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Difficulty: EasyPulmonary and Critical Care

Emergency medical services bring a patient to the resuscitation bay due to progressive respiratory distress over the past two days. The patient, who has a 50-pack-year smoking history, is unable to speak in full sentences. Initial assessment reveals a respiratory rate of 28/min and an oxygen saturation of 88% on room air. Auscultation of the chest reveals distant breath sounds with prolonged expiration and bilateral end-expiratory wheezing. Cardiovascular examination shows a regular tachycardia without any murmurs, gallops, or jugular venous distention. The lower extremities are warm and without edema. Bedside chest radiography shows hyperlucent lung fields and flattened diaphragms. Which of the following is the most appropriate initial pharmacological intervention for this patient?

  1. A
    Intravenous furosemide
  2. Inhaled albuterol and oral prednisoneAnswer
  3. C
    Intravenous piperacillin-tazobactam
  4. D
    Intravenous metoprolol
  5. E
    Intravenous sodium bicarbonate

Answer

The most appropriate initial intervention is inhaled albuterol and oral prednisone.
The patient's clinical presentation—including a heavy smoking history, prolonged expiration, bilateral wheezing, and radiographic evidence of hyperinflation—is a classic manifestation of an acute exacerbation of chronic obstructive pulmonary disease (COPD). The lack of jugular venous distention, peripheral edema, or pulmonary vascular congestion strongly rules against heart failure. For a COPD exacerbation, the most appropriate initial pharmacological intervention is the administration of inhaled short-acting bronchodilators (such as albuterol, often combined with ipratropium) and systemic corticosteroids (such as oral prednisone). These medications target the underlying bronchospasm and airway inflammation.

Step-by-Step Solution

1
Identify the primary clinical syndrome.
The patient has progressive dyspnea, a heavy smoking history, wheezing, hyperlucent lungs, and no signs of volume overload, indicating an acute exacerbation of chronic obstructive pulmonary disease (COPD).
Recognizing the pattern of obstructive airway disease is essential to differentiate it from other causes of respiratory distress like acute decompensated heart failure.
2
Determine the standard of care for the identified condition.
The cornerstone of treatment for an acute COPD exacerbation includes short-acting inhaled bronchodilators, systemic corticosteroids, and oxygen supplementation.
These therapies rapidly reduce airway resistance, decrease inflammation, and correct life-threatening hypoxemia.
3
Evaluate the distractors against the clinical evidence.
Therapies for heart failure (furosemide), inappropriately broad antibiotics, and contra-indicated medications (beta-blockers) can be ruled out.
Avoiding interventions that do not match the pathophysiology prevents iatrogenic harm.

Key Concept

The initial pharmacological management of an acute exacerbation of COPD primarily involves the administration of short-acting bronchodilators and systemic corticosteroids.
Estimated Time:1m 0s
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Topics

Pulmonary and Critical Care

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