Management of Lacerations from Animal-Related Wounds

Antibiotic Selection

• The American College of Physicians recommends amoxicillin-clavulanate as the first-line treatment for animal-related wounds due to its broad coverage of both aerobic and anaerobic bacteria commonly found in these wounds 1, 3
• Amoxicillin-clavulanate provides coverage against Pasteurella multocida and other gram-negative organisms, as well as streptococci, staphylococci, and anaerobes that may be present in animal-related wounds 1, 4

Alternative Antibiotic Options

• For patients with mild penicillin allergy, cefuroxime is an alternative option, providing good coverage against P. multocida but missing some anaerobes 1, 4
• For patients with severe penicillin allergy, doxycycline is an alternative option, with excellent activity against P. multocida and good coverage of many other potential pathogens 1, 5

Duration of Treatment

• The Infectious Diseases Society of America recommends a 5-7 day course of antibiotics for uncomplicated wounds with proper cleaning and debridement 1, 2
• More severe or contaminated wounds may require longer treatment (7-10 days) 7, 8

Additional Management Considerations

• The American Academy of Orthopaedic Surgeons recommends thorough wound irrigation and debridement prior to antibiotic administration 7, 8
• Tetanus prophylaxis should be administered if the patient has not received a tetanus toxoid vaccination within the past 10 years, with Tdap preferred over Td if the former has not been previously given 1

Special Considerations

• For wounds with significant soil contamination or tissue damage, consider adding coverage against anaerobes, particularly Clostridium species 7, 8
• In cases of high contamination or deep penetrating wounds, intravenous antibiotics may be preferred initially, such as ampicillin-sulbactam 1, 4