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Difficulty: MediumPreoperative and Postoperative Care

An internal medicine consultation is requested for a 62-year-old male on his second day of recovery following an open partial colectomy for diverticulitis. The patient has a 40-pack-year smoking history and mild chronic obstructive pulmonary disease. He currently reports sharp abdominal pain, especially when taking a deep breath. His temperature is 38.6∘C38.6^{\circ}\text{C} (101.5∘F101.5^{\circ}\text{F}), blood pressure is 138/82 mmHg138/82\text{ mmHg}, pulse is 102/min102/\text{min}, and respirations are 22/min22/\text{min}. Pulse oximetry shows 91%91\% on room air. Physical examination reveals decreased breath sounds at the lung bases bilaterally, with no wheezing or crackles. The abdomen is tender near the incision but without rebound or guarding. The surgical incision is clean, dry, and intact. Which of the following are the most appropriate initial steps in the management of this patient's current condition? (Select 2 options)

  1. Encourage frequent use of an incentive spirometerAnswer
  2. Optimize the patient's incisional pain management regimenAnswer
  3. C
    Initiate empiric intravenous vancomycin and piperacillin-tazobactam
  4. D
    Administer systemic corticosteroids and nebulized bronchodilators
  5. E
    Perform a bedside opening of the abdominal incision

Answer

The correct steps are to encourage frequent use of an incentive spirometer and to optimize the patient's incisional pain management regimen.
This patient's clinical presentation on postoperative day 2—low-grade fever, mild hypoxemia, and decreased bibasilar breath sounds—is classic for atelectasis. This condition is particularly common following abdominal surgery, as incisional pain causes patients to take shallow breaths (splinting), leading to alveolar collapse. The most effective management strategy involves a two-pronged approach: actively recruiting collapsed alveoli through deep breathing exercises (using an incentive spirometer) and removing the barrier to deep breathing by optimizing incisional pain management. Both steps are essential; without adequate pain control, the patient will be unable to effectively use the incentive spirometer.

Step-by-Step Solution

1
Analyze the patient's presentation and postoperative timeline.
The patient has a low-grade fever, mild tachycardia, hypoxemia, and decreased bibasilar breath sounds on postoperative day (POD) 2.
Establishing the postoperative day is critical for narrowing the differential diagnosis of postoperative fever (the '5 Ws').
2
Correlate the physical exam findings with the timeline.
The findings are highly suggestive of atelectasis ('Wind'), which is the most common cause of fever on POD 1-2. The patient's shallow breathing due to abdominal pain (splinting) is exacerbating the condition.
Identifying the etiology prevents unnecessary testing and guides targeted therapy.
3
Determine the appropriate interventions.
Management of atelectasis includes pulmonary toilet (incentive spirometry, early ambulation) and adequate pain control to allow for deep breathing without severe splinting.
Both addressing the alveolar collapse and removing the barrier to deep breathing (pain) are necessary for effective resolution.

Key Concept

The most common cause of fever on postoperative days 1-2 is atelectasis. Management requires aggressive pulmonary hygiene, which often depends on optimizing postoperative analgesia to prevent shallow breathing.
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Topics

Preoperative and Postoperative Care

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