Dosage Calculations Practice – Flashcards
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Convert 93074 milligrams to grams
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93.074
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Convert 0.090113 milliliters to microliters
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90.113
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Convert 0.056915 meters to micrometers.
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56915
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Convert 64343 milliliters to liters.
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64.343
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Convert 0.008781 milliliters to microliters
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8.781
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Convert 97.196 micrograms to milligrams
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0.097196
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Convert 91.765 grams to milligrams
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91765
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Convert 0.056244 milligrams to micrograms
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56.244
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Convert 0.027342 milliliters to microliters
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27.342
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Convert 16.961 micrograms to milligrams
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0.016961
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Convert 70.906 microliters to milliliters
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0.070906
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Convert 9.707 liters to milliliters
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9707
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Convert 0.089292 meters to micrometers
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89292
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Convert 91.103 microliters to milliliters
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0.091103
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Convert 0.070223 liters to microliters
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70223
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Convert 0.073969 liters to microliters
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73969
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Convert 46704 micrometers to meters
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0.046704
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Convert 97599 milligrams to grams
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97.599
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Convert 45232 milligrams to grams
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45.232
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Convert 14.805 micrograms to milligrams
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0.014805
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A client is ordered 50 milligrams of Amitriptyline. 25 milligram tablets are available. How many tablets will you give?
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2
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A client is ordered 37.5 milligrams of Dothiepin. 75 milligram tablets are available. How many tablets will you give?
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37.5/75=0.5
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A client is ordered 37.5 milligrams of Nortriptyline 25 milligram tablets are available. How many tablets will you give?
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1.5
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A client is ordered 300 milligrams of Thioridazine. 100 milligram tablets are available. How many tablets will you give?
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3
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A client is ordered 0.5 milligrams of Digoxin. 250 microgram tablets are available. How many tablets will you give?
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500=0.5 mg/250 mcg=2
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A client is ordered 1 milligram of Diazepam. 2 milligram tablets are available. How many tablets will you give?
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0.5
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A client is ordered 300 milligrams of Carbamazepine. 200 milligram tablets are available. How many tablets will you give?
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1.5
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A client is ordered 200 milligrams of Sodium Valproate. 100 milligram tablets are available. How many tablets will you give?
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2
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A client is ordered 100 milligrams of Thioridazine. 25 milligram tablets are available. How many tablets will you give?
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4
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A client is ordered 7.5 milligrams of Bendrofluazide. 2.5 milligram tablets are available.How many tablets will you give?
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3
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A client is ordered 100 milligrams of Pehthidine HCL. 50 milligram tablets are available. How many tablets will you give?
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2
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A client is ordered 30 milligrams of Codeine phosphate. 60 milligram tablets are available. How many tablets will you give?
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0.5
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A client is ordered 2.5 grams of Neomycin sulphate. 500 milligram tablets are available. How many tablets will you give?
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5
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A client is ordered 30 milligrams of Diltiazem hydrochloride. 60 milligram tablets are available. How many tablets will you give?
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0.5
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A client is ordered 62.5 micrograms of Benztropine Mesylate. 0.25 mg tablets are available. How many tablets will you give?
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0.25
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A client is ordered 60 milligrams of Phenelzine. 15 milligram tablets are available. How many tablets will you give?
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4
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A client is ordered 37.5 milligrams of Clomipramine. 25 milligram tablets are available. How many tablets will you give?
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1.5
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A client is ordered 1.25 milligrams of Clonazepam. 0.5 milligram tablets are available. How many tablets will you give?
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2.5
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A client is ordered 2.5 milligrams of Haloperidol. 5 milligram tablets are available. How many tablets will you give?
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0.5
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A client is ordered 40 milligrams of Imipramine. 10 milligram tablets are available. How many tablets will you give?
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4
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A client is ordered 35 milligrams of Codeine phosphate by subcutaneous injection. 50 milligrams in 1 milliliter of liquid for SC Injection is available. How many milliliters will you administer?
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35/50*1/1=35/50=0.7
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A client is ordered 50 milligrams of Amoxicillin trihydrate orally. 125 milligrams in 5 milliliters of Syrup is available. How many milliliters will you administer?
