CALCULATION OF DRUG DOSAGES 2025 TEST
BANK. COMPLETE QUESTIONS AND ANSWERS
ALREADY GRADED A+.
A patient with a tidal volume of 400 milliliters has a tidal volume of how many liters?
40
4
.400
.04 -CORRECT->>.400L
A patient who weighs 55 kilograms is to receive a drug dosage of 10mg/kg. How much drug
should be administered?
550 mg
250 mg
25 mg
5.5 mg -CORRECT->>550 mg. To determine the dosage to administer, simply multiply 55 kg by
10 mg (55 kg x 10 mg = 550 mg).
A solution of drug contains 80 units/ml. How many milliliters would you need to deliver 320 units
of the drug?
0.4 ml
4 ml
14 ml
40 ml -CORRECT->>4 ml. Refer to example calculation 8 in the textbook to set up your
calculation and solve for X.
A medication bag contains 0.03 liters. This is equal to how many milliliters?
3
30
300
3,000 -CORRECT->>30. Refer to Table 2-2 to convert from liters to milliliters.
Vorozole is supplied in a powder form that must be mixed with normal saline or sterile water
prior to nebulization. This type of solution represents a:
Solid/solvent Weight/volume Liquid/solute
Volume/volume -CORRECT->>Weight/volume. A drug solution that consists of the active drug
in solid (or powder) form mixed with a liquid solvent is considered a weight/volume solution.
How much active drug is in 3 ml of a 10% solution?
0.3 g
1g
0.3 mg
,1 mg -CORRECT->>0.3 g. By definition (%solution = g). Solve: 3 x .10 = 0.3
A rescue dosage of surfactant calls for 3 ml/kg body weight. If a premature infant weighs 1,500
g, how many milliliters are needed?
5.0 ml
9.0 ml
0.45 ml
4.5 ml -CORRECT->>4.5 ml. You first convert the baby's weight from grams to kilograms. Then
you determine how many milliliters are needed if the required dosage is 3 ml per kilogram by
multiplying 3 by the weight in kg (3 ml x 1.5 kg).
What strength of drug would be administered if 6 g of active ingredient is reconstituted with
sterile water to a total volume of 300 ml?
2% strength
0.5% strength
20% strength
50% strength -CORRECT->>2% strength. 6 g of active ingredient in 300 ml represents 2 g for
every 100 ml, which is a 2% solution.
Normal saline in solution with albuterol is known as the solvent.
True
False -CORRECT->>True. A solution contains an active drug, which is the solute dissolved in a
solvent, such as sterile water or normal saline.
When calculating drug dosages based on a patient's weight in kilograms, a respiratory therapist
can use the BSA nomogram to convert from pounds to kilograms.
True
False -CORRECT->>False. The nomogram used to determine body surface area (BSA)
combines height and weight in a single measurement to determine a patient's overall body size.
If a drug dosage requires a specific number of units per patient weight in kilograms, the factor-
label method should be used to convert the patient's weight from the English system to the
metric system.
How many mg of active ingredient is there in 3 mL of a 0.083% solution of albuterol? -
CORRECT->>3 x .83mg = 2.49 mg (convert 0.083g to .83mg)
A metaproterenol sulfate unit dose contains 2.5 mL of a 0.6% solution. How many milligrams of
active ingredient are present in this unit dose? -CORRECT->>2.5 x 6mg = 15 mg (convert 0.6g
to 6mg)
If a drug order is written for 0.25 mg/kg of body weight, what dosage would be administered to a
patient weighing 88 lb.? -CORRECT->>88/2.2=40, 40 x .25 = 10mg
,The physician order reads "Administer 5 mg metaproterenol via inhalation route with a small
volume nebulizer." How many milliliters of a 1% solution should be used? -CORRECT->>5 x .1
= 0.5 mL
A dosage of 4 mg of morphine sulfate is ordered for a patient. How many milliliters of the
morphine solution needs to be taken from a vial of the medicine that contains 10 mg/ml? -
CORRECT->>4 x .10 = 0.4 mL
You are to administer 0.075 g of a medication labeled: "25 mg per mL." How much solution (mL)
needs to be taken out of the vial to administer the prescribed dosage? -CORRECT->>.75/.25 =
3 mL
A drug's dosage strength is available in a 1% solution. How many milliliters (mL) of drug are
required to deliver a 5 mg dose to a patient? -CORRECT->>5 x .1 = 0.5 mL
A drug is available as a 20 mg/3 mL solution. What is the percent strength (percent solution)? -
CORRECT->>2.0/3 = 0.67%
The drug dornase alfa has been ordered for a patient with cystic fibrosis. A single 2.5 mL
ampule contains a 2.5 mg dose. What is the percent solution of this medication? -CORRECT-
>>2.5/2.5 = 0.1%
An adult female patient weighs 125 lb. The dosage schedule for her medication calls for 5
mg/Kg body weight. How many mg of medication does this patient require? -CORRECT-
>>125/2.2 = 56.81 kg x 5mg = 284 mg
A physician orders 6mL of a 20% Mucomyst solution. Your department only carries the 10%
Mucomyst solution. How many mL of 10% Mucomyst must be given to equal the same dose of
the 20% Mucomyst? [Hint: Find the number of mg for the 20% solution first. Then find the
number of mL of the 10% solution to get that number of mg] -CORRECT->>6 x .20 = 1.2,
1.2/.10 = 12 mL
Which statement is false concerning writing numbers in health-care documentation?
