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Comment
. 2020 Feb 1;201(3):386-388.
doi: 10.1164/rccm.201908-1502LE.

Simple Electrical Impedance Tomography Measures for the Assessment of Ventilation Distribution

Inéz Frerichs  1 , Zhanqi Zhao  2   3 , Tobias Becher  1
Affiliations
Comment

Simple Electrical Impedance Tomography Measures for the Assessment of Ventilation Distribution

Inéz Frerichs et al. Am J Respir Crit Care Med. .
No abstract available

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Figures

Figure 1.
Figure 1.
Examples of functional electrical impedance tomography images showing different hypothetical distributions of pixel tidal impedance variation (TV) and their effects on the calculated values of 1) the center of ventilation (CoV) and 2) the proportion of ventilation in the dorsal regions as a fraction of global ventilation detected in the image (TVdorsal/TVglobal). The top images illustrate the effects of a dorsal shift (white arrows) in ventilation (A) and the bottom images show the effects of ventrodorsal asymmetry in the ventilation distribution (B). The ventral side of the chest is shown at the top and the right side of the chest is shown on the left side of each image. The red dashed lines divide all images into two halves. The total sum of all pixel TV values is identical in all six images. The regional sums of these values in the ventral image halves equal those in the dorsal ones in all top images (A) and in the left bottom image (B). The middle image in B has a higher sum of pixel TV values in the dorsal image than in the ventral image half, whereas the opposite is seen in the right image.
See this image and copyright information in PMC

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References

    1. Frerichs I, Amato MB, van Kaam AH, Tingay DG, Zhao Z, Grychtol B, et al. TREND Study Group. Chest electrical impedance tomography examination, data analysis, terminology, clinical use and recommendations: consensus statement of the TRanslational EIT developmeNt stuDy group. Thorax. 2017;72:83–93. - PMC - PubMed
    1. Yoshida T, Piraino T, Lima CAS, Kavanagh BP, Amato MBP, Brochard L. Regional ventilation displayed by electrical impedance tomography as an incentive to decrease positive end-expiratory pressure. Am J Respir Crit Care Med. 2019;200:933–937. - PubMed
    1. Frerichs I, Hahn G, Golisch W, Kurpitz M, Burchardi H, Hellige G. Monitoring perioperative changes in distribution of pulmonary ventilation by functional electrical impedance tomography. Acta Anaesthesiol Scand. 1998;42:721–726. - PubMed
    1. Karsten J, Luepschen H, Grossherr M, Bruch HP, Leonhardt S, Gehring H, et al. Effect of PEEP on regional ventilation during laparoscopic surgery monitored by electrical impedance tomography. Acta Anaesthesiol Scand. 2011;55:878–886. - PubMed
    1. Schibler A, Yuill M, Parsley C, Pham T, Gilshenan K, Dakin C. Regional ventilation distribution in non-sedated spontaneously breathing newborns and adults is not different. Pediatr Pulmonol. 2009;44:851–858. - PubMed