1 Thicker than Water Alisa McQueen MD, FAAP, FACEP Associate Professor of Pediatrics The University of Chicago
2 I have no relevant financial relationships to disclose.
3 Who is bleeding? How much and what kind of TXA volume? Can we medically slow down bleeding?
4 FAST examination How much and what kind of TXA volume? Can we medically slow down bleeding?
5 FAST examination Damage Control Resuscitation TXA Can we medically slow down bleeding?
6 FAST examination Damage Control Resuscitation TXA Transexamic Acid (TXA)
7 FAST examination How much and what kind of TXA volume? Can we medically slow down bleeding?
8 Is there blood in the abdomen? Unstable Stable DPL Invasive CT scan Radiation
9 FAST: Focused Assessment with Sonography in Trauma Adults: standard of care Kids?
10 FAST: Focused Assessment with Sonography in Trauma Adults: standard of care Kids: 10-15%
11 Why don t we do more pediatric FAST exams?
12 FAST in Pediatric Trauma All children < 16 with blunt abdominal trauma FAST/CT/procedures at the discretion of treatment team FAST compared with no FAST Calder B et al. Focused Assessment with Sonography for Trauma in children with blunt abdominal trauma: a multi-institutional analysis. J Trauma Acute Care Surg 2017;83:
13 FAST in Pediatric Trauma 2188 patients 37.9% FAST (more likely with MVC, less likely with falls or assault) Calder B et al. Focused Assessment with Sonography for Trauma in children with blunt abdominal trauma: a multi-institutional analysis. J Trauma Acute Care Surg 2017;83:
14 FAST in Pediatric Trauma 69 % had negative FAST Grade 3+ liver/spleen injury Intra-abdominal injury requiring intervention 56 % had negative FAST Calder B et al. Focused Assessment with Sonography for Trauma in children with blunt abdominal trauma: a multi-institutional analysis. J Trauma Acute Care Surg 2017;83:
15 FAST in Pediatric Trauma Trial Stable children with blunt torso trauma randomized standard treatment vs FAST Suspicion for intra abdominal injury before/after FAST CT at treating team discretion Holmes JF et al. Effect of Abdominal Ultrasound on Clinical Care, Outcomes, and Resource Use Among Children with Blunt Torso Trauma. A Randomized Clinical Trial. JAMA 2017;317:
16 975 children 465 No FAST 460 FAST 52 % CT 54 % CT No difference in CT rates No difference in missed injuries No difference in length of stay Holmes JF et al. Effect of Abdominal Ultrasound on Clinical Care, Outcomes, and Resource Use Among Children with Blunt Torso Trauma. A Randomized Clinical Trial. JAMA 2017;317:
17 FAST in Pediatric Trauma Sub-analysis of children with blunt abdominal trauma 20 PECARN EDs Menaker J et al. Use of the FAST examination and its impact on abdominal computed tomography use in hemodynamically stable children with blunt torso trauma. J Trauma Acute Care Surg. 2014;77(3):
18 FAST in Pediatric Trauma How suspicious are you for intraabdominal injury? Frequency of FAST Frequency of CT Missed intra abdominal injury Menaker J et al. Use of the FAST examination and its impact on abdominal computed tomography use in hemodynamically stable children with blunt torso trauma. J Trauma Acute Care Surg. 2014;77(3):
19 Very low (<1%) Low (1-5%) Moderate (6-10%) High (11-50%) Very high (>50%) 11 % 13 % 20 % 23 % 30 % Rate of FAST increased as the suspicion for intra - abdominal injury increased Menaker J et al. Use of the FAST examination and its impact on abdominal computed tomography use in hemodynamically stable children with blunt torso trauma. J Trauma Acute Care Surg. 2014;77(3):
20 Very low (<1%) Low (1-5%) Moderate (6-10%) High (11-50%) Very high (>50%) 11 % 13 % 20 % 23 % 30 % RR of CT decreased significantly for lowmoderate suspicion injuries R when FAST performed Menaker J et al. Use of the FAST examination and its impact on abdominal computed tomography use in hemodynamically stable children with blunt torso trauma. J Trauma Acute Care Surg. 2014;77(3):
21 When excluded site #1, effect of FAST on CT decreased Had to exclude because not enough FAST performed Menaker J et al. Use of the FAST examination and its impact on abdominal computed tomography use in hemodynamically stable children with blunt torso trauma. J Trauma Acute Care Surg. 2014;77(3):
22 Should we abandon FAST in kids?
23 Should we abandon FAST in kids? Unstable kids were not included CT obtained at discretion of the providers
24 Maybe we need to do it more Menaker J et al. Use of the FAST examination and its impact on abdominal computed tomography use in hemodynamically stable children with blunt torso trauma. J Trauma Acute Care Surg. 2014;77(3):
