440-448
Placental Dysfunction Disorders After Prior Miscarriages In a Sample of Iraqi Womens
Authors: D.DalyaThamer Ahmad*

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Objective: The aim of this study was toinvestigate the
association between prior miscarriages and the risks of
placental dysfunction disorders, including
preeclampsia, stillbirth, birth of a small for gestational
age (SGA) infant, placental abruption, and spontaneous
preterm birth.
Study Design: In a population-based cohort study
including 72 primiparous women, we estimated risks of
placental dysfunction disorders for women with 1 (n =
24 ), 2 (n = 20 ) and 3 or more (n = 18 ) self-reported
prior miscarriages. Risks were calculated as odds ratios
by unconditional logistic regression analysis and
adjustments were made for maternal age, early
pregnancy body mass index, smoking habits, years of
formal education, in vitro fertilization, chronic
hypertension, pregestational diabetes, hypothyroidism,
systemic lupus erythematosis and fetal sex .
Results: Compared with women with no prior
miscarriage, women with 1 prior miscarriage had
almost no increased risks. Women with 2 prior
miscarriages had increased risks of spontaneous
preterm birth, preterm (<37 weeks) SGA infant, and
placental abruption. The rates of all disorders were
higher for women with 3 or more prior miscarriages
compared with women without prior miscarriages:
preeclampsia, 50% vs 30%; stillbirth, 22.22 % vs 0%,
SGA infant, 22.22 % vs 10 %, placental abruption, 27.78
% vs 10 %; and spontaneous preterm birth, 27.78 % vs
10 %. The adjusted odds ratios for preterm (<37
weeks) disorders in women with 3 prior miscarriages
were approximately 3.4, neonatal death, 11.11 % vs 0%.
Conclusion: History of 2 or more miscarriages is
associated with an increased risk of placental
dysfunction disorders and should be regarded as a risk
factor in antenatal care.