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Zorluk: OrtaInitial Stabilization and Triage

A 72-year-old retired teacher arrives at the emergency department accompanied by her spouse. She complains of acute onset lightheadedness, chest pressure, and a sensation of her heart "racing" that began an hour ago while watching television. She has a history of hypertension and osteoarthritis. On assessment, she is pale and visibly sweating. She answers questions but appears confused and lethargic. Temperature is 36.8°C (98.2°F), heart rate is 172/min, blood pressure is 68/40 mm Hg, respiratory rate is 22/min, and oxygen saturation is 94% on room air. The cardiac monitor reveals a narrow-complex, irregularly irregular rhythm without discernible P waves. Which of the following is the most urgent next step in the management of this patient?

  1. Perform synchronized direct current cardioversionCevap
  2. B
    Obtain a formal 12-lead electrocardiogram
  3. C
    Administer intravenous diltiazem
  4. D
    Order a computed tomography pulmonary angiogram
  5. E
    Perform a transesophageal echocardiogram

Cevap

Perform synchronized direct current cardioversion.
The correct answer is to perform synchronized direct current cardioversion. This patient is presenting with an unstable tachyarrhythmia, as evidenced by a heart rate of 172/min accompanied by severe hypotension, altered mental status, diaphoresis, and ischemic chest pressure. According to standard Advanced Cardiac Life Support (ACLS) guidelines, any patient with a tachyarrhythmia who exhibits signs of hemodynamic instability must undergo immediate synchronized electrical cardioversion. This intervention is necessary to immediately restore normal sinus rhythm, thereby restoring ventricular filling time and adequate cardiac output. Delaying treatment for a diagnostic workup or administering pharmacologic agents can lead to complete cardiovascular collapse.

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1
Assess the patient's hemodynamic status based on vital signs and clinical presentation.
The patient exhibits severe hypotension (68/40 mm Hg), altered mental status, and diaphoresis, indicating cardiovascular collapse and a hemodynamically unstable state.
Determining whether a patient is stable or unstable dictates the immediate treatment pathway in the Advanced Cardiac Life Support (ACLS) algorithm.
2
Analyze the cardiac rhythm on the monitor.
The monitor shows a rapid (172/min), irregularly irregular, narrow-complex rhythm, consistent with atrial fibrillation with rapid ventricular response driving the shock state.
Identifying the primary etiology of the shock state is necessary to target the life-saving intervention appropriately.
3
Select the appropriate intervention for unstable tachycardia.
Immediate synchronized direct current cardioversion is indicated.
According to resuscitation protocols, unstable patients with a tachyarrhythmia require immediate electrical cardioversion to restore normal sinus rhythm and adequate cardiac output.

Anahtar Kavram

Immediate electrical cardioversion is the mandatory first step for patients with tachyarrhythmias who exhibit signs of severe hemodynamic instability.
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Konular

Initial Stabilization and Triage

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