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• W2983964739 endingPage "512" @default.
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• W2983964739 abstract "Abstract Mechanical evaluation of tracheal grafts is of great relevance for transplant research. Although there are some publications demonstrating different techniques of tracheal mechanical evaluation, there is still no definitive or preferred protocol available. Here, we present a simple image processing acquisition system that can be used for in vivo experiments. Six male Wistar rats were submitted to orotracheal intubation and a longitudinal incision was made to expose the trachea. Images of tracheae were acquired from a video camera in different scenarios of bronchoconstriction using methacholine (MCh) (Basal, PBS, MCh 30 μg/kg, MCh 300 μg/kg, and postmetabolized) during imposed‐inspiration and imposed‐expiration. The area variation ratio (the ratio between areas during expiration vs. inspiration) was 1.1× for the Basal group, while the ratio for MCh 300 µg/kg was 6.5×. The area variation of imaged tracheae was statistically significant at the dose of MCh 300 µg/kg for imposed‐inspiration versus imposed‐expiration ( P = .002). Likewise, elastance data of respiratory mechanics indicated a statistically significant difference at the dose of MCh 300 µg/kg for imposed‐inspiration versus imposed‐expiration ( P = .026). Our image processing analysis protocol presented corresponding behavior when compared to mechanical parameters of the respiratory system. In addition, our image acquisition system was able to highlight the differences between imposed‐inspiration and imposed‐expiration. Image analysis of the tracheal area variation seems to be in agreement with the elastance of the respiratory system. Taken together, these observations may help future studies of tracheal transplantation for in situ assessment of graft patency." @default.
• W2983964739 created "2019-11-22" @default.
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• W2983964739 date "2019-12-15" @default.
• W2983964739 modified "2023-10-16" @default.
• W2983964739 title "An in vivo image acquisition system for the evaluation of tracheal mechanics in rats" @default.
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• W2983964739 doi "https://doi.org/10.1111/aor.13604" @default.
• W2983964739 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/31715014" @default.
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