“…The core methods for literature searching, evidence appraisal and synthesis are similar for living and partial updating of traditional (static) guidelines, but living guidelines involve a frequent and explicit approach to keeping the guidelines up-to-date. This approach includes frequent surveillance for newly published clinical studies, the prospective, ongoing incorporation of those studies into the evidence base, and the use of pre-agreed triggers for updating the corresponding evidence-based recommendations ( Akl et al, 2017 ; Cheyne et al, 2023a ; Cheyne et al, 2023b ; Fraile Navarro et al, 2023 ; McDonald et al, 2023 ; Synnot et al, 2023 ) The criteria for selecting living topics are: clinical or policy priority of the question, important uncertainty in the existing evidence, and high likelihood of emergence of new evidence where the clinical/policy context is likely to change ( Akl et al, 2017 ; Cheyne et al, 2023a ). The frequency of updating a living topic is determined by the nature of the health problem, the flow of emerging evidence, the capacity of the evidence review team to search, screen and appraise new evidence, and the capacity of the Guideline Development Panel to meet and determine the implications of the new evidence ( Cheyne et al, 2023b ; McDonald et al, 2023 ) For example, searches for living COVID-19 guidelines were conducted on a daily basis during the height of the pandemic, whereas searches for living stroke guidelines are conducted every 3 months ( Tendal et al, 2021 ; Hill et al, 2022 ).…”