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Thrombelastographic changes in OPCAB surgical patients.
R L Quigley1, D W Fried, R Salenger
1Division of Cardiothoracic Surgery, Albert Einstein Medical Center, Jefferson Health System, Philadelphia, Pennsylvania 19141, USA. quigleyr@einstein.edu
Perfusion
|September 24, 2002
Summary
Thrombelastography detected hypercoagulability in off-pump coronary artery bypass (OPCAB) patients 72 hours post-surgery. Cardiopulmonary bypass (CPB) patients showed a transient decrease in hypercoagulability.
Area of Science:
- Cardiovascular Surgery
- Hemostasis and Thrombosis
- Medical Diagnostics
Background:
- Off-pump coronary artery bypass (OPCAB) surgery is a common procedure.
- Assessing hypercoagulability post-cardiac surgery is crucial for patient outcomes.
- Thrombelastography (TE) is a viscoelastic assay used to evaluate hemostasis.
Purpose of the Study:
- To investigate the utility of thrombelastography in detecting hypercoagulability in OPCAB patients.
- To compare hypercoagulability states between OPCAB and cardiopulmonary bypass (CPB) patients.
Main Methods:
- Seventeen OPCAB and six CPB patients were enrolled.
- Thrombelastography was performed pre-procedure and on the first three postoperative days (POD).
- Coagulation Index (CI) was analyzed to assess hypercoagulability.
Main Results:
- OPCAB patients exhibited a small postprocedure CI reduction, followed by a significant increase by POD 3, indicating relative hypercoagulability.
- CPB patients showed a significant postprocedure CI decrease, returning to baseline levels within 72 hours.
- The mean CI in OPCAB patients exceeded preprocedure levels by 2.32 units at 72 hours post-surgery.
Conclusions:
- Thrombelastography can identify a state of relative hypercoagulability in OPCAB patients 72 hours after surgery.
- The findings suggest potential differences in hemostatic responses between OPCAB and CPB procedures.
- Further research is needed to elucidate the mechanisms and clinical significance of this post-OPCAB hypercoagulability.