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50/125*5/1=2
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A client is ordered 30 milligrams of Frusemide intravenously. 10 milligrams in 1 milliliter of liquid for IV Injection is available. How many milliliters will you administer?
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3
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A client is ordered 20 milligrams of Haloperidol decanoate by intramuscular injection. 50 milligrams in 1 milliliter of liquid for IM Injection is available. How many milliliters will you administer?
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0.4
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A client is ordered 50 milligrams of Aminophylline intravenously. 250 milligrams in 10 milliliters of liquid for IV Injection is available. How many milliliters will you administer?
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2
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A client is ordered 75 milligrams of Pethidine HCL by subcutaneous injection. 50 milligrams in 1 milliliter of liquid for SC Injection is available. How many milliliters will you administer?
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1.5
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A client is ordered 25 milligrams of Methyldopa intravenously. 50 milligrams in 5 millilitres of liquid for IV Injection is available. How many millilitres will you administer?
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2.5
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A client is ordered 5 milligrams of Flupenthixol decanoate by intramuscular injection. 40 milligrams in 2 milliliters of liquid for IM Injection is available. How many milliliters will you administer?
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0.25
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A client is ordered 75 milligrams of Aminophylline intravenously. 250 milligrams in 10 milliliters of liquid for IV Injection is available. How many milliliters will you administer?
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3
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A client is ordered 200 milligrams of Augmentin 600 intravenously. 600 milligrams in 6 milliliters of liquid for IV Injection is available. How many millilitres will you administer?
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2
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A client is ordered 5 milligrams of Haloperidol orally. 2 milligrams in 1 milliliter of Syrup is available. How many milliliters will you administer?
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2.5
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A client is ordered 13 milligrams of Morphine sulphate by intramuscular injection. 5 milligrams in 1 milliliter of liquid for IM Injection is available. How many milliliters will you administer?
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2.6
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A client is ordered 22 milligrams of Gentamicin sulphate by intramuscular injection. 20 milligrams in 2 milliliters of liquid for IM Injection is available. How many milliliters will you administer?
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2.2
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A client is ordered 75 micrograms of Fenatyl citrate intravenously. 0.1 milligrams in 1 milliliter of liquid for IV Injection is available. How many milliliters will you administer?
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75*0.001=0.075 0.075/0.1=0.75
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A client is ordered 50 milligrams of Sodium Valproate orally. 200 milligrams in 5 milliliters of Syrup is available. How many milliliters will you administer?
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1.25
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A client is ordered 10 milligrams of Thioridazine orally. 50 milligrams in 5 milliliters of suspension is available. How many milliliters will you administer?
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1
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A client is ordered 60 milligrams of Nefopam hydrochloride by intramuscular injection. 20 milligrams in 1 milliliter of liquid for IM Injection is available. How many milliliters will you administer?
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3
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A client is ordered 200 milligrams of Amoxicillin trihydrate orally. 250 milligrams in 5 milliliters of Syrup is available. How many milliliters will you administer?
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4
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Calculate the drip rate for 100 mls of IV Fluids to be given over a half hour via a giving set which delivers 10 drops/ml
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100 mls*10 drops(ml)/30 min=33 drops in a min
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One litre of Normal Saline is charted over 9 hours. The drop factor is 15. Calculate the number of drops per minute.
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1000 mls*15 drops in ml/540 (9 hours) min=28 drops in min
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One and a half litres of Normal Saline is required to be given over 4 hours. Using a giving set which delivers 10 drops/ml how many drops per minute will need to be given?
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1.5 liters(1500 ml)*10 drops( in ml)/240 (4 hours) min=63 drops in min
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Calculate the drip rate for 2 litres of IV Fluids to be given over 5 hours via a giving set which delivers 10 drops/ml.
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67 drops in min
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Ordered: 1 litre of Dextrose 5% in water over 8 hours using a giving set which delivers 10 drops/ml. Calculate the rate in drops/minute.
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21 drops in min
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You are required to administer 100 mls of IV Fluids over 1 hour. The drop factor is 15. How many drops per minute are required to start the flow off at the correct rate?
