author(s): patrick carter, daniel wachter, rockefeller ......epidemiology of burns 1-1.5% of...
TRANSCRIPT
Author(s):PatrickCarter,DanielWachter,RockefellerOteng,CarlSeger,2009-2010.License:Unlessotherwisenoted,thismaterialismadeavailableunderthetermsoftheCreativeCommonsAttribution3.0License:http://creativecommons.org/licenses/by/3.0/
WehavereviewedthismaterialinaccordancewithU.S.CopyrightLawandhavetriedtomaximizeyourabilitytouse,share,andadaptit.Thecitationkeyonthefollowingslideprovidesinformationabouthowyoumayshareandadaptthismaterial.Copyrightholdersofcontentincludedinthismaterialshouldcontactopen.michigan@umich.eduwithanyquestions,corrections,orclarificationregardingtheuseofcontent.Formoreinformationabouthowtocitethesematerialsvisithttp://open.umich.edu/education/about/terms-of-use.Anymedicalinformationinthismaterialisintendedtoinformandeducateandisnotatoolforself-diagnosisorareplacementformedicalevaluation,advice,diagnosisortreatmentbyahealthcareprofessional.Pleasespeaktoyourphysicianifyouhavequestionsaboutyourmedicalcondition.Viewerdiscretionisadvised:Somemedicalcontentisgraphicandmaynotbesuitableforallviewers.
CitationKeyformoreinformationsee:http://open.umich.edu/wiki/CitationPolicy
Use+Share+Adapt
MakeYourOwnAssessment
CreativeCommons–AttributionLicense
CreativeCommons–AttributionShareAlikeLicense
CreativeCommons–AttributionNoncommercialLicense
CreativeCommons–AttributionNoncommercialShareAlikeLicense
GNU–FreeDocumentationLicense
CreativeCommons–ZeroWaiver
PublicDomain–Ineligible:WorksthatareineligibleforcopyrightprotectionintheU.S.(USC17§102(b))*lawsinyourjurisdictionmaydiffer
PublicDomain–Expired:Worksthatarenolongerprotectedduetoanexpiredcopyrightterm.
PublicDomain–Government:WorksthatareproducedbytheU.S.Government.(USC17§105)
PublicDomain–SelfDedicated:Worksthatacopyrightholderhasdedicatedtothepublicdomain.
FairUse:UseofworksthatisdeterminedtobeFairconsistentwiththeU.S.CopyrightAct.(USC17 § 107)*lawsinyourjurisdictionmaydifferOurdeterminationDOESNOTmeanthatallusesofthis3rd-partycontentareFairUsesandweDONOTguaranteethatyouruseofthecontentisFair.Tousethiscontentyoushoulddoyourownindependentanalysis todeterminewhetherornotyourusewillbeFair.
{Contentthecopyrightholder,author,orlawpermitsyoutouse,shareandadapt.}
{ContentOpen.Michiganbelievescanbeused,shared,andadaptedbecauseitisineligibleforcopyright.}
{ContentOpen.MichiganhasusedunderaFairUsedetermination.}
Advanced Emergency Trauma Course
GhanaEmergencyMedicineCollaborativePatrickCarter,MD∙DanielWachter,MD∙RockefellerOteng,MD∙CarlSeger,MD
Burns
Presenter:CarlSeger,MD
Epidemiology of Burns
1-1.5%ofpopulationseesMDforburns/yearinUS
1.25-2.5millionburnseachyear 500,000EDvisits,50,000admits,5,000deaths
Mostburnscoverlessthan5-10%ofbodysurfacearea
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Types of Burns
Thermal Chemical Electrical
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Thermal Burns
Contact Flame Heat Scalding
Medscape
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Chemical Burns
Bothacidsandbasescanbedefinedascaustics,whichcausesignificanttissuedamageoncontact.
ACIDSproduceacoagulationnecrosisbydenaturingproteins,formingacoagulum(eg.eschar)thatlimitsthepenetrationoftheacid.
