High-pressure water-gun injection injuries are different from injection
injuries that are caused by other agents, in that they are associated with
extensive subcutaneous emphysema but only slight soft-tissue inflammation
or destruction. The cases of six patients who had such an injury were
reviewed. It was found that local irrigation and debridement, together with
a short course of penicillin or a broad-spectrum cephalosporin, resulted in
complete recovery from this relatively benign variant of high-pressure
injection injury.