Question

Nitroglycerine used to treat patients with angina is prescribed for a patient by IV at a rate of 215 micrograms per minute. The IV bag contains nitroglycerine/250 ml D5W. How many milliliters per hour should the patient receive?

A. 180 ml/h
B. 200 ml/h
C. 225 ml/h
D. 250 ml/h

Answer 1

The patient should receive approximately 0.22 ml/h of nitroglycerine.

Step-by-step explanation:

To calculate the milliliters per hour that the patient should receive, we need to convert the micrograms per minute to milliliters per hour. First, we need to find out how many milliliters are in 215 micrograms. Since the IV bag contains nitroglycerine/250 ml D5W, it means that there are 250 ml of nitroglycerine in 250 ml of D5W. So, the ratio of nitroglycerine to D5W is 1:1. Therefore, 215 micrograms of nitroglycerine is equal to 215 micrograms of D5W. Next, we need to convert micrograms to milliliters. Since there are 1,000 micrograms in 1 milligram, we can divide 215 micrograms by 1,000 to get the milligram equivalent. Then, we divide the milligram equivalent by the density of nitroglycerine. Finally, we divide the result by the rate of 60 minutes per hour to get the milliliters per hour. Based on these calculations, the patient should receive approximately 0.215 ml/h, which can be rounded to 0.22 ml/h.