25 FAST examination Damage Control Resuscitation TXA Can we medically slow down bleeding?
27 Damage Control Resuscitation and Permissive TXA Hypotension
28 The Lethal Triad Hypothermia Acidosis Coagulopathy
29 Damage Control Resuscitation Permissive Hypotension Early blood products over saline
30 Retrospective study of adults with penetrating trauma and hypotension managed with damage control surgery and damage control resuscitation Standard fluid (150+ crystalloid) Restricted fluid (<150 ml crystalloid) Duke MD et al. Restrictive fluid resuscitation in combination with damage control resuscitation: time for adaptation. J Trauma Acute Care Surg 2012;73:
31 Standard fluid (avg 2757ml) Mortality in OR: 32% Mortality in ICU: 5% Overall mortality: 37% Restricted fluid (avg 129ml) Mortality in OR: 9% Mortality in ICU: 12% Overall mortality: 21% Duke MD et al. Restrictive fluid resuscitation in combination with damage control resuscitation: time for adaptation. J Trauma Acute Care Surg 2012;73:
32 Hydrostatic pressure may disrupt clots Dilution of coagulation factors worsens bleeding Inflammatory cascade contributes to organ failure
33 Blood volume varies by age. Infants: cc/kg Young children: cc/kg Adolescents: cc/kg
34 Children can lose up to 45% of their blood volume before becoming hypotensive.
35 Children with traumatic brain injury may be hypotensive.
36 Limit isotonic fluids and give blood early We don t know what the target blood pressure should be We don t know what the goals in pediatrics should be
37 FAST examination Damage Control Resuscitation TXA Transexamic Acid (TXA)
38 TXA vascular injury during surgery activates coagulation TXA Fibrinolysis and clot breakdown Decreases need for transfusion by 1/3
39 TXA vascular injury during surgery activates coagulation TXA Fibrinolysis and clot breakdown Could it work for trauma?
40 Effects of TXA on death, vascular occulsive events, and blood transfusion in trauma patients with significant hemorrhage (CRASH-2): a randomised, placebo-controlled trial. Lancet 2010;376:23-32.
41 CRASH-2 sick trauma patients SBP < 90 HR > 110 Risk for significant bleeding TXA Placebo Primary outcome: death within 4 weeks in hospital
42 274 hospitals 40 countries CRASH-2 20,211 trauma patients SBP < 90 HR > 110 Risk for significant bleeding TXA 10, % mortality from all causes Placebo 10,115 16% mortality from all causes
43 274 hospitals 40 countries CRASH-2 20,211 trauma patients SBP < 90 HR > 110 Risk for significant bleeding TXA 10, % mortality from bleeding Placebo 10, % mortality from bleeding
44 CRASH-2 sub-analysis 1. Time from injury (<1, 1-3, >3h) 2. Severity (SBP <75, 76-89, >89) 3. GCS (3-8, 9-12, 13-15) 4. Type of injury (penetrating/ blunt)
45 CRASH-2 sub-analysis The sooner TXA given, the 1. Time stronger from injury the benefit. (<1, 1-3, >3h) 2. Severity (SBP <75, 76-89, >89) 3. If GCS given (3-8, after 9-12, 3 hours, 13-15) 4. Type of increased injury (penetrating/ risk of blunt) thrombotic events.
46 What do we know about TXA in kids?
47 What do we know about TXA in kids? Coagulation cascade is the same by about age 1 year Safe use in elective surgery (cardiac, scoliosis, craniofacial)
48 TXA use in U.S. Children s Hospitals 36 hospitals TXA use in children < 18 years 64% cardiothoracic surgery 18% scoliosis 3.6% craniofacial 14% other 0.3% trauma Nishijima D et al. Tranexamic acid use in US childrens hospitals. J Emerg Med 2016;50:
49 Pediatric TXA in combat setting Retrospective review of TXA use in children < 18 with trauma in Afghanistan 766 children Mean age 11 88% male 73% penetrating injury Eckert MJ et al. TXA administration to pediatric trauma patients in a combat setting (PED- TRAX).J Trauma Acute Care Surg 2014;77:
50 Pediatric TXA in combat setting Retrospective review of TXA use in children < 18 with trauma in Afghanistan 9% received TXA Tended to be sicker When controlled for severity, decreased mortality (OR 0.3, p=0.03) Eckert MJ et al. TXA administration to pediatric trauma patients in a combat setting (PED- TRAX).J Trauma Acute Care Surg 2014;77:
52 Thicker than Water
53 FAST hasn t been very helpful so far in pediatric trauma. But we just might need to learn to do it better in kids.
54 Permissive hypotension in pediatric trauma is probably a bad idea. TXA But giving blood early is probably a good idea.
55 TXA is likely to help and unlikely to harm when given early to the TXA severely injured pediatric trauma patient.
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