Which adverse effect unique to vancomycin is caused by histamine release?

Discoloration of body fluids

Ototoxicity

Red-man syndrome

Nephrotoxicity

Answer and Explanation

The Correct Answer is C

A. Discoloration of body fluids:

Vancomycin can cause discoloration of body fluids, particularly urine, resulting in a brownish discoloration. However, this is not caused by histamine release.

B. Ototoxicity:

Ototoxicity refers to damage to the inner ear structures leading to hearing loss or balance problems. While vancomycin can cause ototoxicity, it is not specifically associated with histamine release.

C. Red-man syndrome

Red-man syndrome, also known as red-neck syndrome or red-person syndrome, is a hypersensitivity reaction characterized by flushing of the skin, particularly the upper body and face, resembling a "red man." This reaction is typically associated with the rapid infusion of vancomycin and is caused by the release of histamine from mast cells and basophils. It is not an allergic reaction but rather a non-immunologic response to vancomycin.

D. Nephrotoxicity:

Nephrotoxicity refers to kidney damage caused by certain medications or toxins. While vancomycin can cause nephrotoxicity, it is not specifically associated with histamine release.

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Correct Answer is A

Explanation

A. Ototoxicity:

Ototoxicity refers to damage to the auditory and vestibular nerves, leading to hearing loss and balance disturbances. Gentamicin, being an aminoglycoside antibiotic, is known for its potential to cause ototoxicity. Signs and symptoms of ototoxicity include changes in hearing, ringing in the ears (tinnitus), and imbalance. Ototoxicity is irreversible and can occur suddenly or gradually during gentamicin therapy. Therefore, any signs or symptoms of ototoxicity should be reported immediately to the physician for further evaluation and management.

B. Nausea:

Nausea is a common gastrointestinal side effect associated with gentamicin therapy. While it can be bothersome to the patient, nausea alone is not typically considered a severe adverse effect that requires immediate reporting to the physician. However, if nausea is severe or persistent and leads to dehydration or electrolyte imbalances, it should be addressed promptly.

C. Constipation:

Constipation is another potential gastrointestinal side effect of gentamicin therapy. Like nausea, constipation alone is not typically considered a severe adverse effect that requires immediate reporting to the physician. However, if constipation is severe or persistent and leads to discomfort or bowel obstruction, it should be addressed promptly.

D. Increased urinary output:

Increased urinary output may indicate improved renal function, which can be a desired effect during gentamicin therapy. Gentamicin is primarily excreted by the kidneys, and increased urinary output may help in the elimination of the drug from the body. Therefore, increased urinary output alone is not typically considered an adverse effect that requires immediate reporting to the physician. However, if there are signs of dehydration or electrolyte imbalances associated with increased urinary output, they should be addressed promptly.

A. antagonistic reaction B. drug idiosyncracy C. synergistic reaction D. allergic reaction

Correct Answer is D

Explanation

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.

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Which adverse effect unique to vancomycin is caused by histamine release?

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Naxlex Comprehensive Predictor Exams

The nurse is caring for a client receiving gentamycin IV. Which of the following adverse effects would the nurse report to the physician immediately?

Correct Answer is A

Explanation

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Correct Answer is D

Explanation

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