The nurse informs the patient to remain well hydrated while taking lithium because dehydration can lead to:
Lithium toxicity
Increased effectiveness
The need to increase the lithium dosage
Lower serum lithium levels
The Correct Answer is A
A. Lithium toxicity can occur if the patient becomes dehydrated while taking lithium, as dehydration can lead to higher concentrations of lithium in the blood.
B. Increased effectiveness is not a consequence of dehydration while taking lithium.
C. Dehydration would not typically lead to the need to increase the lithium dosage but rather to the risk of toxicity.
D. Dehydration can lead to higher, not lower, serum lithium levels, increasing the risk of toxicity.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Hearing loss is not a common adverse effect of phenelzine (Nardil).
B. Orthostatic hypotension is a common adverse effect of phenelzine due to its monoamine oxidase inhibitor (MAOI) activity, leading to decreased blood pressure upon standing.
C. Weight loss is not a common adverse effect of phenelzine and may be more indicative of other factors or conditions.
D. Gastrointestinal bleeding is not a common adverse effect of phenelzine.
Correct Answer is C
Explanation
A. Placing three tablets under the tongue at once is not the recommended initial dosing for nitroglycerin.
B. Nitroglycerin tablets should not be swallowed; they are meant to be taken sublingually (under the tongue) for quick absorption.
C. This is the correct instruction, reflecting the standard protocol for acute angina treatment with nitroglycerin: one tablet under the tongue every 5 minutes as needed, with no more than three tablets in 15 minutes. If pain persists, it is advised to call emergency services.
D. This instruction is inappropriate as it delays immediate treatment for chest pain, which can be critical in the event of acute angina or a heart attack.
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