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Difficulty: MediumPreoperative and Postoperative Care

A 72-year-old man is assessed in the intensive care unit 6 hours after undergoing an open exploratory laparotomy and lysis of adhesions for a small bowel obstruction. The anesthesia records note that he received 4.5 liters of lactated Ringer solution during the operation due to transient hypotension. His past medical history includes chronic obstructive pulmonary disease, hypertension, and a myocardial infarction 3 years ago. He now complains of rapidly worsening shortness of breath. His temperature is 38.1°C (100.6°F), blood pressure is 158/94 mm Hg, pulse is 114/min, and respiratory rate is 26/min. Pulse oximetry shows 88% on room air. Physical examination demonstrates distended jugular veins. Lung auscultation reveals bibasilar crackles and diffuse expiratory wheezing. Cardiac auscultation reveals a rapid, regular rhythm with a distinct third heart sound (S3). The surgical incision is intact without erythema or drainage. Which of the following are the most appropriate next steps in the management of this patient? (Select all that apply)

  1. Initiate intravenous diuresis with furosemideAnswer
  2. Provide supplemental oxygen with noninvasive positive pressure ventilationAnswer
  3. C
    Initiate therapy with systemic glucocorticoids
  4. D
    Start empiric treatment with broad-spectrum intravenous antibiotics
  5. E
    Obtain a computed tomography scan of the abdomen and pelvis

Answer

The most appropriate next steps are to initiate intravenous diuresis with furosemide and provide supplemental oxygen with noninvasive positive pressure ventilation.
The patient is experiencing acute decompensated heart failure caused by significant intraoperative fluid administration, exacerbated by his underlying cardiovascular disease. The classic signs of volume overload (distended jugular veins, S3 gallop, and pulmonary crackles) mandate immediate treatment with a loop diuretic to remove excess fluid. Concurrently, noninvasive positive pressure ventilation is highly effective in acute cardiogenic pulmonary edema to maintain airway patency, improve gas exchange, and decrease cardiac workload.

Step-by-Step Solution

1
Evaluate the vital signs and physical examination findings in the context of the recent surgery and large volume of intravenous fluids administered.
The patient is presenting with hypoxia, tachycardia, distended jugular veins, bibasilar crackles, and an S3 gallop shortly after receiving 4.5 liters of crystalloid fluid.
Identifying the primary physiological derangement causing acute postoperative dyspnea is required to direct appropriate therapy.
2
Differentiate between cardiogenic and pulmonary causes of dyspnea based on the physical examination.
The presence of distended jugular veins, crackles, and an S3 gallop strongly indicates acute decompensated heart failure due to volume overload, rather than a COPD exacerbation.
Patients with a history of COPD and cardiac disease can present with wheezing in both conditions, but systemic volume overload signs point directly to a cardiac etiology.
3
Select the appropriate acute interventions to manage the identified condition.
Loop diuretics and ventilatory support are indicated.
Diuretics reduce intravascular volume, while noninvasive positive pressure ventilation improves oxygenation and decreases both cardiac preload and afterload.

Key Concept

Acute decompensated heart failure can rapidly develop in the immediate postoperative period due to aggressive intraoperative fluid resuscitation, particularly in patients with underlying cardiovascular disease. It often presents with dyspnea, hypoxia, distended jugular veins, crackles, and an S3 gallop. The primary management includes aggressive volume reduction with loop diuretics and ventilatory support such as noninvasive positive pressure ventilation.
Estimated Time:1m 30s
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Topics

Preoperative and Postoperative Care

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