For a client weighing 80 kg, how many ml of inamrinone should be administered if prescribed at 0.75 mg/kg and available as 100 mg/20 ml?

To determine how many milliliters of inamrinone should be administered, you start by calculating the total dose based on the client's weight and the prescribed dosage. The client weighs 80 kg, and the prescribed dosage is 0.75 mg/kg.

First, you perform the multiplication:

Total dosage = Weight (kg) × Dosage (mg/kg)

Total dosage = 80 kg × 0.75 mg/kg = 60 mg

Now you need to find out how many milliliters that total dosage corresponds to, using the concentration provided. The medication is available at a concentration of 100 mg in 20 ml.

Next, you determine how many milliliters contain the required 60 mg. To find that out, you set up a proportion based on the concentration:

If 100 mg = 20 ml, then 60 mg = X ml.

You can cross-multiply and solve for X:

( X = \frac{60 , \text{mg} \times 20 , \text{ml}}{100 , \text{mg}} )

Now, calculate:

( X = \frac{1200}{100} = 12 , \text{ml}