Drug Of Choice- Micro Flashcards
MRSA
Vancomycin
Methicillin sensitive SA
Penicillinase resistant penicillins (nafcillin, oxacillin, and dicloxacillin)
VRSA
Linezolid
Staph epidermidis
Vancomycin
Staph saprophyticus
TMP SMX, quinolonesw
Strep pyogenes
Pen G
Strep agalactiae
Pen ag
Group D Strep (Enterococcus Faecalis)
Penicillin + gentamicin; vancomycin; linozolid
Strep Pneumoniae
Pen G; Levofloxacin/ vancomycin combined with ceftriaxone for penicillin resistance
Viridians streptococci(streptococcus mutans, S. sanguis)
Pen G with or without an aminoglycoside; vancomycin; linezolid
Bacillus anthracis
Ciprofloxacin
Bacillus cereus
Symptomatic for food poisoning; vancomycin, clindamycin, ciprofloxacin, gentamicin for ophthalmitis
Clostridium tetani
Penicillin; metronidazole
Clostridium botolinum
Adeq ventilatory support; elimination of organism from GIT, trivalent botolinum toxin (A,B,E)
Clostridium perfringens
Wound debridement and penicillin for gas gangrene; supportive management for food poisoning
Clostridium difficile
Withdrawal of antibiotic, metronidazole
Corynebacterium diphtheriae
Antitoxin and Pen G
Listeria monocytogenes
Ampicillin with or without gentamycin
Neisseria meningitidis
Pen G
Neisseria gonorrhea
Ceftriaxone+ gentamycin
Haemophilus influenzae
Ceftriaxone
Bordettela pertussis
Erythromycin
Legionella pneumophilia
Azithromycin or erythromycin
E.coli
Ampicillin or sulfonamides for UTI; 3rd gen cephalosporin for meningitis and sepsis; rehydration for traveler’s diarrhea
Salmonella spo
Ceftriaxone, ciprofloxacin; PH: amoxicillin, chloramphenicol, cotrimoxazole
Shigella spp
Ciprofloxacin in severe cases
Vibrio cholera
Tetracycline; azithromycin shortens duration
Vibrio parahaemolyticus, V. Vulnificus
Minocycline plus fluoroquinolone of cefotaxie
Campylobacter jejuni
Erythromycin for severe disease
Klebsiella pneumoniae
Culture guided treatment (cephalosporins alone or with aminoglycosides)
Proteus mirabilis
TMP SMX or ampicillin
Pseudomonas aeruginosa
Combination of active antibiotics*
Bacteroides fragilis
Metronidazole, clindamycin or cefoxitin
Brucekla abortus
Doxycycline plus rifampin
Francisella tularensis
Streptomycin or gentamycin
Yersinia pestis
Streptomycin and tetracycline
Pasturella multicoda
Pen G
Mycobacterium avium intrwcellulare complex
Azithromycin
Mycobacterium leprae
Tuberculoid leprosy- dapsone and rifampin; lepromatous leprosy- dapsone, rifampin, clofazimine; erythema nodosum leprosum- thalidomide
Actinomycosis
Pen G+ drainage
Nocardia asteroides
TMP SMX + drainage
Mycoplasma pneumonia
Erythromcyin or azithromycin
Treponema pallidum
Benzathine penicillin
Borrelia burgdorferi
Doxycycline
Borrelia recurrentis
Tetracycline, erythromycin
Leptospira interogans
Pen G
Chlamydia spp
STD- azithromycin; conjunctivitis- erthromycin; LGV- doxycycline; psittacosis- azithromycin
Rickettsia
Doxycycline
Klebsiella granulomatis
Azithromycin