Nokea
The following drugs exert their effects by binding to receptors and mimicking the effects of the endogenous ligand (i.e. are agonists):
- A. Tamoxifen
- B. Salbutamol
- C. Morphine
- D. Cetirizine
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
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A client is receiving vancomycin. Which of the following laboratory results should be monitored to evaluate the therapeutic effect of this medication?
- A. BUN
- B. Creatinine
- C. Hemoglobin
- D. White blood cell count
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
An adolescent male is newly diagnosed with schizophrenia. Which of the following antipsychotic agents may have the best chance to improve his apathy and blunted affect?
- A. Chlorpromazine
- B. Fluphenazine
- C. Haloperidol
- D. Risperidone
Correct Answer: D
Rationale: Risperidone, a second-generation antipsychotic, blocks D2 and 5HT2 receptors, improving positive symptoms (hallucinations) and, to some extent, negative symptoms like apathy and blunted affect, common in schizophrenia's prodrome. First-generation agents—chlorpromazine, fluphenazine, haloperidol—target D2 receptors, effectively reducing positive symptoms but often worsening negative symptoms via dopamine blockade in the prefrontal cortex. Thioridazine, also first-generation, has similar limitations. Risperidone's serotonin antagonism may enhance prefrontal dopamine release, offering a modest edge in addressing negative symptoms, supported by studies, making it preferable for this adolescent's presentation.
When teaching a client with a new prescription for Lithium, which instruction should the nurse include?
- A. Restrict fluid intake to 1,000 mL per day.
- B. Maintain a consistent sodium intake.
- C. Take the medication at bedtime.
- D. Expect to have frequent headaches.
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
A client in a coronary care unit is being admitted after CPR post cardiac arrest. The client is receiving IV lidocaine at 2 mg/min. When the client asks the nurse why he is receiving that medication, the nurse should explain that it has which of the following actions?
- A. Prevents dysrhythmias
- B. Slows intestinal motility
- C. Dissolves blood clots
- D. Relieves pain
Correct Answer: A
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
A client has a new prescription for Tetracycline. Which of the following instructions should be included?
- A. Take the medication with milk.
- B. Avoid prolonged sun exposure.
- C. Take the medication at bedtime.
- D. Expect urine to turn dark yellow.
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.