, antibiotic basics - combinations - answer additive: effect is
sum of the 2 antibiotics
potentiative: one potentiates effects of the other
antagonist: if one bactericidal & one bacteriostatic,
desired effect is diminished
antibiotic basics - narrow spectrum - answer primarily
effective against one type
ex: penicillin, erthrymycin
antibiotic basics - broad spectrum - answer effective
against gram + or gram -
ex: tetracyclines, cephalosporins
antibiotic basics - antibiotic resistance - answer
overprescribing, not taking full course
antibiotic resistance - natural or inherent resistance -
answer occurs without previous exposure to antibacterial
drug
antibiotic resistance - acquired resistance - answer caused
by prior exposure to antibacterial (ex: MRSA resistant to
all PCN & most cephalosporins)
antibiotic resistance - cross resistance - answer when
antibiotics have similar actions (PCN & cephalosporins)
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