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However, it is not regarded as the first-line treatment for uncomplicated cystitis because of the high prevalence of penicillin-resistant E. coli strains. [12] Within the penicillin class, pivmecillinam is considered the first-line empiric treatment for acute cystitis due to its wide spectrum of activity against gram-negative bacteria and its ...
Cefalexin is not effective against infections caused by methicillin-resistant Staphylococcus aureus (MRSA), most Enterococcus, or Pseudomonas. [4] Like other antibiotics, cefalexin cannot treat viral infections, such as the flu, common cold or acute bronchitis. [4] Cefalexin can be used in those who have mild or moderate allergies to penicillin ...
As gram-negative organisms, E. coli are resistant to many antibiotics that are effective against gram-positive organisms. Antibiotics which may be used to treat E. coli infection include amoxicillin , as well as other semisynthetic penicillins, many cephalosporins , carbapenems , aztreonam , trimethoprim-sulfamethoxazole , ciprofloxacin ...
This group of antibiotics is called "broad-spectrum" because they are active against a wide range of Gram-negative bacteria such as Escherichia coli and Salmonella typhi, for which penicillin is not suitable. However, resistance in these organisms is now common.
Carbenicillin has been shown to be effective against bacteria responsible for causing urinary tract infections including Pseudomonas aeruginosa, Escherichia coli, and some Proteus species. The following represents carbenicillin susceptibility data for a few medically significant organisms. [3]
No activity against methicillin-resistant staphylococci or enterococci. [citation needed] Gram-negative: Activity against Proteus mirabilis, some Escherichia coli, and Klebsiella pneumoniae ("PEcK"), but have no activity against Bacteroides fragilis, Pseudomonas, Acinetobacter, Enterobacter, indole-positive Proteus, or Serratia. [citation needed]
It is known to be effective against a wide range of bacteria including Citrobacter, Enterobacter, E. coli, Haemophilus, Klebsiella, Proteus, and Serratia species. [8] The following represents minimum inhibitory concentration (MIC) susceptibility data for a few medically significant microorganisms.
The extended-spectrum penicillins are a group of antibiotics that have the widest antibacterial spectrum of all penicillins. [1] Some sources identify them with antipseudomonal penicillins, [2] others consider these types to be distinct. [3] This group includes the carboxypenicillins and the ureidopenicillins.
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