Which of the following differentiates a bacteriostatic drug from a bactericidal drug?
Bacteriostatics are narrow spectrum drugs and bactericidal drugs are broad spectrum
Bacteriostatic drugs inhibit bacterial growth, and bactericidal drugs actually kill bacteria
Bacteriostatics work by inhibiting protein synthesis and bactericidal drugs work by inhibiting nucleic acid synthesis
Bacteriostatic drugs actually kill bacteria and bactericidal drugs inhibit bacterial growth
The Correct Answer is B
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Refers to an infection that is resistant to conventional antibiotics:
This statement is partially correct. Acquired resistance does indeed refer to bacteria becoming resistant to antibiotics, but it is not specific to conventional antibiotics. Bacteria can develop resistance to various types of antibiotics, including conventional antibiotics and newer antimicrobial agents.
B. Superinfection that has significant antifungal resistance:
This statement is incorrect. Acquired resistance specifically pertains to bacteria and their ability to resist antibiotics. It does not involve antifungal resistance or superinfections.
C. Refers to a term used for antibiotic coverage:
This statement is incorrect. Acquired resistance is not a term used to describe antibiotic coverage. It describes the phenomenon of bacteria becoming resistant to antibiotics.
D. There is no such phenomenon of acquired resistance:
This statement is incorrect. Acquired resistance is a well-documented phenomenon in microbiology and is a significant challenge in the treatment of bacterial infections. Ignoring or denying the existence of acquired resistance would overlook a critical aspect of antibiotic stewardship and management of bacterial infections.
Correct Answer is C
Explanation
A. Ibuprofen:
Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID) commonly used to relieve pain and reduce inflammation. There are no significant interactions reported between erythromycin and ibuprofen.
B. Lasix (Furosemide):
Lasix is a diuretic medication used to treat fluid retention (edema) and high blood pressure. There are no significant interactions reported between erythromycin and furosemide.
C. Lovastatin:
Lovastatin is a statin medication used to lower cholesterol levels. Erythromycin can increase the levels of lovastatin in the blood by inhibiting its metabolism through the CYP3A4 enzyme. This can lead to an increased risk of statin-related side effects, including muscle pain and weakness, and in rare cases, rhabdomyolysis.
D. Lisinopril:
Lisinopril is an angiotensin-converting enzyme (ACE) inhibitor used to treat high blood pressure and heart failure. There are no significant interactions reported between erythromycin and lisinopril.
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