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Zorluk: OrtaInitial Stabilization and Triage

A 35-year-old woman is brought to the emergency department by ambulance due to the sudden onset of severe palpitations, shortness of breath, and lightheadedness. Her symptoms began approximately 30 minutes ago while she was watching television. She has no significant past medical history and takes no medications. On physical examination, the patient is lethargic, pale, and profusely diaphoretic. Her temperature is 37.1°C (98.8°F), blood pressure is 74/42 mmHg, heart rate is 185/min and regular, respiratory rate is 26/min, and oxygen saturation is 95% on room air. Cardiac auscultation reveals a rapid, regular rhythm with no murmurs. Pulmonary auscultation is clear bilaterally. An electrocardiogram obtained immediately upon arrival shows a regular, narrow-complex tachycardia at a rate of 185/min without discernible P waves. Two large-bore peripheral intravenous lines are placed.

Which of the following is the most appropriate next step in the initial stabilization of this patient?

  1. Perform synchronized cardioversionCevap
  2. B
    Administer intravenous adenosine
  3. C
    Administer intravenous diltiazem
  4. D
    Instruct the patient to perform a Valsalva maneuver
  5. E
    Obtain a stat portable transthoracic echocardiogram

Cevap

Perform synchronized cardioversion
The correct answer is to perform synchronized cardioversion. This patient is presenting with supraventricular tachycardia (SVT) that is causing severe hemodynamic instability, evidenced by profound hypotension, lethargy, and diaphoresis. According to standard advanced cardiovascular life support (ACLS) protocols, any tachyarrhythmia causing hemodynamic instability (such as shock, altered mental status, ischemic chest pain, or acute heart failure) mandates immediate synchronized electrical cardioversion. This life-saving intervention rapidly restores normal sinus rhythm and adequate ventricular filling, addressing the root cause of the cardiogenic shock.

Adım Adım Çözüm

1
Assess the patient's hemodynamic status.
The patient has a blood pressure of 74/42 mmHg, lethargy, and diaphoresis.
Determines whether the patient is clinically stable or unstable, which dictates the urgency and modality of the initial intervention.
2
Analyze the electrocardiogram findings.
The ECG reveals a narrow-complex, regular tachycardia at 185/min without P waves, consistent with supraventricular tachycardia (SVT).
Identifies the underlying arrhythmia responsible for the shock presentation.
3
Determine the appropriate initial stabilization step based on the rhythm and clinical stability.
Immediate synchronized electrical cardioversion is selected.
According to advanced cardiovascular life support (ACLS) guidelines, hemodynamically unstable patients with tachyarrhythmias require immediate electrical stabilization.

Anahtar Kavram

Hemodynamically unstable tachyarrhythmias require immediate synchronized electrical cardioversion as the initial stabilization step, prior to any pharmacologic interventions or advanced diagnostic imaging.
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Konular

Initial Stabilization and Triage

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