NR565 Week 4 Midterm Exam - Chamberlain University
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Free NR565 Week 4 Midterm Exam - Chamberlain University Questions
The NP prescribes a medication that is poorly soluble in water and needs to be released slowly over time. Which route of administration would BEST meet these criteria?
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Intravenous (IV)
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Intramuscular (IM)
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Oral (PO)
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Subcutaneous (subQ)
Explanation
Explanation:
Correct Answer: (B) Intramuscular (IM)
Intramuscular administration is well-suited for medications that are poorly water-soluble and require slow, sustained release, as the muscle tissue can form a depot from which the drug is gradually absorbed into systemic circulation. This route allows poorly soluble formulations, such as certain depot injections, to provide prolonged therapeutic effects over an extended period.
Why Other Options are Incorrect:
A. Intravenous (IV) IV administration delivers medication directly into the bloodstream for immediate systemic effect and requires the drug to be soluble in an aqueous solution, making it unsuitable for poorly water-soluble drugs needing slow release.
C. Oral (PO) Oral administration does not provide the controlled, sustained depot release achievable with intramuscular injection for poorly soluble compounds, and absorption can be more variable.
D. Subcutaneous (subQ) While subcutaneous administration can also provide slower absorption, intramuscular tissue has greater blood flow and is generally better suited for larger volumes and poorly soluble depot formulations requiring slow release.
The management of tuberculosis (TB) is more complex in patients with HIV co-infection compared to immunocompetent patients because:
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TB treatment in HIV patients is always completed within a shorter time frame
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Rifampin enhances the effectiveness of protease inhibitors and NNRTIs
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Drug interactions between TB medications and HIV antiretrovirals limit treatment options
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HIV completely prevents the immune system from responding to TB infection
Explanation
Explanation:
Correct Answer: (C) Drug interactions between TB medications and HIV antiretrovirals limit treatment options Rifampin, a key TB drug, induces liver enzymes that significantly reduce the effectiveness of many antiretroviral drugs, creating complex interactions that require careful medication selection and timing.
Why Other Options are Incorrect:
A. TB treatment in HIV patients is always completed within a shorter time frame — Treatment in co-infected patients is often longer or more complicated, not shorter.
B. Rifampin enhances the effectiveness of protease inhibitors and NNRTIs — Rifampin actually decreases the effectiveness of these drugs by inducing their metabolism.
D. HIV completely prevents the immune system from responding to TB infection — HIV weakens but does not completely eliminate the immune response to TB.
A patient using an inhaled glucocorticoid develops oral candidiasis. Which is the BEST initial management strategy to minimize future risk while continuing therapy?
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Reduce the dose to subtherapeutic levels to prevent recurrence
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Switch to a long-acting β2 agonist as monotherapy
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Discontinue the inhaled glucocorticoid immediately
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Treat with an antifungal and add a spacer device
Explanation
Explanation:
Correct Answer: (D) Treat with an antifungal and add a spacer device Oral candidiasis from inhaled corticosteroids should be treated with an antifungal agent, and using a spacer device reduces oropharyngeal deposition of the drug, decreasing the risk of recurrence while allowing continued therapy.
Why Other Options are Incorrect:
A. Reduce the dose to subtherapeutic levels to prevent recurrence — Lowering the dose below therapeutic levels compromises asthma control and is not an appropriate solution.
B. Switch to a long-acting β2 agonist as monotherapy — LABA monotherapy is unsafe in asthma and does not address the underlying inflammation or the candidiasis issue.
C. Discontinue the inhaled glucocorticoid immediately — Stopping therapy is unnecessary, as the candidiasis can be managed while continuing the needed anti-inflammatory treatment.
When guiding patients to safe and evidence-based information on complementary and alternative therapies, which resource is the MOST appropriate?
