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Home | Toxicology Library | Antivenom | Stonefish Antivenom

Stonefish Antivenom

by Neil Long, Last updated January 12, 2016

Stonefish Antivenom (equine IgG Fab) can be used to treat envenomation from stonefish found in Australian Waters. It may also have a role in the treatment of bull rout, lion fish and cobbler stings.

Indication:

  • Clinical evidence of systemic envenomation e.g. cardiac failure
  • Severe localised pain unrelieved by intravenous opiates

Contraindication:

  • No absolute
  • Increased Risk of anaphylaxis in patients previously treated with antivenom or those who are suspected of equine sera allergy

Administration:

  • Place the patient in a monitored area where anaphylaxis can be managed.
  • Administer 1 ampoule for every two spine puncture wounds to a maximum of 3 ampoules undiluted by IM injection.
  • Alternatively, 1 ampoule maybe diluted in 100ml of 0.9% saline and administered intravenous over 20 minutes.
  • Repeat doses maybe given one ampoule at a time until resolution of local and systemic features. (Doses over 3 ampoules should be discussed with your toxicologist)
  • Antivenom can be given as a rapid intravenous push if the patient is haemodynamically unstable or in cardiac arrest.
  • Adult and paediatric doses are the same.

Adverse drug reactions:

  • Anaphylaxis: Cease antivenom infusion, treat as per anaphylaxis with oxygen, IV fluids and IM adrenaline. Recommence antivenom infusion when anaphylaxis has resolved. Rarely will ongoing administration of adrenaline be required to complete the antivenom infusion.
  • Serum Sickness: A benign and self limiting complication occurs 5-10 days after antivenom, symptoms include fever, rash, arthralgia and myalgia. Oral steroids for 5 days may ameliorate symptoms (e.g. prednisolone 50mg/day in adults and 1mg/kg in children). All patients should be warned about this complication who receive antivenom.

References

  • Currie BJ. Marine antivenoms. Journal of Toxicology Clinical Toxicology 2003; 41:301-308.
  • White J. A clinician’s guide to Australian venomous bites and stings: Incorporating the updated CSL antivenom handbook. Melbourne: CSL Ltd, 2012.

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About Neil Long

Emergency Physician working in Vancouver. Loves the misery of alpine climbing and working in austere environments. Supporter of FOAMed, tox, sim, ultrasound and any other project that can distract me for 5 seconds ..... oh look squirrel. | @doctorneillong | + Neil Long | LinkedIn

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