Pregnancy outcome in 396 pregnancies in patients with SLE in Saudi Arabia

A S Al Arfaj, N Khalil
Lupus 2010, 19 (14): 1665-73
The aim of this study was to examine the pregnancy outcomes in patients with systemic lupus erythematosus (SLE) and the effect of SLE flare and treatment on pregnancy outcomes. We performed a retrospective evaluation of all pregnancies occurring in patients with SLE during the 27-year period from 1980 to 2006. Of the 319 women with SLE planning pregnancy after SLE onset, 176 (55.2%) conceived resulting in 396 pregnancies. Live births were significantly lower in proportion (70.2% vs. 85.7%) and more likely to end in fetal deaths (29.7% vs. 14.2%) and preterm births (26.7% vs. 5.8 %) in pregnancies occurring after SLE onset than in pregnancies occurring before SLE onset (p < 0.0001). With respect to different disease manifestations, we found that fetal loss was significantly higher in patients with antiphospholipid (aPL) antibodies than without (p < 0.001). Preterm deliveries were significantly more frequent in patients with lupus nephritis, anti-Ro/SSA antibodies, hypertension, history of intravenous cyclophosphamide treatment and aPL than those without these features (p < 0.05). Neonates with intrauterine growth retardation (IUGR) neonates were more common in hypertensive and Raynaud's-positive pregnancies (p < 0.05). SLE flares occurred in 30.8% pregnancies. There was increased risk of fetal loss, preterm births and IUGR in pregnancies with SLE exacerbations than without (p < 0.05). Prednisolone was found to improve the rate of live births, although it was also a predictor of prematurity. The predictors of pregnancy loss were lupus nephritis (odds ratio (OR) 7.3), aPL (OR 3.9), and SLE flares in pregnancy (OR 1.9). There was higher risk of preterm deliveries in patients with lupus nephritis (OR 18.9), anti-Ro antibodies (OR 13.9), hypertension (OR 15.7) and SLE flares (OR 2.5). IUGR was found to be associated with hypertension (OR 37.7), Raynaud's (OR 12.3), and SLE flares (OR 4.2). In conclusion, pregnancies in SLE patients with active lupus nephritis, anti-Ro/SSA antibodies, aPL, hypertension, Raynaud's phenomenon, active disease at conception and SLE exacerbations are at a higher risk of adverse pregnancy outcomes. It is important to carefully plan pregnancy, and experienced rheumatologists and obstetricians should monitor SLE patients in pregnancy and postpartum.

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