A patient asks the nurse to define hypersensitivity reaction. The nurse begins by telling the patient that a hypersensitivity reaction is also called:
antagonistic reaction
drug idiosyncracy
synergistic reaction
allergic reaction
The Correct Answer is D
A. Antagonistic reaction:
An antagonistic reaction refers to a response where one substance opposes the action of another substance. In the context of hypersensitivity reactions, this term does not accurately describe the immune system's response to an allergen. Hypersensitivity reactions involve an overreaction of the immune system to a harmless substance, rather than opposing actions between substances. Therefore, choice A is not the correct term to describe hypersensitivity reactions.
B. Drug idiosyncrasy:
Drug idiosyncrasy refers to an unusual or unexpected response to a medication that is not related to the known pharmacological properties of the drug or the patient's characteristics. While idiosyncratic drug reactions can sometimes involve immune-mediated mechanisms, they are not synonymous with hypersensitivity reactions. Hypersensitivity reactions specifically involve the immune system's exaggerated response to an allergen, which may or may not be a medication. Therefore, while drug idiosyncrasy may involve unpredictable reactions, it does not specifically address the immune-mediated nature of hypersensitivity reactions.
C. Synergistic reaction:
A synergistic reaction occurs when the combined effect of two substances is greater than the sum of their individual effects. In the context of hypersensitivity reactions, this term does not accurately describe the immune system's response to an allergen. Hypersensitivity reactions involve an exaggerated response of the immune system to an allergen, rather than a synergistic interaction between substances. Therefore, choice C is not the correct term to describe hypersensitivity reactions.
D. Allergic reaction:
An allergic reaction is the correct term to describe hypersensitivity reactions. Hypersensitivity reactions involve the immune system's exaggerated response to a harmless substance, known as an allergen. This response can manifest in various symptoms, ranging from mild to severe, depending on the individual's sensitivity and the nature of the allergen. Allergic reactions can affect different organ systems and can be triggered by a wide range of substances, including foods, medications, environmental allergens, and insect venom. Therefore, choice D accurately describes hypersensitivity reactions.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Bacteriostatics are narrow spectrum drugs, and bactericidal drugs are broad spectrum:
This statement is incorrect. The spectrum of activity (narrow vs. broad) of an antibiotic refers to the range of bacterial species that it can target, not whether it is bacteriostatic or bactericidal.
B. Bacteriostatic drugs inhibit bacterial growth, and bactericidal drugs actually kill bacteria:
This statement is correct. Bacteriostatic drugs work by inhibiting the growth and reproduction of bacteria without directly killing them, whereas bactericidal drugs directly kill bacteria.
C. Bacteriostatics work by inhibiting protein synthesis, and bactericidal drugs work by inhibiting nucleic acid synthesis:
This statement is incorrect. Both bacteriostatic and bactericidal drugs can target various bacterial cellular processes, including protein synthesis, nucleic acid synthesis, cell wall synthesis, and others. The mechanism of action is not a definitive factor in distinguishing between bacteriostatic and bactericidal drugs.
D. Bacteriostatic drugs actually kill bacteria, and bactericidal drugs inhibit bacterial growth:
This statement is incorrect. It contradicts the established definitions of bacteriostatic and bactericidal drugs. Bacteriostatic drugs inhibit bacterial growth without killing the bacteria, while bactericidal drugs directly kill bacteria.
Correct Answer is B
Explanation
A.Green leafy vegetables:
There is no specific recommendation to avoid green leafy vegetables while taking tetracycline. However, it’s generally advisable to take tetracycline on an empty stomach, as certain foods and supplements containing calcium, magnesium, aluminum, iron, or zinc can interfere with the absorption of tetracycline if consumed concurrently. Green leafy vegetables are not typically high in these minerals, so there is no need to avoid them specifically.
B. Sunlight:
Tetracycline antibiotics, including Sumycin, can increase the skin’s sensitivity to sunlight and UV radiation, leading to an increased risk of sunburn and photosensitivity reactions. Therefore, clients taking tetracycline should be advised to minimize sun exposure, wear protective clothing, and use sunscreen with a high sun protection factor (SPF) to reduce the risk of sunburn and skin damage.
C. Exercise:
There is no specific contraindication to exercise while taking tetracycline. In fact, regular exercise can promote overall health and well-being. However, it’s essential for clients to listen to their bodies and avoid strenuous exercise if they experience any adverse effects or symptoms while taking tetracycline or any other medication.
D. Foods high in tyramine:
Tetracycline antibiotics do not interact with tyramine-containing foods in the same way as certain other classes of antibiotics, such as monoamine oxidase inhibitors (MAOIs). Therefore, there is no specific need to avoid foods high in tyramine while taking tetracycline, as tyramine-related interactions are not typically associated with tetracycline use.
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