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Difficulty: Very hardPhysiological Adaptation

During bedside rounds in the intensive care unit, the nurse assesses a client admitted 2424 hours ago with acute necrotizing pancreatitis. The client is now profoundly lethargic. Current vital signs reveal a blood pressure of 82/4882/48 mm Hg, a heart rate of 136136 beats/minute, and a respiratory rate of 3636 breaths/minute. Auscultation identifies diffuse coarse crackles bilaterally. Arterial blood gas (ABG) results while receiving 100%100\% oxygen via a non-rebreather mask are: pH 7.287.28, PaCO 2_2 5454 mm Hg, PaO 2_2 4848 mm Hg, and HCO 3−_3^- 2020 mEq/L. Based on this client's physiological decompensation, which of the following actions should the nurse anticipate? Select all that apply.

  1. Prepare the client for endotracheal intubation and mechanical ventilation with positive end-expiratory pressure.Answer
  2. Initiate rapid administration of prescribed intravenous isotonic crystalloids.Answer
  3. Evaluate for facial muscle twitching upon tapping the cheek.Answer
  4. D
    Administer a prescribed intravenous loop diuretic to alleviate the bilateral pulmonary crackles.
  5. E
    Initiate a prescribed vasopressor infusion to increase blood pressure prior to volume expansion.
  6. F
    Instruct the client to breathe into a paper bag to reverse an underlying respiratory alkalosis.

Answer

The correct actions are preparing for endotracheal intubation, initiating rapid intravenous isotonic crystalloids, and evaluating for facial muscle twitching.
The client is experiencing severe, concurrent complications of acute necrotizing pancreatitis: Acute Respiratory Distress Syndrome (ARDS), distributive/hypovolemic shock from massive third-spacing, and risk for hypocalcemia. The ABG demonstrates refractory hypoxemia and mixed acidosis, necessitating immediate endotracheal intubation and mechanical ventilation. Profound hypotension and tachycardia require rapid isotonic crystalloid volume resuscitation to restore organ perfusion. Furthermore, tapping the facial nerve evaluates for the Chvostek sign, a classic indicator of hypocalcemia which is highly common in severe pancreatitis due to fat saponification.

Step-by-Step Solution

1
Analyze the arterial blood gas (ABG) and respiratory status.
The ABG reveals mixed respiratory and metabolic acidosis (pH 7.287.28, PaCO 2_2 5454, HCO 3−_3^- 2020) with severe refractory hypoxemia (PaO 2_2 4848 on 100%100\% FiO 2_2), indicating Acute Respiratory Distress Syndrome (ARDS).
To determine the severity of respiratory failure and establish the need for immediate invasive airway management.
2
Evaluate the systemic hemodynamic parameters.
Profound hypotension (82/4882/48 mm Hg) and marked tachycardia (136136 bpm) signify decompensated shock.
To identify massive third-spacing and fluid shifts inherent to necrotizing pancreatitis, prioritizing aggressive volume resuscitation.
3
Correlate the disease process with potential electrolyte emergencies.
Necrotizing pancreatitis frequently causes hypocalcemia due to fat necrosis and saponification.
To anticipate necessary physical assessments, such as testing for the Chvostek sign (facial muscle twitching).

Key Concept

Concurrent management of ARDS, hypovolemic shock, and hypocalcemia in acute necrotizing pancreatitis.
Estimated Time:2m 0s
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Topics

Physiological Adaptation

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