BASEStypicallyproduceamoresevereinjuryknownasliquefactionnecrosis
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Chemical Burns
Acids• Toiletbowlcleaners,draincleaners,metalcleaners,automobilebatteryfluid,fertilizermanufacturing,rustremovers,tirecleaners,tilecleaners,glassetching,dentalwork,refrigerant,andhairwaveneutralizers
Bases• Draincleaners,bleach,ovencleaners,mortar,plaster,andcement
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Electrical Burns LOW-VOLTAGE• Electricburnsalmostexclusivelyinvolveeitherthehandsororalcavity.
HIGH-VOLTAGE• Inburnsfromanelectricarc,thecurrentcoursesexternaltothebodyfromthecontactpointtotheground• Electriccurrentthatpassesbetweenthepowersourceandtheanatomicpointofcontact(entrancewound),andbetweenthepatient(exitwound)andthegroundingmechanism,causinghiddendestructionofdeepertissues
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
General Skin Anatomy and Physiology
SkinLayers• Epidermis• Dermis
SkinFunction• Protection
Pathogens Waterloss
• Tempregulation• Sensation• VitaminDSynthesis
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
NationalCancerInstitute,SEER
Classification
TraditionalClassification• 1stdegree• 2nddegree• 3rddegree
CurrentClassification• Superficialpartialthickness• Deeppartialthickness• FullThickness
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Burn Classification
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
K.Aainsqatsi,Wikipedia
1st Degree
Redness Dryskin Painfultotouch Painlasts48to72hrs Peelingskin
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
SourceUndetermined
2nd Degree; Partial Thickness
Involvesthetoplayersofskin.
Theskinisredandblistered.
Usuallypainful. Takesupto3-4weekstoheal.
Mayscar.
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
SourceUndetermined
3rd degree; Full thickness burns
Destroysalllaysofskinandunderlyingstructures.
Maylookbrownorblackandtissueunderneathmaybewhite.
Usuallynotpainful.
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
SourceUndetermined
Pathophysiology of Burns Cellulardamageat>45°C Dependentontemperatureandduration
• Singeretal.AcadEmergMed2000;7:1
Threezonesofinjury– Centralzoneofnecrosis Zoneofstasis(atriskofnecrosis) Zoneofhyperemia• JacksonBrJSurg1953;40:588BurnPathophysiology
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Pathophysiology of Burns Thermalinjurytriggersintenseinflammatoryresponse• Initialreleaseofhistamine,bradykinin• Increasedcapillarypermeabilitywiththirdspacing• ProgressivevascularocclusionbyPMN,RBCs• Releaseoffreeradicals,proteases
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Clinical Evaluation
History• Historyofevents–closedspace,toxicfumes• Evaluateforinconsistenciesorpatternssuggestingchildabuse(immersioninjuries)• PMH:AMPLE,Tetanusimmunizationstatus
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Clinical Evaluation • PhysicalExam
Assessforinhalationinjury• Signsnotalwayspresent• Singednasalhair• Carbonaceoussputum• Cough• Hoarseness• Dyspnea• AMS
• AssessSeverityofInjuryGhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Clinical Evaluation
DetermineSeverityofInjury• Size• Depth/Degree• Location-
Hands,face,genitals,feet,circumfrential• Ruleof9’s
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Rule of 9’s
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Burnsurgery.org
Initial Burn Management
ABCs Identifyandtreatassociatedinjuries Removesource,protectrescue Initialcoolingwithcoolwater(notcold) Coverwithdressing,leaveblistersintact Brushoffanymetalothermaterial Irrigationforchemicalburns
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
AirwayManagement• Secureairwayearly• Signsofimpendingairwayobstruction
Hoarseness,Stridor,Facialedema• EndotrachealintubationorsurgicalairwayifETnotpossible• Give100%O2forsuspectedsmokeinhalation
Acute Management
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Chemical Burns
Brushoffdrymaterialfirst
Takeoffanyclothingthatcaneasilyberemoved
Flushwithwaterforatleast20-30minutes
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
FluidResuscitation• ParklandFormula• UrineOutput• PediatricConsiderations
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Acute Management
Parkland Formula
4x(%bodysurfaceburned)xwtinKg Thisequalstheamountoffluid(inml)toreplaceina24hrperiod
