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Transcript of Kyle F. Dickson, M.D. M.B.A. Professor Baylor College of Medicine Southwest Orthopaedic Group,...
![Page 1: Kyle F. Dickson, M.D. M.B.A. Professor Baylor College of Medicine Southwest Orthopaedic Group, Houston, Texas.](https://reader036.fdocuments.net/reader036/viewer/2022062511/55143433550346dd488b6136/html5/thumbnails/1.jpg)
Kyle F. Dickson, M.D. M.B.A.
Professor Baylor College of MedicineSouthwest Orthopaedic Group, Houston, Texas
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Timing of Fracture Fixation in the
Polytrauma Patient
Kyle Dickson MD, MBAProfessor Baylor College of Medicine
Southwest Orthopaedic Group, Houston, Texas
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>5000 trauma admits with >1800 patients with ISS>15 (#1 ACS)
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Lecture Goals• Keep someone alive that would be
dead without you• Prioritize treatment to prevent killing
someone• Treat extremity injuries to return the
patient to a functional life
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Topic OutlineWhat do we know?
The benefits of resuscitation
The vast majority of patients benefit from early definitive long bone stabilization
IM nailing of long bones has systemic effects
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Topic OutlineOccasional patients are hurt by
long bone nailing
There is a systemic inflammatory response to major trauma
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Topic OutlineWhat is unknown?
How to predict bad consequences of long bone nailing
The optimal timing of fracture repair for all patients
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Topic Outline
The benefits of temporary external fixationThe effect of a head injury
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JA• 21 yo in MVA• Bilateral femur fractures, open tibia• L unstable pelvis, R T-type with pw• R rib fractures with a hemothorax• Splenic and liver laceration• SBP 88, HR 136, intubated
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JA
• BD = 6 meq/l• Temp = 33°
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Primary survey
A. Airway maintenance with cervical spine protection
B. Breathing and ventilation
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C.Circulation with hemorrhage control
D.Disability: Neurologic status
E. Exposure/environment control: undress patient but prevent hypothemia
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Morshed JBJS 2009• Relative risk of mortality treatment weighted analysis
• Delay > 12 hours for femoral shaft stabilization ↓ mortality 50% (especially serious abdominal injury)
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Problems• Fixing femur fractures may have nothing to do with mortality – but delay in fixation may be sicker patients – selection bias
• Significant ↓ in mortality12-24h, 48-120h and > 120 h - ? Not 24-48 h
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Our Study• Previous mortality of bilateral femur fractures 50% recently 25.9% (11.7% for unilateral femur fracture)
• 6.7% (102/1519) mortality unilateral
• 20.0% (15/75) mortality bilateral
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Our Study cont.• Multivariate logistic regression not significant for femur fractures
• Highly significant for age group, pedestrian accident, and ISS group
• ?fixed when stabilized and temporary ex fix
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Coagulopathy
• Hypothermia• Ca2 (blood citrate)• Acidotic
Lethal Triad – hemorrhage, coagulopathy, inflamatory/metabolic
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Coagulopathy & Trauma
By the time of arrival at the ED, 28% (2,994 of 10,790) of trauma patients had a detectable coagulopathy that was associated with poor outcome (MacLeod et al., 2003)
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INR vs Mortality 1st 24 hrs in STICU
Early ICU INR vsProbability of Death
0
0.2
0.4
0.6
0.8
1
1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7
INR
pro
ba
bilit
y
p=0.02
P = 0.02, ROC = 0.71
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Hemostatic Resuscitation
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Blood/FFP/Cryo/Plts 1:1 ratio
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The benefits of resuscitation
Uncompensated shock gross signs of circulatory deficiency (BP, HR, UO)
Compensated shock ongoing suboptimal tissue perfusionThe heart and brain are protected while
the perfusion of other organs is inadequate
Resuscitation - tissue acidosis eliminated and aerobic metabolism restored
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Emergent Extremity Issues Neuro vascular exam
Splint extremities
Compartment syndrome and dysvascular limbs
Major dislocations
Basic wound management
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Retrospective data from the 1980’sEarly fracture fixation is good!
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Bone and Johnson JBJS 1989
Parkland hospital – 178 patients with femur fractures randomized to before 24 hours or after 48 hours
Patients with ISS > 18 less pulmonary complications (ARDS, FE,
pneumonia) Severely injured patients benefit the most!!
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Why does early fracture stabilization help the lungs??
Reduce continued marrow emboliReduce pain and narcotic requirements
Eliminates traction and supine positioning
Less atelectasis and decreased pulmonary venous shunting
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Primary IM femur fixation in MTP with associated lung contusion –
a cause of ARDSPape et al JT 1993
106 pts with femur fracture and ISS > 18
In patients with chest trauma nailing within 24 hours led to greater ARDS (33% vs 7.7%) and mortality (21% vs 4%)
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The vast majority of patients benefit from early definitive long bone
stabilizationRetrospective studiesProspective Bone and Johnson 1989Early femoral fixation leads to:
Less complications Less ICU Less cost Better outcome for the limb
There is no debate!!
