A study by Danish researcher Dr. Øjvind Lidegaard in 2012 with 1.6 million women found a 6.5 times increase in the likelihood of venous thromboembolism when compared to users of non-hormonal based birth control.
Deep vein thrombosis | Thrombosis | Sujiatun Thrombosis Hospital | Venous thrombosis | thrombosis | Lifeblood, the Thrombosis Charity | deep vein thrombosis | Cerebral venous sinus thrombosis | Central venous catheter |
A study in the BMJ, with over 1.6 million women, found that users of vaginal rings with ethinyl estradiol and etonogestrel have a 6.5 times increased risk of venous thrombosis compared to non-users.
Diagnostic techniques used include the patient's history and physical examination, venous imaging techniques and laboratory evaluation related to venous thromboembolism.