modern military trauma care: lessons learned from 16 …...2018/05/17 · •kragh jf, et al....
TRANSCRIPT
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Modern Military Trauma Care: Lessons Learned
from 16 Years of Conflict
Joe DuBose MD, FACS FCCM
Associate Professor of Surgery
Uniformed Services University of the Health Sciences
Lt Col USAF MC
Director
Baltimore Center for the Sustainment of Trauma and Readiness Skills
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Team Aerospace Begins Here!
The only one to benefit from war is a young surgeon. Hippocrates
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BAS
Level 1
Point of Injury to Definitive Care
Surgical Capability
CASEVAC1 Hour
Intratheater
EVAC24 Hours
Intertheater
EVAC48-72 Hours Forward Surgical
Teams
Level 2
CSH, EMF,
Theater Hospital
Level 3 CONUS/OCONUS MTFLevel 4/5
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A Story of Military – Civilian Exchange
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Lessons learned from 16 years of combat casualty care
• Prehospital care• Tourniquet utilization
• Hemostatics
• Needle thoracostomy
• Hypothermia prevention
• Hospital Care• Resuscitation / Transfusion
• Vascular Injury care / Shunting
• Damage Control Surgery
• En route Care• Critical Care Air Transport (CCAT)
• Organization and Structure• Joint Trauma System
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Early lessons learned in GWOT (2001-2005)
• Complex mechanisms and injuries
• Time lag to definitive care
• Need to optimize coordination of care
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Opportunity to improve organization
Point of Injury
FSMC
FST
Evac#1
CSH
Evac #2
CSH
CSH
Level I
TRIAGE
UNDER-triage
Major trauma
Avoidable
risk
MAJOR
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THEATER EVALUATION
• OEF/OIF• 2003 Army SG-Directed Evaluation
• Findings• Unorganized delivery of trauma care on the battlefield in the AOR
• Medical records not reliably following casualties to next care level
• Solution: Creation of a Joint Theater Trauma System Team
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3Right Patient, Right Place, Right Time, Right Care
JTTS Mission
• Improve organization and delivery of trauma care
• Improve communication among clinicians in the evacuation chain to ensure continuity of care and access to data
• Populate the Joint Theater Trauma Registry (JTTR) to evaluate care provided, document outcomes, and facilitate conduct of formal research
• Evaluate and recommend new equipment or medical supplies for use in theater to improve efficiency, reduce cost, improve outcomes
• Facilitate medical performance improvement to promote real-time, data-driven clinical process improvements and improved outcomes
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19Right Patient, Right Place, Right Time, Right Care
Cause of Injuries
Source: Joint Theater Trauma Registry (JTTR) September 2001 - February 2008
All Other 18%Battle
Firearms
17%
Munitions/ Explosive Devices
Non-Battle
65 %
MVC
26%
Falls 19%
Machinery
11%
All Other
27%
Struck By / Against
7%
Overexertion
10%
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20Right Patient, Right Place, Right Time, Right Care
Casualties Requiring Blood
0
50
100
150
200
250
300
Ju
n 0
6
Sep
06
Dec 0
6
Mar
07
Ju
n 0
7
Sep
07
Dec 0
7
Mar
08
Pat
ein
ts
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21Right Patient, Right Place, Right Time, Right Care
OIF & OEF Battle Injuries
by Body Region
Source: JTTR September 2001 - February 2008
Face 7%
Eye 3%
Head/Neck 2%
Head/Neck
27%
Chest 5%
Abdomen 6%
Pelvis/ Urogenital 3%
Trunk/Back/Buttock 1%
Torso
15%
3%Spine/Back
3%
Shoulder/Upper Arm 6%
Forearm/Elbow 6%
Wrist/Hand/Fingers 7%
Other 3%
Upper
Extremities
22%
Hip/Upper Leg/Thigh 5%
Foot/Toes 5%
Knee/Lower Leg/Ankle 9%
Lower
Extremities
31%
Other 12%
Other 2%
Head/Neck Unspec 3%
Brain Injury (TBI) 12%
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JTTS – The Need: The Golden time frame
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Military Evolution – Topical Hemostatics
4 yard x 3” non woven gauze Kaolin coated
Individual First Aid Kit (IFAK)
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Combat Gauze
•Kheirabadi BS, et al. - J Trauma, 2009• Porcine arterial hemorrhage model
• Hemcon
• Celox-D
• Trauma-Stat
• Combat Gauze
• Placebo gauze
• CG superior to all comparisons
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Combat Gauze in Clinical Action
• Ran Y, et al. – Prehospital Disaster Med, 2010
• Experience during Operation Cast Lead
• ALS providers
• 14 uses of CG to different sites
• 93% blast or GSW
• Success rate 79% (11/14)
• No complications or adverse events
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Military Evolution - Tourniquets in Combat
“We saw 1 tourniquet per 8h ED shift, that is, in 8% of the casualties admitted.”