Recommendations about proper technique in writing numbers are made by the JCAHO.
A 0 should always follow a decimal point.
Following general guidelines when writing numbers can help prevent medication errors.
Any decimal number should always be preceded by a 0. -CORRECT->>b. A 0 should never
follow a decimal point, because the decimal may be looked over and too high of a dose may be
administered.
The metric system is based upon exponential powers of:
100
1,000
10
, 10,000 -CORRECT->>c. 10
A patient with a tidal volume of 0.4 l, has a tidal volume of how many milliliters?
0.04 ml
0.004 ml
40 ml
400 ml -CORRECT->>d. 400 ml is the equivalent of 0.4 l based upon converting within the
metric system.
A patient who weighs 121 lbs. is to receive a drug dosage of 10 mg/kg. How much drug should
be administered?
250 mg
550 mg
5.5 mg
25 mg -CORRECT->>b. 550 mg. At 10 mg/kg, the given weight of 121 lbs. should be converted
to 55 kg and should then be multiplied by 10, because for every kilogram of weight, 10 mg of
medication should be given.
A patient is 167 cm tall. How many inches tall is the patient?
60 in.
66 in.
56 in.
86 in. -CORRECT->>b. 66 in. There are 2.54 cm in 1 in. Divide 167 by 2.54. The answer is
65.75. Of the answer choices provided, 66 in. is the closest.
What is the length of a newborn in inches if the patient is measured at 45.7 cm in length?
20 in.
19 in.
18 in.
17 in. -CORRECT->>c. 18 in. 2.54 cm = 1 in. 45.7 cm/2.54 cm = 17.99 in. 18 in. is the closest
answer.
A patient weighs 88 lb. If an order is written to deliver 0.25 mg/kg, what dosage of medication
would be administered to the patient?
22 mg
10 mg
40 mg
44 mg -CORRECT->>b. 10 mg. You need to convert the weight from pounds to kilograms: 1 kg
= 2.2 lbs. so 88/2.2 = 40 kg. The order reads 0.25 mg/kg of body weight. Multiply 40 kg by 0.25
to give you the answer of 10 mg to be administered.
BANK. COMPLETE QUESTIONS AND ANSWERS
ALREADY GRADED A+.
A patient with a tidal volume of 400 milliliters has a tidal volume of how many liters?
40
4
.400
.04 -CORRECT->>.400L
A patient who weighs 55 kilograms is to receive a drug dosage of 10mg/kg. How much drug
should be administered?
550 mg
250 mg
25 mg
5.5 mg -CORRECT->>550 mg. To determine the dosage to administer, simply multiply 55 kg by
10 mg (55 kg x 10 mg = 550 mg).
A solution of drug contains 80 units/ml. How many milliliters would you need to deliver 320 units
of the drug?
0.4 ml
4 ml
14 ml
40 ml -CORRECT->>4 ml. Refer to example calculation 8 in the textbook to set up your
calculation and solve for X.
A medication bag contains 0.03 liters. This is equal to how many milliliters?
3
30
300
3,000 -CORRECT->>30. Refer to Table 2-2 to convert from liters to milliliters.
Vorozole is supplied in a powder form that must be mixed with normal saline or sterile water
prior to nebulization. This type of solution represents a:
Solid/solvent Weight/volume Liquid/solute
Volume/volume -CORRECT->>Weight/volume. A drug solution that consists of the active drug
in solid (or powder) form mixed with a liquid solvent is considered a weight/volume solution.
How much active drug is in 3 ml of a 10% solution?
0.3 g
1g
0.3 mg
,1 mg -CORRECT->>0.3 g. By definition (%solution = g). Solve: 3 x .10 = 0.3
A rescue dosage of surfactant calls for 3 ml/kg body weight. If a premature infant weighs 1,500
g, how many milliliters are needed?
5.0 ml
9.0 ml
0.45 ml
4.5 ml -CORRECT->>4.5 ml. You first convert the baby's weight from grams to kilograms. Then
you determine how many milliliters are needed if the required dosage is 3 ml per kilogram by
multiplying 3 by the weight in kg (3 ml x 1.5 kg).
What strength of drug would be administered if 6 g of active ingredient is reconstituted with
sterile water to a total volume of 300 ml?
2% strength
0.5% strength
20% strength
50% strength -CORRECT->>2% strength. 6 g of active ingredient in 300 ml represents 2 g for
every 100 ml, which is a 2% solution.
Normal saline in solution with albuterol is known as the solvent.
True
False -CORRECT->>True. A solution contains an active drug, which is the solute dissolved in a
solvent, such as sterile water or normal saline.
