Pilot Interventional Study Comparing Fetomaternal Outcomes of 150 mg Versus 75 mg Aspirin Starting Between 11 and 14 Weeks of Pregnancy in Patients with High Risk of Preeclampsia: A Randomized Control Trial.

INTRODUCTION: Hypertensive disorders of pregnancies complicate around 5-10% of pregnancies worldwide, and together they are a member of the deadly triad along with haemorrhage and infection that contribute to a significant amount of maternal morbidity and mortality. AIMS AND
OBJECTIVES: To compare differences in the fetomaternal outcomes with the use of 150 mg aspirin versus 75 mg aspirin in pregnant women found to be at high risk of PE.
METHODOLOGY: This was a two-armed double-blind parallel randomized control trial conducted in the Department of Obstetrics and Gynaecology, King George's Medical University, carried over a period of 1 year.
RESULTS: Preeclampsia occurred in 15 of 87 participants (17%) in the 75 mg aspirin group compared with 6 of 91 (6.5%) in the 150 mg aspirin group. There were a significantly higher incidence of PE, its severity and lesser period of gestation at delivery in the group given 75 mg dose compared to the group given 150 mg dose. There were significantly higher values of mean arterial pressure and uterine artery PI in women who developed preeclampsia compared to those who do not in both the groups. Foetal outcomes were observed in both the groups of women, and there was no statistically significant difference between them.
CONCLUSION: This randomized trial showed that among women with singleton pregnancies who were identified by means of first-trimester screening as being at high risk of preterm preeclampsia, use of aspirin 150 mg per day started between 11 and 14 weeks till 36 weeks is a potent intervention to reduce the development of both early- and late-onset preeclampsia as compared to a dose of 75 mg per day. © Federation of Obstetric & Gynecological Societies of India 2019.