Ramen H. Chmait, MD

Professor of Obstetrics & Gynecology (Clinical Scholar)

Director of Fetal Surgery Program

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Overview

Ramen Chmait, MD is Assistant Professor of Clinical Obstetrics and Gynecology, Pediatrics, and Surgery at the University of Southern California’s Keck School of Medicine. Dr. Chmait has served as director of Los Angeles Fetal Therapy since 2006. The Los Angeles Fetal Therapy is a program within the CHLA-USC Institute for Maternal-Fetal Health. In this capacity he has provided surgical treatment to hundreds of unborn children. Dr. Chmait also directs a research program devoted to understanding fetal disease and investigating potential treatment modalities.

Awards

  • 2011
     -: U.S. News Top Doctors, 2011
     – 2014
  • Fetal Hope: Light of Hope Award, 2008
  • UCSD Department of Reproductive Medicine: Fellows Teaching Award, 2003
  • Kaiser Permanente Los Angeles Medical Center: Resident Research Award, 2000

Research Funding

  • Pre-Clinical Development of a Fetal Micropacemaker
    NIH · R01HD075135 · Sep 30, 2012 – Aug 31, 2017 · Role: Principal Investigator

Publications

  • International Expert Consensus on the Diagnosis and Clinical Management of Primary Fetal Pleural Effusion. Prenat Diagn. 2026 Jul 14.. View in PubMed
  • Fetal Echocardiography and Hyperoxia Testing after Serial Amnioinfusions: Results from the RAFT Trial Bilateral Renal Agenesis Arm. Fetal Diagn Ther. 2026 Jul 13; 1.. View in PubMed
  • Neonatal Survival After Serial Amnioinfusions for Anhydramnios Due to Fetal Kidney Failure: The RAFT Clinical Trial. JAMA. 2026 Jul 01.. View in PubMed
  • The Solomon Technique and Extreme Preterm Birth after Laser Surgery for Twin-Twin Transfusion Syndrome. Fetal Diagn Ther. 2026 Jun 30; 1.. View in PubMed
  • Reply. Ultrasound Obstet Gynecol. 2026 Aug; 68(2):298-299.. View in PubMed
  • Technical Success of Fetal Aortic Valvuloplasty in Relation to Center Volumes: A Report From the International Fetal Cardiac Intervention Registry. Circ Cardiovasc Interv. 2026 Aug; 19(8):e015593.. View in PubMed
  • Prenatal diagnosis and management of monozygotic twins discordant for Turner syndrome – rare case of twin pathology. Ginekol Pol. 2026; 97(6):520-522.. View in PubMed
  • Sleep-related breathing disorders beyond infancy following open spina bifida repair. Eur J Pediatr. 2026 Jun 06; 185(7).. View in PubMed
  • Does the order of ablation of vein-to-vein placental connections during fetoscopic laser photocoagulation affect outcomes in twin-twin transfusion syndrome? Am J Obstet Gynecol. 2026 May 23. Chmait RH . View in PubMed
  • Mathematical reappraisal of the congenital cystic adenomatoid malformation volume ratio. J Matern Fetal Neonatal Med. 2026 Dec; 39(1):2654343.. View in PubMed