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Thrombosis in pregnancy 

Thrombosis in pregnancy
Thrombosis in pregnancy

I.A. Greer


November 30, 2011: This chapter has been re-evaluated and remains up-to-date. No changes have been necessary.

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date: 25 October 2021

Aetiology—features that predispose to venous thromboembolism include (1) pregnancy is a thrombophilic state; (2) there is relative venous stasis during pregnancy; and (3) some endothelial damage to the pelvic vessels occurs during delivery.

Epidemiology— venous thromboembolism complicates around 1 in 1000 pregnancies, with highest risk just after delivery. Deep venous thromboses usually occur on the left side, and a much higher proportion are ileofemoral than in patients who are not pregnant....

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