Dosage Calculation Methods and Techniques

The video tutorial explains three methods for solving dosage calculation problems: dimensional analysis, desired over have, and ratio and proportion. It begins with a review of a sample problem where a provider orders 2,000 mg IV daily, and the supply is a 4 g per 2 ml vial. The tutorial demonstrates how to calculate the correct dosage in milliliters using each method, emphasizing the importance of unit conversion and matching units for accurate calculations.

What is the main goal when solving dosage calculation problems?

• To calculate the total grams needed

• To determine the milliliters per dose

• To convert milliliters to liters

• To find the number of doses per day

Which method uses conversion factors to cancel out units?

• Desired over have method

• Metric conversion method

• Dimensional analysis

• Ratio and proportion method

In the dimensional analysis method, what is the first step?

• Cross-multiply the ratios

• Convert grams to milligrams

• Start with the provider's order

• Multiply by the quantity

What must be true about the units in the desired over have method before solving?

• They must be in liters

• They must be in grams

• They must be in milliliters

• They must match

What is the formula used in the desired over have method?

• Desired dose divided by have dose, multiplied by quantity

• Have dose divided by desired dose, multiplied by quantity

• Desired dose plus have dose, divided by quantity

• Have dose minus desired dose, multiplied by quantity

What is the key step in solving problems using ratio and proportion?

• Dividing the ratios

• Subtracting the ratios

• Cross-multiplying the ratios

• Adding the ratios

In the ratio and proportion method, what should you do if units do not match?

• Ignore the mismatch

• Add more units

• Use a different method

• Convert the units to match

What is an alternative way to set up ratio and proportion problems?

• Using dots instead of lines

• Using a table format

• Using a single line

• Using a pie chart

How do you solve a ratio and proportion problem set up with dots?

• Divide the inner terms by the outer terms

• Subtract the outer terms from the inner terms

• Multiply the inner and outer terms

• Add all the terms together

What is the final step in all dosage calculation methods discussed?

• Divide to isolate the variable

• Add all the values

• Multiply all the values

• Subtract to find the difference