John M O'Brien

Dr. John M O'Brien is a Professor and Division Director of Maternal-Fetal Medicine at the University of Kentucky College of Medicine, with additional role as Co-Director of the OMNI Service Line. His academic career focuses on preterm birth prevention and fetal diagnosis of malformations, particularly through progesterone therapy in high-risk pregnancies.

• Board-certified in Obstetrics-Gynecology and Maternal-Fetal Medicine
• 2011-present: Director, Maternal-Fetal Medicine
• Previous: Director, Perinatal Diagnostic Center (Central Baptist Hospital, 16 years)

Research Trends: Analysis of 10 selected publications (2012-2025) reveals persistent focus on:

• Progesterone-based interventions for cervical shortening
• Meta-analyses of preterm birth prevention methods
• RAAS system dynamics in hypertensive pregnancies
• Chemerin expression in maternal smoking effects
• Individual patient data modeling for outcome prediction