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Difficulty: MediumPreoperative and Postoperative Care

During morning rounds, the surgical team evaluates a 67-year-old man who is recovering from an elective open abdominal aortic aneurysm repair performed 48 hours ago. The overnight nurse reported a single temperature spike. The patient states he feels generally well, though he has mild pain at the surgical site when coughing. His past medical history is significant for chronic obstructive pulmonary disease and hypertension. Current vital signs show a temperature of 38.6°C (101.5°F), blood pressure of 138/86 mm Hg, heart rate of 94/min, and respiratory rate of 18/min. Oxygen saturation is 94% on room air. Auscultation of the chest reveals decreased breath sounds at both lung bases and faint end-expiratory wheezes. The abdomen is soft, and the midline laparotomy incision demonstrates healthy granulation without fluctuance, excessive erythema, or purulence. The indwelling urinary catheter was discontinued yesterday, and the patient reports normal, painless urination. Which of the following is the most appropriate next step in management?

  1. Continue current care with incentive spirometry and early ambulationAnswer
  2. B
    Obtain a chest radiograph and send sputum for culture
  3. C
    Initiate empiric therapy with intravenous piperacillin-tazobactam
  4. D
    Perform bilateral venous duplex ultrasonography of the lower extremities
  5. E
    Administer a dose of intravenous furosemide

Answer

Continue current care with incentive spirometry and early ambulation
The correct answer emphasizes supportive care. Fever in the first 24 to 48 hours after surgery is common and is most frequently caused by the release of inflammatory cytokines (e.g., IL-1, IL-6, TNF-alpha) due to surgical tissue trauma. This is often accompanied by atelectasis, which manifests as decreased breath sounds at the lung bases. Because this is a physiologic, non-infectious response, the most appropriate management is reassurance, adequate pain control, early ambulation, and incentive spirometry to optimize pulmonary function. No specific diagnostic testing or empiric antibiotics are indicated unless the patient exhibits hemodynamic instability or specific focal signs of early severe infection (such as necrotizing fasciitis or an anastomotic leak), neither of which are present in this scenario.

Step-by-Step Solution

1
Analyze the timing of the postoperative fever.
The patient's fever occurs 48 hours after surgery (Postoperative Day 2).
Timing is the most critical factor in determining the likely etiology of a postoperative fever.
2
Correlate the timeline with the physical examination findings.
The patient has bibasilar decreased breath sounds (consistent with atelectasis) and a normal wound appearance. There are no signs of UTI or DVT.
Clinical findings must support the suspected diagnosis. Early fever (days 1-2) is typically due to inflammatory cytokine release from tissue trauma and concurrent atelectasis ('Wind').
3
Select the appropriate management strategy for early, non-infectious postoperative fever.
No aggressive infectious workup or antimicrobial therapy is required. Supportive care is indicated.
Atelectasis and cytokine-driven fevers resolve with ambulation, chest physiotherapy, and continued observation.

Key Concept

Fever within the first 48 hours after major surgery is usually non-infectious (driven by inflammatory cytokines and atelectasis) and should be managed supportively with incentive spirometry and early ambulation.
Estimated Time:1m 0s
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Topics

Preoperative and Postoperative Care

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