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. 2022 Sep 15;130(1):e128–e136. doi: 10.1016/j.bja.2022.07.052

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© 2022 The Author(s)

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

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Fig 2 — Representative example of the wave intensity analysis changes after lung resection. Wave intensity analysis plots are displayed for the nonoperative (left column) and operative (right column) PAs, preoperatively (top row), on postoperative Day 2 (POD2; middle row), and at 2 months (bottom row). Net wave intensity is plotted by the blue line with the forward compression wave area (FCW; purple) and backward compression wave area (BCW; green) highlighted. Wave reflection index (WRI) and time to peak BCW results from the entire study population are noted on each plot. ^#Significant difference from preoperative, ^¥Significant difference from POD2; both Wilcoxon signed-rank test. ^llSignificant difference from non-operative PA at same time point; Wilcoxon rank-sum test.