Microbe-Antimicrobial Flashcards
Staphylococcus aureus toxin-mediated
Remove foreign bodies
Drainage of purulent collections
Fluid replacement
Penicillinase-resistant penicillins
Staphylococcus aureus infections
MSSA: penicillinase-resistant penicillins
MRSA: Vancomycin
Staphylococcus epidermidis
Vancomycin (most strains resistant to penicillins and cephalosporins)
Staphylococcus saprophyticus
TMP-SMX
Streptococcus pyogenes infections
Penicillin G
Streptococcus pyogenes toxin-mediated
Penicillin G
Clindamycin added in TSS to prevent Scarlet fever
Surgery/debridement for necrotizing fasciitis
Streptococcus pyogenes immune mediated
Prophylaxis: penicillin for patients h/o Rheumatic fever
Streptococcus agalactiae
Penicillin G
Prophylaxis: Ampicillin to pregnant women
Enterococcus faecalis
Ampicillin or vancomycin + aminoglycosides
VRE: linezolid, daptomycin
Streptococcus bovis
Penicillin
Streptococcus pneumoniae
Penicillin or cephalosporins
Vancomycin for meningitis
Pneumovax
Streptococcus mutans, Streptococcus intermedius
Penicillin G
Bacillus cereus
Rehydration, good food handling and storage (no reheating fried rice)
Bacillus anthracis
Parenteral penicillin G
Anti-PA vaccine
Clostridium tetani
Prophylaxis: DTaP
Treatment: clean wound, antitoxin (Ig), DTaP booster, penicillin/metronidazole, diazepam
Clostridium botulinum
Antitoxin, respiratory support
Clostridium difficile
Oral metronidazole
Oral vancomycin
Withdraw causative abx (usually clindamycin)
Clostridium perfringens
Surgical removal of infected area
Hyperbaric oxygen => kill anaerobic organism
Penicillin, clindamycin (only local, weak infections)
Listeria monocytogenes
Ampicillin +/- gentamycin
TMP-SMX
Corynebacterium diphtheriae
Prophylaxis: DTaP
Treatment: antitoxin, penicillin or erythromycin for local colonization, DTaP booster
Actinomyces israelii
Penicillin G
Surgical drainage of abscess
Nocardia asteroides, Nocardia brasiliensis
TMP-SMX
Surgical drainage of abscess
Neisseria meningitidis
Penicillin G, ceftriaxone
Rifampin for close contacts as prophylaxis