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Changes in Cerebral Oxygenation during Transfusion Therapy.

Mumin Hakim1, Dmitry Tumin1, David P Martin2

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The Journal of Extra-Corporeal Technology
|December 21, 2016
PubMed
Summary

Blood transfusions during spinal surgery modestly increased cerebral and tissue oxygenation. However, the clinical significance of this improvement was limited due to high initial oxygenation levels in patients receiving autologous or allogeneic blood.

Keywords:
blood avoidanceblood transfusioncell savercerebral oxygenationnear-infrared spectroscopy

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Area of Science:

  • Anesthesiology
  • Neurosurgery
  • Transfusion Medicine

Background:

  • Packed red blood cell transfusions aim to enhance oxygen delivery.
  • Limited data exist on tissue oxygenation changes during blood administration.
  • Monitoring tissue and cerebral oxygenation during spinal surgery is crucial.

Purpose of the Study:

  • To evaluate the impact of autologous or allogeneic blood transfusion on cerebral and tissue oxygenation during spinal surgery.
  • To compare the effects of cell saver (autologous) versus allogeneic blood transfusion.
  • To assess if baseline hemoglobin levels influence oxygenation changes post-transfusion.

Main Methods:

  • Near-infrared spectroscopy was used to monitor tissue and cerebral oxygenation in pediatric patients undergoing spinal surgery.
  • Patients received either autologous (cell saver) or allogeneic blood as needed.
  • Oxygenation levels were recorded before, during, and after blood transfusion.

Main Results:

  • Tissue oxygenation increased significantly from 83 ± 9 to 86 ± 7 (p = .002) post-transfusion.
  • Cerebral oxygenation increased significantly from 76 ± 8 to 84 ± 8 (p < .001) post-transfusion.
  • No significant differences in oxygenation changes were observed between autologous and allogeneic blood, or based on initial hemoglobin levels (<8 g/dL vs. ≥8 g/dL).

Conclusions:

  • Blood transfusion, both autologous and allogeneic, led to a statistically significant increase in cerebral and tissue oxygenation during spinal surgery.
  • The clinical relevance of these oxygenation improvements may be limited due to high baseline values.
  • No differential effect was noted between autologous and allogeneic blood transfusion strategies.