Here is a quick review of how to calculate a dose of injectable medication. It is good review for in-clinic use as well as studying for the VTNE.
We will be having several blog posts on how to do different types of calculations. To be truly accurate when adding drugs to a bag like this, you should discard 5 mL of fluids from the bag prior to adding the 5 mL of metoclopramide. The VTNE will have several questions for which you will need to perform calculations.
You have three hours to complete the examination. A question will pop up on your screen, along with several possible answers to choose from in multiple-choice format. You will not know which questions are not scored. To take advantage of the ready-made VTNE study flashcards already packed with questions related to the knowledge you will need to know on your VTNE exam, you simply click on the icon that says Begin Flashcards. The test contains 20 questions that do not count towards your score. So divide the hours by 24 (since there are 24 hours in a day):Ĥ) Now plug into the equation: 2mg/7kg/1.8 days= 25 mgĥ) Calculate the quantity of metoclopramide to add by now dividing the 25 mg by the concentration of the drug (5 mg/mL) : 25mg/5mg/mL = 5 mL The VTNE is a computer-delivered, multiple-choice examination consisting of 170 questions. We want to make sure the units match the equation in the problem which asks for mg/kg/DAY. To be truly accurate when adding drugs to a bag like this, you should discard 32 mL of fluids from the bag prior to adding the 32 mL of fentanyl.Ģ) Calculate the number of hours an infusion will last by dividing the volume in the bag (1 Liter, or 1,000 mL) by the rate per hour: 1,000 mL/23mL/hr = 43 hours (If the problem asks for a dose per minute, you will need to multiply the hours by 60 to convert to minutes, but since this problem asks for ug/kg/HOUR, you do not need to further convert)Ĥ) Now plug into the equation: 4 ug/40kg/10 hours= 1600 ugĥ) Now convert the ug into mg by dividing by 1,000: 1600/1,000 = 1.6 mgĦ) Calculate the quantity of fentanyl to add by now dividing the 1.6 mg by the concentration of the drug (0.05 mg/mL) : 1.6mg/0.05mg/mL = 32 mL VTNE Practice Test Time: 3-hour, computer-based exam Number of questions: 170 multiple-choice questions your score is based on 150 operational questions. Make sure to pay attention to this.Ģ) Calculate the number of hours an infusion will last by dividing the volume in the bag (1 Liter, or 1,000 mL) by the rate per hour: 1,000 mL/100mL/hr = 10 hours To solve for an unknown variable when given an addition or subtraction problem, we simply need to get the variable by itself, by undoing what was done to it. To solve this problem, break down the basic parts to make it less overwhelming:ġ) Convert pounds to kilograms- Note that in this problem the units are already in kg so no conversion is necessary. However, the VTNE may have some questions on CRI and it will benefit you to know how to do these calculations. Constant rate infusions are not something that an entry level technician would typically perform. VTNE Prep helps individuals studying for the VTNE with resources, mentors, and encouragement, that empowers people of all ages and backgrounds to follow their dreams, achieve and inspire others.
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