Johan Agren is a neonatologist and Medical Director of Neonatal Intensive Care at the University Children's Hospital in Uppsala, Sweden, and an Associate Professor of Pediatrics at Uppsala University. He serves as a Steering Committee member of the Tiny Baby Collaborative (of which Uppsala is one of the founders) and leads the Neurology section of the Swedish Neonatal Society. With decades of experience in caring for extremely preterm infants and their families his research is focused on optimizing care of infants born at the very lowest gestations, with particular interest in fluid balance management, and neurocritical care.

Research focus
Optimization of neonatal intensive care aiming to minimize central nervous system harm. Main ongoing projects are related to extreme prematurity, and asphyxia/HIE/hypothermia treatment.

Invited speaker 2021-2025

2021
“Management of infants born at 22 and 23 weeks of gestation”, Reason Neonatal Conference, UK (virtual)

“Management of infants born at 22-24 weeks of gestation”, European Congress of Perinatal Medicine, Lisbon, Portugal (virtual)

2022
“Fluid and electrolyte management at the lowest gestations”, Madison WI (virtual)

“Management of 22 week infants”, Denver CO (virtual)

“Improving outcomes at the lowest gestations”, Ipokrates Conference, Munich Germany

“Fluids and electrolytes at 22-24 weeks of gestation”, Ipokrates Conference, Munich Germany

“The Swedish approach towards extremely preterm infants”, Japan NRN Meeting (virtual)

2023
“Fluid management of extremely preterm infants born at 22-24 weeks of gestation”, Neonatal Grand Rounds (virtual), Calgary/Western Canada

“Management of infants born at the limit of viability”, Nagano Neonatal Society Conference, Nagano-Matsumoto, Japan

“Family-centered care of extremely preterm infants”, Kyorin University Lecture, Tokyo, Japan

“Fluid management of extremely preterm infants born at 22-24 weeks of gestation”, Neonatal Grand Lectures (virtual), Sydney/NSW, Australia

“Fluid management of extremely preterm infants born at 22-24 weeks of gestation”, Tiny Baby Collaborative Webinar (virtual), Columbus, OH

“Management of Mother-Infant dyads born at at 22-24 weeks of gestation – A Swedish Center’s experience”, Joint European Neonatal Societies Meeting, Rome, Italy

2024
“Tiny baby math-the supralinear implications of infants born at 22-23 weeks gestation”, PAS-meeting, Toronto, Canada

“Proactive care of infants born at 22-24 weeks”, Helsinki Children’s Hospital, Finland

“The DOs and DON’Ts of fluid management at <24 weeks”, Japan-Taiwan-Korea Neonatology Conference, Matsumoto, Japan

“Setting up a small baby unit”, Swedish Neonatal Quality Register Annual Meeting, Arlanda, Sweden.

“Management of extremely preterm infants in Japan”, Tokyo, Japan (Discussant).

2025
“Proactive care of extremely preterm infants. First - do no harm!”, Cyprus Society of Perinatal Medicine Meeting, Limassol, Cyprus.

“Details in management of infants born at 22-24 weeks of gestation”, McGill Neonatal Rounds, Montreal, Canada.

“Fluid and electrolyte management at 22-23 weeks”, McGill Neonatal Rounds, Montreal, Canada.

“Management of infants born at less than 24 weeks – A Swedish Perspective”, McGill Pediatric Grand Rounds, Montreal, Canada.

“Aspects of Parenteral Nutrition, and Skin Care in Infants born at 22-23 weeks” (Panel Discussant), Tiny Baby Collaborative Meeting @PAS, Honolulu HI.