Revisting definition of bronchopulmonwry dysplaisa

Primary objective To determine which definition of BPD has better predictability for severe respiratory morbidity at 20-50 month corrected age. Study design Prospective cohort study, aiming to evaluate the ability of the current definitions of BPD to predict serious respiratory morbidity at 20-50 month corrected age. Methods sample included all babies with gestational age Results data included total of 348 babies . Total followup rate is 81.6 % .Yearly followup rate was 62 % , 88% , 85 % and 94 % for babies born in 2018, 2019, 2020, Jan-May 2021 respectively . 53.2 % of our population are males .80% of population gestational age ranged between 24-28 weeks. Chorioamnionitis was present in 9.5 % and 85% received antenatal steroids. Around 70% of babies required intubation during resuscitation . Almost 11 % had LOS . 4.9 % of our babies were discharged on oxygen. Total number of deaths were 19 . 3 of them died after transfer to Sidra hospital and 2 died as a result of cardiac arrest post discharge . BPD cases were divided into 2 groups of mild and Moderate/severe . Moderate / severe BPD cases were 34.8 % ( 122) , 18.5 % (65 ) and 29.3% (103) according to 2001, 2016 and 2019 respectively . Regarding comparison between different definitions, 2001 definition was significant for postnatal steroids use , discharge on home o2 , and > 3 hospital admissions . 2016 definition was significant for postnatal steroids , home o2 , tracheostomy . 2019 was significant for postnatal steroids , home o2 , > 3 hospital admissions. In conclusion all three definitions are comparable , however we encourage our institution to agree on one definition . We emphasize on the importance of evidence based medicine in research.