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Hemostasis in aortic and cardiothoracic surgery
L Shore-Lesserson1, D L Reich, G Silvay
1Mount Sinai Medical Center, New York, New York, USA.
Journal of Cardiac Surgery
|March 1, 1997
Summary
Cardiovascular surgery patients often experience bleeding due to hemostasis abnormalities. Combining blood conservation strategies is crucial to mitigate risks and costs associated with transfusions.
Area of Science:
- Cardiovascular Surgery
- Hematology
- Anesthesiology
Background:
- Hemostasis abnormalities are a significant cause of morbidity and mortality in cardiovascular and aortic surgery.
- Frequent blood product transfusions increase patient risks and healthcare costs.
- Surgical procedures necessitate careful preparation to preserve hemostatic mechanisms.
Purpose of the Study:
- To highlight the challenges of hemostasis in complex cardiovascular and aortic surgeries.
- To discuss the mechanisms leading to bleeding complications.
- To suggest the need for combined blood conservation strategies.
Main Methods:
- Review of mechanisms causing hemorrhagic diathesis during extracorporeal circulation.
- Analysis of factors contributing to platelet and coagulation factor depletion.
- Identification of fibrinolysis triggers in aortic intimal disease.
Main Results:
- Extracorporeal circuits induce hemorrhagic diathesis via multiple mechanisms.
- Dilution from extracorporeal circuit prime depletes platelets and coagulation factors.
- Aortic intimal disease activates fibrinolysis through tissue plasminogen activator release.
Conclusions:
- Multiple etiologies contribute to bleeding in cardiovascular and aortic surgery.
- A combination of blood conservation strategies is recommended.
- Optimal intervention strategies are patient, physician, and institution-dependent.