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A 49-year-old, 220 lb. male, presented to the emergency department with a pulse oxygen reading of 89, blood pressure 180/92 mmHg, and a pulse of 126 bpm. He is administered O2 via nasal cannula and 1 liter of normal saline over 3 hours. He has a history of diabetes and hypertension. He is admitted to the hospital on observational status to monitor his vital signs. Once admitted, he is given Cipro 400 mg/200 mL, every 12 hours, infused at 500 mg/hr.

What is the flow rate (mL/hr) of the normal saline?

A. 450

B. 250

C. 336

D. 332

E. 333

E. 333 mL


A 57-year-old, 142 lb. female presented to the emergency department with a fever of 102.7 degrees F for 3 days. She has an open ulceration on her left leg determined to be cellulitis. She is admitted to the hospital to receive IV antibiotics. A culture determines sensitivity to cephalosporins. Cefazolin at a dose of 1.5 g IV every 8 hours for 3 days is started. The physician orders the Cefazolin (1 g/50 mL) be infused at 2 g/hr. On the 4th day, the patient is released from the hospital and is prescribed cephalexin 500 mg four times daily for 7 days.

At what flow rate (gtt/min) is the antibiotic to be infused if the drop factor is 18 gtt/mL?

A. 10 gtt/min

B. 15 gtt/min

C. 30 gtt/min

D. 40 gtt/min

E. 45 gtt/min

C. 30 gtts/min

IV drip rate formula is as followed:


Determine the amount of mL per hour:


Calculate the drip rate using the IV drip rate formula:


Which of the following would be the MOST APPROPRIATE auxiliary labels for a prescription for clarithromycin 125 mg/5 mL?

  1. "Avoid light exposure"

  2. "Avoid dairy products"

  3. "Do not refrigerate"

  4. "Shake well"

A. I and II only

B. II and III only

C. III and IV only

D. II and IV only

E. II, III, and IV only


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