Link to Problems for Discussion
Australian Snakes
BROWN SNAKES
Objectives
- Detail the clinical effects of Brown snake envenomation.
- Understand the differences in the toxicity of different species of Pseudonaja.
- Detail the appropriate first aid for snake bites.
- Understand the indications for Brown snake antivenom.
- Understand how to monitor victims of Brown snake bite and how long asymptomatic patients should be observed in hospital.
- Understand the pros and cons of pre-treatment prior to administering antivenom.
- Understand when fresh frozen plasma should be administered for coagulopathy following brown snake envenomation.
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TAIPAN
Objectives
- Detail the clinical effects of Taipan envenomation.
- Appreciate the rapid time course following Taipan envenomation and the severity of effects.
- Understand the indications for Taipan antivenom.
- Understand how to monitor victims of Taipan snake bite and how long asymptomatic patients should be observed in hospital.
- Understand the risk of serum sickness following antivenom administration and the potential role for prophylactic corticosteroids.
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TIGER SNAKE
Objectives
- Detail the clinical effects of Tiger snake envenomation and related species.
- Understand the differences in the toxicity of different species of Notechis, Austrelaps, Tropidechis and Hoplocephalus.
- Understand the indications for Tiger snake antivenom.
- Understand how to monitor victims of Tiger snake bite.
- Understand the pros and cons of pre-treatment prior to administering antivenom.
- Understand when fresh frozen plasma should be administered for coagulopathy following Tiger snake envenomation.
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- Tiger Snakes and Clinically Related Species ( Rough scale snakes, Copperhead snakes, Broad-headed snakes)
MULGA, COLLETT'S BUTLER'S MULGA AND EASTERN SMALL EYED SNAKES
Objectives
- Understand the distribution of these snakes
- Compare the toxicity of Mulga, Collett’s and Butler’s Mulga snakes with the other members of the genus Pseudechis.
- List the investigations required for monitoring a bitten patient.
- Detail the indications for antivenom treatment.
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DEATH ADDERS
Objectives
- To understand the clinical effects of Death Adder envenomation.
- Describe the management of Death Adder envenomation.
- Discuss therapies other than antivenom and when these may be indicated.
- Comment on the prognosis of treated Death Adder envenomation and the response to antivenom.
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BLACK SNAKES
Objectives
- Detail the clinical effects of Black snake envenomation and related species.
- Understand the differences in the toxicity of different species of Pseudechis and Demansia.
- Understand the indications for Tiger snake antivenom and why this is preferable to Black snake antivenom.
- Understand how to monitor victims of Black and Whip snake bite
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REFERENCES
- Yeung JM, Little M, Murray LM, Jelinek GA, Daly FFS. Antivenom dosing in 35 patients with severe brown snake (Pseudonaja) envenoming in Western Australia over 10 years.Med J Aust 2004;181:703-705. (fulltext)
- Johnston MA, Fatovich DM, Haig AD, Daly FFS. Successful resuscitation after cardiac arrest following massive brown snake envenomation. Med J Aust 2002;177:646-649. (fulltext)
- Isbister GK, O’Leary MA, Schneider JJ, et al. Efficacy of antivenom against the procoagulant effect of Australian brown snake (Pseudonaja sp.) venom: In vivo and in vitro studies. Toxicon 2007;49:57-67.
- Southern DA, Callanan VI, Gordon GS. Severe envenomation by the taipan (Oxyuranus scutellatus). Med J Aust 1996;165:662-664.
- Lalloo DG, Trevett AJ, Warrell DA. Severe envenomation by the taipan (Oxyuranus scutellatus).[letter] Med J Aust 1996;167:54-55.
- Sutherland SK, Tibballs J. Oxyuranus microlepidotus: the small-scaled or fierce snake. Australian Animal Toxins. 2nd Edition Melbourne: Oxford University Press; 2001. p. 187-193.
- Jelinek GA, Rogers IR, Corkeron MA, O’Donnell A. Severe multi-system failure following delayed presentation with tiger snake envenomation. Anaesth Intensive Care 1998;26:584-585.
- Parkin JD, Ibrahim K, Dauer RJ, Braitberg G. Prothrombin activation in eastern tiger snake bite. Pathology 2002;34(2):162-166.
- Isbister GK, Currie BJ, Little M, Daly FFS, Isbister JP. Coagulopathy from tiger snake envenoming and its treatment [correspondence]. Pathology. 2002;34(6):588-590.
- Patten BR, Pearn JH, DeBuse P, Burke J, Covacevich J. Prolonged intensive therapy after snake bite. Med J Aust 1985;142:467-469.
- Campbell CH. Fatal case of mulga (Pseudechis australis) snakebite. [letter] Med J Aust 1969;1(8):426.
- Rowlands JB. Mastaglia FL. Kakulas BA. Hainsworth D. Clinical and pathological aspects of a fatal case of mulga (Pseudechis australis) snakebite. Med J Aust 1969;1:226-30.
- Sutherland SK, Tibballs J. Australian Animal Toxins. 2nd Edition. Melbourne: Oxford University Press; 2001. p. 203-208.
- Lalloo DG, Trevett AJ, Black J, Mapaoj et al. Neurotoxicity, anticoagulant activity and evidence of rhabdomyolysis in patients bitten by death adders (Acanthophis sp.) in southern Papua New Guinea. Quarterly J Med 1996;89:25-35.
- Currie B, Fitzmaurice M, Oakley J. Resolution of neurotoxicity with anticholinesterase therapy in death-adder envenomation. Med J Aust 1988;148:522-525.
- Pearn J, McGuire B, McGuire L, Richardson P. The envenomation syndrome caused by the Australian Red-bellied Black Snake Pseudechis porphyriacus. Toxicon 2000;38:1715-1729.
- Naja melanoleuca. Also available
- Crotalus atrox. Also available
- Hung DZ, Wu ML, Deng JF, Lin-Shiau SY. Russell’s viper snakebite in Taiwan: differences from other Asian countries. Toxicon 2002;40:1291-8
ADDITIONAL REFERENCES
From PubMed search: isbister gk, o'leary…