Update on Hemostatic Resuscitation RAHUL J ANAND MOLLY FLANNAGAN DIVISION OF TRAUMA, CRITICAL CARE,...
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Transcript of Update on Hemostatic Resuscitation RAHUL J ANAND MOLLY FLANNAGAN DIVISION OF TRAUMA, CRITICAL CARE,...
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Update on Hemostatic Resuscitation
RAHUL J ANAND
MOLLY FLANNAGAN
DIVISION OF TRAUMA, CRITICAL CARE, AND EMERGENCY GENERAL SURGERY
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Massive Transfusion
Defined as transfusion of >10 U blood or
Pt blood volume in 24 hrs
Causes◦ Trauma◦ Emergency surgery◦ AAA repair◦ GI hemorrhage
CHEST 2009; 136:1654 –1667
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Massive transfusion in trauma
Trauma patients with MT have high mortality (19 to 84%)
Mortality Is directly related to number of PRBC units received
CHEST 2009; 136:1654 –1667
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Traditional Massive Transfusion
Crystalloid fluid
PRBC (lacking in clotting factors)
Dilutional coagulopathy
Hypothermia
Acidosis
Liver dysfunction due to shock
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Hemostatic Resuscitation
Traditional MT underestimates treatment needed to reverse coagulopathy
Normalization of body temperature
Hemorrhage control
Transfusion with ◦ FFP◦ Platelets◦ Cryoprecipitate
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Hemostatic Resuscitation Emerging Consensus
Expedite hemorrhage control
Limit crystalloid resuscitation to prevent dilutional coagulopathy
Transfuse PRBC:FFP:Plts in a 1:1:1 fashion
Frequent lab monitoring◦ Lactate◦ Ionized calcium◦ Electrolytes◦ Platelets, Fibrinogen◦ TEG / ROTEM
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So YOU have MASSIVE BLEEDING – now what?
Secure Access◦ 2 Large bore IV, or Central line or ◦ Intra-Osseus line
Begin Aggressive Resuscitation◦ (ATLS suggests 2 L or warmed crystalloid)
STOP the bleeding
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Damage Control Resuscitation
FOCUSED SURGERY
PERMISSIVE HYPOTENSION
HEMOSTATIC RESUSCITATION
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CHOICE OF RESUSCITATION
FLUID
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Choice of Crystalloid
No real difference between using LR and NS
LR MAY exacerbate hyperkalemia
Hypertonic Saline is no better
TAKE HOME – USE NS (Sparingly)
Kaafarani et al. Scandinavian Journal of Surgery 103:81-88, 2014
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Why not Resuscitate with Colloid?
Theoretically may stay intravascular?
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SAFE TRIAL
No difference in mortality, ventilator days, renal failure, or LOS
Subgroup analysis – worse mortality in TBI patients
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Colloid Take Home Point
Resuscitation is EXPENSIVE
MAY be harmful in patients with TBI, BURN, Trauma
Start with NS – then use PRODUCT if you have to
X
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HYPOTENSIVE RESUSCITATION
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Still Bleeding? – Don’t aim for “NORMAL BP”
Permissive Hypotension – especially in those with no brain or spinal cord injury until surgical control of bleeding
Maintain cerebral perfusion – SBP 80’s acceptable until bleeding stopped
“Hypotensive resuscitation is a safe strategy for use in the trauma population and results in a significant reduction in blood product transfusions and overall IV fluid administration … maintaining a target minimum MAP of 50 mm Hg, rather than 65 mm Hg, significantly decreases postoperative coagulopathy and lowers the risk of early postoperative death and coagulopathy.”
Kobayashi et al. Surg Clin N. Am 92 (2012) 1403-1423Morrison et al. J Trauma. 2011 Mar;70(3):652-63
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N Engl J Med 1994; 331:1105-1109 October 27, 1994
• Landmark NEJM article
• Compared immediate versus delayed fluid resuscitation before operative intervention
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Delayed group compared to traditional resuscitation
Delayed group received no more than 100cc fluid prior to OR
Delayed group had better survival, fever complications, shorter LOS
N Engl J Med 1994; 331:1105-1109 October 27, 1994
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Target BP before Hemorrhage Control
Accept MAP of 50
Decrease dilutional coagulopathy
Avoid hypothetical “pop the clot”
Restrict inflammatory cascade
Kaafarani et al. Scandinavian Journal of Surgery 103:81-88, 2014
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1:1:1
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1:1 PRBC: FFP Transfusion
Borne out of military rationale
Walking blood banks with Fresh Whole Blood
High FFP:RBC ratio (1:1) is independently associated with
◦ Improved survival to hospital discharge◦ Improved overall mortality
J Trauma 2007; 63:805 –813
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1:1 Transfusion works for civilians too!
