A patient requires a medication at 0.3 mg/kg and weighs 70 kg. How much medication is needed?

To determine the amount of medication needed, you start by calculating the required dosage based on the patient's weight. In this case, the patient needs medication at a rate of 0.3 mg per kg of body weight.

First, multiply the weight of the patient (70 kg) by the dosage in mg/kg (0.3 mg/kg):

0.3 mg/kg * 70 kg = 21 mg

This calculation shows that the patient requires a total of 21 mg of the medication, making this answer correct. Understanding dosage calculations in medication administration is crucial, as it ensures patients receive the appropriate amount of medication based on their weight, thereby maximizing therapeutic effects and minimizing potential side effects.