Proton pump inhibitors use and risk of preeclampsia

Preeclampsia is one of the common complications of pregnancy and is characterized by high blood pressure. Proton pump inhibitors (PPIs) are commonly used for the management of gastroesophageal reflux disease among pregnant women. Recently, multiple epidemiological studies suggested the association between PPIs use and the risk of preeclampsia. This study aims to review the evidence and meta-analyse the pooled risk of preeclampsia in PPI users from epidemiological studies. Databases- MEDLINE, Embase, Scopus, Web of Science Core Collection, Emcare, and CINAHL (EBSCO) as well as sources of grey literature, ProQuest Dissertations & Theses Global, ClinicalTrials.gov and WHO International Clinical Trials Registry Platform will be searched to identify the epidemiological studies assessing the association between PPIs use and the risk of preeclampsia. Study selection, data extraction, and quality assessment will be performed by two independent authors. The risk of bias among included studies will be evaluated by using the Newcastle-Ottawa scale. The pooled effect of PPIs use on the risk of preeclampsia in pregnant women is the primary outcome of interest. Meta-analysis will be performed using Review Manager version 5.4.