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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?

A.

The lithium level is too low

B.

The lithium level is therapeutic

C.

Lithium is not usually monitored with blood levels

D.

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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Related Questions

Correct Answer is A

Explanation

A. Decreased weight: Orlistat is a medication used for weight management by inhibiting the absorption of dietary fats. Its intended therapeutic effect is to promote weight loss by reducing the amount of fat absorbed from the diet.
B. Increased appetite: Orlistat does not increase appetite; rather, it may help control appetite by promoting satiety through its mechanism of action.
C. Decreased hyperactivity: Orlistat is not indicated for the treatment of hyperactivity.

D. Increased wakefulness: Orlistat does not affect wakefulness; it primarily acts in the gastrointestinal tract to inhibit fat absorption.

Correct Answer is B

Explanation

A. Signs of bone marrow depression are not typically associated with antiepileptic drugs. This adverse effect is more commonly seen with medications such as chemotherapy agents.
B. Increased risk of suicidal thoughts and behaviors is a well-documented concern with antiepileptic drugs, particularly when used for psychiatric indications or in certain patient populations. The FDA has issued warnings regarding this risk, and healthcare providers should monitor patients for changes in mood, behavior, and suicidal ideation.
C. While some antiepileptic drugs may have cardiovascular effects, such as prolongation of the QT interval, the FDA warning specifically highlights the risk of suicidal thoughts and behaviors rather than cardiovascular events like strokes.

D. Indications of drug addiction and dependency are not typically associated with antiepileptic drugs. These medications are not central nervous system depressants and do not produce the euphoria or withdrawal symptoms characteristic of addictive substances.

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