Cat Bite Management Guidelines

Immediate Wound Care

The American College of Emergency Physicians recommends immediate and thorough irrigation with sterile normal saline or water to reduce bacterial load and prevent infection in cat bite wounds 1
Effective wound cleansing can be achieved using a 20-mL or larger syringe to generate adequate pressure 2
Only superficial debris should be removed, avoiding aggressive debridement that could enlarge the wound unnecessarily 1
Iodine- or antibiotic-containing solutions should not be used for routine cleansing of cat bite wounds 1

The Infectious Diseases Society of America recommends amoxicillin-clavulanate (875/125 mg twice daily) as the first-line antibiotic for cat bites, providing essential coverage against Pasteurella multocida 2
Hand wounds and wounds near joints or bones require prophylactic antibiotics due to high infection risk 1
Treatment duration for cat bite wounds is 3-5 days for prophylaxis and 7-10 days for established infection 1
For penicillin-allergic patients, doxycycline 100 mg twice daily is a suitable alternative 2
First-generation cephalosporins, macrolides, or clindamycin alone should be avoided due to poor activity against Pasteurella multocida 2

The Society for Healthcare Epidemiology of America recommends using ampicillin-sulbactam, piperacillin-tazobactam, second-generation cephalosporins, or carbapenems for severe cat bite infections 1
Extended therapy may be necessary for septic arthritis (3-4 weeks) or osteomyelitis (4-6 weeks) 1

The American Academy of Emergency Medicine advises against closing cat bite wounds except for facial lacerations 2
Facial wounds can be closed primarily with concurrent prophylactic antibiotics after meticulous irrigation and debridement 2
Non-facial clean wounds seen early can be managed with Steri-Strips instead of sutures if approximation is needed 1
Infected wounds should never be closed, including those with purulent discharge, erythema, or signs of established infection 2

The Centers for Disease Control and Prevention recommend tetanus prophylaxis for all cat bites 1
Tetanus toxoid 0.5 mL intramuscularly should be administered if vaccination status is outdated or unknown 1
Booster shots are necessary for dirty wounds (all cat bites) if more than 5 years have passed since the last dose, and for clean wounds if more than 10 years have passed since the last dose 1

The World Health Organization suggests that rabies prophylaxis is generally not required for domestic cat bites in the United States, but consultation with local health departments is necessary for regional risk assessment 1
Small mammals, including domestic cats, are rarely infected with rabies 1
Prophylaxis should be considered only for feral or stray cat bites in high-prevalence areas 1
If indicated, both rabies immunoglobulin and vaccine should be administered to previously unvaccinated individuals 2

The Centers for Disease Control and Prevention warn that HIV-infected patients face increased risk of Bartonella infection (cat scratch disease) from cat bites and scratches 3
Immunocompromised patients should wash cat bite and scratch sites promptly 3
Cats should not be allowed to lick open wounds in HIV-infected individuals 3
Flea control can reduce Bartonella transmission risk 3

The American College of Emergency Physicians recommends elevating the injured extremity to reduce swelling 1
Follow-up within 24 hours by phone or office visit is necessary for all outpatients 1
Patients should be monitored for signs of infection, including increasing pain, redness, swelling, and purulent discharge 2
Hospitalization is necessary if infection progresses despite appropriate antibiotics, deep tissue involvement is suspected, or the patient is immunocompromised 1