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. 2017 Aug 8;15:150. doi: 10.1186/s12957-017-1209-1

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© The Author(s). 2017

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — The correlation between postoperative complications and DMV, analyzed by one-way ANOVA. Sixty patients were divided into four groups based on the severity of postoperative complications as per Clavien-Dindo classification: group 1 (no complication, n = 18), group 2 (PLI only, n = 21), group 3 (PLI with other complications requiring pharmacological treatment, n = 14), and group 4 (PLI with other complications requiring at least invasive intervention, n = 7). As shown in Fig. 1, PLI, as the sole complication, did not prolong DMV compared to those without any complication (p = 0.537) most likely because of the use of effective antibiotics and proper respiratory management. However, PLI with other more severe complications that required at least pharmacological treatment (groups 3 and 4) seemed to remarkably prolong DMV, compared to those without any complication (p = 0.015 and 0.001, respectively). p = 0.997 (XLSTAT, Addinsoft Inc., New York, NY, USA)