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Small Animal Clinical Pharmacology - CYF MEDICAL DISTRIBUTION

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Table 8.2 Suggested antibacterial drug selection for canine and feline infections<br />

Diagnosis Common organisms (less common) Suggested drugs<br />

Pyoderma, pustular dermatitis<br />

Dogs Staphylococcus (secondary Escherichia, Proteus,<br />

Amoxicillin-clavulanate, cephalosporin, cloxacillin/flucloxacillin<br />

Pseudomonas)<br />

Cats Streptococcus, Pasteurella, Staphylococcus Amoxicillin-clavulanate, lincosamide, doxycycline, cephalosporin<br />

Bite wounds, traumatic and contaminated wounds<br />

Dogs Staphylococcus, Streptococcus, Pasteurella, anaerobes Amoxicillin-clavulanate, cephalosporin<br />

Cats Anaerobes, Pasteurella, Actinomyces Penicillin G, clindamycin, doxycycline, amoxicillin, cephalosporin<br />

Anal sac inflammation, abscessation<br />

Escherichia, Enterococcus, (Clostridium, Proteus)<br />

Otitis externa<br />

Staphylococcus, Malasezzia, Pseudomonas, Proteus<br />

Otitis media, otitis interna<br />

Staphylococcus, Pseudomonas, Proteus<br />

Amoxicillin-clavulanate, chloramphenicol,<br />

sulfonamide-trimethoprim<br />

Topical: aminoglycoside, polymyxin, fluoroquinolone,<br />

chloramphenicol, ticarcillin<br />

Amoxicillin-clavulanate, fluoroquinolone, chloramphenicol,<br />

ticarcillin<br />

Conjunctivitis<br />

Dog Staphylococcus, Streptococcus, Escherichia, Proteus Topical: neomycin-polymyxin-bacitracin, chloramphenicol,<br />

gentamicin<br />

Cats Viruses, Chlamydophila, Mycoplasma, 2° bacteria Tetracycline, chloramphenicol<br />

Infectious tracheobronchitis<br />

Dogs Bordetella, viruses, secondary bacteria (Mycoplasma?) Sulfonamide-trimethoprim, doxycycline, chloramphenicol<br />

Bacterial pneumonia*, pyothorax*<br />

Dogs Single or mixed Gram-negative aerobes and/or anaerobes Amoxicillin-clavulanate, fluoroquinolone + metronidazole<br />

Cats<br />

Various anaerobes, Pasteurella, other Gram-negative<br />

aerobes, Actinomyces<br />

Amoxicillin-clavulanate, fluoroquinolone + metronidazole<br />

Periodontitis, gingivitis, ulcerative stomatitis<br />

Anaerobes and mixed aerobes<br />

Penicillin G, amoxicillin, metronidazole ± spiramycin,<br />

doxycycline, clindamycin<br />

<strong>Small</strong> intestine bacterial overgrowth/antibiotic-responsive<br />

diarrhea<br />

Escherichia, Enterococcus, Staphylococcus, Clostridium Tetracycline, tylosin, metronidazole<br />

Cholecystitis, cholangitis<br />

Dogs Escherichia, Salmonella, anaerobes Amoxicillin-clavulanate, chloramphenicol, fluoroquinolone +<br />

metronidazole<br />

Cats Coliforms Amoxicillin-clavulanate, chloramphenicol, fluoroquinolone<br />

Lower urinary tract infection, pyelonephritis*<br />

Dogs Escherichia, Proteus, Staphylococcus, Streptococcus,<br />

Klebsiella, Pseudomonas, Enterobacter<br />

Prostatitis<br />

Dogs<br />

Escherichia, Proteus, Staphylococcus, Streptococcus,<br />

Klebsiella, Pseudomonas, Enterobacter<br />

Mastitis*<br />

Escherichia, Staphylococcus, Streptococcus<br />

Osteomyelitis*<br />

Staphylococcus (possibly with Streptococcus, Escherichia,<br />

Proteus, Pseudomonas, anaerobes)<br />

Discospondylitis<br />

Staphylococcus (Streptococcus, Aspergillus)<br />

Amoxicillin-clavulanate, sulfonamide-trimethoprim,<br />

cephalosporin, fluoroquinolone<br />

Sulfonamide-trimethoprim, fluoroquinolone<br />

Chloramphenicol, amoxicillin-clavulanate, fluoroquinolone<br />

Amoxicillin-clavulanate, lincosamide, cloxacillin/ flucloxacillin,<br />

fluoroquinolone, cephalosporin<br />

Cloxacillin/flucloxacillin, lincosamide, cephalosporin,<br />

amoxicillin-clavulanate<br />

Septic arthritis*<br />

Staphylococcus, Streptococcus (anaerobes, coliforms)<br />

Cloxacillin/flucloxacillin, amoxicillin-clavulanate<br />

Septicemia*, bacterial endocarditis*<br />

Various aerobes or anaerobes Fluoroquinolone + penicillin G or metronidazole, gentamicin +<br />

cephalosporin or cloxacillin/flucloxacillin<br />

Toxoplasmosis<br />

Toxoplasma gondii<br />

Clindamycin, sulfonamide + pyrimethamine<br />

Feline infectious anemia<br />

Mycoplasma haemofelis (formerly Haemobartonella felis) Doxycycline, enrofloxacin<br />

‘Anaerobes’ here signifies bacterial species that are obligate anaerobes, while ‘aerobes’ denotes aerobic and facultatively anaerobic bacteria.<br />

Culture and susceptibility testing should be performed, if possible, prior to initiating therapy for those conditions marked by * and in all other<br />

conditions if initial empirical antimicrobial therapy is unsuccessful.

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