➡️ There are ~ 5.8 million trauma deaths per year globally
➡️ Trauma is the largest cause of death below the age of 50
➡️ One-third of severely injured trauma patients are coagulopathic at hospital arrival
➡️ Fibrinogen is often used, but is it effective?
a short 🧵
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➡️ Trauma-induced coagulopathy is due to inflammation & shock
➡️ It is worsened by hypothermia, acidosis, and hemodilution
➡️ Coagulopathy due to hemorrhage is strongly associated with mortality
➡️ 1/3 of early trauma deaths are due to uncontrolled haemorrhage
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➡️ Fibrinogen is depleted early during major bleeding
➡️ It can be replaced with fresh frozen plasma, cryoprecipitate or fibrinogen concentrate
➡️ Cryoprecipitate includes fibrinogen, factor VIII coagulant, von Willebrand factor, fibronectin & factor XIII
3/10
➡️ Despite physiological rationale for fibrinogen in traumatic haemorrhage, an evidence gap exists
➡️ Observational data are promising, but subject to confounding
➡️ RCTs of cryoprecipitate are feasibility orientated
➡️ Fibrinogen concentrate studies have been disappointing
4/10
➡️ Despite this, the latest 2023 European trauma haemorrhage guidelines recommends its use for
🔴 initial haemostatic support
🔴 major bleeding accompanied by hypofibrinogenemia
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➡️ Could fibrinogen supplementation divert focus from other more effective therapies?
➡️ Is it a cost effective practice?
➡️ What is its role in the management of the severely injured trauma patient?
6/10
🚩 Enter the CRYOSTAT-2 trial
➡️ Randomised & controlled
➡️ Early cryoprecipitate in severe traumatic haemorrhage
➡️ 3 pools (15 units – 6g fibrinogen) of cryoprecipitate
➡️ 1568 adult trauma patients
➡️ Powered for a 7% 28 day mortality difference (26% to 19%)
7/10
➡️ Join us in @TitanicBelfast to hear @karimbrohi present the results of the @CRYOSTAT_2 trial at #CCR23
➡️ Will we be using cryoprecipitate routinely for all patients with major traumatic haemorrhage?
➡️ Antimicrobial therapy has been used for millennia
➡️ Treating severe infections can be lifesaving
➡️ However, the widespread use of antimicrobials also has downsides
A 🧵
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➡️ Throughout history, honey, herbs & metals were often used
➡️ One of the earliest known antimicrobial therapies was the topical use of mouldy bread
➡️ This intervention has been recorded in many ancient civilisations, including Egypt, China, Serbia, Greece & Rome
2/16
➡️ Mercury was used for epidemic diseases since the 1300s & especially syphilis
➡️ However, the treatment could be worse than the disease, with mercury poisoning possible
➡️ Treatment could last years, leading to the saying “A night with Venus, a lifetime with mercury”"
➡️ Throughout history, the most mystical substance of all has been blood
➡️ It has been coveted and desired
➡️ Fought for and defended
➡️ Stolen, yet freely given
A 🧵
1/16
➡️ Blood has always been a symbol of power
➡️ In Greek mythology, ichor, the blood of the Gods, was a golden fluid
➡️ It was immortal, pure, & untainted by human weaknesses
➡️ The Gods derived their divine powers & longevity from it
2/16
➡️ Blood has been revered for its restorative properties
➡️ Elizabeth Báthory, a 16th-century Hungarian noblewoman, allegedly killed hundreds of young girls & women
➡️ She bathed in their blood to maintain her youth & beauty
➡️ Death has always fascinated human civilisations
➡️ Not just the ending of a life, but either preparation for the afterlife or attempts to restore an existing life
A 🧵
1/28
➡️ Ancient Egyptians preserved corpses via mummification for an afterlife
➡️ They removed internal organs, used embalming fluids, linen bandages, & intricate coffins
➡️ The wealthy had pyramids
➡️ Relatives, staff & pets were buried alive for the journey to the afterlife
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➡️ In Greek Mythology, the River Styx separated the worlds of the living & dead
➡️ Charon, the Ferryman, required payment from the deceased for passage
➡️ The dead were buried with a coin
➡️ Those unable to pay were left to wander the river bank for 100 years
➡️It's widely used for treatment & prevention of haemorrhage
➡️It's in the WHO's List of Essential Medicines & recommended in the European Traumatic Haemorrhage guideline (2023)
➡️But is it as efficacious as we think?
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🚩 History
➡️Drs. Utako & Shosuke Okamoto invented TXA in 1962
➡️They identified that the amino acid lysine inhibited the degradation of plasmin, a profibrinolytic enzyme
➡️Lysine was modified to first produce Epsilon- Amino-Caproic Acid and later TXA, x 27 more potent
2/17
🚩 Pharmacology
➡️TXA is a molecular analog of lysine
➡️It inhibits fibrinolysis by preventing the binding of plasminogen to fibrin
➡️This inhibits plasmin formation & displaces plasminogen from the fibrin surface
➡️It also has effects on the immune system & inflammation
➡️ REBOA is an exciting "new" therapy for non-compressible torso haemorrhage
➡️ It's used across the world, but without robust evidence
➡️ Does it work? Is it beneficial?
➡️ A thread...
2/13
🚩 Uncontrollable haemorrhage accounts for
➡️ > 80% of combat deaths
➡️ ~ 40% of civilian trauma-related deaths
🚩 Many have been determined to be preventable deaths
🚩 ~ 67% of fatal bleeding occurs in the torso region
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Emergency thoracotomy (ET) has a long history in resuscitation
🚩 1880 - Paul Niehans first documented ET in human cardiac arrest
🚩 1901 - Kristian Ingelsrud performed the first successful resuscitation
🚩 1953 - Stephenson had 28% survival in 1200 cardiac arrests