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Lookup NU author(s): Dr Anthony RostronORCiD
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© 2021, Springer-Verlag GmbH Germany, part of Springer Nature.Purpose: Fluid overload is common in critical illness and is associated with mortality. This study investigated the feasibility of a randomised trial comparing conservative fluid administration and deresuscitation (active removal of accumulated fluid using diuretics or ultrafiltration) with usual care in critical illness. Methods: Open-label, parallel-group, allocation-concealed randomised clinical feasibility trial. Mechanically ventilated adult patients expected to require critical care beyond the next calendar day were enrolled between 24 and 48 h following admission to the intensive care unit (ICU). Patients were randomised to either a 2-stage fluid strategy comprising conservative fluid administration and, if fluid overload was present, active deresuscitation, or usual care. The primary endpoint was fluid balance in the 24 h up to the start of study day 3. Secondary endpoints included cumulative fluid balance, mortality, and duration of mechanical ventilation. Results: One hundred and eighty patients were randomised. After withdrawal of 1 patient, 89 patients assigned to the intervention were compared with 90 patients assigned to the usual care group. The mean plus standard deviation (SD) 24-h fluid balance up to study day 3 was lower in the intervention group (− 840 ± 1746 mL) than the usual care group (+ 130 ± 1401 mL; P < 0.01). Cumulative fluid balance was lower in the intervention group at days 3 and 5. Overall, clinical outcomes did not differ significantly between the two groups, although the point estimate for 30-day mortality favoured the usual care group [intervention arm: 19 of 90 (21.6%) versus usual care: 14 of 89 (15.6%), P = 0.32]. Baseline imbalances between groups and lack of statistical power limit interpretation of clinical outcomes. Conclusions: A strategy of conservative fluid administration and active deresuscitation is feasible, reduces fluid balance compared with usual care, and may cause benefit or harm. In view of wide variations in contemporary clinical practice, large, adequately powered trials investigating the clinical effectiveness of conservative fluid strategies in critically ill patients are warranted.
Author(s): Silversides JA, McMullan R, Emerson LM, Bradbury I, Bannard-Smith J, Szakmany T, Trinder J, Rostron AJ, Johnston P, Ferguson AJ, Boyle AJ, Blackwood B, Marshall JC, McAuley DF
Publication type: Article
Publication status: Published
Journal: Intensive Care Medicine
Print publication date: 01/02/2022
Online publication date: 16/12/2021
Acceptance date: 27/11/2021
ISSN (print): 0342-4642
ISSN (electronic): 1432-1238
Publisher: Springer Science and Business Media Deutschland GmbH
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