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Difficulty: EasyPreoperative and Postoperative Care

A 28-year-old man is evaluated on the surgical floor for an elevated temperature. He is currently on his first postoperative day following an open reduction and internal fixation of a closed right femur fracture sustained in a motor vehicle collision. The patient reports expected mild pain at the surgical site but denies shortness of breath, cough, dysuria, or calf pain. His temperature is 38.3°C (100.9°F), blood pressure is 122/78 mmHg, heart rate is 88/min, and respiratory rate is 14/min. Pulse oximetry shows 98% on room air. Physical examination reveals a clean, dry, and intact surgical dressing with no surrounding erythema or excessive swelling. The lungs are clear to auscultation bilaterally. Which of the following is the most appropriate next step in the management of this patient?

  1. Observation and administration of acetaminophenAnswer
  2. B
    Initiation of empiric broad-spectrum antibiotics
  3. C
    Chest radiograph
  4. D
    Urinalysis and urine culture
  5. E
    Lower extremity venous Doppler ultrasound

Answer

Observation and administration of acetaminophen
The correct answer is observation and administration of acetaminophen. Postoperative fever (defined as temperature > 38.0°C or 100.4°F) is exceedingly common within the first 24 to 48 hours following major surgical procedures, such as an open reduction and internal fixation. During this early period, the fever is predominantly mediated by the release of inflammatory cytokines (e.g., interleukin-1, interleukin-6, tumor necrosis factor-alpha) triggered by the surgical tissue trauma itself. If the patient is hemodynamically stable and lacks focal signs of infection (such as a productive cough, dysuria, or marked wound erythema), this early pyrexia is considered a normal, expected physiologic response. Routine diagnostic testing (often referred to as a 'fever pan-culture') and empiric antibiotic therapy are unnecessary and potentially harmful. Management consists of observation, reassurance, and antipyretics to maintain patient comfort.

Step-by-Step Solution

1
Analyze the timing of the patient's fever.
The fever is occurring on postoperative day 1 (within 24 hours of surgery).
Timing is the most critical factor in determining the likely etiology of a postoperative fever.
2
Correlate the fever timing with the clinical presentation.
The patient has no focal infectious symptoms (no cough, clear lungs, no dysuria) and a normal physical exam.
Early postoperative fevers without focal signs are almost always due to the physiologic release of inflammatory cytokines (IL-1, IL-6, TNF-alpha) secondary to tissue trauma.
3
Determine the appropriate management strategy based on the etiology.
Symptomatic management with antipyretics and observation is indicated.
Since this is a normal physiologic response and there is no evidence of an underlying infection, diagnostic testing or antibiotic therapy is not required.

Key Concept

Fever within the first 24 to 48 hours after surgery is typically a physiologic response to tissue trauma mediated by cytokines, and in the absence of focal findings, should be managed with observation and antipyretics.
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Topics

Preoperative and Postoperative Care

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