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25 drops in min
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You are required to administer 500 mls of Normal Saline over 3.5 hours. The drop factor is 10. How many drops per minute are required to start the flow off at the correct rate?
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24 drops in min
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Calculate the drip rate for 500 mls of Normal Saline to be given over 4.5 hours via a giving set which delivers 15 drops/ml.
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28 drops in min
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You are required to administer 1 litre of Normal Saline over 7 hours. The drop factor is 10. How many drops per minute are required to start the flow off at the correct rate?
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24 drops in min
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One litre of Dextrose 5% in water is charted over 8 hours. The drop factor is 10. Calculate the number of drops per minute.
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21 drops in min
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You are required to administer 3 litres of IV Fluids over 12 hours. The drop factor is 10. How many drops per minute are required to start the flow off at the correct rate?
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42 drops in min
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Calculate the drip rate for 500 mls of Dextrose 5% in water to be given over 4 hours via a giving set which delivers 15 drops/ml.
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31
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One and a half litres of IV Fluids is prescribed over 8 hours. The drop factor is 15. How many drops per minute are required to start the flow off at the correct rate?
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47
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Three litres of Hartmans (Lactated Ringer's) is charted over 12 hours. The drop factor is 15. The IV has been running for 9 hours. 800 mls remain. How many drops per minute are needed so that the IV finishes in the required time?
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67
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Calculate the drip rate for 100 mls of IV Fluids to be given over 2 hours via a giving set which delivers 60 drops/ml.
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50
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One litre of Dextrose 5% in water is charted over 3 hours. The drop factor is 10. The IV has been running for 1 hour and 15 minutes. 500 mls remain. How many drops per minute are needed so that the IV finishes in the required time?
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48
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You are required to administer 1 litre of Normal Saline over 7 hours. The drop factor is 15. How many drops per minute are required to start the flow off at the correct rate?
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36
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One litre of IV Fluids is charted over 11 hours. The drop factor is 10. The IV has been running for 9 hours and 45 minutes. 100 mls remain. How many drops per minute are needed so that the IV finishes in the required time?
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13
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Three litres of Normal Saline is charted over 12 hours. The drop factor is 15. The IV has been running for 9 hours and 45 minutes. 500 mls remain. How many drops per minute are needed so that the IV finishes in the required time?
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56
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One hundred millilitres of IV Fluids is charted over 2.5 hours. The drop factor is 15. Calculate the number of drops per minute.
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10
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Phenytoin (Dilantin), 0.1 g PO, is ordered to be given through a nasogastric tube. Phenytoin is available as 30 mg / 5 mL. How much would the nurse administer?
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100/30*5=16.7
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what is this "gtts"?
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drops
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what is this " Drop Factor"?
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Number of drops per volume of IV fluid. Varies depending on the tubing used. Usually measured in gtts/mL.
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what is this " Flow Rate"?
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Measure of the flow of liquid from an IV. Usually measured in gtts/minute (how many drops are released every minute) or in mL/hour (how many mL flow through each hour). gtts/minute is used for manually regulating an IV while mL/hour is used when utilizing an electronic IV regulator.
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what is this "D'?
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Dextrose
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what is this W and S?
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W-water, S-saline
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what is this NS?
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Normal Saline (0.9% NaCl)
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RL or LR?
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Lactated Ringer's
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Given a volume of IV fluid and a dosage expressed in percent, what is the mass of a particular dosage?
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concentration % /100 *volume (ml)=dosage (g)
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Calculate the amount of dextrose in 1000 mL D5W
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5/100*1000=50g
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Calculate the amount of sodium chloride in 2000 mL NS. Recall NS is 0.9% NaCl (sodium chloride)
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0.9%/100*2000=18 g
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Given a certain amount of liquid and a time period, what is the necessary IV flow rate in mL/hr?
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Measurement used when IV regulated electronically by infusion pump-volume (ml)/time(hr)=flow rate mL/hr
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Infuse 250 mL over the next 120 minutes by infusion pump
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250/2 (120 minutes)=125 mL/hr
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Ordered 1000 mL D5W IV to infuse in 10 hours by infusion pump
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100mL/hr
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Given a certain amount of liquid, a time period, and a drop factor (gtts/mL), what is the necessary IV flow rate in gtts/min?
