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Zorluk: KolayCardiovascular System

A retired 62-year-old teacher visits an urgent care clinic reporting a one-week history of progressively worsening difficulty breathing. She notes a new, persistent cough and states she has been forced to sleep in her living room recliner for the past three nights to avoid feeling suffocated when lying flat. Her medical background is significant for well-controlled type 2 diabetes mellitus and long-standing hypertension. She smoked cigarettes briefly in her twenties but quit over 30 years ago.

Current vital signs include a temperature of 37.0°C (98.6°F), blood pressure of 162/94 mmHg, heart rate of 92/min, and respiratory rate of 22/min. Pulse oximetry displays 94% on ambient air.

During the physical examination, the physician observes distended jugular veins when the patient is seated at a 45-degree angle. Auscultation of the posterior lung fields reveals prominent bilateral basilar crackles. Symmetrical, pitting edema is present in both ankles.

A point-of-care chest radiograph demonstrates an enlarged cardiac silhouette and bilateral pulmonary vascular congestion. Laboratory studies, including a complete blood count, basic metabolic panel, and a thyroid-stimulating hormone (TSH) level of 1.8 mU/L, are within normal limits.

What is the most appropriate initial pharmacologic therapy for this patient?

  1. A
    Inhaled albuterol
  2. B
    Oral azithromycin
  3. Intravenous furosemideCevap
  4. D
    Oral prednisone
  5. E
    Oral levothyroxine

Cevap

Intravenous furosemide
This patient presents with classic signs and symptoms of acute decompensated heart failure (ADHF), including orthopnea (necessitating sleeping in a recliner), jugular venous distention, basilar crackles, and bilateral pitting edema. The chest radiograph confirms cardiomegaly and pulmonary vascular congestion. In patients presenting with acute volume overload secondary to heart failure, the most appropriate initial therapy is the administration of a loop diuretic, such as intravenous furosemide. This medication inhibits the Na-K-2Cl cotransporter in the thick ascending limb of the loop of Henle, leading to profound diuresis, a reduction in intravascular volume, decreased ventricular preload, and rapid symptomatic relief of pulmonary congestion.

Adım Adım Çözüm

1
Identify the primary clinical syndrome based on the patient's history and physical examination.
The patient exhibits orthopnea, jugular venous distention, basilar crackles, peripheral edema, and radiographic evidence of cardiomegaly and pulmonary congestion.
These findings collectively establish a diagnosis of acute decompensated heart failure (ADHF) characterized by volume overload.
2
Determine the most appropriate initial management for this specific condition.
Loop diuretics (such as furosemide) are selected as the first-line intervention.
Loop diuretics rapidly induce diuresis, decrease intravascular volume, reduce ventricular preload, and rapidly alleviate the symptoms of pulmonary congestion.

Anahtar Kavram

Diagnosis and initial management of acute decompensated heart failure.
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Konular

Cardiovascular System

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