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. 2022 May 27;9(6):789. doi: 10.3390/children9060789

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Left LUS examination during RMs. The point where the LUS probe is applied is indicated at the top of the figure; on the left, the PEEP level at that moment is specified. Baseline LUS (PEEP of 10 cmH₂O) showed a C pattern (severe loss of aeration with dynamic air bronchograms). With a PEEP of 30 cmH₂O, the pattern changed from C to B1 (moderate loss of lung aeration with multiple well-defined B-lines and some A-lines). After RMs (PEEP of 14 cmH₂O), LUS showed a severe loss of lung aeration with multiple coalescent B-lines but some A-lines in the anterior and lateral zones (B2 pattern).