A patient on lithium therapy requires a dose of 600 mg per day divided into two doses using available tablets of 300 mg each. How should the nurse plan the administration?
3 tablets per dose, twice a day
2 tablets per dose, once a day
1 tablet per dose, twice a day
Half tablet per dose, twice a day
The Correct Answer is C
Choice A reason: Administering 3 tablets per dose twice a day would result in a total daily dose of 1,800 mg (900 mg per dose). This significantly exceeds the 600 mg daily prescription and would likely lead to acute lithium toxicity, characterized by severe tremors, ataxia, and potential renal failure.
Choice B reason: This plan provides 600 mg in a single administration. While the total daily amount is correct, the order specifically requires the dose to be divided into two administrations. Dividing the dose helps maintain steady-state serum levels and minimizes peak-dose side effects associated with high single-dose lithium concentrations.
Choice C reason: The total daily dose is 600 mg. To divide this into two equal doses, 300 mg must be given at each interval. Since each tablet contains 300 mg, administering 1 tablet in the morning and 1 tablet in the evening accurately fulfills the physician's pharmacological order for the patient.
Choice D reason: A half tablet would provide only 150 mg per dose, totaling 300 mg per day. This is only half of the required 600 mg daily dose. Subtherapeutic lithium levels are ineffective for stabilizing mood in bipolar disorder and increase the risk of the patient experiencing a manic episode.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Administering anxiolytic medications like benzodiazepines may provide temporary symptomatic relief of anxiety but fails to address the environmental root cause. Pharmacological intervention is secondary to resolving the psychosocial stressors that are actively destabilizing the client's mental health status and preventing long term recovery or therapeutic progress.
Choice B reason: Referring to social services is the priority intervention because it addresses the fundamental physiological and safety needs according to Maslow's hierarchy. Securing stable housing is a critical social determinant of health that must be resolved to reduce the external triggers causing the client's psychological distress and instability.
Choice C reason: Monitoring dietary intake is a standard nursing action for overall health maintenance but is not the priority when a client is facing a crisis of homelessness. While nutrition impacts neurobiology, it does not mitigate the acute anxiety stemming from the lack of a secure and safe living environment.
Choice D reason: Increasing the frequency of therapy sessions may help the client develop coping mechanisms for stress, but these interventions are less effective if the client's basic need for shelter is unmet. Psychotherapy cannot substitute for the tangible resources required to resolve housing instability and environmental safety concerns.
Correct Answer is B
Explanation
Choice A reason: Initiating redundant diagnostic investigations for a patient diagnosed with somatic symptom disorder often exacerbates the pathology by reinforcing the client's preoccupation with physical illness. Repeated testing can lead to unnecessary medical trauma, increased healthcare costs, and the accidental discovery of incidentalomas, which further fuels health-related anxiety.
Choice B reason: The primary therapeutic objective in somatic symptom disorder is functional improvement rather than the total elimination of physical sensations. By focusing on symptom management and enhancing the quality of daily life, clinicians help patients develop coping mechanisms that reduce the disability associated with their perceived physical distress.
Choice C reason: While psychiatric consultation is often beneficial, an immediate referral without establishing a therapeutic alliance or explaining the rationale can feel like abandonment to the patient. Effective management typically involves a collaborative approach where the primary clinician maintains regular contact to provide a sense of security and validation.
Choice D reason: Simple reassurance that nothing is wrong is frequently perceived by the patient as a dismissal of their genuine suffering. Patients with this disorder experience real pain and discomfort; therefore, telling them they have nothing to worry about invalidates their subjective experience and often causes them to seek other providers.
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