Dr. John Kragh, March 2007, Iraq Protocol 06-10:
232 patients, 309 limbs, 428 tourniquets in 1 tour
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Historical Problems with tourniquets
• Limited available tourniquet science
• Outdated user knowledge
• Inadequate device designs
• No doctrine
• Little or no training
• Little experience
• Rare clinical research
All the essentials were inadequately addressed
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Fixing the problem: Tourniquets Tested by IUSA ISR
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Combat Application Tourniquet (CAT)
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January 2007
640,000 CAT tourniquets sold to:
• US Army, Navy, Marines, Reserves, SOF
• Canadian Forces
• Australian Forces
• British Royal Army
• Iraqi Defense Forces
• FBI
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Military Tourniquet use
• Kragh JF, et al. – J Trauma, 2008
• 428 tourniquets, 232 patients
• Transient nerve palsies – 1.7%
• No association between tourniquet time and morbidity
• No amputations solely from tourniquet use
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Military Tourniquet use
• Kragh JF, et al. – Ann Surg, 2009.
• Tourniquet placement survival• Overall = 87%• Without shock = 90%• After onset of shock = 10%
• Location of placement and mortality• Pre-hospital = 11%• In ED = 24%
• Indication present but tourniquet not utilized • (5 casualties) = No survivors
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Keys to Tourniquet Use on the Battlefield
• BEFORE shock onset: better survival– Tourniquet prevents shock onset
• Use tourniquet as soon as it is indicated
– Before extraction and transport
– Speed is associated with survival
• “C-A-B”– Circulation, then Airway and Breathing
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If we can teach these folks….
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Why can’t we teach these folks….
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Las Vegas Mass Shooting – 201758 killed; more than 500 injured
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The 2017 Vegas example….
• 10 minutes of active shooting
• Emergency responders• Initially confused about nature
and even location of incident
• Some estimates say that EMT’s didn’t reach the actual concert grounds until 30 MINUTES after shooting took place
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Who was available to respond?
•Of 595 injured, only 200 were transported ambulance
•Delivered in commandeered pickup trucks, private cars, taxis and on foot
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Who responded?
• Some concertgoers were off-duty medical professionals
• “We had people who were shot holding pressure on other peoples wounds” - local EMT as quoted by New York Times
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Military Evolution – Resuscitation
15
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Dilution
• Traditional teaching suggested that dilution is not commonly an issue until over one blood volume (10 to 12 units PRBC’s) has been given
• Lim Jr RC, et al. Trauma, 1973; 13(7):577-82
• Wilson RF, et al. Trauma, 1971;11(4):275-85.
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Damage Control Resuscitation
:
# #
RATIO2007
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Damage Control Resuscitation
OVER 24
HOURS
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Civilian results
• Holcomb et al. – J Trauma, 2011
• 22 Level 1 Trauma Centers
• 12 months
• N = 2,312 patients requiring transfusion
• N = 643 Massive transfusions
• Lower ratio practices associated with:
• Decreased truncal hemorrhage as cause of death
• Overall 30 day survival
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Causes of dilution after trauma
• Movement of interstitial fluid into the intravascular space with reduced BP
• Administration of resuscitation fluids
• Administration of IV fluids as carriers for drugs
• Administration of blood components
Hemorrhage
Resuscitation
Hemodilution
Coagulopathy
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Reality: Dilution is inevitable when giving blood products
Thus: 1 U PRBC + 1 U Plts + 1 U FFP
660 mL with Hct 29%,
Plts 88 K/µL
Coagulation activity 65%.
• Components
• 1 U PRBC = 335 mL with Hct 55%
• 1 U Plts = 50 mL with 5.5 x 1010 Plts
• 1 U plasma = 275 mL with 80% coagulation activity
• Whole blood 500 mL
• Hct 38%–50%
• Plts 150 K–400 K
• Plasma coagulation factors = 100%
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Fresh Whole Blood
• Potential benefits
• Warm
• Appropriate ratios present
• Fresh = No age-related degradation
• Risks higher• Mismatch
• pre-screened donors preferred
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Military Experience – Whole blood utilization
• Spinella PC, et al.
• World J Surg - 2008
• 87 patients • Coalition soldiers• Foreign nationals• Enemy combatants
• 545 units FWB
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WBT Military Experience
• Spinella PC, et al. – J Trauma, 2009• Retrospective study
• Combat casualties receiving at least 1 u PRBC
• N = 354
• 100 received WBT; 254 component therapy
• WBT group had significantly higher 24h and 30 survival
• Multivariate logistic regression analysis
– WBT and volume of WBT transfused independently associated with improved 30 day survival
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Civilian Whole Blood Utilization?
• Barriers exist
• Under investigation
• Some centers presently utilizing• UT Houston – Anesth Analg, 2018 May 15
• Potential value for mass casualty incidents? Rural trauma?
