A patient has been taking lithium for 1 year, and the most recent lithium level is 0.9 mEq/L. Which statement about the laboratory result is correct?

The lithium level is too low

The lithium level is therapeutic

Lithium is not usually monitored with blood levels

The lithium level is too high

Answer and Explanation

The Correct Answer is B

A. A lithium level of 0.9 mEq/L falls within the therapeutic range for lithium, so it is not too low.

B.   A lithium level of 0.9 mEq/L is within the therapeutic range for lithium maintenance therapy, which typically ranges from 0.6 to 1.2 mEq/L. Therefore, it is considered therapeutic.
C.   Lithium is commonly monitored with blood levels to ensure therapeutic efficacy and to prevent toxicity.
D.   A lithium level of 0.9 mEq/L is not too high; it is within the therapeutic range.

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Correct Answer is ["50"]

Explanation

Gtt/min= Volume per hour× Drop factor/ Time in minutes per hour Given:

Volume per hour = 150 mL Drop factor = 20 gtt/mL

Time in minutes per hour = 60 minutes Gtt/min= 150mL/hr×20gtt/mL/60min/hr Gtt/min=50
Therefore, the nurse should set the manual IV infusion to deliver 50 gtt/min

A. Carbidopa prevents the breakdown of levodopa in the periphery. B. Carbidopa is the biologic precursor of dopamine and can penetrate into the central nervous system. C. Carbidopa allows for larger doses of levodopa to be given. D. There are concerns about drug-food interactions with levodopa therapy that do not exist with the combination therapy.

Correct Answer is A

Explanation

A. Carbidopa prevents the breakdown of levodopa in the periphery, specifically in the gastrointestinal tract and peripheral tissues, allowing more levodopa to reach the brain and be converted to dopamine. This enhances the effectiveness of levodopa therapy in managing the symptoms of Parkinson's disease.
B. Carbidopa is not the biologic precursor of dopamine. It is a peripheral decarboxylase inhibitor that does not cross the blood-brain barrier.
C. Carbidopa does not directly allow for larger doses of levodopa to be given. However, by

inhibiting the peripheral breakdown of levodopa, it enhances the availability of levodopa to the central nervous system, potentially improving therapeutic efficacy.
D. While levodopa-carbidopa combination therapy may have fewer drug-food interactions compared to levodopa alone, the primary reason for combining these medications is to enhance the effectiveness of levodopa by preventing its peripheral breakdown.

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A patient has been taking lithium for 1 year, and the most recent lithium level is 0.9 mEq/L. Which statement about the laboratory result is correct?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Correct Answer is ["50"]

Explanation

A patient has been given a prescription for levodopa-carbidopa for a new diagnosis of Parkinson's disease. The patient asks the nurse, "Why are there two drugs in this pill?" The nurse's best response reflects which fact?

Correct Answer is A

Explanation

The opioid acetaminophen/hydrocodone is prescribed for a patient who has had surgery. The nurse informs the patient that which common adverse effects can occur with this medication? (Select all that apply.)

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A patient has been taking lithium for 1 year, and the most recent lithium level is 0.9 mEq/L. Which statement about the laboratory result is correct?

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