Deck 5 - Antibiotic Drugs Flashcards
Equal to the sum of the effects of 2 antibiotics
additive effect
occurs when one antibiotic increases the effectiveness of the 2nd drug
potentiative effect
when 2 drugs are used together, the desired effect may be greatly reduced
Antagonistic effect
primarily effective against one type off organism (selective)
Narrow spectrum
Effective against gram-positive and gram-negative organisms
Broad spectrum
when a drug selected in known to be the best drug that can kill the microorganism
Empiric therapy
Once the MO is identified in the lab, the antibiotic therapy is tailored by using the most narrow-spectrum, least toxic drug based on C&S results
Definitive therapy
when signs and symptoms do not improve
Subtherapeutic
Occurs when the antibiotics reduce or completely eliminate the normal bacterial flora
superinfection
Aspirate of the body fluid is examined under the microscope
Gram stain
Aspirated is applied to a medium where they are grown for several days.
Culture
used for organisms where resistance is common, to test for sensitivity of the organisms to various antimicrobial
Sensitivity