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ATI Pharmacology Test Bank
1. When should a blood sample be obtained for a peak serum level of gentamicin when administered by IV infusion for 1 hour at 0900?
- A. 1000
- B. 1030
- C. 1100
- D. 1130
Correct answer: B
Rationale: The nurse should obtain the blood sample for the peak serum level at 1030. This timing allows for 30 minutes to elapse after the completion of the 1-hour IV infusion, which is the recommended window for obtaining the peak serum level of gentamicin.
2. A healthcare provider is reviewing the health care record of a client who reports urinary incontinence and asks about a prescription for Oxybutynin. The healthcare provider should recognize that Oxybutynin is contraindicated in the presence of which of the following conditions?
- A. Bursitis
- B. Sinusitis
- C. Depression
- D. Glaucoma
Correct answer: D
Rationale: Oxybutynin is an anticholinergic medication that can increase intraocular pressure. It is contraindicated in clients with glaucoma due to the potential to worsen the condition by further elevating intraocular pressure, leading to harm. Choosing option D, Glaucoma, as the correct answer is crucial for the client's safety and to prevent exacerbation of their eye condition. Options A, B, and C are not contraindications for Oxybutynin use and are unrelated to the pharmacological effects of this medication.
3. When caring for a client prescribed warfarin, which laboratory test should the nurse monitor to evaluate the therapeutic effect of the medication?
- A. aPTT
- B. Platelet count
- C. BUN
- D. PT/INR
Correct answer: D
Rationale: The correct laboratory test to monitor the therapeutic effect of warfarin is the PT/INR. Warfarin affects blood clotting, and the PT/INR levels indicate the effectiveness of the medication in preventing clot formation. Therefore, monitoring PT/INR levels helps ensure that the client is within the therapeutic range and is protected from potential complications related to clotting. Choice A (aPTT) is incorrect because while it measures the clotting time, it is not the preferred test for monitoring warfarin therapy. Choice B (Platelet count) is incorrect as it assesses the number of platelets and not the medication's therapeutic effect. Choice C (BUN) is unrelated to monitoring the effects of warfarin therapy and is primarily used to assess kidney function.
4. A client informs the nurse that she has difficulty swallowing tablets and struggles with liquid or chewable medications due to taste. What medication should the nurse request a prescription for when preparing to administer Penicillin V to treat the client's streptococcal infection?
- A. Fosfomycin
- B. Amoxicillin
- C. Nafcillin
- D. Cefaclor
Correct answer: C
Rationale: Nafcillin is an appropriate alternative within the penicillin class for clients who have difficulty swallowing tablets or struggle with liquid or chewable medications. It is available for intramuscular (IM) or intravenous (IV) administration, offering options beyond oral formulations. Fosfomycin, Amoxicillin, and Cefaclor are not suitable alternatives for Penicillin V in this scenario as they belong to different classes of antibiotics and may not be as effective in treating streptococcal infections.
5. What symptom would alert the healthcare professional to hold Albuterol and notify a healthcare professional immediately?
- A. Insomnia
- B. Paradoxical bronchospasm
- C. Nausea
- D. Headache
Correct answer: B
Rationale: If a patient experiences paradoxical bronchospasm after taking Albuterol, the medication should be withheld, and a healthcare professional should be notified immediately. Paradoxical bronchospasm is a serious adverse reaction where the airways constrict instead of dilating, leading to breathing difficulties. This condition requires prompt medical attention to assess and manage the patient's respiratory status. The other options, insomnia, nausea, and headache, are not typically associated with the need to hold Albuterol and notify a healthcare professional immediately.
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