Dosage Calculation Exam.pdf file:///C:/Users/HP/Desktop/New%20folder%20(4)/Dosage%20Calcu
Dosage Calculation Exam
Questions & Answers
1. determining gtt/min -drop factor: convert given hours to minutes=
1hr/60min=xhrs/xmin
volume(mL)/minutes x drop factor(gtt/min)= x gtt/min
2. 1.5 L to infuse over 16 hours. Drop factor is 20 gtt/min. Should be set to
deliver how many gtt/min? Round to nearest whole number: 1500mL/ 360 min.x
20 gtt/min= 83
3. One grain is equal to: 60 milligrams, therefore a grain is a more powerful dose
than a milligram
4. 1 gram (Gm) = ? mg: 1000mg
5. 1 milligram (mg) =? mcg: 1000mcg
6. 1 liter (L) = ? ml: 1000ml
7. 1 grain (gr) = ?mg. gr1/4=?mg. griii=?mg: 60mg. 15mg. 180mg.
8. 1 teaspoon (tsp) = ?ml: 5ml
9. 1 tablespoon (Tbsp.) = ?ml: 15ml
1/6
1 of 14 11/8/2024, 7:02
,Dosage Calculation Exam.pdf file:///C:/Users/HP/Desktop/New%20folder%20(4)/Dosage%20Calcu
10. 1 ounce (oz.) = ?ml: 30 ml
11. 1 kg = ?lbs: 2.2lbs
12. The basic formula for dosage calculations is:: D/H × V = amount to give. All
must be in same unit system.
D (desired dose): the dose ordered
H (on-hand dose; supplied dose): dose on label of containerV
(vehicle): form and amount of supplied drug.
13. Ordered dose: Erythromycin 500mg by mouth every 8 hours
Supplied dose: Erythromycin 250mg
Vehicle: 1 tablet: 250 × 1 = 2 tablets
14. Ratio-Proportion Formula: Dose on hand/Quantity on hand =Dose desired /X
(quantity desired). Cross multiply and solve for x. All must be in same unit system
. Calculating for the quantity of supplied medication that is equal to the prescribed
dosage
15. Dose on hand (supplied dose): Erythromycin 250 mg
Quantity on hand: 1 tablet
Desired dose (ordered dose): Erythromycin 500 mg: 250 mg/1 tablet = 500 mg/X
tablet. By cross multiplying and solving for X, you have
250X = 500
2/6
2 of 14 11/8/2024, 7:02
Dosage Calculation Exam
Questions & Answers
1. determining gtt/min -drop factor: convert given hours to minutes=
1hr/60min=xhrs/xmin
volume(mL)/minutes x drop factor(gtt/min)= x gtt/min
2. 1.5 L to infuse over 16 hours. Drop factor is 20 gtt/min. Should be set to
deliver how many gtt/min? Round to nearest whole number: 1500mL/ 360 min.x
20 gtt/min= 83
3. One grain is equal to: 60 milligrams, therefore a grain is a more powerful dose
than a milligram
4. 1 gram (Gm) = ? mg: 1000mg
5. 1 milligram (mg) =? mcg: 1000mcg
6. 1 liter (L) = ? ml: 1000ml
7. 1 grain (gr) = ?mg. gr1/4=?mg. griii=?mg: 60mg. 15mg. 180mg.
8. 1 teaspoon (tsp) = ?ml: 5ml
9. 1 tablespoon (Tbsp.) = ?ml: 15ml
1/6
1 of 14 11/8/2024, 7:02
,Dosage Calculation Exam.pdf file:///C:/Users/HP/Desktop/New%20folder%20(4)/Dosage%20Calcu
10. 1 ounce (oz.) = ?ml: 30 ml
11. 1 kg = ?lbs: 2.2lbs
12. The basic formula for dosage calculations is:: D/H × V = amount to give. All
must be in same unit system.
D (desired dose): the dose ordered
H (on-hand dose; supplied dose): dose on label of containerV
(vehicle): form and amount of supplied drug.
13. Ordered dose: Erythromycin 500mg by mouth every 8 hours
Supplied dose: Erythromycin 250mg
Vehicle: 1 tablet: 250 × 1 = 2 tablets
14. Ratio-Proportion Formula: Dose on hand/Quantity on hand =Dose desired /X
(quantity desired). Cross multiply and solve for x. All must be in same unit system
. Calculating for the quantity of supplied medication that is equal to the prescribed
dosage
15. Dose on hand (supplied dose): Erythromycin 250 mg
Quantity on hand: 1 tablet
Desired dose (ordered dose): Erythromycin 500 mg: 250 mg/1 tablet = 500 mg/X
tablet. By cross multiplying and solving for X, you have
250X = 500
2/6
2 of 14 11/8/2024, 7:02
