Dog bites have commonly mixed flora, with a 50% incidence of pasturella. Primary closure can be done most places except the hands and feet. For open wounds (such as the hands and feet) patients should receive prophylactic augmentin to cover most bacteria, similar to cat or human bites. Dog bites that are closed typically do not require prophylactic antibiotics. Wound CareThere is little evidence-based medicine to support a specific fluid for wound care. Normal saline or tap water have both been shown to have a similar infection rate (4-6%). Betadine-containing solutions have not been shown to improve outcomes or decrease infection rates. Some surgical research supports the use of betadine solutions. ClosureThe primary reason for wound closure is for improved cosmesis. A RCT of patients presenting with dog bites found that closure of dog bite wounds does not increase the risk of infection or complication, and closed wounds had better cosmetic appearance. Hand wounds, regardless of treatment, did have a higher rate of infection. AntibioticsPatients presenting with hand wounds from dog bites should receive prophylactic antibiotics. Per a Cochrane review, there is some evidence showing that dog bites in the hand have reduced infection rates with prophylactic antibiotics. The same review did not show a reduction in cats or for all dog bites.
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February 2018
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