Medication Dosage Calculation Practice Questions
RN Kid・20 minutes read
The video demonstrates medication dosage practice questions using the formula D/H x V, showing practical examples to calculate doses for different medications in various forms and concentrations. It provides step-by-step solutions for determining the number of tablets, milliliters, or vials needed to achieve the desired dose based on the amount available and concentration of the medication.
Insights
- The video provides practical examples of medication dosage practice questions, illustrating how to calculate the correct dosage based on the desired dose, amount on hand, and the vehicle of medication administration.
- Detailed scenarios in the questions demonstrate the application of dosage calculation formulas, such as determining the number of tablets, milliliters, or vials needed to administer specific doses of various medications accurately, emphasizing precision in medication administration.
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Recent questions
How is medication dosage calculated?
Medication dosage is calculated using the formula D/H x V, where D represents the desired dose, H is the amount on hand, and V is the vehicle indicating how the medication is given.
What is the dosage for 120 milligrams of Lasix?
The dosage for 120 milligrams of Lasix is 3 tablets of 40 milligrams each.
How much acetaminophen is needed for 975 milligrams?
975 milligrams of acetaminophen requires 3 tablets of 325 milligrams each.
What is the dosage for 0.5 milligrams of hydromorphone?
The dosage for 0.5 milligrams of hydromorphone is 0.25 milliliters of the 2 milligrams per ml concentration.
How many vials are needed for 7.5 grams of peptides IV?
To administer 7.5 grams of peptides IV, 2 vials of 3.75 grams each are necessary, calculated by dividing the desired dose by the amount on hand per vial.
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Summary
00:00
Medication Dosage Practice Questions with Examples
- The video focuses on medication dosage practice questions and provides practical examples.
- The formula for medication dosage calculations is reviewed, with D representing the desired dose, H the amount on hand, and the vehicle indicating how the medication is given.
- In the first practice question, a patient needs 120 milligrams of Lasix, available in 40 milligram tablets, resulting in the administration of 3 tablets.
- The second question involves a patient requiring 975 milligrams of acetaminophen, available in 325 milligram tablets, leading to the administration of 3 tablets.
- The third question presents a scenario where a patient needs 0.5 milligrams of hydromorphone, available in 2 milligrams per ml concentration, resulting in the administration of 0.25 milliliters.
- In the fourth question, a patient requires 0.4 milligrams of scopolamine, available in 0.6 milligram per ml concentration, leading to the administration of 0.67 milliliters.
- The fifth question involves a patient needing 2 milligrams of Versed, available in 10 milligram per ml concentrations, resulting in the administration of 0.2 milliliters.
- The sixth question presents a scenario where a patient requires 10,000 units of heparin, available in 5,000 unit per 0.5 milliliters concentration, leading to the administration of 1 milliliter.
16:52
Calculating Medication Doses for Various Routes
- For a 10,000 unit dose of heparin sub-q, 1 ml of the vehicle (0.5 ml) is needed, achieved by dividing 10,000 by 5 units and then multiplying by the vehicle.
- To administer 1.75 grams of IV Vanco Meissen, 1.75 vials are required, calculated by dividing the desired dose by the amount on hand (1 gram per vial).
- For a 3 milligram dose of morphine via nebulizer, 0.6 mils of morphine are needed, determined by dividing 3 by 10 and then multiplying by the vehicle (2 mils).
- To provide 7.5 grams of peptides IV, 2 vials of 3.75 grams each are necessary, found by dividing the desired dose by the amount on hand (3.75 grams per vial).
- Administering 37.5 milligrams of metoprolol orally requires 1.5 tablets of 25 milligrams each, calculated by dividing 37.5 by 25 and then multiplying by the vehicle (1 tablet).
- For a 5 milligram dose of Haldol sub-q PRN, the preparation involves 0.5 mils of Haldol, determined by dividing 5 by 10 and then multiplying by the vehicle (2 mils).
