Application of goal-directed therapy for the use of concentrated antithrombin for heparin resistance during cardiac surgery.

Application of goal-directed therapy for the use of concentrated antithrombin for heparin resistance during cardiac surgery. Perfusion. 2020 Jun 13;:267659120926089 Authors: Stammers AH, Francis SG, Miller R, Nostro A, Tesdahl EA, Mongero LB Abstract The maintenance of anticoagulation in adult patients undergoing cardiopulmonary bypass is dependent upon a number of factors, including heparin concentration and adequate antithrombin activity. Inadequate anticoagulation increases the risk of thrombosis and jeopardizes both vascular and extracorporeal circuit integrity. The purpose of this study was to evaluate a goal-directed approach for the use of antithrombin in patients who were resistant to heparin. Following institutional review board approval, data were obtained from quality improvement records. A goal-directed protocol for antithrombin was established based upon heparin dosing (400 IU kg-1 body weight) and achieving an activated clotting time of ⩾500 seconds prior to cardiopulmonary bypass. Two groups of patients were identified as those receiving antithrombin and those not receiving antithrombin. Outcome measures included activated clotting time values and transfusion rates. Consecutive patients (n = 140) were included in the study with 10 (7.1%) in the antithrombin group. The average antithrombin dose was 1,029.0 ± 164.5 IU and all patients had restoration to the activated clotting time levels. Patients in the a...
Source: Perfusion - Category: Cardiovascular & Thoracic Surgery Authors: Tags: Perfusion Source Type: research