Epidural anesthesia can protect fibrinolytic function after surgery

Area of Science:

• Anesthesiology
• Surgical Stress Response
• Hemostasis and Thrombosis

Background:

• Surgical stress can significantly impact physiological functions, including coagulation and fibrinolysis.
• Different anesthesia techniques may differentially affect the body's stress response and hemostatic balance.

Purpose of the Study:

• To investigate the influence of continuous epidural anesthesia versus general anesthesia on stress response, coagulation, and fibrinolytic function in patients undergoing hysterectomy.

Main Methods:

• Thirty patients were randomized into three groups: continuous epidural anesthesia (Group E), combined epidural and general anesthesia (Group G+E), and general anesthesia (Group G).
• Blood samples were collected pre-anesthesia, end of operation, and 24 and 72 hours postoperatively.
• Levels of catecholamines, fibrinogen, thrombin-antithrombin III complex (TAT), D-dimer, tissue-type plasminogen activator (t-PA), and plasminogen activator inhibitor-1 (PAI-1) were analyzed.

Main Results:

• General anesthesia (Group G) significantly elevated nonepinephrine levels, while epidural techniques (Group E, G+E) did not.
• Fibrinogen and TAT levels were higher postoperatively in Group G+E and G compared to Group E.
• Epidural anesthesia (Group E) maintained better fibrinolytic function, with higher t-PA and lower PAI-1 levels compared to general anesthesia.

Conclusions:

• Continuous epidural anesthesia mitigates surgical stress and preserves fibrinolytic function.
• Epidural anesthesia demonstrates significant thromboprophylactic effects, superior to general anesthesia alone.
• These findings suggest epidural anesthesia is beneficial for managing hemostatic balance post-surgery.