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Difficulty: Very hardReduction of Risk Potential

A nurse is caring for a 5858-year-old client who is 1212 hours post-operative following a partial gastrectomy and Billroth II anastomosis. The client has a nasogastric (NG) tube set to low continuous wall suction and is receiving continuous total parenteral nutrition (TPN) via a central venous catheter. Which of the following assessment findings or planned nursing actions indicate an increased risk for complications and require immediate intervention? Select all that apply.

  1. An arterial blood gas (ABG) analysis revealing a pH of 7.497.49, a PaCO2\text{PaCO}_2 of 45 mm Hg45\text{ mm Hg}, and an HCO3−\text{HCO}_3^- of 32 mEq/L32\text{ mEq/L}.Answer
  2. The nurse plans to administer a prescribed dose of intravenous (IV) phenytoin through the Y-site port of the TPN infusion line.Answer
  3. The client's pulse pressure has narrowed from 45 mm Hg45\text{ mm Hg} to 20 mm Hg20\text{ mm Hg} over the past hour, accompanied by a heart rate increase from 8888 to 112 bpm112\text{ bpm}.Answer
  4. D
    The nurse elevates the head of the client's bed to a 4545-degree semi-Fowler's position to support ventilation and prevent aspiration.
  5. E
    The nurse completes the abdominal assessment by auscultating all four quadrants for bowel sounds before proceeding to gentle palpation.
  6. F
    The drainage in the NG tube collection canister has transitioned from bright red to a dark brownish-red color, with 50 mL50\text{ mL} collected over the last 44 hours.

Answer

The findings and actions requiring immediate intervention are the ABG indicating metabolic alkalosis, the planned administration of IV phenytoin through a TPN line, and the narrowing pulse pressure accompanied by tachycardia.
The correct answers identify critical physiological derangements or dangerous nursing missteps that increase the client's risk for severe complications. An ABG with a high pH (7.497.49) and high HCO3−\text{HCO}_3^- (32 mEq/L32\text{ mEq/L}) indicates metabolic alkalosis, a dangerous complication of prolonged gastric acid loss from NG suctioning that requires fluid and electrolyte correction. Administering IV phenytoin through a TPN line is contraindicated; TPN requires a dedicated line, and phenytoin is highly incompatible with most fluids, risking severe precipitation and embolism. A narrowing pulse pressure combined with tachycardia is a subtle but critical early indicator of hypovolemic or hemorrhagic shock, necessitating immediate fluid resuscitation before overt hypotension occurs.

Step-by-Step Solution

1
Analyze the ABG values and NG tube context.
The client has uncompensated metabolic alkalosis (pH 7.497.49, HCO3−\text{HCO}_3^- 32 mEq/L32\text{ mEq/L}).
Prolonged NG suction removes stomach acid, causing a dangerous systemic alkalotic state that requires immediate correction, thus warranting intervention.
2
Evaluate the IV medication administration plan.
IV phenytoin is highly incompatible with TPN.
Administering phenytoin via the TPN line risks severe precipitation and central line occlusion or embolism, necessitating a dedicated line and immediate intervention to stop the planned action.
3
Assess the hemodynamic trends.
The pulse pressure has significantly narrowed (from 4545 to 20 mm Hg20\text{ mm Hg}) with accompanying tachycardia.
A narrowing pulse pressure is a classic early, subtle indicator of impending shock (hypovolemic or hemorrhagic), requiring immediate intervention before frank hypotension develops.
4
Evaluate the post-operative positioning, assessment sequence, and NG drainage.
Semi-Fowler's positioning, auscultating before palpating, and dark brownish-red drainage at 1212 hours post-op are all expected, appropriate findings.
Recognizing expected clinical progression prevents inappropriate interventions and allows focus on true physiological deterioration.

Key Concept

Reduction of Risk Potential: Recognizing Subtle Decompensation and Preventing Iatrogenic Complications
Estimated Time:2m 0s
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Reduction of Risk Potential

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