Alteration in fibrinolytic capacity after operation

Area of Science:

• Physiology
• Vascular Biology
• Hemostasis

Background:

• Fibrinolytic capacity is crucial for preventing thrombosis.
• Venous occlusion stimulates the release of plasminogen activator from the endothelium.
• Postoperative changes in fibrinolysis can impact patient outcomes.

Purpose of the Study:

• To investigate the impact of major and minor surgery on the fibrinolytic response to venous occlusion.
• To assess postoperative changes in fibrinolytic capacity.

Main Methods:

• Forearm venous occlusion (20 minutes) was performed.
• Fibrinolytic activity was measured before and after occlusion.
• Patients undergoing major and minor operations were studied.

Main Results:

• Fibrinolytic capacity was significantly reduced on the first postoperative day after major operations.
• No significant reduction in fibrinolytic capacity was observed after minor operations.
• Spontaneous fibrinolytic activity was also reduced post-major operation.

Conclusions:

• Major surgery significantly impairs postoperative fibrinolytic capacity.
• The observed reduction may be due to endothelial exhaustion or defective synthesis/release of plasminogen activator.
• Minor surgery does not appear to significantly affect fibrinolytic capacity in the early postoperative period.