Identify the ECG rhythm
1. Ventricular fibrillation
2. Atrial flutter
3. Sinus tachycardia
4. Ventricular tachycardia
1
Rationale 1: Ventricular fibrillation is too rapid to count and is grossly irregular; P:QRS shows no identifiable P waves; the PR interval is absent; and the QRS interval is bizarre and varies in shape and direction. It is important to identify this rhythm because it is a medical emergency; it is known as cardiac arrest because the heart is not pumping. Death will follow if this condition is not resolved within 4 minutes.
Rationale 2: This rhythm is not atrial flutter.
Rationale 3: This rhythm is not sinus tachycardia.
Rationale 4: This rhythm is not ventricular tachycardia.
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