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- W4281762891 abstract "Objective. The aim of the present study was to evaluate the variation of tidal volume-to-impedance ratio (VT/ZT) during positive end-expiratory pressure (PEEP) titration with electrical impedance tomography (EIT) measurement.Approach. Forty-two patients with acute respiratory distress syndrome were retrospectively analyzed. An incremental and subsequently a decremental PEEP trial were performed with steps of 2 cm H2O and duration of 2 min per step during volume-controlled ventilation with decelerating flow. EIT measurement was conducted in the 5th intercostal space andVTwas recorded simultaneously. The variation ofVT/ZT(RatioV) was defined as the changes in percentage to average ratio per cm H2O PEEP change. A z-score > 1 was considered as a significant variation and an implication that the measurement plane was inadequate.Main results. TheRatioVof 42 patients was 1.29 ± 0.80%·cm H2O-1. A z-score of 1 corresponded to the variation of 2.09%·cm H2O-1. Seven patients (16.7%) had a z-score > 1 and showed either positive or negative correlation between the volume-to-impedance ratio and PEEP.Significance. Electrode placement at 5th intercostal space might not be ideal for every individual during EIT measurement. Evaluation of volume-to-impedance ratio variation is necessary for patients undergoing maneuvers with wide alteration in absolute lung volume." @default.
- W4281762891 created "2022-06-13" @default.
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- W4281762891 date "2022-06-28" @default.
- W4281762891 modified "2023-10-05" @default.
- W4281762891 title "Is there a need for individualized adjustment of electrode belt position during EIT-guided titration of positive end-expiratory pressure?" @default.
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- W4281762891 doi "https://doi.org/10.1088/1361-6579/ac73d6" @default.
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