Shark bite: Difference between revisions

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*Approximately 70-100 shark attacks worldwide per year and 5-15 deaths
*Approximately 70-100 shark attacks worldwide per year and 5-15 deaths


==Clinical presentation==
==Clinical Features==
*Direct traumatic effects depend on size and species of shark
*Direct traumatic effects depend on size and species of shark
*Typically, attack appendages of victims  
*Typically, attack appendages of victims  
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**Upper limb may be injured when the victim attempts to fight off the attack
**Upper limb may be injured when the victim attempts to fight off the attack
*Massive tissue injury
*Massive tissue injury
**Substantial tissue loss and extremity amputation common
**Substantial tissue loss from striping mechanism and extremity amputation are common
*Hemorrhagic shock
*Hemorrhagic shock
*Extremely high incidence of contamination with atypical microorganisms leading to wound infections
*Extremely high incidence of contamination with atypical microorganisms leading to wound infections
*Death is usually due to lack of prehospital resuscitation, hemorrhagic shock, or drowning

Revision as of 18:47, 5 September 2017

Background

  • White shark (Carcharodon carcharias), tiger shark (Galeocerdo curvier) appear to be disposed to human attacks than other species
  • Approximately 70-100 shark attacks worldwide per year and 5-15 deaths

Clinical Features

  • Direct traumatic effects depend on size and species of shark
  • Typically, attack appendages of victims
    • In 70% on surface swimmers, only the lower limb is involved
    • Upper limb may be injured when the victim attempts to fight off the attack
  • Massive tissue injury
    • Substantial tissue loss from striping mechanism and extremity amputation are common
  • Hemorrhagic shock
  • Extremely high incidence of contamination with atypical microorganisms leading to wound infections
  • Death is usually due to lack of prehospital resuscitation, hemorrhagic shock, or drowning