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Acta Reumatol Port. 2009 Jul-Sep;34(3):492-7.

Primary antiphospholipid syndrome: pregnancy outcome in a portuguese population.

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Recurrent miscarriage Clinic, Department of Maternal and Fetal Medicine, Maternidade Dr. Alfredo da Costa.



Women with antiphospholipid syndrome (APS) may suffer from recurrent miscarriage, fetal death, fetal growth restriction (FGR), pre-eclampsia, placental abruption, premature delivery and thrombosis. Treatment with aspirin and low molecular weight heparin (LMWH) combined with close maternal-fetal surveillance can change these outcomes.


To assess maternal and perinatal outcome in a cohort of Portuguese women with primary APS.


A retrospective analysis of 51 women with primary APS followed in our institution (January 1994 to December 2007). Forty one (80.4%) had past pregnancy morbidity and 35.3% (n=18) suffered previous thrombotic events. In their past they had a total of 116 pregnancies of which only 13.79 % resulted in live births. Forty four patients had positive anticardiolipin antibodies and 33 lupus anticoagulant. All women received treatment with low dose aspirin and LMWH.


There were a total of 67 gestations (66 single and one multiple). The live birth rate was 85.1% (57/67) with 10 pregnancy failures: seven in the first and second trimesters, one late fetal death and two medical terminations of pregnancy (one APS related). Mean (+/- SD) birth weight was 2837 +/- 812 g and mean gestational age 37 +/- 3.3 weeks. There were nine cases of FGR and 13 hypertensive complications (4 HELLP syndromes). 54.4% of the patients delivered by caesarean section.


In our cohort, early treatment with aspirin and LMWH combined with close maternal--fetal surveillance was associated with a very high chance of a live newborn.

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