Chapter 08 - Antiinfective Agents |Test Bank - Focus on Nursing Pharmacology (8th Edition by Karch)
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Focus on Nursing Pharmacology
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Focus On Nursing Pharmacology
1. A patient asks the nurse how an anti-infective produces a therapeutic effect. What key point will the nurse explain to this patient?
a. Drugs used to treat infections date back to the 17th century.
b. All anti-infectives work in the same way to destroy organisms.
c. Selective toxicity determi...
Test Bank - Focus on Nursing Pharmacology (8th Edition by Karch)
1. A patient asks the nurse how an anti-infective produces a therapeutic effect. What
key point will the nurse explain to this patient?
a. Drugs used to treat infections date back to the 17th century.
b. All anti-infectives work in the same way to destroy organisms.
c. Selective toxicity determines the appropriate drug dosage needed.
d. The goal of anti-infectives is to interfere with normal functioning of the
organism.
Ans: D
Feedback:
The goal of anti-infectives is to interfere with the normal function of the invading
organism to prevent it from reproducing and to cause cell death without affecting host
cells. Each class of anti-infectives works in a different way, but all have the same
goal. Because bacteria cells have a slightly different composition than human cells,
the bacteria are destroyed without interfering with the host. The first drugs used to
treat systemic infections were developed in the early 20th century. The term selective
toxicity refers to the ability to affect certain proteins or enzyme systems that are used
by infecting organisms, but not by human cells.
2. The nursing student learns about anti-infectives in class and demonstrates the need
to study more when making what statement about how anti-infectives work?
a. Some anti-infectives interfere with biosynthesis of the pathogen’s cell wall.
b. Some anti-infectives prevent the cells of the organism from using essential
substances.
c. Many anti-infectives interfere with the steps involved in protein synthesis.
d. Some anti-infectives interfere with ribonucleic acid (RNA) synthesis in the
cell leading to cell death.
Ans: D
Feedback:
Some anti-infectives interfere with deoxyribonucleic acid (DNA) synthesis, not RNA
synthesis, in the cell, leading to inability to divide and causing cell death. The
fluoroquinolones work in this way. The other three options are correct and would not
indicate the need for further study time. Penicillins interfere with biosynthesis of the
cell wall, sulfonamides prevent organisms from using substances essential to their
growth and development, whereas aminoglycosides, macrolides, and chloramphenicol
interfere with protein synthesis.
, 3. The nurse administers a drug to treat Neisseria gonorrhoeae that works on no other
bacteria. How would the nurse describe this drug?
a. Broad spectrum
b. Narrow spectrum
c. Bactericidal
d. Bacteriostatic
Ans: B
Feedback:
Without knowing the name of the antibiotic and how it works to treat N. gonorrhoeae,
the only thing that can be said is that it is a narrow-spectrum anti-infective because it
only treats one specific organism. Broad-spectrum anti-infectives treat multiple
organisms. The name of the drug and how it works would need to be known to
determine whether it is bacteriocidal or bacteriostatic.
4. The nurse has provided patient teaching for a patient who will be discharged to
home on an anti- infective. What statement made by the patient indicates the nurse
needs to provide additional teaching concerning the use of anti-infectives?
a. Antibiotics will not help me when I have a viral infection.
b. A bacterial culture will be done before antibiotics are prescribed for me.
c. I could develop diarrhea as a result of taking an antibiotic.
d. I will stop taking the antibiotic as soon as I feel better.
Ans: D
Feedback:
Compliance with anti-infective therapy is a concern. Patients tend to stop taking the
drugs when they begin to feel better. A nurse should instruct the patient to take the
entire course of prescribed drug to ensure a sufficient period to rid the body of
pathogens and to help prevent the development of resistance. Antibiotics are not
prescribed for viral infections. It is important that cultures be performed before
antibiotics are prescribed to determine what organism is causing the infection so that
the correct drug is prescribed. Diarrhea is the most common adverse effect from anti-
infectives.
5. The nurse attends a class on preventing resistance to anti-infectives and learns that
the critical concept in preventing the development of resistant strains of microbes
is what?
a. Exposure of pathogens to an antimicrobial agent without cellular death
b. Drug dosages that are below a therapeutic level
c. The duration of drug use
d. Frequency of drug ingestion
Ans: C
Feedback:
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