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Zorluk: OrtaCardiovascular System

A 65-year-old retired factory worker presents to an urgent care center complaining of severe shortness of breath and a persistent cough that has progressively worsened over the past 3 days. He has a 35-pack-year smoking history and was diagnosed with essential hypertension a decade ago. The patient reports that he has been sleeping in a recliner because lying flat in bed causes a sudden choking sensation. His temperature is 37.1°C (98.8°F), blood pressure is 172/96 mm Hg, heart rate is 112/min, and respiratory rate is 26/min. Oxygen saturation is 88% on ambient air. Physical examination reveals markedly distended jugular veins when the patient is seated upright. Lung auscultation demonstrates diffuse expiratory wheezes and fine crackles at both lung bases. Cardiac auscultation reveals a regular, rapid rhythm with a distinct low-frequency sound occurring just after S2. Which of the following is the most appropriate initial pharmacologic therapy for this patient's acute symptoms?

  1. Intravenous torsemideCevap
  2. B
    Nebulized ipratropium and oral dexamethasone
  3. C
    Oral azithromycin and cefuroxime
  4. D
    Intravenous metoprolol tartrate
  5. E
    Intravenous diltiazem

Cevap

Intravenous torsemide
The correct answer is the administration of an intravenous loop diuretic, such as torsemide. The patient's presentation of progressive dyspnea, orthopnea, elevated jugular venous pressure, bibasilar crackles, and a third heart sound (S3) strongly indicates acute decompensated heart failure (ADHF). The diffuse wheezing heard on auscultation represents 'cardiac asthma,' which occurs when fluid accumulates in the peribronchial interstitium, leading to airway narrowing that mimics an obstructive pulmonary process. The mainstay of initial therapy for ADHF with volume overload is rapid preload reduction, which is most effectively achieved with intravenous loop diuretics.

Adım Adım Çözüm

1
Analyze the patient's respiratory symptoms and risk factors.
The patient has dyspnea, orthopnea (sleeping in a recliner), a cough, and wheezing. He has a smoking history and hypertension.
To form an initial differential diagnosis that includes both primary pulmonary (COPD exacerbation, pneumonia) and cardiac (heart failure) etiologies.
2
Evaluate the physical examination findings to differentiate the etiology.
The exam shows jugular venous distention, bibasilar crackles, and an S3 gallop (low-frequency sound after S2).
These specific signs point to left and right ventricular volume overload, effectively ruling out a primary obstructive lung disease as the main cause of the acute presentation.
3
Select the most appropriate initial management for the confirmed diagnosis.
The diagnosis is acute decompensated heart failure (ADHF) presenting with cardiac asthma. The next best step is preload reduction with an intravenous loop diuretic.
Loop diuretics (e.g., torsemide, furosemide, bumetanide) rapidly diurese the patient and provide venodilation, resolving pulmonary edema.

Anahtar Kavram

Differentiating acute decompensated heart failure (ADHF) from COPD exacerbation and initiating appropriate preload reduction therapy.
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Konular

Cardiovascular System

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