Background & Objectives: Hypertension is the most common medical problem in pregnancy, with  an incidence rate of 6-8%. The patients with preeclampsia are exposed to more maternal and fetal  complications. This requires more intensive prenatal cares. The diagnosis in early stages of disease has an important role in decreasing maternal and neonatal mortality and its comsequent complications. This study was an attempt to determine the epidemiological factors and complications of preeclampsia among patients admitted to Alavi hospital, Ardabil.

Methods: This descriptive retrospective study was conducted on 176 women with preeclampsia. The data were collected using a questionnaire and medical records of patients. These data were analyzed using descriptive and inferential statistics.

Results: 75% of the patients had severe preeclampsia and 25% had mild preedampsia. Regarding the predisposing factors, history of preeclampsia was observed in 23.1% of the cases, mother's underlying diseases in 12.5%, twin in 2.3% and hydramnios in 4%. The method of delivery in 62.5% of the cases was cesarean section. 67.6% of preeclamptic patients had maternal and fetal complications (10.2% Maternal and 57.4% fetal). The maternal complications were: abruptio placenta, (44.4%), eclampsia (22.2%) and coma (11.1%). The fetal complications were: IUGR (42.4%), prematurity (39.6%) and  IUFD (9%).

Conclusion: In this study the incidence of severe preeclampsia was higher, which may be due to insufficient prenatal cares and delay in diagnosis. Further studies about the effect of prenatal cares on pregnancy outcomes in preeclamtic women are recommended.