ATI LPN Pharmacology Exam | Nurselytic

Correct Answer: B

Rationale: The correct answer is B: 30 mL/hr.
To calculate the flow rate, first convert 2 g of lidocaine to mL using the drug concentration.
Then divide by the time in hours. The other choices are incorrect because they do not correctly calculate the flow rate based on the given information.
Choice A is the initial volume, not the flow rate.

Choices C, D, and E are incorrect calculations based on incorrect conversions or misinterpretations of the question.

Correct Answer: C

Rationale: The correct answer is C. Antacids can interfere with the absorption of digoxin if taken simultaneously, leading to decreased drug effectiveness. Instructing the client to take the antacid at least 2 hours before or after digoxin administration helps avoid this interaction.
Choice A is incorrect because taking antacids with digoxin directly may not be advisable.
Choice B is incorrect as it oversimplifies the potential interaction between digoxin and antacids.
Choice D is incorrect as it correctly identifies the interaction but does not provide a practical solution.

Correct Answer: C

Rationale: The correct answer is C: 4 mL.
To calculate the dosage of Bumex (bumetanide) 1 mg IV daily, we need to use the formula: Dosage = Amount needed (mg) / Amount available (mg/mL). In this case, 1 mg / 0.25 mg/mL = 4 mL.
Therefore, the correct dosage is 4 mL.
Choice A (3 mL) is incorrect because it does not provide the accurate amount needed for the 1 mg dose.
Choice B (2 mL) is also incorrect as it underestimates the required dosage.
Choice D (6 mL) is incorrect as it overestimates the amount needed for the 1 mg dose.

Correct Answer: B

Rationale: The correct answer is B: 0.06 g. The prefix "centi-" in the metric system represents one-hundredth, so "hundredth" corresponds to the centi- prefix.
Therefore, to express six hundredth correctly, it should be written as 0.06 g.
Choice A is incorrect because it represents 600 grams, which is not the correct unit for six hundredth.
Choice C is incorrect as it represents 0.006, which is one thousandth, not hundredth.
Choice D is incorrect as it represents 0.6 grams, which is six tenths, not hundredths.

Correct Answer: D

Rationale:
To find the total volume in mL to be administered in 24 hours, we first calculate the volume for each dose: 2/3 strength Ensure is 6 oz, which is 177.441 mL. Administered every 4 hours for 24 hours gives us 6 doses. Multiplying 177.441 mL by 6 doses equals 1064.646 mL. Rounding up to the nearest whole number, the total volume to administer in 24 hours is 1080 mL, which is option D. Other choices are incorrect because they do not accurately calculate the total volume needed based on the given information.