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Difficulty: MediumGeneral Internal Medicine

A 67-year-old female presents to an outpatient clinic complaining of progressively worsening shortness of breath over the last three days. She has a medical history of essential hypertension, hyperlipidemia, and a 45-pack-year smoking history. She reports increased chest tightness and wheezing but notes her daily cough remains productive of only minimal, clear sputum. She denies any fever, chills, orthopnea, or paroxysmal nocturnal dyspnea. Her medications include amlodipine, atorvastatin, and an albuterol inhaler. The temperature is 37.0°C (98.6°F), blood pressure is 154/90 mm Hg, pulse is 95/min, and respiratory rate is 22/min. Pulse oximetry reveals an oxygen saturation of 91% on room air. The jugular venous pressure is estimated at 5 cm H2O. Chest auscultation reveals a prolonged expiratory phase with widespread, high-pitched polyphonic wheezing bilaterally. No crackles or cardiac murmurs are heard. There is trace, chronic non-pitting edema of the lower extremities. Which of the following is the most appropriate next step in management?

  1. A
    Administer intravenous furosemide
  2. B
    Prescribe oral azithromycin
  3. Administer oral prednisone and nebulized ipratropium-albuterolAnswer
  4. D
    Obtain an arterial blood gas to calculate expected respiratory compensation
  5. E
    Order an urgent echocardiogram

Answer

Administer oral prednisone and nebulized ipratropium-albuterol
The correct answer involves treating the acute chronic obstructive pulmonary disease (COPD) exacerbation with systemic glucocorticoids and inhaled bronchodilators. The patient's presentation of progressive dyspnea, polyphonic wheezing, prolonged expiration, and a long smoking history strongly supports an acute exacerbation of COPD. Immediate management involves short-acting bronchodilators (such as albuterol and ipratropium) and systemic glucocorticoids (such as oral prednisone) to rapidly reduce airway inflammation and reverse bronchospasm. Antibiotics are correctly withheld because the patient's sputum remains clear, meaning she lacks the cardinal sign of increased sputum purulence required to justify antimicrobial therapy in this setting.

Step-by-Step Solution

1
Identify the primary clinical syndrome based on vital signs and physical examination.
The patient has progressive dyspnea, tachypnea, polyphonic wheezing, and a prolonged expiratory phase, which points to an acute exacerbation of chronic obstructive pulmonary disease (AECOPD).
Recognizing the hallmark signs of bronchospasm and airflow limitation is essential for directing initial therapy.
2
Differentiate between an AECOPD and acute decompensated heart failure.
The absence of elevated jugular venous pressure, pulmonary crackles, orthopnea, and paroxysmal nocturnal dyspnea makes heart failure highly unlikely.
Heart failure and COPD exacerbations can present with similar symptoms (dyspnea, wheezing) but require drastically different treatments.
3
Evaluate criteria for empiric antibiotic therapy in a COPD exacerbation.
The patient lacks increased sputum purulence or significant changes in sputum volume, so she does not meet the criteria for antibiotics.
Antibiotic stewardship principles dictate that antibiotics should only be given to AECOPD patients with specific cardinal symptoms indicating a likely bacterial infection.
4
Select the most appropriate initial pharmacologic therapy.
Systemic glucocorticoids (e.g., oral prednisone) and short-acting inhaled bronchodilators (e.g., ipratropium-albuterol) are chosen.
This combination rapidly reverses bronchospasm, decreases airway inflammation, and improves clinical outcomes in non-infectious COPD exacerbations.

Key Concept

Management of acute chronic obstructive pulmonary disease (COPD) exacerbations and avoiding inappropriate antibiotic use.
Estimated Time:1m 0s
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Topics

General Internal Medicine

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