Range of Activity - cephalosporins, etc.) belong in a third...

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Range of Activity Antimicrobials can also be classified by their range of activity. In general, five classifications can be described. The first of these is termed narrow spectrum . Narrow spectrum drugs, as the name implies, are only active against a relatively small number of organisms. In general, narrow spectrum antibiotics are effective against Gram-positive organisms. The second classification is termed moderate spectrum . These drugs are generally effective against the Gram-positives and most systemic, enteric and urinary tract Gram-negative pathogens. The beta-lactam antibiotics (penicillin, ampicillin,
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Unformatted text preview: cephalosporins, etc.) belong in a third classification, narrow and moderate spectrum because some members are only effective against Gram-positive organisms while other members can also kill certain Gram-negative bacteria. A fourth classification is termed broad spectrum . These drugs are effective against all prokaryotes with two exceptions: Mycobacteria (see below) and Pseudomonas . The fifth group includes those drugs that are effective against Mycobacteria . The following table details some examples of these antimicrobials....
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