15\text{ mL/hr} over the last two hours.
- The abdomen is tense, markedly distended, and firm to palpation.
- Intra-abdominal pressure (IAP) measured via the urinary catheter is 26 mm Hg26\text{ mm Hg}.
- Vital signs: Blood pressure 88/54 mm Hg88/54\text{ mm Hg}, heart rate 128 beats/min128\text{ beats/min}, respiratory rate 28 breaths/min28\text{ breaths/min}.
- Arterial blood gas (ABG) results: pH 7.287.28, PaCO2\text{PaCO}_2 30 mm Hg30\text{ mm Hg}, PaO2\text{PaO}_2 76 mm Hg76\text{ mm Hg}, HCO3−\text{HCO}_3^- 14 mEq/L14\text{ mEq/L}.

Which of the following actions is the highest priority for the nurse to implement to reduce the client's risk for further physiological deterioration?

  1. Maintain the client in a supine position and immediately notify the healthcare provider of the findings.Answer
  2. B
    Elevate the head of the bed to a minimum of 45∘45^\circ to facilitate diaphragmatic excursion and alleviate dyspnea.
  3. C
    Administer prescribed intravenous sodium bicarbonate to correct the uncompensated metabolic acidosis.
  4. D
    Administer a rapid bolus of isotonic crystalloid fluids to restore circulating volume and manage the hypovolemic shock.

Answer

The highest priority action is to maintain the client in a supine position and immediately notify the healthcare provider to prepare for surgical decompression.
The client is exhibiting classical signs of Abdominal Compartment Syndrome (ACS), defined as an intra-abdominal pressure (IAP) greater than 20 mm Hg20\text{ mm Hg} accompanied by new organ dysfunction (e.g., oliguria, hypotension, hypoxia). ACS is a life-threatening complication of massive fluid resuscitation that causes obstructive shock by compressing the inferior vena cava and decreasing venous return. The priority action to reduce the risk of irreversible organ failure is to notify the healthcare provider immediately for emergent surgical decompression (laparotomy). The nurse must maintain the client in a flat, supine position because elevating the head of the bed further compresses the abdominal contents and acutely exacerbates the intra-abdominal pressure.

Step-by-Step Solution

1
Analyze the clinical findings and intra-abdominal pressure (IAP) reading.
The IAP is 26 mm Hg26\text{ mm Hg} (normal is 0−5 mm Hg0-5\text{ mm Hg}), accompanied by oliguria, hypotension, and a rigid abdomen.
Identifying an IAP greater than 20 mm Hg20\text{ mm Hg} combined with new onset organ dysfunction confirms the life-threatening diagnosis of Abdominal Compartment Syndrome (ACS).
2
Interpret the arterial blood gas (ABG) results.
The pH is 7.287.28 (acidosis), HCO3−\text{HCO}_3^- is 14 mEq/L14\text{ mEq/L} (metabolic etiology), and PaCO2\text{PaCO}_2 is 30 mm Hg30\text{ mm Hg} (respiratory compensation).
This confirms partially compensated metabolic acidosis, likely secondary to lactic acidosis from severe tissue hypoperfusion and ischemia.
3
Determine the physiological mechanism of the client's circulatory collapse.
The massive increase in intra-abdominal pressure is physically compressing the inferior vena cava, severely restricting venous return to the heart.
Understanding that this is obstructive shock rather than absolute hypovolemic shock prevents the dangerous administration of additional intravenous fluids.
4
Select the priority nursing intervention to mitigate further physiological risk.
The nurse must keep the client in a flat, supine position and urgently alert the medical team for emergent surgical intervention (laparotomy).
Elevating the head of the bed or administering more fluids will acutely worsen the intra-abdominal pressure, accelerating irreversible organ failure.

Key Concept

Recognition and Emergency Management of Abdominal Compartment Syndrome (ACS)
Estimated Time:2m 30s
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Topics

Reduction of Risk Potential

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