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More blood transfusions linked to better outcomes after major traumatic brain injury, suggests study

Dr. Kamal Kant KohliWritten by Dr. Kamal Kant Kohli Published On 2024-06-14T21:00:37+05:30  |  Updated On 14 Jun 2024 9:01 PM IST
More blood transfusions linked to better outcomes after major traumatic brain injury, suggests study
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Increased use of blood transfusions after major traumatic brain injury could help people hospitalized in intensive care units regain greater functional independence and a better quality of life.

Six months after a major traumatic brain injury (TBI), patients who benefited from this approach regained more functional independence and had a better quality of life than those subjected to a more restrictive approach, even though the combined incidence of death and major disability was not significantly different between the two treatment groups.

This is the conclusion of an international research team led by Alexis Turgeon, professor at Université Laval, Canada Research Chair in Neurological Critical Care and Trauma, critical care physician and researcher at CHU de Québec-Université Laval, whose work is published in the New England Journal of Medicine.

"This randomized clinical trial, initiated in 2017, was carried out in 34 hospital centres in Canada, the United Kingdom, France and Brazil. Its aim was to compare two blood transfusion strategies - one so-called restrictive and the other liberal - employed to care for people hospitalized in an intensive care unit following a TBI. These approaches differ in the degree of anemia, or the minimum hemoglobin concentration that must be present in patients' blood before a blood transfusion can be given," explains Professor Turgeon.

"The hemoglobin enables red blood cells to carry oxygen to the tissues and organs. Most patients hospitalized after a TBI suffer from anemia, defined as low hemoglobin concentration, which could reduce oxygen transport to the brain during a period when it is most vulnerable," points out François Lauzier, also a professor at Université Laval and who co-led the study with Professor Dean Fergusson of the Ottawa Hospital Research Institute.

The restrictive approach consists in tolerating a low hemoglobin level before giving a transfusion, while a liberal approach aims to maintain high hemoglobin levels, thus giving more blood transfusion.

"By improving oxygen transport to the brain during the acute phase of care, it may be possible to save more nerve cells in the days following a TBI, thereby preventing additional brain damage," says Professor Turgeon.

To conduct the study, the research team recruited 742 critically ill patients with moderate or severe TBI and anemia defined as a hemoglobin level of 10 g/decilitre or less during hospitalization. Randomly divided into two groups, these individuals were subjected to one or other of the transfusion strategies during their stay in the intensive care unit. To maintain these thresholds, the care teams administered blood transfusions whenever necessary.

Six months after TBI, the research team assessed the level of overall recovery for each group, including neurovegetative status, dependence on activities of daily living and impairments preventing resumption of activities that had been performed prior to TBI. "The combined incidence of death and major disability was not statistically different between the two groups, but seemed favouring the liberal strategy in all analyses," says Professor Turgeon. What's more, those treated using the liberal approach showed a higher functional independence measure and quality of life index than those treated using the restrictive approach.

"In light of the overall results of our study and considering the safety of current blood transfusions, the liberal strategy is probably the option that should be preferred in the acute phase of care to improve long-term prognosis following TBI," concludes Professor Turgeon.

Reference:

lexis F. Turgeon, Dean A. Fergusson, Lucy Clayton, Marie-Pier Patton, Xavier Neveu, Timothy S. Walsh, Annemarie Docherty, Liberal or Restrictive Transfusion Strategy in Patients with Traumatic Brain Injury, New England Journal of Medicine, DOI: 10.1056/NEJMoa2404360.

New England Journal of Medicinetraumatic brain injurydisability
Source : New England Journal of Medicine
Dr. Kamal Kant Kohli
Dr. Kamal Kant Kohli

Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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