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Changing clinical characteristics of infants treated for hypoxic ischaemic encephalopathy in England, Wales and Scotland: a population-based study using the National Neonatal Research Database

Background: Therapeutic hypothermia is standard of care for babies with moderate/severe hypoxic-ischaemic encephalopathy and is increasingly used for mild encephalopathy.

Objective: Describe temporal trends in the clinical condition of babies diagnosed with hypoxic-ischaemic encephalopathy who received therapeutic hypothermia.

Design: Retrospective cohort study using data held in the National Neonatal Research Database.

Setting National Health Service neonatal units in England, Wales and Scotland.

Patients Infants born from 1 January 2010 to 31 December 2017 with a recorded diagnosis of hypoxic-ischaemic encephalopathy who received therapeutic hypothermia for at least 3 days or died in this period.

Main outcomes Primary outcomes: recorded clinical characteristics including umbilical cord pH; Apgar score; newborn resuscitation; seizures and treatment on day 1. Secondary outcomes: recorded hypoxic-ischaemic encephalopathy grade.

Original content: Health Data Research Innovation Gateway