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Calculating Drug Dosages
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Calculating Drug Dosages
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Test Bank for Calculating Drug Dosages: A Patient-Safe Approach To Nursing And Math 2nd Edition By Sandra Luz Martinez De Castillo And Maryanne Werner-Mccullough ISBN 9780803624962 Chapter 1-22 | Comp...
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Calculating Drug Dosages: A Patient-Safe Approach toNursing and Math 2nd Edition TEST BANK by Castillo
A patient with a tidal volume of 400 milliliters has a tidal volume of how many liters?
40
4
.400
.04 - ANSWER:.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 - ANSWER: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 - ANSWER: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 - ANSWER:30. Refer to Table 2-2 to convert from liters to milliliters.
Virazole 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 - ANSWER: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 - ANSWER: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 - ANSWER: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 - ANSWER: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 - ANSWER: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 - ANSWER: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 are there in 3 mL of a 0.083% solution of
albuterol? - ANSWER:3 x .83mg = 2.49 mg (convert 0.083g to .83mg)
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