Question

a nurse is given instructions to give a nitroglycerin drip at 25 mcg/minute. the nitroglycerin is mixed at 60 mg per 600 ml. the flow rate needs to be in ml/hr. complete parts a through c. recall that 1000 mcg = 1 mg. a) what is the dosage in milligrams per minute (mg/min)? 0.025 mg/min (type an integer or a decimal.) b) what is the dosage in milligrams per hour, mg/hr? 1.5 mg/hr (type an integer or a decimal.) c) how many milliliters per hour, ml/hr, should be administered? □ ml/hr (type an integer or a decimal.)

Explanation:

Step1: Find the concentration of nitroglycerin in mg/mL

The nitroglycerin is mixed at 60 mg per 600 mL. So the concentration $C$ is $\frac{60\space mg}{600\space mL} = 0.1\space mg/mL$.

Step2: Use the dosage in mg/hr to find mL/hr

From part (b), the dosage is 1.5 mg/hr. We know that Volume (in mL) = $\frac{\text{Dosage (in mg/hr)}}{\text{Concentration (in mg/mL)}}$. Substituting the values, we get $\frac{1.5\space mg/hr}{0.1\space mg/mL} = 15\space mL/hr$.

Answer:

15