Bacterial ADRs Flashcards
Penicillins ADRs
-hypersensitivity
-contact dermatitis risk > not used topically
-potentially fatal colitis in hindgut fermenters (if given orally)
-reduction of seizure threshold
Penicillin PK features
-excreted intact in urine
-Penicillin G not acid stable
-oral availability of amoxicillin is ~90%
Penicillins Health canada stats
1st line: pen G, amox
2nd line: potentiated
cephalosporin ADR
-potentially fatal colitis in hindgut fermenters (oral)
-hypersensitivity
-reduction of seizure threshold
Cephalosporin health canada stats
1st line: 1st gen
2nd line: 3rd gen
cephalosporin PK
-only a few are acid stable (cephalexin)
-not destroyed by penicillinases, but may be inactivated by beta lactamases
-some 3rd gens enter CNS readily
Aminoglycosides ADRs
-ototoxic
-nephrotoxic
aminoglycosides health canada stats
1st line: topical admin
2nd line: systemic
aminoglycosides PK
-highly ionized > negligible oral or topical absorption
-food residues >1yr with parenteral admin
tetracyclines ADRs
-incorporation into growing teeth and long bones
-nephrotoxic in dehydrated patients
-tissue irritation (pain on injection, vomiting oral dose)
-risk of esophogeal damage in cats
tetracyclines health canada stats
1st line
tetracyclines PK
-lipid soluble tetracyclines (eg. doxycycline) are useful against intracullular pathogens
TMS ADRs
-lacrimotoxocity in dogs (KCS)
-nephrotoxicity in dehydrated patients
-hypersensitivity (including contact dermatitis)
TMS health canada stats
1st line
TMS PK
-ineffective in presence of puss
-distributes to all tissues