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The report authors said:
The study, published on bmj.com, took data from 23,500 women who had IVF and 117,000 women with natural pregnancies and found that:
- 4.2 out of every 1,000 women who had IVF suffered blood clots
- compared with 2.5 of every 1,000 with natural pregnancies
- pulmonary embolism occurred in 8.1 women out of every 10,000 who have IVF
- compared with six out of 10,000 who get pregnant naturally
Women who undergo IVF have a higher risk of experiencing blood clots while they are pregnant, a new study has found.
Swedish researchers found that a higher ratio of women who got pregnant following in vitro fertilisation (IVF) suffered from venous thromboembolism (blood clots) than those who became pregnant naturally.
The risk of pulmonary embolism - a potentially fatal blood clot which can prevent blood from reaching the lungs - in women who had the fertility treatment increased almost seve-nfold during the first trimester of pregnancy, according to the research.