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United States Army Institute of Surgical ResearchCombat Casualty Care
PR
OTE CT
PR
OJ
E C T
- SU S
T
AIN
T
INS
TITU
TEOF SURGICAL RESE
AR
CH
Death on the BattlefieldImplications for Prevention, Training,
and Medical Care
Brian Eastridge
COL, MC, USA
Trauma Consultant
US Army Surgeon General
US Army Institute of Surgical Research and
Armed Forces Medical Examiner Service
2012
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Battlefield Acute LethalityPotentially Survivable n=1,075
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Potentially survivable combat deaths due to hemorrhage (n=984)
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It’s a civilian problem as well….
NTDB Study:
Mortality from hemorrhage at non-compressible sites = 44.6%
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Resuscitative Thoracotomy for Trauma
• The only hope for a patient in / nearing extremis despite resuscitation after NCTH?
• Indications?
• Threshold for use?
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Innovations in EDT – last 40 years
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Resuscitative Endovascular Occlusion of the Aorta (REBOA)
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Basic Concept
• Preservation perfusion to brain / heart
• Occlusion of arterial flow above bleeding source
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• What can we translate from modern approach to ruptured abdominal aortic aneurysms?
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Resuscitative Endovascular Balloon Occlusion of the Aorta (REBOA) for Trauma - History
• Hughes CW. Use of intra-aortic balloon catheter tamponade for controlling intra-abdominal hemorrhage in man. Surgery 1954;36(1):65–8
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Resuscitative thoracotomy and REBOA
≠
≠
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The spectrum of decompensation
REBOA
Resuscitative Thoracotomy
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Concept to Prototype to Commercialized Device
JAMA Surg 2017; Published online Sept 20 2017
Canadian Medical Devices
Conformity Assessment
System (CMDCAS) Certified
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Justin D. Manley, MD, Benjamin J. Mitchell, Joseph J. DuBose, MD
Todd E. Rasmussen, MD
Air Force Special Operations Command; University of Alabama Birmingham Medical
Center, Birmingham, Alabama
David Grant Medical Center, Travis, AFB; University of California – Davis, California
DoD Combat Casualty Care Research Program, Fort Detrick, Maryland
Uniformed Services University - Walter Reed Department of Surgery
Bethesda, Maryland
Evolution of Resuscitative
Endovascular Balloon Occlusion of
the Aorta (REBOA) to a Wartime,
Pre-Hospital Hemorrhage Control &
Resuscitation Adjunct
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IN THE LAB, ON THE
BATTLEFIELDBreakthrough in Pre-Hospital
Combat Casualty Care• Case series of resuscitative
endovascular balloon occlusion of
the aorta (REBOA) in a pre-
hospital, combat casualty care
setting in Operation Inherent
Resolve
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IN THE LAB, ON THE
BATTLEFIELD
Care Setting
• Resuscitation room
3km (10-15 minutes)
from point of injury
& 2 hours from next
higher echelon of
care which is level II
equivalent
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IN THE LAB, ON THE
BATTLEFIELDSpecial Operations Surgical
Team (SOST)• Six member, surgical & resuscitation team
- General surgeon (MD)
- Emergency medicine (MD)
- Anesthesia provider (CRNA)
- Respiratory therapist (CRT)
- Registered nurse (CCRN)
- Registered nurse (CCRN)
• Team composition may vary depending on
operational scenario but is not dependent
on sub-specialty trained surgeon
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IN THE LAB, ON THE
BATTLEFIELDUltrasound Guided
Percutaneous Access
• Vscan ultrasound device (GE Healthcare, Inc.)
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IN THE LAB, ON THE
BATTLEFIELDIntraoperative Bleeding
Control & Blood Pressure
• ER-REBOA™
catheter secured
in femoral artery
sheath &
inflated during
damage control
laparotomy
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IN THE LAB, ON THE
BATTLEFIELDPatients & Course of
Resuscitation
• There were no ER-REBOA
catheter-related complications
and all patients survived
through their transport to and
arrival at the next higher
echelon of care
• 50% placed by EM providers
• 50% placed by general surgeons
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Northern et al. – April 2018J Trauma Acute Care Surg
• 20 combat casualties, 18 months• Mean SBP 71 mm Hg
• Explosion and GSW
• 20 successful REBOA utilization in conjunction with Whole Blood use
• 100% survival to next echelon of care• No access or REBOA complications
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The evolution continues
• Prehospital care• Tourniquet utilization
• Hemostatics
• Needle thoracostomy
• Hypothermia prevention
• Hospital Care• Resuscitation / Transfusion
• Vascular Injury care / Shunting
• Damage Control Surgery
• En route Care• Critical Care Air Transport (CCAT)
• Organization and Structure• Joint Trauma System
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Thank you