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Difficulty: MediumPreoperative and Postoperative Care

A 72-year-old man is evaluated for severe shortness of breath on postoperative day 3 following an open left hemicolectomy for colon cancer. The patient has a history of hypertension, coronary artery disease, and chronic obstructive pulmonary disease. During the operation and the first 24 hours postoperatively, he received a total of 6 liters of isotonic crystalloid for resuscitation. He was recovering well until this morning when he developed worsening dyspnea, orthopnea, and a mild cough. His temperature is 37.8°C (100.0°F), blood pressure is 162/94 mmHg, pulse is 108/min, and respirations are 26/min. Oxygen saturation is 89% on room air. Physical examination reveals distended jugular veins when sitting at 45 degrees. Lung auscultation demonstrates bilateral crackles extending to the mid-lung fields and expiratory wheezing. Cardiac examination reveals a regular tachycardia with a prominent S3 gallop. The abdomen is soft and nondistended, and the surgical incision is intact. Which of the following is the most appropriate next step in the management of this patient?

  1. Administer intravenous furosemideAnswer
  2. B
    Administer inhaled albuterol and intravenous methylprednisolone
  3. C
    Perform computed tomography pulmonary angiography
  4. D
    Obtain blood cultures and start empiric vancomycin and piperacillin-tazobactam
  5. E
    Initiate therapeutic anticoagulation with intravenous heparin

Answer

Administer intravenous furosemide
The correct response is to administer intravenous furosemide. This patient is experiencing acute decompensated heart failure (ADHF) characterized by pulmonary edema and volume overload. During major abdominal surgery, patients often receive large volumes of intravenous crystalloids to maintain hemodynamics, much of which shifts into the interstitial space ('third-spacing'). Typically, around postoperative day 2 or 3, this fluid mobilizes back into the intravascular space. In patients with underlying structural heart disease (e.g., coronary artery disease), this sudden increase in preload can precipitate ADHF. The classic findings include dyspnea, orthopnea, elevated jugular venous pressure, bilateral crackles, and an S3 gallop. The wheezing in this context is termed 'cardiac asthma' and results from peribronchial edema. The definitive initial management is aggressive diuresis with intravenous loop diuretics like furosemide.

Step-by-Step Solution

1
Analyze the patient's presentation and surgical timeline.
The patient is on postoperative day 3 after receiving 6 liters of fluids, now presenting with dyspnea, orthopnea, JVD, crackles, wheezing, and an S3 gallop.
Identifying the timing of fluid shifts (typically POD 3) and the specific cardiac physical exam findings is essential to differentiate the cause of respiratory distress.
2
Differentiate between acute decompensated heart failure (ADHF) and COPD exacerbation.
Despite the history of COPD and presence of wheezing, the S3 gallop and JVD definitively point to volume overload (ADHF) rather than isolated bronchospasm.
Wheezing can occur in heart failure ('cardiac asthma') due to peribronchial edema, which often misleads clinicians.
3
Determine the most appropriate next step in management.
Administer intravenous furosemide.
Rapid diuresis is the standard of care for acute pulmonary edema due to fluid overload.

Key Concept

Patients who receive massive intraoperative fluid resuscitation are at high risk for acute decompensated heart failure (volume overload) on postoperative day 2 or 3, when third-spaced fluids mobilize back into the intravascular space.
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Topics

Preoperative and Postoperative Care

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