Answered: I have to issue this diabetes pen to…

Phlebotomy Essentials

6th Edition

ISBN:9781451194524

Author:Ruth McCall, Cathee M. Tankersley MT(ASCP)

Publisher:Ruth McCall, Cathee M. Tankersley MT(ASCP)

Chapter1: Phlebotomy: Past And Present And The Healthcare Setting

Section: Chapter Questions

Problem 1SRQ

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Question

I have to issue this diabetes pen to one of my teacher patients at WMS. This is not his original insulin pen because his name is on the prescription. I cannot tell you his name because of doctor/patient confidentiality. I am, however, his doctor (teaching is a side job for me). Each pen is filled with 3milliliters (ml) of insulin, which is the same as 300 units. Each time he uses it he must "prime" it by wasting 2 units. He then injects 12 units of insulin into his arm. He injects 13 units the next day. Of course, he must prime it again before every use. The 12 and 13 keep alternating. 12 then 13, then 12 then 13, etc... When there are less than 14 units left on the 12 unit day or less than 15 units on the 13 unit day my patient must prime the current pen (as stated above) and then prime a new pen to get the total dose needed. How many insulin pens must this teacher go through until the doses of insulin comes out evenly on that pen? Put another way, there is no insulin left in the pen after he uses the day's dose thus not needing to use a new pen?

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