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Social media sources with the highest followers
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International Folk Medicine databases
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Single-source literature in support of alternative therapies
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Government sources such as the National Center for Complementary and Integrative Health
Explanation
Explanation:
Correct Answer: (D) Government sources such as the National Center for Complementary and Integrative Health Government-run resources like NCCIH provide rigorously reviewed, evidence-based information on complementary and alternative therapies, making them the most reliable and appropriate source for patient guidance.
Why Other Options are Incorrect:
A. Social media sources with the highest followers — Popularity does not equate to accuracy or evidence-based content, and these sources are often unreliable.
B. International Folk Medicine databases — These may lack rigorous scientific evaluation and standardized evidence review.
C. Single-source literature in support of alternative therapies — Relying on a single, potentially biased source does not provide a balanced, evidence-based perspective.
Which of the following patient education points is MOST appropriate for a patient starting salmeterol (Serevent Diskus) therapy for asthma?
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Use salmeterol (Serevent Diskus) in combination with an inhaled glucocorticoid
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Always take salmeterol (Serevent Diskus) with a spacer device
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Use salmeterol (Serevent Diskus) PRN for acute symptom relief
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Take salmeterol (Serevent Diskus) only if symptoms are severe
Explanation
Explanation:
Correct Answer: (A) Use salmeterol (Serevent Diskus) in combination with an inhaled glucocorticoid
Salmeterol is a long-acting beta agonist (LABA) that must always be used in combination with an inhaled corticosteroid, as LABA monotherapy increases the risk of severe asthma exacerbations and asthma-related death.
Why Other Options are Incorrect:
B. Always take salmeterol (Serevent Diskus) with a spacer device — Salmeterol is delivered via a dry powder inhaler (Diskus), which does not require or use a spacer device.
C. Use salmeterol (Serevent Diskus) PRN for acute symptom relief — Salmeterol is a long-acting agent not intended for acute rescue use; it has a slower onset unsuitable for immediate symptom relief.
D. Take salmeterol (Serevent Diskus) only if symptoms are severe — Salmeterol should be used on a regular scheduled basis as a maintenance therapy, not intermittently based on symptom severity.
A patient with type 2 diabetes (T2D) is prescribed a new oral antidiabetic drug. The NP recalls that this medication should be used with caution in patients taking repaglinide (Prandin) with gemfibrozil (Lopid). The reason for this caution is:
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Increased risk of pancreatitis from elevated triglyceride levels
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Increased risk of severe hypoglycemia due to drug interaction
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Increased risk of hepatotoxicity due to altered hepatic metabolism
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Decreased therapeutic effect from competitive receptor binding
Explanation
Explanation:
Correct Answer: (B) Increased risk of severe hypoglycemia due to drug interaction Gemfibrozil significantly inhibits the CYP2C8 enzyme responsible for metabolizing repaglinide, leading to markedly increased repaglinide plasma levels and a substantially heightened risk of severe, prolonged hypoglycemia when the two drugs are used together.
Why Other Options are Incorrect:
A. Increased risk of pancreatitis from elevated triglyceride levels — This interaction is not related to triglyceride levels or pancreatitis risk; it specifically involves altered drug metabolism affecting blood glucose control.
C. Increased risk of hepatotoxicity due to altered hepatic metabolism — While the interaction does involve hepatic enzyme metabolism, the clinically significant risk is hypoglycemia from increased repaglinide levels, not direct hepatotoxicity.
D. Decreased therapeutic effect from competitive receptor binding — This is incorrect, as the interaction actually increases (not decreases) repaglinide's effect due to reduced metabolism, not competitive receptor binding.
The NP is reviewing medications on a patient who takes saw palmetto for symptoms of benign prostatic hypertrophy. When taken with saw palmetto, which medication on the patient's medication list should indicate the need for more caution?
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Amoxicillin/clavulanic acid (Augmentin)
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Omeprazole (Prilosec)
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Fluoxetine (Prozac)
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Warfarin (Coumadin)
Explanation
Explanation:
Correct Answer: (D) Warfarin (Coumadin) Saw palmetto has antiplatelet properties and may increase the risk of bleeding when combined with anticoagulants like warfarin, warranting increased caution and monitoring.
