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Observational Study
. 2022 Jun 1;26(1):157.
doi: 10.1186/s13054-022-04023-y.

Association between early cumulative fluid balance and successful liberation from invasive ventilation in COVID-19 ARDS patients - insights from the PRoVENT-COVID study: a national, multicenter, observational cohort analysis

Collaborators, Affiliations
Observational Study

Association between early cumulative fluid balance and successful liberation from invasive ventilation in COVID-19 ARDS patients - insights from the PRoVENT-COVID study: a national, multicenter, observational cohort analysis

Sanchit Ahuja et al. Crit Care. .

Abstract

Background: Increasing evidence indicates the potential benefits of restricted fluid management in critically ill patients. Evidence lacks on the optimal fluid management strategy for invasively ventilated COVID-19 patients. We hypothesized that the cumulative fluid balance would affect the successful liberation of invasive ventilation in COVID-19 patients with acute respiratory distress syndrome (ARDS).

Methods: We analyzed data from the multicenter observational 'PRactice of VENTilation in COVID-19 patients' study. Patients with confirmed COVID-19 and ARDS who required invasive ventilation during the first 3 months of the international outbreak (March 1, 2020, to June 2020) across 22 hospitals in the Netherlands were included. The primary outcome was successful liberation of invasive ventilation, modeled as a function of day 3 cumulative fluid balance using Cox proportional hazards models, using the crude and the adjusted association. Sensitivity analyses without missing data and modeling ARDS severity were performed.

Results: Among 650 patients, three groups were identified. Patients in the higher, intermediate, and lower groups had a median cumulative fluid balance of 1.98 L (1.27-7.72 L), 0.78 L (0.26-1.27 L), and - 0.35 L (- 6.52-0.26 L), respectively. Higher day 3 cumulative fluid balance was significantly associated with a lower probability of successful ventilation liberation (adjusted hazard ratio 0.86, 95% CI 0.77-0.95, P = 0.0047). Sensitivity analyses showed similar results.

Conclusions: In a cohort of invasively ventilated patients with COVID-19 and ARDS, a higher cumulative fluid balance was associated with a longer ventilation duration, indicating that restricted fluid management in these patients may be beneficial. Trial registration Clinicaltrials.gov ( NCT04346342 ); Date of registration: April 15, 2020.

Keywords: ARDS; COVID-19; Critical care; Cumulative fluid balance; Liberation of ventilation.

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Conflict of interest statement

All authors declare no competing interests related to the submitted work.

Figures

Fig. 1
Fig. 1
Flowchart of the study
Fig. 2
Fig. 2
Survival and marginal effect plots. a Survival plots (unadjusted and adjusted) showing predicted probability of successful liberation of invasive ventilation as a function of day 3 fluid balance—separated in tertiles. b Marginal effect (unadjusted and adjusted) of day 3 cumulative fluid balance on the hazard of successful liberation from invasive ventilation after adjustment for predefined confounding variables. A higher day 3 cumulative fluid balance was associated with a lower hazard (i.e., a lower probability over time) of successful liberation
Fig. 3
Fig. 3
Sensitivity analysis showing the consistency of main effect over ARDS severity. ARDS acute respiratory distress syndrome

Comment in

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