Q1. A 72 yo with a history of COPD with severe dyspnea is seen in the ED. He is using accessory muscles of respiration. Despite nebulizer treatment there is no improvement. During the exam, the patient becomes unresponsive. He has no pulse and his ECG strip is shown below. CPR is initiated and 2 doses of IV epinephrine 1.0 mg. are administered. You make an instant diagnosis of?
a. Atrial fibrillation
b. Ventricular fibrillation
c. Pulseless electrical dissociation
d. Prolonged Qt syndrome
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