An audit of the intraoperative usage of blood products in patients undergoing cardiac surgery on cardiopulmonary bypass
Date
2018
Authors
Phokontsi, Kenyaditswe Charity Petronella
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Abstract
Title: An audit of the intraoperative usage of blood products in patients
undergoing cardiac surgery on cardiopulmonary bypass.
Background: Transfusion of blood products is increasingly recognised as an
independent predictor of poor outcome after cardiac surgery. The study aims
to audit blood transfusion usage in a cardiothoracic unit, at a tertiary academic
centre.
Methods: A descriptive, retrospective, contextual audit. A consecutive
convenience sampling method was used. One hundred and twenty-two adult
patients who underwent their first elective cardiac surgery on cardiopulmonary
bypass were enrolled.
Results: The mean age of the population studied was 46.7 (16.2) years.
Patients were predominantly male (60.7%). The mean (SD) body mass index
was 21.4 (5.6) kg/m2. Their mean (SD) preoperative haemoglobin and platelet
count was 12.8 (2.3) g/dL and 274.4 (121.9) 109/L respectively. Following a
clear fluid prime cardiopulmonary bypass technique, with a median (IQR)
priming volume of 1500 (1000 - 2000) ml, the first mean (SD) haemoglobin on
cardiopulmonary bypass was 8.9 (1.6) g/dL. Overall, 110 (90.2%) patients
received donor blood products. Eighty-five (77.3%) patients received red
blood cells,103 (93.6%) fresh frozen plasma, and 35 (31.8%) platelet
transfusion. A total of 255 red blood cell, 225 fresh frozen plasma and 37
platelet units were transfused. The cell salvage technique was used in 94
(77.0%) patients. The median (IQR) volume of salvaged blood was 535 (250–
754) ml.
Conclusion: A high rate of homologous blood product transfusion was found
in patients undergoing cardiac surgery in the study.
Description
A research report submitted to the Faculty of Health Sciences, University of the Witwatersrand, in the fulfillment of the requirements for the degree of Masters of Medicine in the branch of Anaesthesiology, Johannesburg, 2018
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Citation
Phokontsi, Kenyaditswe Charity Petronella, (2018) An audit of the intraoperative usage of blood products in patients undergoing cardiac surgery on cardiopulmonary bypass, University of the Witwatersrand, Johannesburg, https://hdl.handle.net/10539/28908