Acquired resistance is:

substance that can inhibit the growth of bacteria

ability of an organism to cause disease in humans

the severity of a disease that an organism is able to cause

when a microbe is no longer affected by a drug following treatment with an anti-infective

Answer and Explanation

The Correct Answer is D

A. Substance that can inhibit the growth of bacteria: This describes an antibiotic, not acquired resistance.
B. Ability of an organism to cause disease in humans: This describes pathogenicity, not acquired resistance.
C. The severity of a disease that an organism is able to cause: This describes virulence, not acquired resistance.
D. When a microbe is no longer affected by a drug following treatment with an anti-infective: This is the correct definition of acquired resistance. Over time, microbes can develop mechanisms to evade the effects of antibiotics, rendering them ineffective.

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Free Nursing Study Resources

Correct Answer is A

Explanation

A. Complaints that he is unable to hear the television: Correct. Gentamycin is an aminoglycoside antibiotic that can cause ototoxicity, leading to hearing loss or tinnitus.
B. Tingling of the extremities: This may indicate neuropathy but is not specific to ototoxicity.
C. an increase in the BUN and creatinine: This indicates nephrotoxicity, not ototoxicity.
D. changes in mental status: This could indicate various conditions, including neurotoxicity or other systemic effects, but not specifically ototoxicity.

A. The patient uses OTC drugs prophylactically B. The patient stops taking the drug when he or she begins to feel better C. The patient switches to multiple drug therapy from single drug therapy D. The patient increases the drug dosage when he or she perceives that the therapeutic effect of the drug is slowing down.

Correct Answer is B

Explanation

A. The patient uses OTC drugs prophylactically: OTC (over-the-counter) medications used appropriately shouldn't directly cause microbial repopulation.
B. The patient stops taking the drug when he or she begins to feel better: This is the most concerning habit. Stopping antibiotics early allows susceptible microbes to survive and multiply, potentially leading to a recurrent infection.
C. The patient switches to multiple drug therapy from single drug therapy: This might be done under a doctor's supervision for complex infections, and wouldn't necessarily promote repopulation.
D. The patient increases the drug dosage when he or she perceives that the therapeutic effect is slowing down: Increasing the dosage without consulting a doctor is not recommended, but it wouldn't necessarily cause repopulation if the original dose was effective.

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Acquired resistance is:

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Which of the following complaints by a man taking gentamycin would be most indicative that he is experiencing ototoxicity?

Correct Answer is A

Explanation

Which of the following common habit of patients may cause microbes to re-populate and re-establish an infection?

Correct Answer is B

Explanation

Before starting antimicrobial therapy, the nurse assesses a patient for possible drug allergy. Which of the following complaints should alert the nurse to a drug allergy?

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