Thefirsthalfinthefirst8hrs Therestinthenext16hrs
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Acute management
GeneralWoundCarePrinciples• BiologicalDressing• WoundDebridement
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Acute management
TopicalAgents• Silvadinecream• Coveringthewoundwithcleanlinens
Analgesia• Oftenverypainfulandrequirelargeamountofpainmedication
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Do’s and Don’ts of Burn Care
Do’s• Brushoffdrychemicalwhileinaprotectivesuit• Flushwithcoolwater• Coverwoundwithdrydressing• Keepvictimcomfortable
Don’ts• Applyice• Touchtheburn• Removepiecesofclothfromburnedarea• Cleansevereburns• Breakblisters• Useointmentonsevereburns
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Acute management
Escharotomy• Deepcircumferentialburnsoverneck,chestlimbs• CompromisedABC’s• Maybelifeorlimbthreatening• IncisionofeschartosubQfat• Avoidmajorvesselsandnerves• Anestheticsusuallynotrequired
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Escharotomy
MedscapeGhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Acute management
InhalationalInjuries• GeneralEvaluationandManagement• CarbonMonoxide
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Inhalational Injuries
Responsibleformostdeaths Evolutionmayrequireseveraldays Exposureofairwaysandlungstotoxicchemicals
Tracheobronchitis Airwayobstruction Pulmonaryedemawithin2-3days
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Inhalation Injury
CarbonMonoxide• HashigheraffinityforhemoglobinthanO2.• COpoisoningcanleadtoAMS,myocardialischemia,andseverelongtermneurologicsequelae• O2inhigherconcentrationsacceleratesCOelimination• Canalsotreatwithamylnitrate,sodiumnitrite,sodiumthiosulfate
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Complications of Burn Care
Infection AirwayConsiderations CircumferentialBurns
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Indications for Admission
Adults>15%2°DegreeBurns Children>10%2°DegreeBurns 3°burns>2% Face,hands,feet,perineum Seriousunderlyingdiseases Socialconsiderations
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
When does Cold Injury Occur? TheFactorsthatcontributetoColdInjury• Temperature• Durationofexposure• Immobilization• Moisture• Vasculardisease• Openwounds
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Recognize local cold injuries
Frostnip-Mildform,doesnotresultintissuedestruction,verypainful
Frostbite-intracellularicecrystals,cangetreperfusioninjury,Classifiedbasedoffofdepth
Medscape
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Frostbite
Medscape
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Medscape
Treating cold injuries
Donotdelay Removeclothing Warmedblankets Rewarmfrozenpart Preservedamagedtissue Preventinfection Elevatedexposedpart Analgesics,tetanus,andantibiotics
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Recognize hypothermia
Rapidorslowdropincoretemperatureto<35degreesC
Elderlyandchildrenatgreaterrisk Low-rangethermometerrequired
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Hypothermia clinical signs
Temperature<35degreesC DepressedLevelofconsciousness Gray,cyanotic Variablevitalsigns Absenceofcardiorespiratoryactivity
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Treating Hypothermia
ABCDE’s Rewarm Assessforassociateddisorders Bloodanalyses,includingK+andC++
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Treating hypothermia
Passiveexternalrewarming:Warmenviroment,blankets,IVfluids
Activecorerewarming:surgicalrewarmingtechniques
Notdeaduntilwarmanddead
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse
Questions?
Dkscully(flickr)
References Schwartz,L.,Balakrishnan,C.ThermalBurns.inEmergencyMedicine:AComprehensiveGuide.Tintinalli,Editor.2004,McGraw-Hill.p.1220-1226.
Harchelroad,F.,Rottinghaus,D.ChemicalBurns,inEmergencyMedicine:AComprehensiveGuide.Tintinalli,Editor.2004,McGraw-Hill.p.1226-1231
Fish,R.ElectricalInjuriesandLightningInjuries,inEmergencyMedicine:AComprehensiveGuide.Tintinalli,Editor.2004,McGraw-Hill.p.1231-1238
AmericanCollegeofSurgeons.Injuriesduetoburnsandcold,inAdvancedTraumaLifeSupportforDoctors7thedition.2004.p.231-241.
GhanaEmergencyMedicineCollaborativeAdvancedEmergencyTraumaCourse