Differences in coagulation among Asians and Caucasians and the implication for reconstructive microsurgery

Area of Science:

• Reconstructive Surgery
• Vascular Surgery
• Hematology

Background:

• Muscle-sparing perforator flaps are increasingly used in microvascular reconstructive surgery.
• Clinical observations suggest potential ethnic variations in coagulation profiles.
• Understanding these differences is vital for microvascular surgeons.

Purpose of the Study:

• To test the hypothesis that Asian patients have a less thrombogenic coagulation profile than Caucasian patients.
• To investigate ethnic differences in coagulation and their implications for surgical patient care.

Main Methods:

• Retrospective review of clinical data and literature.
• Analysis of incidence rates for venous thromboembolism and pulmonary embolism across ethnic groups.
• Review of thromboelastography and factor/serum level comparisons between Asian and Caucasian patients.

Main Results:

• Lower incidence of venous thromboembolism and pulmonary embolism reported in Asian populations compared to North Americans.
• Thromboelastography revealed distinct hemostatic mechanisms in Asian versus Caucasian patients undergoing surgery.
• Asians demonstrated lower postoperative factor levels and the least thrombogenic baseline profiles compared to other ethnic groups.

Conclusions:

• Significant ethnic differences exist in baseline deep vein thrombosis and pulmonary embolism rates between Asians and Caucasians.
• Distinct hemostatic responses to surgery and baseline clotting factor levels are observed between these ethnic groups.
• Further research into ethnic coagulation profiles may enhance pre-, intra-, and postoperative care for free flap patients.