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Animal Related Injuries
Dr. Amitesh Aggarwal
LECTURER
DEPARTMENT OF MEDICINE
UCMS-GTBH
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Learning Objectives
� Identify major animal related injuries
� Use of Haddon’s matrix
� Familiarize with risk factors and preventive
strategies for common animal related injuries in
India
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Animal involvement in injury
� Envenomation (snakes, scorpions)
� Attack/bite (dog, crocodile, other wild animal)
� Fall from animal being ridden (most commonly horse)
� Crushed by animal (domestic)
� Allergic response to bee/wasp stings
� Disease carried by attacking animal (rabies, etc)
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INCIDENCE ?
Snake biteSnake bite
Dog bite
Scorpion bite
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INCIDENCE IN INDIA
Snake bite
� >5 million cases annually
� >50,000 deaths (registered) annually
Dog bite
� 15 million bitten by animals, mostly dogs, every
year
� 30 000 human deaths from rabies annually
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Injuries have causes -- they don't simply befall us from fate or bad luck.
WHY THIS TOPIC ?
To prevent injuries it is necessary to have information about the factors that
contribute to their occurrence.
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SNAKE BITE
�Most snakebites are caused by non-
venomous snakes
�Of all bites, envenomation < 20%�Of all bites, envenomation
�Mortality
< 20%
1-15%
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SNAKE BITE
�Occur most frequently in the summer season
�Agricultural and tropical regions report more snakebites than anywhere else
� Snake bites are most common to the lower � Snake bites are most common to the lower extremities.
�Victims typically male between 17 -27 years of age
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Three types of venomous snakes that cause the majority of major clinical problems
viper krait Cobra
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Prevention
�Mechanized farming methods
�Use of protective footwear and clothing
�Most likely to bite when they feel threatened, �Most likely to bite when they feel threatened,
are startled, provoked
�Have no means of escape when cornered
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Prevention
� It is important to tread heavily and cause
loud ground noises
�When dealing with direct encounters, best to �When dealing with direct encounters, best to
remain silent and motionless
� If the snake has not yet fled , step away
slowly
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Prevention
�Do not reach blindly into hollow logs, flip
over large rocks, or other potential snake
hiding-places
� Snakes are likely to approach residential
areas when attracted by prey
� Practicing regular pest control can reduce
the threat of snakes considerably
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Haddon’s matrix
Two dimensions
� first - categorization of timing of injury into 3 levels:
� “preexposure” factors that influence the likelihood� “preexposure” factors that influence the likelihoodthat a poisoning will occur
� “exposure” conditions that influence the exposureitself
� “postexposure” conditions that influence theconsequences of the exposure once it has taken place
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Haddon’s matrix
� Other dimension is classified according to:
� Host
� Agent� Agent
� Environmental factors that influence a poisoning
occurrence
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Haddon’s matrix
Human Agent Environment
Pre eventSummer season,
agricultural region
Manual farming
methods
Reaching blindly
into hollow logs etc.
Event
Post event•Slow emergency
response
•Non availability of
ASV
Not practicing
regular pest control
•Making local incision
•Application of
chemicals to wound
•Sucking wound site
Not wearing
protective footwear
Reacting violently,
panic
Pre existing
diseases like
bleeding diathesis
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DOG BITE
� Most animal bites in India (91.5%) are by dogs, of
which about are strays and pets.
� Bites to face, scalp predominate for child; upper
60% 40%
� Bites to face, scalp predominate for child; upper
extremity for adults
� Associated rabies occurs in 8.1/106 population
Delhi
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Incidence of human deaths from rabies in Asia, 2004 (WHO)
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Risk factors for dog bite
� Children, especially 0-5 years
� Households with dogs
� Certain dog breeds and dog characteristics� Certain dog breeds and dog characteristics
� Children and the elderly
� Alcohol consumption
� Male dogs
� Victim known to the dog
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Risk behavior
� Attempting to take food or water away
� Attacking
� Startling a resting or sleeping dog
� Approaching or touching a sick or injured dog� Approaching or touching a sick or injured dog
� Approaching dogs already fighting
� Behaving in a threatening/menacing manner around a puppy in the presence of adult dog
� Staring directly in eyes
� Running away
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Safety Tips
� Avoid dog ownership in house with young children
� Vaccination of pets
� Become familiar with mean or vicious breeds of dogs� Become familiar with mean or vicious breeds of dogs
� Train children on how to behave around dogs
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Safety Tips
� Teach them not to play too rough with dogs
� Never leave young children alone with dog
� Teach children never to go near a dog that’s eating or � Teach children never to go near a dog that’s eating or
gnawing on a bone or one they don’t know
� Report vicious or stray dogs to animal control
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Safety Tips
� If attacked and nowhere to go, fall face down and
cover your head and neck with your arms.
� Don’t try to outrun � Don’t try to outrun
� If dog is threatening to bite, give something like shoe
that it can bite instead
� Use low, firm voice to address threatening dog
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Haddon’s matrix
Human Agent Environment
Pre event(before attack)
•Fencing for dogs
•Chaining them
Dog trainingTeach kids about
safe behavior
Event(during attack)
Post event(after attack)
•Fast emergency
response
•availability of ARV
Alarm system if
fence open
Muzzle for
dangerous dogs
•Not to run
•Protect head
Report vicious or
stray dogs to
animal control,
impound
•General health
status
•Age of victim
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LARGE ANIMALS
�Horse, donkey, cow, bull, ox, camel etc
� Particularly in rural areas
�Horse related (falls 63-90%)
� Cattle horn injuries ( ) � Cattle horn injuries (deep penetrating injuries)
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Horse related
� Deaths are relatively uncommon
� Most serious injuries are to the head
� Equestrian riding has higher serious injury rates
� Farm animals - rates largely unknown
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PREVENTION
� Correct riding gear helmets, stirrups for horse
�Adult supervision of children
� Proper training� Proper training
� Careful while feeding, milking etc
�Run in zig zag course
� dehorning
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Scorpion Bite
� Envenomation
� CVS, CNS
� Scorpion stings, while painful, are rarely deadly� Scorpion stings, while painful, are rarely deadly
� Lower limb is most frequent site for bites -children
� Anti-venom is available
� Protective footwear and clothing in high-risk areas
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Bee sting
� Anaphylaxis
� death
PREVENTION
� Destruction of bee hives in residential areas� Destruction of bee hives in residential areas
� Cover the body as much as possible with clothing
� If single insect is flying around, remain still or lie face down on the ground.
� Swinging or swatting at may cause it to sting
� If attacked by several at same time, run
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THANK YOU