When calculating drug dosages based on a patient's weight in kilograms, a respiratory therapist
can use the BSA nomogram to convert from pounds to kilograms.
True
False -CORRECT->>False. The nomogram used to determine body surface area (BSA)
combines height and weight in a single measurement to determine a patient's overall body size.
If a drug dosage requires a specific number of units per patient weight in kilograms, the factor-
label method should be used to convert the patient's weight from the English system to the
metric system.
How many mg of active ingredient is there in 3 mL of a 0.083% solution of albuterol? -
CORRECT->>3 x .83mg = 2.49 mg (convert 0.083g to .83mg)
A metaproterenol sulfate unit dose contains 2.5 mL of a 0.6% solution. How many milligrams of
active ingredient are present in this unit dose? -CORRECT->>2.5 x 6mg = 15 mg (convert 0.6g
to 6mg)
If a drug order is written for 0.25 mg/kg of body weight, what dosage would be administered to a
patient weighing 88 lb.? -CORRECT->>88/2.2=40, 40 x .25 = 10mg
,The physician order reads "Administer 5 mg metaproterenol via inhalation route with a small
volume nebulizer." How many milliliters of a 1% solution should be used? -CORRECT->>5 x .1
= 0.5 mL
A dosage of 4 mg of morphine sulfate is ordered for a patient. How many milliliters of the
morphine solution needs to be taken from a vial of the medicine that contains 10 mg/ml? -
CORRECT->>4 x .10 = 0.4 mL
You are to administer 0.075 g of a medication labeled: "25 mg per mL." How much solution (mL)
needs to be taken out of the vial to administer the prescribed dosage? -CORRECT->>.75/.25 =
3 mL
A drug's dosage strength is available in a 1% solution. How many milliliters (mL) of drug are
required to deliver a 5 mg dose to a patient? -CORRECT->>5 x .1 = 0.5 mL
A drug is available as a 20 mg/3 mL solution. What is the percent strength (percent solution)? -
CORRECT->>2.0/3 = 0.67%
The drug dornase alfa has been ordered for a patient with cystic fibrosis. A single 2.5 mL
ampule contains a 2.5 mg dose. What is the percent solution of this medication? -CORRECT-
>>2.5/2.5 = 0.1%
An adult female patient weighs 125 lb. The dosage schedule for her medication calls for 5
mg/Kg body weight. How many mg of medication does this patient require? -CORRECT-
>>125/2.2 = 56.81 kg x 5mg = 284 mg
A physician orders 6mL of a 20% Mucomyst solution. Your department only carries the 10%
Mucomyst solution. How many mL of 10% Mucomyst must be given to equal the same dose of
the 20% Mucomyst? [Hint: Find the number of mg for the 20% solution first. Then find the
number of mL of the 10% solution to get that number of mg] -CORRECT->>6 x .20 = 1.2,
1.2/.10 = 12 mL
Which statement is false concerning writing numbers in health-care documentation?
Recommendations about proper technique in writing numbers are made by the JCAHO.
A 0 should always follow a decimal point.
Following general guidelines when writing numbers can help prevent medication errors.
Any decimal number should always be preceded by a 0. -CORRECT->>b. A 0 should never
follow a decimal point, because the decimal may be looked over and too high of a dose may be
administered.
The metric system is based upon exponential powers of:
100
1,000
10
, 10,000 -CORRECT->>c. 10
A patient with a tidal volume of 0.4 l, has a tidal volume of how many milliliters?
0.04 ml
0.004 ml
40 ml
400 ml -CORRECT->>d. 400 ml is the equivalent of 0.4 l based upon converting within the
metric system.
A patient who weighs 121 lbs. is to receive a drug dosage of 10 mg/kg. How much drug should
be administered?
250 mg
550 mg
5.5 mg
25 mg -CORRECT->>b. 550 mg. At 10 mg/kg, the given weight of 121 lbs. should be converted
to 55 kg and should then be multiplied by 10, because for every kilogram of weight, 10 mg of
medication should be given.
A patient is 167 cm tall. How many inches tall is the patient?
60 in.
66 in.
56 in.
86 in. -CORRECT->>b. 66 in. There are 2.54 cm in 1 in. Divide 167 by 2.54. The answer is
65.75. Of the answer choices provided, 66 in. is the closest.
What is the length of a newborn in inches if the patient is measured at 45.7 cm in length?
20 in.
19 in.
18 in.
17 in. -CORRECT->>c. 18 in. 2.54 cm = 1 in. 45.7 cm/2.54 cm = 17.99 in. 18 in. is the closest
answer.
A patient weighs 88 lb. If an order is written to deliver 0.25 mg/kg, what dosage of medication
would be administered to the patient?
22 mg
10 mg
40 mg
44 mg -CORRECT->>b. 10 mg. You need to convert the weight from pounds to kilograms: 1 kg
= 2.2 lbs. so 88/2.2 = 40 kg. The order reads 0.25 mg/kg of body weight. Multiply 40 kg by 0.25
to give you the answer of 10 mg to be administered.
