Answer:
The first drug to administer is epinephrine in a dose of 1 mg or vasopressin in a dose of 40 units IV or IO.
Step-by-step explanation:
Epinephrine, also known as adrenaline, is a hormone that increases the blood flow to the heart. Vasopressin, also known as antidiuretic hormone, increases blood pressure since it constricts the arteries. As a result, the blood flow to the heart increases, and the chances to save the person too. The dosages of these two drugs are the same for every person, height and weight do not affect it, and it was established after studies to be the most effective dose.