Why Other Options are Incorrect:
A. Amoxicillin/clavulanic acid (Augmentin) — There is no significant interaction between saw palmetto and this antibiotic.
B. Omeprazole (Prilosec) — No clinically significant interaction exists between saw palmetto and proton pump inhibitors.
C. Fluoxetine (Prozac) — There is no established significant bleeding or interaction risk between saw palmetto and this SSRI.
Which of the following statements is TRUE regarding nonphysician providers and prescriptive authority?
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Prescriptive authority for nonphysician providers is often limited by required oversight from an MD or DO
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Nonphysician providers can prescribe schedule I drugs if supervised by a physician
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All nonphysician providers have full prescriptive authority
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Nonphysician providers are not legally permitted to prescribe any medications
Explanation
Explanation:
Correct Answer: (A) Prescriptive authority for nonphysician providers is often limited by required oversight from an MD or DO
In many states and practice settings, nonphysician providers, such as nurse practitioners and physician assistants, are subject to collaborative or supervisory agreements requiring oversight from a physician (MD or DO) in order to prescribe medications. This reflects the reality that prescriptive authority varies significantly and is frequently restricted rather than fully independent, depending on state regulations.
Why Other Options are Incorrect:
B. Nonphysician providers can prescribe schedule I drugs if supervised by a physician Schedule I substances are classified as having no accepted medical use and are not legally prescribable by any provider, regardless of physician supervision.
C. All nonphysician providers have full prescriptive authority This is inaccurate, as prescriptive authority varies widely by state and provider type, with many nonphysician providers subject to restrictions rather than possessing full independent authority.
D. Nonphysician providers are not legally permitted to prescribe any medications This is factually incorrect, as many nonphysician providers, including NPs and PAs, are legally permitted to prescribe medications within their scope of practice, often including controlled substances under appropriate regulations.
A patient with type 2 diabetes (T2D), hypertension, and early nephropathy asks about blood pressure goals. According to American Diabetes Association (ADA) 2023 recommendations, which target is appropriate for MOST patients?
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≤130/80 mm Hg
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≤125/75 mm Hg
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<140/90 mm Hg
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<135/85 mm Hg
Explanation
Explanation:
Correct Answer: (A) ≤130/80 mm Hg
The ADA 2023 guidelines recommend a blood pressure target of less than 130/80 mmHg for most patients with diabetes and hypertension, particularly those with additional cardiovascular risk factors like early nephropathy, to reduce the risk of cardiovascular and renal complications.
Why Other Options are Incorrect:
B. ≤125/75 mm Hg — This target is too aggressive and not the standard ADA recommendation for most patients.
C. <140/90 mm Hg — This is a less stringent, older target that does not reflect the more current ADA 2023 recommendation for most diabetic patients, especially those with nephropathy.
D. <135/85 mm Hg — This is not the specific target recommended by ADA 2023 guidelines for this patient population.
A patient using a metered-dose inhaler is instructed to take two puffs of albuterol (Pro-Air/Ventolin). Which is the correct administration technique?
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Wait at least 10 minutes between puffs
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Wait at least 1 minute between puffs
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Take both puffs back-to-back without waiting
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Use the second puff only if the first does not provide relief
Explanation
Explanation:
Correct Answer: (B) Wait at least 1 minute between puffs Waiting at least 1 minute between puffs allows the airways to open from the first dose, improving the deposition and effectiveness of the second puff.
Why Other Options are Incorrect:
A. Wait at least 10 minutes between puffs — This interval is unnecessarily long and not the standard recommendation for spacing inhaler puffs.
C. Take both puffs back-to-back without waiting — This reduces the effectiveness of the second puff since the airways have not had time to respond to the first dose.
D. Use the second puff only if the first does not provide relief — Two puffs are typically prescribed as the standard dose, not administered conditionally based on relief from the first puff.
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