4. You are a pharmacist in-training at a local hospital and are told to prepare

Question

4. You are a pharmacist in-training at a local hospital and are told to prepare an intravenous (IV) bag of antibiotics in order to treat a patient with bacterial sepsis (i.e., infection of the blood). You are given an IV bag that contains 253.8 ml of sterile saline and a bottle that contains 67 ml of an antibiotic solution and are told to make a 1:23 dilution of the antibiotic into the bag containing the sterile saline. How much antibiotic solution would you need to add to the IV bag to produce the correct dilution? SHOW ALL WORK WITH THE FINAL ANSWER ROUNDED UP TO 2 DECIMAL PLACES. 3 pts)

Explanation / Answer

Given Antibiotic solution is 67 ml and sterile saline is 253.8 ml

need to make dilution 1: 23

It means the 1 ml antibiotic and the 22 ml sterile saline therefore

for 22 = 1 ml antibiotic

therefore for 253.8=? ml

(253.8 X 1)/ 22 = ?

11.03 ml

Therefore 11.03 ml of antibiotic need to add to the bag IV to produce to correct dilution

  that is 1:23

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