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Heparin-bonded circuits with a reduced anticoagulation protocol in primary CABG: a prospective, randomized study
G S Aldea1, M Doursounian, P O'Gara
1Department of Cardiothoracic Surgery, Boston University Medical Center, Massachusetts 02118-2393, USA.
The Annals of Thoracic Surgery
|August 1, 1996
Summary
Heparin-bonded cardiopulmonary bypass circuits (HBC) significantly reduce homologous transfusions and improve outcomes in coronary artery bypass grafting. This blood conservation strategy enhances patient recovery, shortening hospital and intensive care unit stays.
Area of Science:
- Cardiovascular Surgery
- Anesthesiology
- Hematology
Background:
- Many patients undergoing coronary revascularization need transfusions.
- A strategy to reduce perioperative blood loss was developed.
Purpose of the Study:
- To evaluate if heparin-bonded cardiopulmonary bypass circuits (HBC) improve blood conservation and clinical outcomes in primary coronary artery bypass grafting (CABG).
Main Methods:
- A prospective randomized trial compared 234 patients using HBC with lower anticoagulation versus conventional circuits with full anticoagulation.
- Activated clotting time was monitored (>280s for HBC, >480s for conventional).
Main Results:
- HBC group showed significantly less chest tube output (p=0.04) and fewer blood product transfusions (p=0.01).
- Patients with HBC had shorter ventilation duration (p=0.04), reduced SICU stay (p=0.01), and fewer hospital days (p=0.02).
- HBC use was not linked to adverse events.
Conclusions:
- HBC with a lower anticoagulation protocol safely reduces homologous transfusions in primary CABG.
- This approach effectively shortens ventilation, SICU, and hospital stays.