• Geoffrey Wigmore, Adam M Deane, James Anstey, Michael Bailey, Shailesh Bihari, Glenn Eastwood, Rashmi Ghanpur, Matthew J Maiden, Jeffrey J Presneill, Jaishankar Raman, Rinaldo Bellomo, and HAS FLAIR-II trial investigators.
• Department of Anaesthesia, Western Health, Melbourne, VIC, Australia.
• Crit Care Resusc. 2022 Dec 5; 24 (4): 309318309-318.

AbstractBackground: Fluid bolus therapy with 20% albumin may shorten the duration of vasopressor therapy in patients after cardiac surgery. Objective: To describe the study protocol and statistical analysis plan for the 20% Human Albumin Solution Fluid Bolus Administration Therapy in Patients after Cardiac Surgery-II (HAS FLAIR-II) trial. Design, setting, participants and intervention: HAS FLAIR-II is a phase 2b, multicentre, parallel group, openlabel, randomised controlled trial that will be conducted at six Australian intensive care units. Patients requiring fluid bolus therapy after cardiac surgery will be randomly assigned in a 1:1 ratio to the intervention of fluid bolus therapy with 20% albumin or a comparator of fluid bolus therapy with a crystalloid solution. Main outcome measures: The primary outcome measure is the cumulative duration of vasopressor therapy. Secondary outcomes include vasopressor use, service utilisation, and mortality. All analyses will be conducted on an intention-to-treat basis. Results and conclusion: The study protocol and statistical analysis plan will guide the conduct and analysis of the HAS FLAIR-II trial, such that analytical and reporting biases are minimised. Trial registration: This trial has been registered with the Australian New Zealand Clinical Trials Registry (ACTRN No. 12620000137998).© 2022 College of Intensive Care Medicine of Australia and New Zealand.

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