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Zorluk: KolayCardiovascular System

A primary care physician is evaluating a 68-year-old man who presents to an urgent care clinic with progressively worsening shortness of breath over the past 48 hours. The patient states he has been waking up in the middle of the night feeling as though he is suffocating and has required sleeping in a recliner chair. His past medical history is notable for essential hypertension, ischemic heart disease, and a 40-pack-year history of cigarette smoking. Current medications include daily aspirin, lisinopril, and atorvastatin. Vital signs show a temperature of 37.1 C (98.8 F), blood pressure of 158/92 mm Hg, heart rate of 108/min, and respiratory rate of 24/min. Oxygen saturation is 91% on ambient air. Physical examination reveals distended jugular veins when sitting upright. Cardiac auscultation demonstrates a regular tachycardia with a distinct third heart sound (S3). Lung auscultation yields bilateral crackles at the posterior lung bases without any audible wheezing. Palpation of the lower extremities reveals bilateral pitting edema extending to the knees. Which of the following is the most appropriate next step in the management of this patient?

  1. Intravenous loop diuretic administrationCevap
  2. B
    Systemic glucocorticoid therapy
  3. C
    Inhaled short-acting bronchodilator therapy
  4. D
    Empiric broad-spectrum antibiotic therapy
  5. E
    Rapid intravenous crystalloid bolus

Cevap

Intravenous loop diuretic administration
The correct answer is the administration of an intravenous loop diuretic. This patient's presentation of orthopnea, paroxysmal nocturnal dyspnea, elevated jugular venous pressure, an S3 gallop, basilar crackles, and peripheral edema is the classic textbook description of acute decompensated heart failure with volume overload. Intravenous loop diuretics act rapidly on the ascending limb of the loop of Henle to induce potent diuresis, rapidly decreasing intravascular volume and ventricular preload. This effectively relieves pulmonary congestion, reduces cardiac work, and improves oxygenation.

Adım Adım Çözüm

1
Analyze the patient's presenting symptoms and vital signs.
The patient has progressive dyspnea, orthopnea (needs a recliner to sleep), and paroxysmal nocturnal dyspnea (waking up suffocating). He is tachycardic, tachypneic, and mildly hypoxic.
Identifying these key symptoms establishes a severe respiratory or cardiac origin for the distress.
2
Interpret the physical examination findings.
Findings include distended jugular veins, an S3 gallop, bilateral lung crackles, and lower extremity pitting edema.
These findings are highly specific for fluid overload and elevated left and right ventricular filling pressures, pointing directly to acute decompensated heart failure rather than a primary pulmonary process.
3
Determine the most appropriate initial therapy based on the diagnosis.
The patient requires immediate reduction of intravascular volume and ventricular preload to relieve pulmonary congestion.
Intravenous loop diuretics (such as furosemide or bumetanide) are the first-line treatment for acute decompensated heart failure with signs of volume overload.

Anahtar Kavram

Acute Decompensated Heart Failure (ADHF)
Tahmini Süre:1m 0s
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Konular

Cardiovascular System

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