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Age of Blood in Brain Injury

This study has been completed.
Information provided by:
University of British Columbia Identifier:
First received: August 30, 2005
Last updated: September 2, 2008
Last verified: September 2008

Donated red blood cells vary in how old they are, that is, how long they have been stored since being collected from donors. Blood that has been donated is stored for a maximum of 42 days, after this time it is expired. That means that red blood cells that are given to patients as a blood transfusion can be anywhere from a few days old to 42 days old. The average age of blood that is given as a blood transfusion in this hospital is 21 days old.

As stored blood gets older its ability to carry oxygen may be reduced. Whether or not this is important in patients with a brain injury is not currently known.

The purpose of this study is to try and determine if fresh blood (less than 5 days old) is better than old blood (greater than 20 days old) in improving the supply of oxygen in patients who have suffered an injury to their brain.

Condition Intervention
Traumatic Brain Injury
Procedure: Blood Transfusion

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Investigator)
Primary Purpose: Treatment
Official Title: A Prospective Randomized Controlled Trial Comparing the Effects of Fresh vs. Old Blood on Cerebral Oxygen Extraction in Patients With Traumatic Brain Injuries

Resource links provided by NLM:

Further study details as provided by University of British Columbia:

Primary Outcome Measures:
  • To evaluate the effect of transfusing "fresh" (blood stored less than 5 days) versus "stored" (blood stored for greater than 20 days) packed red blood cells (pRBC) on cerebral oxygen extraction ratio for 24 hours post transfusion [ Time Frame: 20 days ]

Secondary Outcome Measures:
  • To evaluate the effect of transfusion of pRBC on cerebral oxygen extraction in patients with traumatic brain injury for 24 hours post transfusion. [ Time Frame: 24 hours ]

Estimated Enrollment: 60
Study Start Date: March 2005
Study Completion Date: December 2007
Primary Completion Date: December 2007 (Final data collection date for primary outcome measure)
Intervention Details:
    Procedure: Blood Transfusion
    This is a single centre randomized trial in severely head injured patients requiring a blood transfusion. Randomization will be by computer generated random numbers paced in sealed envelopes. Patients would be randomized to receive either blood less than 5 days old or greater than 20 days old. The decision to transfuse and all other intensive care management will be unaltered by enrolment in the study.
  Show Detailed Description


Ages Eligible for Study:   16 Years and older   (Child, Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Patients with primary traumatic brain injury
  2. Glasgow Coma Scale < 8
  3. Invasive neurological monitoring:

    1. External Ventricular Drain
    2. Jugular bulb catheter
  4. Hemoglobin < 100 g/L and decision has been made by Attending Physician to treat with one unit pRBC

Exclusion Criteria:

  1. Age < 16
  2. Ongoing need for blood products
  3. Received Packed Red Blood Cells within preceding 24 hours
  4. Multiple trauma necessitating ongoing resuscitation
  5. Pregnant patients
  6. Chronic renal failure
  7. Severe sepsis or septic shock
  8. Adult respiratory distress syndrome or acute lung injury
  9. Presumed unstable neurological status during course of study
  10. Lack of informed consent
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00141674

Canada, British Columbia
Vancouver General Hospital
Vancouver, British Columbia, Canada, V5Z 1M9
Sponsors and Collaborators
University of British Columbia
Principal Investigator: Dean Chittock, MD University of British Columbia
  More Information

Responsible Party: Dr. Dean Chittock, University of British Columbia Identifier: NCT00141674     History of Changes
Other Study ID Numbers: C04-0459
VCHRI #V04-0261
Study First Received: August 30, 2005
Last Updated: September 2, 2008

Keywords provided by University of British Columbia:
Blood transfusion
Age of blood
Traumatic Brain Injury
Cerebral Oxygen Extraction Ratio
Age of transfused blood in traumatic brain injury

Additional relevant MeSH terms:
Wounds and Injuries
Brain Injuries
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Craniocerebral Trauma
Trauma, Nervous System processed this record on April 25, 2017