Blondon et al identified risk factors for venous thromboembolism in a woman who has had a delivery. This was based on a meta-analysis of reported studies. The authors are from Geneva University Hospitals, University of Wisconsin and University of Washington in Seattle.
Patient selection: status post delivery
The odds ratio for a venous thromboembolism is 3.7 after cesarean section compared to vaginal delivery.
Frequency of venous thromboembolism: 0.3%
Additional risk factors:
(1) emergency Cesarean section
(2) longer and better follow-up
(3) failure to provide thromboprophylaxis
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