IRCT20190826044619N1 IRCT 2020-02-04 Iran University of Medical Sciences Comparison of Aspirin dose in prevention of preeclampsia and maternal fetal complications Comparison of Aspirin dose (80 and 160 mg) in prevention of preeclampsia and maternal fetal complications 2018-03-21 anticipated 80 Complete https://irct.ir/trial/41726 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Samples will be divided into study groups based on random allocation rule (each group of 40) . Forty sample will be selected randomly by lottery method from the entire sample, and assigned to the 80 mg aspirin group and the remaining sample assigned to the 160 mg aspirin group. 1-2 Preeclampsia. Intervention 1: Intervention group: Pregnant women who will take aspirin 160 mg.The 80 mg Aspirin by the Jalinus Pharmaceutical Company will be used orally 2 times a day from the time of study until the end of the 36th week of pregnancy. Intervention 2: control group: Pregnant women who will take aspirin 80 mg.The 80 mg Aspirin by the Jalinus Pharmaceutical Company will be used orally once a day from the time of study until the end of the 36th week of pregnancy. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is No more information