Pharmacology1 Flashcards
Penicillins
- Mechanism of Actions ?
c.w. synthesis inhibition
(stage 3) bactericidal
Prototype
- drugs ?
Penicillin G
Penicillin V [103]
Pharmacokinetics ?
- Penicillin G
- Penicillin V [103]
G: IM/IV (poor oral), renal excretion (almost all)
V: good oral, acid stable, renal excretion (almost all)
Penicillins
- Pharmacokinetics ?
renal excretion (almost all)
Penicillins
- Adverse Reactions?
anaphylaxis (Type I, rare) Prototype convulsions (very high doses)
Penicillinase-resistant
-drug?
Dicloxacillin,
Dicloxacillin
- Pharmacokinetics ?
good oral (not methicillin or nafcillin) NOTE: All other PCN classes are penicillinase (β-lactamase) susceptible; unless combined w/β-lactamase inhibitor (amoxicillin-clavulanate [34] or piperacillin/tazobactam)
Extended Spectrum
- drugs ?
(Amoxicillin [4], Ampicillin)
(Amoxicillin [4], Ampicillin)
- Pharmacokinetics ?
good oral
(Amoxicillin [4], Ampicillin)
- Adverse Reactions?
diarrhea (less with amoxicillin)
superinfection (CDAD) possible
Antipseudomonal
- drugs?
Piperacillin
Piperacillin
- Pharmacokinetics ?
IV only
Cephalosporins
- Mechanism of Actions ?
c.w. synthesis inhibition
(stage 3) bactericidal
Cephalosporins
- - Pharmacokinetics ?
renal excretion (almost all)
Cephalosporins
- Adverse Reactions?
allergy, less severe than penicillins
(some cross sensitivity - ∼ 1-5%)
Cephalosporins - 1st Generation
- drug?
Cephalexin [23]
(Cefazolin)
Cephalosporins - 2nd Generation
- drug?
Cefaclor,
Cephalosporins - 3rd Generation
- drug?
Ceftriaxone, Ceftazidine
Cephalexin
- Pharmacokinetics ?
good oral
(Cefazolin)
- Pharmacokinetics ?
IV/IM only
Cephalexin, Cefazolin
- Adverse Reactions?
diarrhea
Cefuroxime
- Pharmacokinetics ?
good oral
Cefuroxime
- Adverse Reactions?
DDI: enhancement of warfarin
anticoagulant activity possible
superinfection (CDAD) possible
Ceftriaxone [IV, IM]) Ceftazidine
- - Pharmacokinetics ?
good CNS penetration
Ceftriaxone [IV, IM]) Ceftazidine
- Adverse Reactions
superinfection (CDAD) possible
Cephalosporins - 4th generation
- drug?
Cefepime
Cefepime
- Adverse Reaction?
superinfection (CDAD) possible
Vancomycin
- Mechanism of Actions ?
c.w. synthesis inhibition
(stage 2) bactericidal