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MANAGEMENT OF BLAST INJURIES
Section IV
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Personal Protective Equipment
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Personal protective equipment
A B
D
C
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Prehospital
• Incident command • Securing the area• Secondary device
survey• Triage categorization• Regular trauma
protocols
• Radiation survey• Survey for chemical
contamination• Did the blast occur in
an enclosed setting?
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Secondary Devices
• Secondary explosive devices are designed to explode after a primary explosion has attracted large numbers of responders to the scene to inflict additional injury, damage, and fear.
• Hidden in out of view locations, or camouflaged
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U.S. Fire Administration Guidelines
• Anticipate the presence of a secondary device at any suspicious incident.
• Search for a secondary device before moving into the incident area.
• Avoid touching or moving anything that may conceal an explosive device.
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U.S. Fire Administration Guidelines
• Effectively manage the scene with boundaries, exclusion zones, triage areas, etc.
• Evacuate victims and non-essential personnel as quickly as possible.
• Preserve the scene as much as possible for evidence collection and crime investigation.
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Prehospital Special Considerations
• Judicious use of IV fluids:– Overzealous fluid administration may worsen
primary pulmonary injury and bleeding• Cautious mechanical ventilation:
– Mechanical ventilation and positive pressure may increase the risk of alveolar rupture and air embolism
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Prehospital Special Considerations
• Cautious air transport• Air embolization:
– Place patient in a prone left lateral position with the head down
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Mass Casualty Triage• Dynamic process• START (Simple Triage
And Rapid Treatment)– RPM
• Respirations > 30• Pulse Cap refill >2 sec• Mental status
• JumpStart for Pediatrics
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Triage Categorization
• Red• Yellow• Black • Green
• Immediate• Delayed• Dead or
expectant• Minimal
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New Proposed National Triage Systems: SALT
• S• A• L• T
• Sort• Assess• Life threatening interventions• Transport &/or Treatment
Disaster Med Public Health Preparedness. 2008;2(Suppl 1):S25–S34
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Sort
• Walk• Wave• Can’t move or waive
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Assess
• Individual assessment of the three categories in order
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Life-saving Interventions
• Open airway• Two rescue breaths• Control hemorrhage• Auto-injector antidotes
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Triage
• Expectant or Gray category – Resource based – Dynamic
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Transport
• Transport to the nearest facility of red patients
• Green patients should be directed to other hospitals that are further away and that are not necessarily level I trauma centers
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TM Perforation• Keep dry• Prophylactic topical antibiotic
– Gentamycin ointment
• Outcome is good– Mixed frequency hearing loss with good subjective
recovery– High frequency sensorineural hearing loss may be more
persistent– Severity inversely proportional to distance from
bombing
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TM – Perforation
• Follow up is needed:– Assess for middle-ear damage– Audiometry– Cholesteatoma– Perilymphatic leak in patients with vertigo
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Blast Lung Injury
• Should not rely on TM rupture to predict lung injury:– TM perforations are found in only 60%
of patients with clinically significant injuries
– Clinically significant injuries are present in less than 30% of patients with TM perforations
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Blast lung injury• Patients with normal CXR and
ABGs, who have no complaints that would suggest BLI, may be discharged after a brief observation period
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Blast lung injury• Management similar to pulmonary
contusions• Complex fluid management• Mechanical ventilation will increase
the risk of air embolization
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Management of Secondary Injuries
• As per protocol• Watch for unusual
shrapnel such as nails and bolts
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Bombing Victim
Spinal Cord
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Management of Tertiary Injuries
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Management of Tertiary injuries
• As per trauma protocols• Look for crush syndrome
especially in structural collapse:–Myoglobinurea–Renal failure–Hyperkalemia
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Management of Crush Syndrome
• IVF:– Start in the field
• Urinary alkalinization:– Myoglobinurea, Urine pH>7
• Mannitol• Hemodialysis:
– Anuric patients, acidemic patients– Correction of electrolyte abnormalities– Advanced planning is needed for surge capacity
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Management of Quaternary injuries
• Inhalational injuries• Carbon monoxide• Hydrogen cyanide• Chemical bombs or explosions• Contamination with radionuclides and
exposure to gamma radiation
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Carbon Monoxide
• 100% Oxygen therapy• Hyperbaric oxygen therapy
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Cyanide Antidote Kit
• AKA the Lilly kit• Contains:
– Amyl nitrite pearls– Sodium nitrite– Sodium thiosulfate
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Hydroxocobalamin (Cyanokit®)
• 5 g IV over 15 minutes
• May repeat dose if no response and patient is critically ill
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Adverse Effects of Hydroxocobalamin
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Thank you