RxPrep Calculations I - Common Conversions/Drug-Dose Conversions

5 mL

How many mL are in 1 tsp?

15 mL

How many mL are in 1 tbsp?

approximate: 30 mL

actual: 29.57 mL

How many mL (approximate and actual) are in 1 fl oz?

8 oz

How many oz are in 1 cup?

approximate: 240 mL

actual: 236.56 mL

How many mL (approximate and actual) are in 1 cup?

16 oz

How many oz are in 1 pint?

approximate: 480 mL

actual: 473 mL

How many mL (approximate and actual) are in 1 pint?

2 pints

How many pints are in 1 quart?

approximate: 960 mL

actual: 946 mL

How many mL (approximate and actual) are in 1 quart?

4 quarts

How many quarts are in 1 gallon?

approximate: 3840 mL

actual: 3785 mL

How many mL (approximate and actual) are in 1 gallon?

2.2 lbs

How many lbs are in 1 kg?

28.4 g

How many g are in 1 oz?

454 g

How many g are in 1 lb?

16 oz

How many oz are in 1 lb?

approximate: 65 mg

actual: 64.8 mg

How many mg (approximate and actual) are in 1 grain?

K, Na

What are 2 examples of monovalent ions?

Ca

What is an example of a divalent ion?

1

For monovalent ions, 1 mEq = ________ mmol.

0.5

For divalent ions, 1 mEq = ________ mmol.

2.54 cm

How many cm are in 1 in?

100 cm

How many cm are in 1 m?

20; 15

KCl 10% = ________ mEq/________ mL

40

calcium carbonate = ________% elemental calcium

21

calcium citrate = ________% elemental calcium

multiply by 0.8

How do you convert aminophylline doses to theophylline?

divide by 0.8

How do you convert theophylline doses to aminophylline?

Pharmacists Rock At Saving Lives Preventing Fatty deposits

2mg

5mg

10mg

20mg

40mg

40mg

80mg

What are the equivalent doses for the following statins?

pitavastatin: ________ mg

rosuvastatin: ________ mg

atorvastatin: ________ mg

simvastatin: ________ mg

lovastatin: ________ mg

pravastatin: ________ mg

fluvastatin: ________ mg

1:2.5

What is the IV:PO ratio for metoprolol?

B-EFT

1; 50; 40; 20

What are the equivalent doses for the following loop diuretics?

bumetanide: ________ mg

ethacrynic acid: ________ mg

furosemide: ________ mg

torsemide: ________ mg

1:2

What is the IV:PO ratio for furosemide?

1:1

What is the IV:PO ratio for loop diuretics (excluding furosemide)?

20

ferrous sulfate = ________% elemental iron

1:1

What is the typical ratio for converting between insulins?

80

When converting from NPH insulin dosed BID to insulin glargine dosed daily, use ________% of the NPH dose.

80

When converting from Toujeo to other forms of insulin glargine or detemir, use ________% of the Toujeo dose.

0.75:1

What is the IV:PO ratio for levothyroxine?

CHP PMT = DB

25; 20; 5; 5; 4; 4; 0.75; 0.6

What are the equivalent doses for the following steroids?

cortisone: ________ mg

hydrocortisone: ________ mg

prednisone: ________ mg

prednisolone: ________ mg

methylprednisolone: ________ mg

triamcinolone: ________ mg

dexamethasone: ________ mg

betamethasone: ________ mg

300; 8

5 mL lithium citrate syrup = ________ mg lithium carbonate = ________ mEq Li+ ion