Thrombin generation after prothrombin complex concentrate or plasma transfusion during cardiac surgery

Area of Science:

• Cardiology
• Hematology
• Transfusion Medicine

Background:

• Reduced thrombin generation (TG) after cardiopulmonary bypass (CPB) in cardiac surgery contributes to coagulopathy and bleeding.
• Plasma or four-factor prothrombin complex concentrate (PCC) are used to treat bleeding, but their effects on TG restoration are not fully understood.

Purpose of the Study:

• To compare the efficacy of PCC versus plasma in restoring thrombin generation (TG) in adult patients undergoing cardiac surgery.
• To analyze the impact of PCC and plasma on clotting factor levels post-CPB.

Main Methods:

• Laboratory-based secondary analysis of a randomized, controlled trial.
• Assessed thrombin generation (TG) parameters and clotting factor levels at serial timepoints post-treatment.
• Compared PCC (15 IU/kg) versus plasma (10-15 ml/kg) in 99 adult cardiac surgery patients.

Main Results:

• PCC group showed significantly higher endogenous thrombin potential (ETP) and peak TG early after treatment compared to the plasma group.
• Both groups achieved similar TG values by postoperative day 1.
• PCC group had higher levels of proteins C, S, and Factors II, VII, IX, and X early post-treatment.

Conclusions:

• PCC administration more rapidly restores thrombin generation (TG) than plasma in the early postoperative period after cardiac surgery.
• PCC treatment did not show laboratory evidence of hypercoagulability.
• Findings support PCC as an effective option for managing coagulopathic bleeding after CPB.