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Difficulty: MediumReduction of Risk Potential

A 56-year-old client with a mechanical small bowel obstruction has been receiving continuous high wall nasogastric (NG) suction for the past 3 days. The client is currently lethargic, reports severe generalized muscle weakness, and has a respiratory rate of 10 breaths/min. An arterial blood gas (ABG) panel reveals a pH of 7.54, PaCO2PaCO_2 of 48 mmHg, and HCO3−HCO_3^- of 34 mEq/L. The client is currently resting in a flat, supine position. Which immediate action should the nurse take to reduce the client's risk for further physiological decompensation?

  1. Elevate the head of the bed to at least 30 degrees, temporarily pause the nasogastric suction, and notify the healthcare provider.Answer
  2. B
    Maintain the client in a flat, supine position to reduce intra-abdominal pressure and promote comfort.
  3. C
    Prepare to administer an intravenous bolus of sodium bicarbonate to quickly reverse the physiological acid-base imbalance.
  4. D
    Perform an immediate abdominal assessment by percussing and deeply palpating all four quadrants before auscultating bowel sounds.

Answer

The correct action is to elevate the head of the bed to at least 30 degrees, temporarily pause the nasogastric suction, and notify the healthcare provider.
The client is experiencing partially compensated metabolic alkalosis caused by the prolonged depletion of gastric acid and potassium via the NG tube. The hypoventilation (respiratory rate of 10 breaths/min) is a compensatory mechanism to retain CO2CO_2 and lower the blood pH. Furthermore, a lethargic client lying flat with an active NG tube is at imminent risk for aspiration. The correct action addresses both immediate threats: elevating the head of the bed protects the airway, while temporarily pausing the suction stops the ongoing acid and electrolyte loss pending provider orders.

Step-by-Step Solution

1
Analyze the arterial blood gas (ABG) and clinical findings to determine the primary physiological imbalance.
The ABG shows a pH of 7.54 (alkalosis) and HCO3−HCO_3^- of 34 mEq/L (alkalosis), indicating metabolic alkalosis. The PaCO2PaCO_2 of 48 mmHg and low respiratory rate (10 breaths/min) represent partial respiratory compensation.
Accurate ABG interpretation is required to identify that the continuous removal of gastric acid (hydrochloric acid) has caused severe metabolic alkalosis.
2
Evaluate the physical assessment data and the client's current positioning.
The client is lethargic and lying flat with an active NG tube, creating a severe aspiration risk. The muscle weakness indicates hypokalemia, a common complication of excessive gastric suctioning.
Identifying immediate physical safety risks allows the nurse to prioritize airway protection.
3
Determine the priority nursing interventions to reduce risk.
The nurse must elevate the head of the bed to protect the airway, pause the offending therapy (NG suction), and collaborate with the provider for fluid and electrolyte replacement.
Independent nursing actions must prioritize airway safety and stopping active harm before receiving further medical orders.

Key Concept

Mitigating complications of continuous nasogastric suction, including metabolic alkalosis, hypokalemia, and aspiration risk.
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Topics

Reduction of Risk Potential

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