Trauma Clinical Trial
— FiiRSTOfficial title:
Fibrinogen in the Initial Resuscitation of Severe Trauma (FiiRST): a Randomized Feasibility Trial
Verified date | April 2016 |
Source | Sunnybrook Health Sciences Centre |
Contact | n/a |
Is FDA regulated | No |
Health authority | Health Canada: CTA Control Number 174493 |
Study type | Interventional |
Trauma is the leading cause of death in people 44 years of age or younger. After major
trauma, such as following high-speed motor vehicle collision, bleeding coupled with clotting
defects is responsible for most of deaths in the first hours of hospital admission. Of note,
these bleeding-related deaths are potentially preventable. Accordingly, the initial
in-hospital management of severely injured patients focuses on stopping bleeding, replacing
blood loss and correcting clotting defects.
Recently, animal and human research demonstrated that one of the major clotting defects
following injury and bleeding is the drop in blood levels of fibrinogen (a clotting factor),
which is detected on hospital admission in severely injured patients. These low fibrinogen
levels are associated with increased blood transfusion and death. However, in North America,
the standard of care for replacing low fibrinogen requires the use of cryoprecipitate, which
is a frozen blood product with long preparation time, and similarly to other blood products,
carries the risk of viral transmission and transfusion complications. Alternately, many
Europeans countries where cryoprecipitate has been withdrawn from the market due to safety
concerns, use fibrinogen concentrate. Fibrinogen concentrate undergoes pathogen
inactivation, which is a process to eliminate the risk of transmitting viruses, bacteria and
parasites, is likely a safer and faster alternative to cryoprecipitate. In Canada,
fibrinogen concentrate is licensed for congenital low fibrinogen only.
Although preliminary data suggest that fibrinogen supplementation in trauma is associated
with reduced bleeding, blood transfusion, and death, the feasibility, safety and efficacy of
early fibrinogen replacement remains unknown. We proposed to conduct a feasibility
randomized trial to evaluate the use of early fibrinogen concentrate against placebo in
injured patients at our trauma centre.
A pilot trial is necessary to demonstrate the feasibility of rapidly preparing, delivering,
and infusing fibrinogen concentrate as an early therapy to prevent excessive bleeding in
trauma. This feasibility trial will provide preliminary safety and clinical outcome data to
inform the design of larger trials; which ultimately aims to prevent bleeding-related deaths
in the trauma population.
Status | Completed |
Enrollment | 50 |
Est. completion date | December 2015 |
Est. primary completion date | December 2015 |
Accepts healthy volunteers | No |
Gender | Both |
Age group | 18 Years and older |
Eligibility |
Inclusion Criteria: 1. Injured trauma (penetrating or blunt) patients who are at risk of significant bleeding, defined as: i. Systolic blood pressure (SBP) = 100mmHg at any time from the injury scene until 30min after hospital admission AND ii. Red blood cell transfusion has been ordered by the trauma team leader (or delegate) Exclusion Criteria: 1. Patients in shock which the etiology is purely not related to bleeding: i. Cardiogenic (myocardial or valvular dysfunction); ii. Distributive (septic, anaphylactic, acute adrenal insufficiency and neurogenic) and iii. Obstructive (cardiac tamponade, tension pneumothorax and massive pulmonary emboli). 2. Severe head injury, defined as any of the following: i. Glasgow coma scale (GCS) of 3 due to severe traumatic brain injury (TBI); ii. TBI with clear indication of immediate neurosurgical intervention based on clinical findings (mechanism of trauma associated with focal signs such as anisocoria with fixed pupil) or on CT results (bleeding causing mass effect); iii. Unsalvageable head injury such as through-through gunshot wound to the head, open skull fracture with exposure/loss of brain tissue; as per the trauma team or neurosurgery initial clinical assessment or as per initial CT of the head findings; 3. Known complete or incomplete spinal cord injury; 4. Known hereditary or acquired coagulopathies unrelated to the trauma resuscitation (e.g. known hepatic dysfunction); 5. Use of anticoagulant medications such as warfarin, low-molecular weight heparin, and direct thrombin and factor Xa inhibitors; 6. Moribund with evidence of unsalvageable injuries and withdrawal of care, as per the trauma team; 7. Received blood products prior to admission; 8. Patients with estimated body weight under 50Kg; 9. Patients with known or suspected pregnancy; 10. Patients arriving more than 6hr after injury. |
Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment
Country | Name | City | State |
---|---|---|---|
Canada | Sunnybrook Health Sciences Centre | Toronto | Ontario |
Lead Sponsor | Collaborator |
---|---|
Sunnybrook Health Sciences Centre |
Canada,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Other | Clinical Parameters | Rates of symptomatic thromboembolic complications in both study arms defined by the evidence of any of the following any time during hospital stay: deep venous thrombosis; myocardium infarction; cerebral vascular accident; pulmonary embolism; and arterial thrombosis Rates of asymptomatic deep venous thrombosis by leg doppler at day 7 of hospital stay Mortality by exsanguination All-cause mortality at 28 days (mainly due to exsanguination; mainly neurological/ due to traumatic brain injury/ withdrawal of care; or mainly due to multiple organ failure/sepsis) Incidence of acute lung injury/ acute respiratory distress syndrome before day 28 Multiple organ failure Total amount of crystalloids used in 24h Units of blood and blood products transfused in 24h of hospitalization |
one year | Yes |
Primary | Feasibility | 1.Feasibility endpoint: 1.1Proportion of patients receiving study intervention (Fibrinogen Concentrate [FC] or placebo) within first hour of hospital admission. Based on the trial's sample size of 50 patients, feasibility is defined by 85% (96% confidence interval (CI) [72% - 98%]) of study participants receiving the study intervention within the first hour of hospital admission | One year | No |
Secondary | Other feasibility endpoints and physiologic endpoints | Other feasibility endpoints:1.2.Proportion of patients receiving study intervention prior to any blood transfusion; 1.3.Times to randomization, issue, and start of infusion; 1.4.Duration of infusion; 1.5.Wastage of study intervention; 1.6.Proportion of patients with blood tests performed for all time points; 1.7.Proportion of missed patients (eligible but not randomized); 1.8.Randomization errors. Physiologic endpoints: Plasma fibrinogen levels; Rotational Thromboelastometry/ Thromboelastography parameters (functional fibrinogen, fibtem, fibtem plus); plasmin anti-plasmin complex; tissue plasminogen activator; plasminogen activator inhibitor-1; d-dimer levels; international normalized ratio [INR]; partial thromboplastin time; complete blood count; endogenous thrombin potential; factor XIII; factor V; and activated protein C will be obtained on admission; and +1h, +3h, +11h, +23h & +47h following start time of study infusion |
one year | No |
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