FREE LPN: Pharmacological Therapies Questions and Answers

Question 1

The health care professional (HCP) recommends injecting 1 L of D5/0.9% NS over the course of 8 hours. What should the infusion pump's hourly rate be?

Accepted Answer

125 mL/hr

Answer

To calculate the hourly infusion rate, you divide the total volume to be infused by the total time in hours. First, convert 1 liter (L) to milliliters (mL), which is 1000 mL. Then, divide 1000 mL by 8 hours. This calculation yields an hourly rate of 125 mL/hr, ensuring the medication is delivered over the prescribed duration.

Question 2

The LPN/LVN is getting ready to give a patient 0.1 mg SC of a STAT drug. One gram of medication is included in one thousand milliliters of solution in the vial. How much medication will the nurse inject into the syringe?

Accepted Answer

0.1 mL

Answer

First, convert the concentration in the vial to a consistent unit: 1 gram (g) is 1000 milligrams (mg), so 1000 mg in 1000 mL means the solution is 1 mg/mL. The ordered dose is 0.1 mg. To find the volume to inject, use the formula: (Desired Dose / Concentration) = Volume. Therefore, (0.1 mg / 1 mg/mL) = 0.1 mL.

Question 3

A new prescription for levothyroxine 150 mcg PO daily is sent to a patient. The pharmacy sends 0.1 mg pills of levothyroxine. What number of tablets will the nurse give out?

Accepted Answer

1.5 tablets

Answer

To determine the number of tablets, first ensure both the ordered dose and the available tablet strength are in the same units. The ordered dose is 150 mcg. The available tablets are 0.1 mg, which converts to 100 mcg (since 1 mg = 1000 mcg). Divide the desired dose by the available dose per tablet: 150 mcg / 100 mcg/tablet = 1.5 tablets.

Question 4

The treatment with levodopa for a patient who has Parkinson's disease has begun. The nurse informs the patient that they will begin to see the expected outcomes in

Accepted Answer

2 to 3 weeks

Answer

Levodopa, a medication used to treat Parkinson's disease, works by converting into dopamine in the brain, helping to alleviate motor symptoms. However, its therapeutic effects are not immediate; it typically takes time for the medication to build up and for the patient's body to respond. Patients can generally expect to begin seeing noticeable improvements in their symptoms gradually over a period of 2 to 3 weeks.

Question 5

Which of the following drugs is related to the toxicity sign of "ringing in the ears," as described by a patient to the nurse?

Accepted Answer

aspirin

Answer

Tinnitus, commonly described as 'ringing in the ears,' is a well-known and classic symptom of aspirin toxicity, particularly when taken in higher doses. This ototoxicity is a significant indicator of potential salicylate poisoning. Nurses must recognize this symptom as a crucial warning sign and report it promptly to the healthcare provider.

LPN - Licensed Practical Nurse Practice Test

LPN - Licensed Practical Nurse Practice Test

FREE LPN: Pharmacological Therapies Questions and Answers