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Venomous Fish Sting Cases Reported to Hong Kong Poison Information Centre: A Three-Year Retrospective Study on Epidemiology and Management

Objective To study the epidemiology of venomous fish sting injuries, management and clinical outcomes of injured patients reported to the Hong Kong Poison Information Centre (HKPIC). Methods All venomous fish sting cases reported to HKPIC from July 2005 to June 2008 were retrieved from its database (DATOX) and the Hong Kong Hospital Authority (HA) Electronic Patient Record (ePR) computer system for analysis. Results There were a total of 33 fish sting cases in this study. The average age of the patients was 43 years (range 20 to 84) and 24 patients were males. Most cases were injured by catfish (n=12), followed by stonefish (n=7) and lionfish (n=4). Ten cases sustained fish sting injury whilst at work. Five patients developed fish sting complications including cellulitis, subacute tenosynovitis, abscess formation and foreign body retention. No mortality was recorded. Within 7 cases of stonefish injury, 3 cases were classified as moderate effect outcome. Two patients received stonefish antivenom and none developed anaphylaxis. Conclusion The majority of marine envenomations did not result in significant morbidity and required only supportive management. However, stonefish injuries might be associated with an increased risk of severe local symptoms which therefore required aggressive treatment including antivenom.