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1:1 Platelets: PRBC is also important
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Take home point Re: 1:1:1
Improves 30 day survival
Reduces incidence of pneumonia, pulmonary failure, abdominal compartment syndrome
LOWER 24 hour transfusion requirement
Johnsson et al. Scand J Trauma, Resus, Emergency Med. 2012
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Hemostatic adjuncts
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Hemostatic Adjuncts Factor VIIa
Prothrombin Complex
Tranexamic Acid
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Factor VIIa
• CONTROL TRIAL – looked at Use of Factor VIIa in the management of refractory trauma hemorrhage
• Pro-thrombotic Agent • TRIAL did not show a significant mortality benefit
• Factor VII also has a variety of thromboembolic complications – increased significantly over controls
Johnsson et al. Scand J Trauma, Resus, Emergency Med. 2012
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Factor VIIa
Alarcon. UPMC Trauma Rounds Winter - 2012
X
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Prothrombin Complex (PCC)
Cocktail of 3 or 4 factors
Can be used to correct INR rapidly in trauma
Less thrombotic complications than Factor VIIa
Annals of Pharmacotherapy, 2011. July / August, Volume 45
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Administration of PCC to patients with massive bleeding
Found to reliably lower INR with a single dose No thrombotic complication May warrant a RCT
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Smaller studies
Promising results to reverse Coumadin related coagulopathy
Unanswered as to whether should be used with MTP
Matsushima et al. American J Surgery (2015) 209 413-17
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Use of PCC for Damage Control Resuscitation
?Low volume product which does not Low volume product which does not result in hemo-dilution result in hemo-dilution
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Tranexamic Acid Not a pro-coagulant
Prevents fibrinolyisis
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Patients randomized to receive TXA or Placebo 3 hours from injury
TXA found to reduce mortality from bleeding significantly (4.9% vs 5.7%).
The Lancet. Volume 376. July 3, 2010
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TXA in the USA Given more liberally in Europe
“… in most centers, [TXA] is given following individual practitioner decisions rather … protocol”
Dutton, Anesthesia 2015, 70 (Suppl 1), 108-111
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TXA take home point
Tranexamic Acid is an antifibrinolytic
Administration in cases of massive hemorrhage within the first 3 hours can have an effect on mortality
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Massive transfusion protocols
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“The Massive Transfusion Protocol (MTP) facilitates the replacement of massive blood loss with appropriate blood products in a timely fashion.”
J Trauma. 2006;60:S91–S96.
Other Authors.
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Massive Transfusion Protocols
Standardize replacement of platelets and clotting factors in optimum ration to PRBC
Increase speed and efficiency of transfusion
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Arch Surg. 2008; 143(7): 686-91
J Trauma. 2009;66:1616-1624
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Early activation
Direct notification of the blood bank
Achievement of pre-defined ratios
PI process
All help to improve outcome and survival
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MTP here at VCU “ACTIVATE MTP”
PLACE THE ORDER IN CERNER
Send 2 samples to the blood bank
Transfuse “Emergency Release Uncrossmatched Blood” if you have to
With each release it needs to be ordered again
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MTP at VCUProtocol 1 Keep Ahead Order 4 RBCKeep Ahead Order 4 FFPRelease 8 RBCRelease 6 FFP
Protocol 2Order 1 dose PlateletsOrder 1 dose CryoRelease 8 RBCRelease 8 FFPRelease 1 dose Platelets – (250 – 300cc)Release 1 dose CryoOptional Order Activated Factor VII
Protocol 3Release 4 RBCRelease 4 PlasmaOrder 1 dose PlateletsRelease 1 dose Platelets – (250 – 300cc)
Protocol 4Order 1 dose PlateletsOrder 1 dose CryoRelease 4 RBCRelease 4 FFPRelease 1 dose PlateletsRelease 1 dose Cryo
Protocol 5 Release 4 RBC Release 4 FFPOrder 1 dose PlateletsRelease 1 dose Platelets – (250 – 300cc)
Protocol 6Release 4 RBCRelease 4 FFPOrder 1 dose PlateletsRelease 1 dose Platelets – (250 – 300cc)
Protocol 7Order 1 dose PlateletsOrder 1 dose CryoRelease 4RBCRelease 4 FFPRelease 1 dose PlateletsRelease 1 dose Cryo
Protocol 8 Release 4 RBC Release 4 FFPOrder 1 dose PlateletsRelease 1 dose Platelets – (250 – 300cc)
Protocol 9 (Alert: MTP: Trauma has been completed. Refer back to normal Blood Product ordering pathway)
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Termination of MTP Nursing unit will notify TM to slow rate of preparation and delivery of blood products when bleeding slows to a specified rate.
When the protocol is cancelled, nursing unit will notify TM.
Keep Ahead orders for blood/ blood products can still be utilized for 24 hours from time of entry
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LABORATORY TESTING
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Intraoperative Targets Hemoglobin > 7
INR <2
Platelet Count > 50 K
Fibrinogen > 100
Guide Clot Strength with TEG
Kaafarani et al. Scandinavian Journal of Surgery 103:81-88, 2014
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Laboratory Guidance
PT / INR, PTT are warmed to 37C before analysis
This can normalize results and under diagnose coagulopathy
Tests can take 30 minutes to an hour
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TEG Provide clinically relevant information on clot strength
A Quantitative method of giving clot strength over time
Are run at patient temperatures
Takes 5 minutes
Can be used to run “ongoing resuscitation”
Johnsson et al. Scand J Trauma, Resus, Emergency Med. 2012
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TEG
Johnsson et al. Scand J Trauma, Resus, Emergency Med. 2012
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How about pressors to avoid fluid?
J Crit Care (2010) 25, 173
J Trauma (2011) 71: 565-572
J Trauma (2008) 64: 9-14
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Late Resuscitation in ICU
Hemostasis achieved in the OR
“A la carte resuscitation”
Volume Resuscitation Guided in ICU by◦ Clearance of Lactate◦ Volume Status Assessment (LTTE)
Generally Tolerate Hgb > 7
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In CONCLUSION Hemostatic Resuscitation Expedite hemorrhage control Limit crystalloid resuscitation to prevent dilutional coagulopathy USE BLOOD EARLY Transfuse PRBC:FFP:Plts in a 1:1:1 fashion Factor VII – bad TXA, PCC may have roles within a MTP MTP is a good thing TEG assays