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Difficulty: Very hardReduction of Risk Potential

A nurse is caring for a 45-year-old client who is 12 hours postoperative following an extensive small bowel resection for mesenteric ischemia. The client is intubated, receiving mechanical ventilation with a positive end-expiratory pressure (PEEP) of 10 cm H2OH_2O, and has a central venous catheter. The nurse is evaluating the client to reduce the risk of potential complications. Which of the following findings or observed nursing actions indicate an imminent risk for physiological decompensation or client harm? Select all that apply.

  1. The client's arterial blood gas reveals a pH of 7.28, PaCO2PaCO_2 of 31 mm Hg, and HCO3−HCO_3^- of 14 mEq/L, and the nurse plans to decrease the mechanical ventilation rate.Answer
  2. The client exhibits a gradual increase in heart rate from 88 to 122 beats per minute alongside a narrowing pulse pressure from 45 mm Hg to 22 mm Hg.Answer
  3. C
    The nurse maintains the head of the bed elevated at 35 degrees and ensures the client's neck is kept in neutral alignment.
  4. The nurse places the client in a flat, supine position and initiates the gastrointestinal assessment by deeply palpating the surgical site.Answer
  5. E
    The client's abdominal surgical wound drain collects 40 mL of serosanguineous fluid over a 4-hour period.
  6. F
    The client's arterial blood gas shows a PaO2PaO_2 of 85 mm Hg and an oxygen saturation (SaO2SaO_2) of 95% on a fraction of inspired oxygen (FiO2FiO_2) of 0.40.

Answer

The correct findings or actions that indicate a risk for harm include: planning to decrease the ventilation rate in the presence of metabolic acidosis, observing a narrowing pulse pressure with tachycardia, and placing the client flat while palpating the abdomen before auscultating.
The correct options represent situations where either an impending complication is occurring or a nursing action will directly cause harm. A narrowing pulse pressure with tachycardia is a classic early indicator of shock, demanding immediate intervention. The ABG results (low pH, low HCO3−HCO_3^-, low PaCO2PaCO_2) reveal metabolic acidosis with partial respiratory compensation; reducing the respiratory rate would trap CO2 and worsen the acidosis. Finally, placing a mechanically ventilated client flat increases the risk of ventilator-associated pneumonia and aspiration, while palpating the abdomen before auscultating disrupts the assessment by artificially stimulating bowel sounds.

Step-by-Step Solution

1
Analyze the client's current clinical status and risk profile.
The client is post-abdominal surgery, mechanically ventilated, and at high risk for shock, respiratory compromise, and ventilator-associated pneumonia (VAP).
Establishing the clinical context is essential to accurately evaluate the safety and priority of assessment findings and nursing interventions.
2
Evaluate the arterial blood gas (ABG) parameters and proposed interventions.
The ABG shows partially compensated metabolic acidosis. Decreasing the ventilation rate is dangerous because it would remove the respiratory compensation.
Mechanical ventilation adjustments must align with the acid-base disturbance to prevent lethal acidemia.
3
Interpret the vital sign trends for signs of hemodynamic instability.
A rising heart rate combined with a narrowing pulse pressure indicates early compensatory shock.
Identifying subtle cardiovascular changes allows for early intervention before irreversible organ damage occurs.
4
Assess the sequence and positioning of the physical examination.
Flat positioning increases aspiration risk, and palpating before auscultation alters bowel sounds.
Proper sequencing and safe positioning are fundamental to accurate assessment and risk reduction.
5
Differentiate critical risks from expected postoperative findings and standard care.
Head of bed elevation, moderate serosanguineous drainage, and normal oxygenation levels are expected or protective, not risky.
Distinguishing between expected clinical courses and impending complications prevents inappropriate interventions.

Key Concept

Early recognition of shock, accurate acid-base interpretation, and adherence to evidence-based safety protocols (such as correct positioning and assessment sequencing) are critical to reducing the risk of life-threatening complications in critically ill postoperative clients.
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Reduction of Risk Potential

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