Edmunds was the son of Edward Reynolds, a solicitor, and his wife, Edna (née Jones).^[1] He was educated at St Paul's School, London, then qualified at St Thomas' Hospital in 1958, interrupting his course to study science with Henry Barcroft and Maureen Young.^[4]

Reynolds was a world championship fencer, winning a bronze in the team event in the 1955 World Fencing Championships.^[1]

In 1962, Reynolds travelled to the United States as a research fellow with Dav Cook visiting both the Boston Children's Hospital and Harvard Medical School. While there, they researched hyaline membrane disease. After a quick visit to Yale School of Medicine, Reynolds returned to the UK in 1964, taking an appointment at the Department of Paediatrics at University College Hospital in London, working under Professor Leonard B. Strang and to help him establish a unit to study the fetal and neonatal lung.^[5] This collaboration led to team which produced a series of remarkable reports on pathophysiology.^[4]

Starting in 1976, Reynolds was appointed to the Chair in Neonatal Paediatrics at the University of London, becoming Emeritus in 1996.^[5] He was also Head of the Department of Paediatrics at University College London and the Middlesex School of Medicine from 1987 to 1992.^[5]

He also served as president of the Neonatal Society.^[5]

Reynolds was one of the first pioneers in imagining to appraise brain injury in children suffering from Hypoxia. He researched the condition in both piglets and lambs, and this research led to formation of a team, that was able to build a device that captured the first human phosphorus nuclear magnetic resonance spectroscopy.^[6][1] This led to Reynolds most important discovery, that brain cells didn't die after injury, but instead there was a period where the physician could intervene to repair the injury. This research led to the discovery of therapeutic hypothermia, that cooled the brain to reduce damage, a treatment that is standard for babies with brain damage.^[1]

Awards and honours edit

His awards include the

• James Spence Medal,^[4][7]
• Dawson-Williams Memorial Prize,
• Harding Award
• Maternité Prize.^[5]

He was elected a Fellow of the Royal Society in 1993.^[8][9] Reynolds was appointed a CBE in 1995 and elected a Fellow of the Academy of Medical Sciences in 1998.^[1]

From 1978 to 1992 he was Specialist Adviser to a House of Commons Health Select Committee and its predecessors, contributing to four reports:^[5]

• House of Commons Social Services Committee, Session 1979 -1980 (1980). Perinatal and Neonatal Mortality. HMSO. ISBN 978-0102976809.{{cite book}}: CS1 maint: numeric names: authors list (link)
• House of Commons Social Services Committee, Session 1983 -1984 (1984). Perinatal and Neonatal Mortality: Follow-up. HMSO. ISBN 978-0102308846.{{cite book}}: CS1 maint: numeric names: authors list (link)
• House of Commons Social Services Committee, Session 1988 -1989 (1989). Perinatal, Neonatal and Infant Mortality. HMSO.{{cite book}}: CS1 maint: numeric names: authors list (link)
• House of Commons Social Services Committee, Session 1991 -1992 (1992). Maternity Services. HMSO.{{cite book}}: CS1 maint: numeric names: authors list (link)

The following papers were his most important.

• Wray, Susan; Cope, Mark; Delpy, David T.; John S, Wyatt; E. Osmund R., Reynolds (30 March 1988). "Characterization of the near infrared absorption spectra of cytochrome aa3 and haemoglobin for the non-invasive monitoring of cerebral oxygenation". Biochimica et Biophysica Acta (BBA) - Bioenergetics. 991 (1): 184–192. doi:10.1016/0005-2728(88)90069-2. PMID 2831976.
• Roth, Simon C.; Edwards, A. D; Cady, Ernest B.; Delpy, David T.; Wyatt, John S.; Azzopardi, Denis; Baudin, Jenny; Townsend, Jan; Ann L. Stewart, Ann L.; Reynolds, E. Osmund R. (April 1992). "Relation Between Cerebral Oxidative Metabolism Following Birth Asphyxia, and Neurodevelopmental Outcome and Brain Growth at One Year". Developmental Medicine & Child Neurology. 34 (4): 285–295. doi:10.1111/j.1469-8749.1992.tb11432.x. PMID 1572514. S2CID 6823414.

• Osmund Reynolds on the History of Modern Biomedicine Research Group website