sri lanka college of paediatricians - pelc / slcp 1 ......•ecg 10/05/2015 pelc / slcp 8 sri lanka...
TRANSCRIPT
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Management of snake
bites in children in Sri
Lanka
1
Sri Lankan College of Paediatricians
PELC / SLCP
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Objectives
• Discuss the patterns of envenomation
• Discuss the structured approach to the
management of snake bites
• Identify the venomous snakes in Sri Lanka
PELC / SLCP 2
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Case
• 12 year old child sleeping on a mat on floor
• Went to sleep well previous night
• Got up at 4am with abdominal pain
• Given home remedy
• Started vomiting at 6am
10/05/2015 PELC / SLCP 3
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STEPS IN THE MANAGEMENT
•Relive anxiety
•ABCD
•Antivenom administration
•Managing anaphylactic reactions
410/05/2015 PELC / SLCP
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PELS Approach
“The Blueprint”
Triage
Initial Stabilisation
Position
Airway
Breathing
Circulation
Disability
Measurement
Monitoring
Reassess
Directed History and
Examination and Ix –
Reassess
Commence Specific
Treatment
Ongoing Care
10/05/2015 5PELC / SLCP
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Directed History & Examination
ASK ABOUT
Event
• Previously normal
• Slept on the floor
Symptoms
• Abdominal pain
• Vomiting
Past history
• Similar incidences in their locality
10/05/2015 PELC / SLCP 6
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Examination
•Flange marks on the right ankle
•Little oozing of blood
10/05/2015 PELC / SLCP 7
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INITIAL INVESTIGATIONS
Blood tests
• RBS
• Coagulopathy Ix• Whole Blood Clotting Time
(WBCT)
• Coagulation profile (PT, INR)
• FBC• Polymorphoneuclear
leucocytosis
• Renal –Urea/Creatinine/Serum Electrolytes
• LFT – SGPT/SGOT
• Urinalysis – negative for
blood
• ECG
10/05/2015 PELC / SLCP 8
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Sri Lanka Venmous snakes
Antivenin is indicated only for
• Cobra
• Krait
• Russell’s viper
• Saw scaled viper
10/05/2015 PELC / SLCP 9
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Antivenin has no benefit for
• Hump nosed viper
• Green pit viper
• Sea snakes
10/05/2015 PELC / SLCP 10
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Sri Lanka polyvalent antivenin is
indicated only for
•Witnessed bite + first symptom
•Evidence of systemic
envenomation
10/05/2015 PELC / SLCP 11
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EARLY NON SPECIFIC FEATURES
•Nausea / Vomiting -
•Back ache & Abdominal pain
•Neutrophilia
10/05/2015 PELC / SLCP 12
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COBRASystemic
Neuropathy- Predominant
Coagulopathy
Severe Local envenomation
Swelling with redness and pain
Blistering
Necrosis
10/05/2015 PELC / SLCP 13
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Russell’s viper (තිත් ප ොළඟො)Systemic manifestationsCoagulopathy- PredominantNeuropathyRenal
Severe Local envenomationSwelling with redness and pain BlisteringNecrosis
10/05/2015 PELC / SLCP 14
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Sri lankan crait
(මුදු කරවලො/ප ොපළොන්කරවලො)
•Neuropathy –
•Respiratory failure
10/05/2015 PELC / SLCP 15
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Common crait
(පෙල්කරවලො/දුනු කරවලො/මගමරුවො)
• Neuropathy –
• Respiratory failure
10/05/2015 PELC / SLCP 16
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Saw scaled viper
(වැලි ප ොළඟො)
10/05/2015 PELC / SLCP 17
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Pre-hospital
management (First aid)
•Reassurance
•Wash and clean the area
•Minimum mobilization
•No tourniquet
•Analgesia with – PCM ( No NSAID)
•Remove rings/ anklets
18PELC / SLCP
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Hospital Management
19
• Blue print
• Triage / Position / ABCD
• Assessment of Envenomation
• Specific Management – Indication for Antivenom
• Reassurance
PELC / SLCP
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Specific Treatment
• Antivenom
• Indicated
• Precautions
• How many vials
• How fast
• Monitoring
10/05/2015 PELC / SLCP 20
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ANTIVENIN PREPARATION
• Antivenin a total of 10 vials is given as a single dose for
all ages.
• Each vial is reconstituted in 10 ml of Normal Saline.
• Minimize bubbling by avoiding shaking
• Further dilution depending on age and weight
• In older children the reconstituted antivenin can be further
diluted to make total of 400 ml with normal saline.
10/05/2015 PELC / SLCP 21
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ANTIVENIN ADMINISTRATION
• In infants and small children this can be given directly with
an infusion pump.
• First vial to be given over 15 min.
• Complete 10 vials in 1 hour
• Look for signs of anaphylaxis
• Second 10 vials can be considered after 6hrs
depending on the severity of the envenomation.
• More than 20 vials is not encouraged.
10/05/2015 PELC / SLCP 22
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Administration of antivenin who
already had allergic reaction • Call for help
• A – B – C – D – E
• Adrenaline sub-cut
• Start antivenin
• Have IM adrenaline ready
• Close observation for allergic reactions
10/05/2015 PELC / SLCP 23
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PELC / SLCP 24
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Controversies and challenges
Snake identification
Non specific manifestations
WBCT interpretation
Repeat antivenin
Multi-organ involvement +/-DIC mix with toxin manifestations
Prolonged ventilation in Krait bites
10/05/2015 PELC / SLCP 25
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Thank you
PELC / SLCP 26