You have on hand h 0 25 mg per q 1 tablet. You will learn how to work the following drug calculation problems.
Use the following equations.
Dose calculation formulas. 1 2 10 x dose frequency duration quantity to dispense 1 2 10 20 20 x so 20 tablets of biaxin 250 mg should be dispensed. Notice that the label on x is always the same as q. 100 mg 2 ml 3.
Formulas for calculating medication dosage basic formula d x q x a where d desired is the dosage the physician ordered a available is the dosage strength as stated on the medication label and q quantity is the volume in which the dosage strength is available e g. Fortunately calculating any one of these three variables is easy to do when you know the other two variables. Therefore x 1 5 tabs or 1 tabs.
Dose weight dosage weight is the patients weight expressed in kg or lb. In this review we will start by working basic metric conversions and then progress to solving more complex dosage calculations. The formula should be written as.
D 0 375 mg h 0 25 mg q 1 tab x tab x 0 375 0 25 1 x 0 375 0 25 x 1 5 1 tabs. The desired d is 0 375 mg. This is a comprehensive dosage calculation review for nursing students.
Now solve the problem. Ml x mg mg 2 100 400 cancel out the units of measure that are alike and solve the mathematical operations. The label on x is tablet.
The basic formula is. Dose frequency duration quantity to dispense using the information provided in the prescription you can set up the calculation as such. D h q x.
Quantity of drug available unknown dose on hand doctor s order 1. The answer is 8 ml. If you want to calculate the dose of a medication you need to use the following equation.
Flow rate ml hr total volume ml infusion time hr infusion time hr total volume ml flow rate ml hr.
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