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Difficulty: EasyPulmonary and Critical Care

A 65-year-old man presents to the emergency department reporting a 2-day history of worsening dyspnea, increased cough, and a change in his sputum from clear to yellow-green. He has a 40-pack-year smoking history and a known diagnosis of chronic obstructive pulmonary disease. His current medications include a daily tiotropium inhaler and albuterol as needed. Vital signs show a temperature of 37.8°C (100.0°F), blood pressure of 145/88 mm Hg, pulse of 105/min, and respiratory rate of 24/min. Pulse oximetry reveals an oxygen saturation of 87% on ambient air. Physical examination is notable for a prolonged expiratory phase with diffuse bilateral wheezing. Cardiac examination shows a regular rate and rhythm without murmurs, rubs, or gallops. There is no jugular venous distention, and the lower extremities are free of edema.

Which of the following interventions are appropriate for the initial management of this patient? (Select all that apply)

  1. Inhaled albuterol and ipratropium therapyAnswer
  2. Short-course systemic corticosteroid therapyAnswer
  3. Supplemental oxygen titrated to 88% to 92% saturationAnswer
  4. D
    Intravenous bolus of a loop diuretic
  5. E
    Empiric therapy with meropenem and vancomycin

Answer

The appropriate initial management includes inhaled albuterol and ipratropium therapy, short-course systemic corticosteroid therapy, and supplemental oxygen titrated to 88% to 92% saturation.
The patient is experiencing an acute exacerbation of chronic obstructive pulmonary disease, defined by worsening dyspnea, increased sputum volume, and increased sputum purulence. The cornerstone of initial management includes short-acting bronchodilators to relieve bronchospasm, and systemic glucocorticoids to decrease airway inflammation and shorten recovery time. Additionally, because the patient is hypoxemic (oxygen saturation 87%), supplemental oxygen is indicated. For patients with chronic obstructive pulmonary disease, the target oxygen saturation is 88% to 92% to prevent worsening hypercapnia.

Step-by-Step Solution

1
Diagnose the acute condition based on the clinical presentation.
The patient is experiencing an acute exacerbation of chronic obstructive pulmonary disease.
The patient has a known history of chronic obstructive pulmonary disease and presents with the cardinal symptoms of an exacerbation: increased dyspnea, increased cough, and increased sputum purulence.
2
Identify the standard pharmacological interventions for an acute exacerbation.
Standard therapy includes short-acting bronchodilators, systemic corticosteroids, and targeted antibiotics.
Bronchodilators relieve bronchospasm, corticosteroids reduce airway inflammation, and antibiotics treat potential bacterial triggers.
3
Determine the appropriate oxygen therapy goal.
Target oxygen saturation should be 88% to 92%.
In chronic obstructive pulmonary disease, excessive oxygen can worsen hypercapnia due to altered ventilation-perfusion matching and decreased hypoxic respiratory drive.
4
Rule out other potential diagnoses and inappropriate treatments.
Exclude heart failure and avoid overly broad-spectrum antibiotics.
The absence of jugular venous distention and edema makes heart failure less likely, so loop diuretics are not indicated. Standard antibiotics like macrolides or cephalosporins should be used rather than unnecessarily broad-spectrum agents.

Key Concept

Acute exacerbation of chronic obstructive pulmonary disease is managed with short-acting bronchodilators, systemic glucocorticoids, antibiotics (if cardinal symptoms are present), and controlled supplemental oxygen targeting a saturation of 88-92%.
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Topics

Pulmonary and Critical Care

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