Comparison of Aprotinin and Tranexamic Acid in Routine Cardiac Surgery
Bleeding and Cardiac Surgery
Allogeneic Blood Transfusion
Aortic Valve Replacement
Coronary Artery Bypass Graft Surgery
Drug: aprotinin or tranexamic acid
|Study Design:||Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Primary Purpose: Prevention
|Official Title:||The Influence of High-Dose Aprotinin and Tranexamic Acid on Bleeding Tendency and Allogeneic Blood Transfusion in Patients Undergoing Primary Aortic Valve Replacement or Coronary Artery Revascularization|
- 24 hours postoperative drainage blood loss
- incidence of allogeneic blood transfusion
- activation of fibrinolysis and hemostasis
- impairment of renal function
|Study Start Date:||January 2005|
|Estimated Study Completion Date:||July 2006|
Excessive bleeding during and after cardiac surgery is a serious complication. It exposes patients to the risk of allogeneic blood transfusion or other blood products and the risk of mediastinal re-exploration.Antifibrinolytic drugs like aprotinin and tranexamic acid are proven to reduce bleeding tendency and transfusion requirement in cardiac surgery. The efficacy of these drugs is proven, especially for the unspecific proteinase inhibitor aprotinin, however, there are concerns about the safety and the high costs of this drug. There are only limited head-to-head comparisons of these two drugs.
In this double-blind, prospective, controlled study the efficacy of aprotinin and tranexamic acid is compared. Primary outcome is the 24 hours postoperative drainage blood loss and the percentage of patients requiring allogeneic blood transfusion during the hospital stay. Subgroups of patients undergoing CABG surgery or aortic valve replacement are predefined for combined and separate data analysis.The power of the study is calculated for this subgroup-analysis.
Secondary outcome measurements are molecular marker of activation of hemostasis up to the 5th postoperative day.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00396760
|German Heart Center Munich|
|Munich, Germany, 80636|
|Principal Investigator:||Wulf Dietrich, MD, PhD||Department of Anesthesiology, German Heart Center Munich|