Which statement accurately describes patient tolerance to medications?
The patient will require a stable dose of the medication until the drug is discontinued.
Tolerance occurs when the liver or kidneys are no longer able to metabolize the drug.
The patient will continually require higher doses of the drug for the same effect to be achieved.
Tolerance only develops when the patients do not take the medication as it is prescribed.
The Correct Answer is C
Choice A rationale:
Incorrect. Patients who develop tolerance to a medication do not typically maintain a stable dose over time. Instead, they often require increasing doses to achieve the same effect.
Physiological adaptation: The body adapts to the presence of the medication, leading to a decreased response over time. This adaptation can occur at various levels, including receptor downregulation, changes in enzyme activity, or alterations in neurotransmitter release.
Individual variability: The rate and extent of tolerance development vary significantly among individuals, influenced by factors such as genetics, age, overall health, and medication type.
Choice B rationale:
Incorrect. Impaired liver or kidney function can affect drug metabolism and elimination, but this is not the primary mechanism of tolerance.
Metabolic impairment: Liver or kidney dysfunction can lead to drug accumulation in the body, potentially increasing the risk of side effects or toxicity. However, this does not necessarily cause tolerance, which is a specific phenomenon of decreased responsiveness to the medication's effects.
Choice C rationale:
Correct. This statement accurately describes the hallmark characteristic of tolerance.
Dose escalation: As tolerance develops, patients often require higher doses of the medication to achieve the same therapeutic effect. This can lead to a cycle of increasing doses and potential risks of adverse effects.
Clinical implications: Tolerance is a significant consideration in medication management, as it can affect treatment efficacy, adherence, and the risk of side effects.
Choice D rationale:
Incorrect. Tolerance can develop even when patients adhere strictly to their prescribed medication regimen. It is a physiological phenomenon that is not solely dependent on patient behavior.
Adherence vs. tolerance: While non-adherence can contribute to treatment failure, it is not the underlying cause of tolerance.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","C"]
Explanation
Choice A rationale:
Splinting the incision when coughing helps to minimize pain and discomfort, which can encourage deeper breathing and coughing. This is essential because deep breathing and coughing help to clear secretions from the lungs and prevent atelectasis (collapse of lung tissue).
Steps for splinting the incision:
Place a pillow or folded towel over the incision site.
Instruct the patient to apply gentle pressure to the pillow or towel with their hands when coughing or deep breathing. Encourage the patient to relax their abdominal muscles during coughing and deep breathing exercises.
Choice B rationale:
Sitting up in a chair and ambulating promote lung expansion and help to mobilize secretions. This is because gravity assists in moving secretions from the smaller airways into the larger airways, where they can be more easily coughed up.
Additional benefits of sitting up and ambulating: Improved circulation
Decreased risk of pneumonia Enhanced recovery from surgery Choice C rationale:
Using an incentive spirometer hourly helps to increase lung capacity and prevent atelectasis. The device encourages the patient to take slow, deep breaths, which helps to inflate the alveoli (air sacs) in the lungs.
Instructions for using an incentive spirometer:
Sit upright in a chair or bed.
Place the mouthpiece of the spirometer in your mouth and seal your lips around it.
Inhale slowly and deeply through the mouthpiece, aiming to raise the piston inside the device as high as possible. Hold your breath for 3-5 seconds.
Exhale slowly and completely through the mouthpiece.
Repeat the process 10-15 times per hour, or as instructed by your healthcare provider.
Correct Answer is A
Explanation
Choice A rationale:
Generic drugs are chemically identical to their brand-name counterparts, meaning they have the same active ingredients, dosage form, strength, route of administration, quality, performance characteristics, and intended use. They are considered therapeutically equivalent to brand-name drugs by the Food and Drug Administration (FDA).
Here are the key reasons why a patient would likely receive a generic version if the insurance company declines to cover the brand-name drug:
Cost: Generic drugs are significantly less expensive than brand-name drugs. This is because generic drug manufacturers do not have to repeat the extensive research and development costs associated with the original brand-name drug. They can enter the market after the brand-name drug's patent expires, leading to substantial cost savings.
Insurance Coverage: Insurance companies often have preferred drug lists (formularies) that prioritize generic drugs due to their cost-effectiveness. If a brand-name drug is not on the formulary or requires a high co-pay, the insurance company may encourage or even require the use of a generic alternative to manage costs.
Availability: Generic drugs are often widely available in pharmacies, making them readily accessible to patients. This availability further contributes to their cost-effectiveness and convenience.
I'm unable to provide lengthy rationales for the other choices as they are not relevant to the correct answer.
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