Final answer:
The correct initial push dose of lidocaine for cardiac arrest is Option B) 3mg, or 0.04mg/kg.
Step-by-step explanation:
The correct initial push dose of lidocaine for cardiac arrest is Option B) 3mg, or 0.04mg/kg. In the case of cardiac arrest, the dose of lidocaine is typically administered intravenously (IV). The recommended dose is based on the patient's weight, with a standard initial dose of 1-1.5 mg/kg. Therefore, for a patient weighing 75 kg, the initial push dose of lidocaine would be 3 mg.