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Difficulty: MediumPhysiological Adaptation

The nurse receives the shift report for four clients on a vascular and pulmonary step-down unit. Which client requires the most immediate assessment by the nurse?

  1. A client 12 hours postoperative following an abdominal aortic aneurysm repair who has a urine output of 20 mL over the past hour and a narrowing pulse pressure.Answer
  2. B
    A client with severe chronic obstructive pulmonary disease whose latest arterial blood gas results show a pH of 7.36 and a PaCO2 of 56 mm Hg.
  3. C
    A client receiving intravenous antibiotics for a severe urinary tract infection who has a temperature of 38.4°C (101.1°F) and a heart rate of 92 beats per minute.
  4. D
    A client with chronic right-sided heart failure who reports a 1.5 kg (3.3 lb) weight gain over 48 hours and exhibits 2+ bilateral pedal edema.

Answer

The client 12 hours postoperative following an abdominal aortic aneurysm repair who has a urine output of 20 mL over the past hour and a narrowing pulse pressure requires the most immediate assessment.
The correct answer identifies the client exhibiting early, subtle signs of physiological decompensation. A urine output of less than 30 mL/hr and a narrowing pulse pressure are critical indicators that the body is attempting to adapt to a severe fluid volume deficit (likely internal hemorrhage from the AAA repair site). This represents an acute circulation crisis requiring immediate rapid response.

Step-by-Step Solution

1
Analyze the clinical presentation of the postoperative client.
Identified low urine output and a narrowing pulse pressure in a high-risk surgical client.
These are classic early indicators of compensatory shock and decreased organ perfusion, possibly due to graft failure.
2
Evaluate the respiratory client's ABG results.
Identified a normal pH (7.36) with an elevated PaCO2 (56 mm Hg), indicating fully compensated respiratory acidosis.
This is a chronic, expected physiological adaptation for severe COPD, representing stability rather than acute decompensation.
3
Review the remaining clients' clinical data.
Identified expected findings for an active infection (fever, mild tachycardia) and expected chronic findings for right-sided heart failure (edema, weight gain).
To confirm that their conditions, while requiring medical management, do not pose an immediate threat to life.
4
Prioritize the clients based on the ABCs (Airway, Breathing, Circulation) and risk for immediate mortality.
The postoperative client is selected as the highest priority.
Acute hemorrhage or hypovolemic shock represents a critical failure of circulation that will rapidly become fatal if left unaddressed.

Key Concept

Prioritization of early shock manifestations over chronic physiological adaptations.
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Topics

Physiological Adaptation

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