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  • Title: [Ovarian pregnancy and intrauterine contraception].
    Author: Clausen IH.
    Journal: Ugeskr Laeger; 1987 Nov 02; 149(45):3045-6. PubMed ID: 3433505.
    Abstract:
    The records of 219 women who were diagnosed with extrauterine pregnancy (WHO class 631.09-631.99) at St. Joseph's Hospital, Esbjerg, Denmark in the period Jan 1973-Jan 1985 were retrospectively evaluated to verify the diagnosis and to determine the type of ectopic pregnancy. The diagnosis of pregnancy had to have been ascertained from histological examination and for primary ovarian pregnancy the description of the operation had to state that both tubes appeared normal. The admission history indicated whether the patient used IUD as contraception. 195 women yielded a population of 211 ectopic pregnancies. The median age was 28.9 years (17-42 years) and the average parity before ectopic pregnancy was 1.2 children/woman. 3 interstitial pregnancies (1.5%), 4 primary ovarian pregnancies (1.9%), 1 primary (.5%), and 1 secondary abdominal pregnancy were found. Of the 4 ovarian pregnancies 3 of the women used spiral IUDs, corresponding to 14.3% ovarian pregnancies among ectopic pregnancies in IUD users. Ovarian pregnancies among non-IUD users was .53%. The risk for ovarian pregnancy among IUD users when they become ectopically pregnant is 27 times greater than among women who do not use a spiral but who become ectopically pregnant. Statistical probability, chi sq. = 5.945, p.05. The reason for the increased incidence of ovarian pregnancy is probably that the IUD prevents intrauterine, and to some extent tubal, pregnancies but not ovarian pregnancies.
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