ANI and BIS variations in supine and prone position during closed-tracheal suction in sedated and myorelaxed ICU patient

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ORIGINAL RESEARCH

ANI and BIS variations in supine and prone position during closed‑tracheal suction in sedated and myorelaxed ICU patients with severe COVID‑19: A retrospective study E. Boselli1,2   · A. Fatah3 · S. Ledochowski3 · B. Allaouchiche2 Received: 25 June 2020 / Accepted: 21 October 2020 © Springer Nature B.V. 2020

Abstract The purpose of this study was to assess Analgesia/Nociception Index (ANI) and bispectral index (BIS) variations in supine and prone position during closed-tracheal suction in intensive care unit (ICU) patients with severe COVID-19 pneumonia requiring myorelaxation and prone positioning. We retrospectively reviewed the data of 15 patients hospitalized in ICU for severe COVID-19 pneumonia requiring sedation, myorelaxation and prone positioning. The BIS, instant ANI (ANIi), mean ANI (ANIm), heart rate (HR), systolic blood pressure (SBP) and ­SpO2 were retrieved in supine and prone position 1 min before tracheal suction then every minute from the beginning of tracheal suction during 4 min and compared using ANOVA for repeated measures (p