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Updated: Apr 18, 2026

Author Spotlight: Enhancing Coronary Artery Revascularization
Published on: September 15, 2023
Coronary artery bypass grafting in 2 thrombophilic patients with protein s deficiency
Yen-Michael S Hsu1, George J Despotis
1From the Department of Pathology and Immunology, Washington University in St. Louis School of Medicine, St. Louis, Missouri.
Insights
This report details two coronary revascularization cases in patients with coronary artery disease and protein S deficiency. Fresh frozen plasma normalized protein S levels, preventing thrombotic complications without antifibrinolytics.
Area of Science:
- Cardiology
- Hematology
Background:
- Coronary artery disease (CAD) poses significant risks.
- Protein S deficiency is a hypercoagulable condition impacting surgical outcomes.
- Managing anticoagulation in CAD patients with protein S deficiency is complex.
Purpose of the Study:
- To review two cases of coronary revascularization in patients with protein S deficiency.
- To evaluate the efficacy of fresh frozen plasma in normalizing protein S levels preoperatively.
- To assess the safety and outcomes of avoiding intraoperative antifibrinolytic treatment.
Main Methods:
- Case report review of two patients undergoing coronary revascularization.
- Use of fresh frozen plasma as cardiopulmonary bypass priming fluid to address protein S deficiency.
- Monitoring for perioperative bleeding and thrombotic complications.
Main Results:
- Fresh frozen plasma effectively normalized protein S levels prior to extracorporeal circulation.
- Neither patient experienced perioperative thrombotic complications.
- Absence of intraoperative antifibrinolytic treatment was well-tolerated.
Conclusions:
- Fresh frozen plasma is a viable strategy for managing protein S deficiency during coronary revascularization.
- Coronary revascularization can be safely performed in patients with protein S deficiency.
- Avoiding antifibrinolytics may be feasible in select cases, balancing bleeding and thrombosis risks.
Abstract:
In this report, we review 2 cases of coronary revascularization in patients with a diagnosis of coronary artery disease and preoperative protein S deficiency, an established hypercoagulable condition. In an attempt to normalize protein S levels, fresh frozen plasma was used as the priming fluid for the cardiopulmonary bypass circuit before the initiation of extracorporeal circulation. On the basis of a low risk of bleeding and the theoretical risk of thrombosis, neither patient received intraoperative antifibrinolytic treatment nor did they develop perioperative thrombotic complications.
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