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Spectrum of activity
Spectrum of activity ( 5 Questions)
A nurse is reviewing the medication history of a client who has a urinary tract infection caused by Escherichia coli.
Which of the following antimicrobial agents should the nurse expect the provider to prescribe for this client?
Amoxicillin-clavulanate is an antibiotic that belongs to the penicillin group and is effective against Escherichia coli, the most common cause of urinary tract infections (UTIs) . It works by inhibiting the bacterial cell wall synthesis and preventing the bacteria from producing an enzyme that makes them resistant to penicillin .
Choice B is wrong because Vancomycin is wrong because it is an antibiotic that is used to treat serious infections caused by gram-positive bacteria, such as methicillin-resistant Staphylococcus aureus (MRSA) . It is not effective against gram-negative bacteria, such as Escherichia coli .
Choice C is wrong because Penicillin G is wrong because it is an antibiotic that is effective against some gram-positive bacteria, such as Streptococcus and Neisseria . However, many strains of Escherichia coli are resistant to penicillin G and can produce an enzyme called beta-lactamase that breaks down the antibiotic .
Choice D is wrong because Acyclovir is wrong because it is an antiviral drug that is used to treat infections caused by herpes simplex virus (HSV) and varicella-zoster virus (VZV) . It has no activity against bacteria, such as Escherichia coli .
Amoxicillin-clavulanate is an antibiotic that belongs to the penicillin group and is effective against Escherichia coli, the most common cause of urinary tract infections (UTIs) . It works by inhibiting the bacterial cell wall synthesis and preventing the bacteria from producing an enzyme that makes them resistant to penicillin .
Choice B is wrong because Vancomycin is wrong because it is an antibiotic that is used to treat serious infections caused by gram-positive bacteria, such as methicillin-resistant Staphylococcus aureus (MRSA) . It is not effective against gram-negative bacteria, such as Escherichia coli .
Choice C is wrong because Penicillin G is wrong because it is an antibiotic that is effective against some gram-positive bacteria, such as Streptococcus and Neisseria . However, many strains of Escherichia coli are resistant to penicillin G and can produce an enzyme called beta-lactamase that breaks down the antibiotic .
Choice D is wrong because Acyclovir is wrong because it is an antiviral drug that is used to treat infections caused by herpes simplex virus (HSV) and varicella-zoster virus (VZV) . It has no activity against bacteria, such as Escherichia coli .