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Measurement used when IV is regulated manually. Because it is not possible to give a patient a fraction of a drop, it is typical to round answers for these problems up or down to the nearest whole number- volume/time*drop factor=flow rate
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Calculate the IV flow rate for 1200 mL of NS to be infused in 6 hours. The infusion set is calibrated for a drop factor of 15 gtts/mL
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1200/360*15=50 gtts/min
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Calculate the IV flow rate for 200 mL of 0.9% NaCl IV over 120 minutes. Infusion set has drop factor of 20 gtts/mL
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33 gtts/min
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1) 0-10 kg? 2)10-20 kg? 3)20-70 kg? 4) over 70 kg?
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1)100 ml per kg 2)1,000 mL + 50 mL per each kg above 10 kg 3)1,500 mL + 20 mL per each kg above 20 kg 4)2,500 mL (adult requirement)
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An infant weighs 4 kg. What is the required amount of fluid per day in mL?
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4*100=400 ml
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An infant weighs 30.8 lb. What is the required IV flow rate in mL/hr to maintain proper fluid levels?
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1.Convert 30.8 lb to kg. lb → kg ( ÷ by 2.2 ) 30.8 lb ÷ 2.2 = 14 kg 2. 14 kg - 1200 ml in one day 3.1200/24 hr=.......50 ml/hr
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Given the weight of a patient and a dosage specified in terms of weight, calculate the necessary dosage
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Weight in Kg * Dosage Per Kg = Y (Required Dosage)
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A doctor orders 200 mg of Rocephin to be taken by a 15.4 lb infant every 8 hours. The medication label shows that 75-150 mg/kg per day is the appropriate dosage range. Is this doctor's order within the desired range?
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Weight in Kg * Dosage Per Kg = Y (Required Dosage) Convert 15.4 lb to kg. lb → kg ( ÷ by 2.2 ) 15.4 lb ÷ 2.2 = 7 kg 7 kg * 75 mg/kg = 525 mg (Minimum Desired Dosage) 7 kg * 150 mg/kg = 1,050 mg (Maximum Desired Dosage) 24 hours in one day and the medication is ordered every 8 hours. 24 hrs / 8 hrs = 3 times per day doctor ordered medication 200 * 3 = 600 mg ordered per day600 mg is within the desired range of 525-1,050 mg Yes doctor has ordered a dosage within the desired range
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Solumedrol 1.5 mg/kg is ordered for a child weighing 74.8 lb. Solumedrol is available as 125 mg / 2mL. How many mL must the nurse administer?
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Weight in Kg * Dosage Per Kg = Y (Required Dosage) Convert 74.8 lb to kg. lb → kg ( ÷ by 2.2 ) 74.8 lb ÷ 2.2 = 34 kg 34 kg * 1.5 mg/kg = 51 mg This is now an ordinary Mass/Liquid For Liquid Question. 51 mg is ordered and the medication is available as 125 mg / 2 mL 51/125*2=0.82 ml
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Give an order in quantity of mass per time, determine the necessary IV flow rate in mL/hr based on the given mass per volume.
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ordered per hour/have*flow rate =mL/hr
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Give patient 500 mg of dopamine in 250 mL of D5W to infuse at 20 mg/hr. Calculate the flow rate in mL/hr.
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20/500*250=10mL/hr
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Aggrastat at 12.5 mg in 250 mL is prescribed to beinfused at a rate of 6 mcg/kg/hr in a patient who weighs 100 kg. At what flow rate in mL/hr will you set the pump?
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The first step is to convert the order per time to the amount required for this particular patient. This is a Dosage By Weight Question. 100 kg is the weight in kg and 6 mcg/kg/hr is a dosage in terms of kg. Weight in Kg * Dosage Per Kg = Y (Required Dosage) 100 kg * 6 mcg/kg/hr = 600 mcg/hr Convert 600 mcg/hr to mg/hr. mcg → mg → g → kg ( ÷ by 1,000 ) 600 ÷ 1,000 = 0.6 mg/hr 0.6/12.5*250=12 ml/hr
