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. 2022 May 16;11(10):2796.
doi: 10.3390/jcm11102796.

Design and Rationale of the Sevoflurane for Sedation in Acute Respiratory Distress Syndrome (SESAR) Randomized Controlled Trial

Affiliations

Design and Rationale of the Sevoflurane for Sedation in Acute Respiratory Distress Syndrome (SESAR) Randomized Controlled Trial

Raiko Blondonnet et al. J Clin Med. .

Abstract

Preclinical studies have shown that volatile anesthetics may have beneficial effects on injured lungs, and pilot clinical data support improved arterial oxygenation, attenuated inflammation, and decreased lung epithelial injury in patients with acute respiratory distress syndrome (ARDS) receiving inhaled sevoflurane compared to intravenous midazolam. Whether sevoflurane is effective in improving clinical outcomes among patients with ARDS is unknown, and the benefits and risks of inhaled sedation in ARDS require further evaluation. Here, we describe the SESAR (Sevoflurane for Sedation in ARDS) trial designed to address this question. SESAR is a two-arm, investigator-initiated, multicenter, prospective, randomized, stratified, parallel-group clinical trial with blinded outcome assessment designed to test the efficacy of sedation with sevoflurane compared to intravenous propofol in patients with moderate to severe ARDS. The primary outcome is the number of days alive and off the ventilator at 28 days, considering death as a competing event, and the key secondary outcome is 90 day survival. The planned enrollment is 700 adult participants at 37 French academic and non-academic centers. Safety and long-term outcomes will be evaluated, and biomarker measurements will help better understand mechanisms of action. The trial is funded by the French Ministry of Health, the European Society of Anaesthesiology, and Sedana Medical.

Keywords: acute respiratory distress syndrome; clinical trial; inhaled sedation; sevoflurane.

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Conflict of interest statement

M.J. is a principal investigator of the ISCA study (ClinicalTrials.gov Identifier: NCT04383730), with grants from Sedana Medical; J.-M.C. and M.J. received fees from Sedana Medical for participation in a scientific advisory panel in 2019; M.J. received fees from Sedana Medical for participation in seminars in 2019, 2020, and 2021; M.J. received consulting fees in 2020 and 2021, and fees for participation in a scientific advisory panel in 2021, from Abbvie. Neither Sedana Medical nor Abbvie have any influence on the study design, collection, analysis, interpretation of data, and writing. The other authors have nothing to disclose. All authors have read and agreed to the published version of the manuscript.

Figures

Figure 1
Figure 1
CONSORT diagram of the SESAR trial. * Because, in emergency situations, sedation and ventilation must be initiated as early as possible, the study protocol provides for a waiver of informed consent from the patient. The consent from the patient’s next of kin will therefore be sought actively during the 24 h enrollment time window. In case the patient’s next of kin cannot be reached in a timely manner, the investigator will decide to include the patient in the study using an emergent consent procedure. Deferred informed consent will be obtained from participants for potential continuation of the research.
Figure 2
Figure 2
Summary of interventions within the SESAR trial. Definition of abbreviations: SESAR = sevoflurane for sedation in ARDS; ARDS = acute respiratory distress syndrome; RASS = Richmond agitation-sedation scale; BPS = behavioral pain scale; PBW = predicted body weight; PEEP = positive end-expiratory pressure; Pplat = inspiratory plateau pressure.

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