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Transfusion requirements in 811 patients during and after cardiac surgery: a prospective observational study
Hanne B Ravn1, Christian Lindskov, Lars Folkersen
1Department of Anaesthesia and Intensive Care, Aarhus University Hospital, Aarhus, Denmark. hbr@ki.au.dk
Insights
Identifying patients at risk for blood product transfusion after cardiac surgery is crucial. Specific factors like procedure type and prior surgery increase risk, necessitating tailored interventions for better patient outcomes.
Area of Science:
- Cardiovascular Surgery
- Transfusion Medicine
- Anesthesiology
Background:
- Blood product transfusion is common in adult cardiac surgery.
- Identifying patients at risk for transfusion is essential for optimizing perioperative management.
- Variability in transfusion needs highlights the need for individualized patient care.
Purpose of the Study:
- To identify patients at risk for intra- and postoperative blood product transfusion.
- To analyze pre- and perioperative risk factors associated with transfusion in cardiac surgery patients.
Main Methods:
- Prospective, observational study at a single university hospital.
- Included 811 adult patients undergoing cardiac surgery.
- Assessed transfusion of red blood cells (RBCs), fresh frozen plasma (FFP), and platelets within 24 hours post-surgery.
Main Results:
- A small percentage of patients (<12%) received the majority of RBCs and FFP (>70%).
- Surgical procedure type, prior cardiac surgery, and emergency operations were significant predictors of transfusion.
- Antithrombotic therapy was not a significant risk factor overall, but increased transfusion risk in low-risk procedures like coronary artery bypass graft surgery.
Conclusions:
- Identifying high-risk patients is key to managing bleeding complications.
- Individualized, risk-profile-based interventions are more effective than general strategies for improving patient outcomes.
Objective:
To identify patients at risk for intra- and postoperative blood product transfusion in a mixed adult cardiac surgical patient population.
Design:
A prospective, observational study.
Setting:
A single-center university hospital.
Participants:
Patients (n = 811) undergoing cardiac surgery from January 1, 2008, to November 30, 2008.
Interventions:
The outcome in terms of transfusion of red blood cells (RBCs), fresh frozen plasma (FFP), and/or pooled platelets within the first 24 hours after surgery was studied. Pre- and perioperative risk factors for bleeding and transfusion of blood products were studied.
Measurements And Main Results:
The majority of RBCs and FFP (>70%) were given to a minority of patients (<12%). The type of surgical procedure, previous cardiac surgery, and emergency operations were all significantly associated with the transfusion of RBCs, FFP, and platelets. Antithrombotic therapy was not significantly associated with the transfusion requirement in the mixed group of cardiac patients. However, in the low-risk procedures such as coronary artery bypass graft surgery, ongoing antithrombotic therapy at the time of the operation significantly increased the risk of transfusion in this otherwise low-risk category of surgery.
Conclusions:
The identification of high-risk patients is necessary to optimize the perioperative management of bleeding complications. Because of the high variability in transfusion requirements, a specifically tailored patient intervention based on the individual's risk profile appears more likely to improve patient outcome compared with general interventions given to the entire patient group.
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