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Blood transfusion is a critical medical procedure that saves lives and treats various medical conditions. It involves transferring blood from a donor to a recipient. This process requires a thorough understanding of the ABO blood group system and its associated antigens and antibodies.
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Microfluidic Flow Chambers Using Reconstituted Blood to Model Hemostasis and Platelet Transfusion In Vitro
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TEG-Directed Transfusion in Complex Cardiac Surgery: Impact on Blood Product Usage.

Kevin Fleming1, Roberta E Redfern2, Rebekah L March3

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|January 6, 2018
PubMed
Summary

Thromboelastography (TEG) significantly reduced blood product transfusions in complex cardiac surgery. This blood management strategy lowered perioperative use and the number of patients receiving transfusions, improving efficiency and potentially costs.

Keywords:
blood conservationcardiopulmonary bypasspoint-of-care testingthrombelastography

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Area of Science:

  • Cardiothoracic Surgery
  • Transfusion Medicine
  • Anesthesiology

Background:

  • Complex cardiac procedures frequently necessitate blood transfusions due to surgical bleeding or coagulopathy.
  • Effective transfusion management is critical for patient outcomes and resource utilization in cardiothoracic surgery.

Purpose of the Study:

  • To quantify the impact of implementing Thromboelastography (TEG) on perioperative and postoperative blood transfusion rates in complex cardiac surgery.
  • To evaluate the effectiveness of TEG-guided transfusion protocols in reducing blood product usage.

Main Methods:

  • Retrospective analysis of 681 patients undergoing complex cardiac surgery (pre- and post-TEG implementation).
  • Comparison of patient demographics and blood product utilization (red blood cells, plasma, cryoprecipitate, platelets) between the two periods.
  • Multivariate analysis using a generalized linear model to control for confounding factors and assess TEG's independent effect on transfusion rates.

Main Results:

  • Significant reductions observed in mean units of red blood cells, plasma, and cryoprecipitate (p < .0001) post-TEG implementation.
  • Overall blood product use decreased by approximately 40% in the perioperative period and throughout the entire hospital stay (p < .0001).
  • The proportion of patients receiving transfusions was significantly lower after TEG introduction (p < .01), with TEG use independently associated with reduced transfusion.

Conclusions:

  • TEG-guided transfusion management significantly reduces perioperative blood product administration in complex cardiac surgery.
  • While TEG impacts perioperative use, its effect on transfusion needs beyond 24 hours post-surgery was not significant.
  • Implementation of TEG leads to fewer patients exposed to allogeneic blood, positively impacting transfusion therapy and associated costs.