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Recombinant activated factor VII in cardiac surgery
1Cardiothoracic Intensive Care Unit, Southampton University Hospital, UK. mike.hrebertson@suht.swest.nhs.uk
Insights
This study investigates recombinant activated factor VII (rFVIIa) to reduce blood product use in high-risk cardiac surgery patients. Further trials are needed to confirm its efficacy and safety in reducing transfusion needs.
Area of Science:
- Cardiovascular Surgery
- Hematology
- Anesthesiology
Background:
- Adult cardiac surgery involves 1-1.25 million procedures annually, with significant costs, including blood product usage.
- Key hemostatic challenges include impaired platelet function, platelet consumption, coagulation protein dilution, and fibrinolysis.
- Recombinant activated factor VII (rFVIIa) shows anecdotal promise, necessitating rigorous clinical trials.
Purpose of the Study:
- To evaluate the efficacy and safety of rFVIIa in reducing blood and blood product utilization in adult cardiac surgery patients at high risk for hemorrhage.
- To assess secondary outcomes such as blood loss, ICU and hospital length of stay, and survival rates.
Main Methods:
- A prospective, randomized, placebo-controlled trial was conducted in adult cardiac surgery patients.
- rFVIIa or a placebo was administered post-cardiopulmonary bypass and after protamine administration.
- Primary endpoints focused on the use of blood and blood products; secondary endpoints included clinical outcomes.
Main Results:
- Data on the primary and secondary endpoints are being collected and analyzed.
- The study aims to provide evidence regarding the potential benefits and risks of rFVIIa in this patient population.
Conclusions:
- The study is expected to yield crucial information on the efficacy and safety profile of rFVIIa in managing hemostasis during high-risk cardiac surgery.
- Findings will inform clinical practice regarding the use of rFVIIa to mitigate bleeding complications and reduce transfusion requirements.
Abstract:
Adult cardiac surgery has an incidence of 1-1.25 million procedures per year. Overall costs are in the range of 50 billion US dollars per year and are increasing. Included in these costs is an increasing burden from the use of blood and blood products. The central haemostatic problems associated with cardiac surgery are impaired platelet function associated with pre-operative medication and cardiopulmonary bypass, consumption of platelets, dilution of coagulation proteins and triggering of fibrinolysis. Anecdotal data suggest that recombinant activated factor VII (rFVIIa) has a possible role in cardiac surgery, but randomized, controlled trials are required to confirm this potential. We have undertaken a prospective, randomized, placebo-controlled trial in adult cardiac surgery with a high risk of serious haemorrhage. Drug (rFVIIa) or placebo is given after cardiopulmonary bypass and following the administration of protamine. The primary endpoints of the study are use of blood and blood products. Secondary endpoints are blood loss, length of stay in the intensive care unit and in the hospital, and survival. This study will give us further information on the potential efficacy and safety of rFVIIa in cardiac surgery.
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