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IM nailing of long bones has systemic effects
Robinson et al JBJS b 2001 Trans esophageal echo and invasive monitoring during IM nailing
Increase in PA pressure Decrease in arterial oxygen partial pressure
Systemic change in markers of coagulation
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Systemic Effects of NailingBrundage et al JT 2002
1362 patients over 12 yearsFemur fixation < 24 hours - improved outcome
even with severe chest and head injuries“Resuscitation and hemodynamic normalization
are essential parts of our protocol”Only 65% of patients were physiologically ready
within 24HHighest incidence of ARDS in group fixed
between 2 and 5 days - a time of heightened inflammatory response?
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There is a systemic inflammatory response to
major traumaInjury activates cell defense mechanisms,
producing mediators of coagulation and inflammationProtect against infectionRemove damaged tissueInitiate repair
However severe inflammation my lead to organ injury
Good!!
Bad!!
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The pro inflammatory response is increased by primary IM nailing
Pape et al JT 2003Prospective study - 35 patientsThe systemic inflammatory response
measured by IL-6 was increased (55pg/ml-254pg/ml) by immediate IM nailing but not by ex fx and secondary nailing
No difference in clinical outcomes
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1st hit (trauma)
FES
SIRS
2nd hit (Surgery, infection, more FES)
ARDS
MODS
MOF
MSOF
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Occasional patients are hurt by long bone nailing
Robinson et al JBJS b 2001
8/84 patients develop post op pulmonary compromise (7 were prophylactic for metastatic disease)
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Can we detect a patient at risk??
Injury factors - High ISS, pulmonary injury, severe abdominal injury, bilateral femur or other multiple long bone injuries
Physiologic factors – Slow difficult resuscitation, high transfusion requirement, prolonged surgical time, hypothermia, coagulopathy
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Can we detect a patient at risk??
Genetic and biochemical markers – Currently not practical or reliable
IL-6 (> 800 pg/ml) - most studied and best correlates with outcome but ….
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The optimal timing of fracture repair for all patients
• Is it within 48 hours or greater than five days?
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“TOO SICK NOT TO FIX FRACTURES”
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Damage Control Surgery
• PhilosophyStay out rather than get out of trouble
• Restore normal physiology at the expense of normal anatomy
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Damage Control
Bilateral femoral ex fix, tibial ex fix and I&D at the bedside
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DCO external fixation-Stabilizes orthopedic injuries while
physiology improves-Avoid a “second hit” by major
orthopedic procedures-Fracture stability without
increased inflammatory response
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The benefits of temporary external fixation
DCO - Retrospective cohort studies (Pape et al J Trauma 2002)
-Significant reduction in systemic complications
-No increase in local complications
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Damage Control Orthopaedics
• Prevent 2nd hit (MOF, MSOF, SIRS, ARDs)
• Hgb < 8• Base Deficit > 5 mEq/l• Body temperature < 33º• INR > 1.5 (2.0 – 50% mortality)
Fix the femurs and the tibia within 48 hours (lung)
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Ventilation 9.5 11.0 15.7 0.04
L > 6hrs
Group S Group M Group L p
ICU stay 13.2 10.9 18.5 n.s.
Hosp. stay 35.5 28.6 44.6 n.s.
Death: MOF 36.4 31.8 46.6 0.04
German Trauma Registry
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Timing• Within 24-48 hours injuries most
mobile• 2-5 days may be worst time to
operate• Soft tissue good (includes lung)• Positive fluid balance
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Exchange to an IM rod safe?
Bhandari et al JOT 2005 -Pooled data from level 4 studies -Average infection rate 3.6%
Pin drainage
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The effect of a head injury-Severity of the head injury is the greatest predictor of outcome
-ICP monitoring – Keep ICP below 20
-Systemic BP control – avoid hypotension
-Put the two together! - CPP should be > than 70 mm hg (mean arterial minus ICP)
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Head injury and fracture fixation
-No clear evidence that timing/type of fracture fixation is an important predictor of outcome
-Assume full neurologic recovery will occur
-Who is doing your anesthesia and judging resuscitation?
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JA
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JA
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JA
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JA
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JA
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JA
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Damage Control Orthopaedics• Prevent 2nd hit (MOF, MSOF, SIRS,
ARDs)• Hgb < 8• Base Deficit > 5 mEq/l
(pH<7.2,lactate>2)• Body temperature < 33º• INR > 1.5
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Timing• Within 24-48 hours injuries most
mobile• 3-5 days may be worst time to
operate• Soft tissue good (includes lung)
(plafond – 28 days)• Positive fluid balance
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Thank You