Peri-operative diaphragm ultrasound as a new method of recognizing post-operative residual curarization

Abstract Background This study sought to evaluate the diagnostic accuracy of peri-operative diaphragm ultrasound in assessing post-operative residual curarization (PORC). Methods Patients undergoing non-thoracic and non-abdominal surgery under general anaesthesia were enrolled from July 2019 to Octo...

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Autores principales: Jiaxin Lang, Yuchao Liu, Yuelun Zhang, Yuguang Huang, Jie Yi
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Lenguaje:EN
Publicado: BMC 2021
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spelling oai:doaj.org-article:a976e0bd9f5c49fcbbd6fb2b4127c7552021-11-21T12:08:00ZPeri-operative diaphragm ultrasound as a new method of recognizing post-operative residual curarization10.1186/s12871-021-01506-31471-2253https://doaj.org/article/a976e0bd9f5c49fcbbd6fb2b4127c7552021-11-01T00:00:00Zhttps://doi.org/10.1186/s12871-021-01506-3https://doaj.org/toc/1471-2253Abstract Background This study sought to evaluate the diagnostic accuracy of peri-operative diaphragm ultrasound in assessing post-operative residual curarization (PORC). Methods Patients undergoing non-thoracic and non-abdominal surgery under general anaesthesia were enrolled from July 2019 to October 2019 at Peking Union Medical College Hospital. A train-of-four ratio (TOFr) lower than 0.9 was considered as the gold standard for PORC. Diaphragm ultrasound parameters included diaphragmatic excursion (DE) and diaphragm thickening fraction (DTF) during quiet breathing (QB) and deep breathing (DB). The diaphragm excursion fraction (DEF) was calculated as the DE-QB divided by the DE-DB. The diaphragm excursion difference (DED) was defined as DE-DB minus DE-QB. Receiver operating characteristic curve analysis was used to determine the cut-off values of ultrasound parameters for the prediction of PORC. Results In total, 75 patients were included, with a PORC incidence of 54.6%. The DE-DB and DED were positively correlated with the TOFr, while the DEF was negatively correlated with the TOFr. The DE-DB cut-off value for predicting PORC was 3.88 cm, with a sensitivity of 85.4% (95% confidence interval [CI]: 70.1–93.9%), specificity of 64.7% (95% CI: 46.4–79.7%), positive likelihood ratio of 2.42 (95% CI 1.5–3.9), and negative likelihood ratio of 0.23 (95% CI: 0.1–0.5). The DED cut-off value was 1.5 cm, with a specificity of 94.2% (95% CI: 80.3–99.3%), sensitivity of 63.4% (95% CI: 46.9–77.9%), positive likelihood ratio of 10.78 (95% CI: 2.8–42.2), and negative likelihood ratio of 0.39 (95% CI: 0.3–0.6). Conclusions Peri-operative diaphragm ultrasound may be an additional method aiding the recognition of PORC, with DED having high specificity.Jiaxin LangYuchao LiuYuelun ZhangYuguang HuangJie YiBMCarticleDiaphragm ultrasoundDiagnostic testNeuromuscular monitorTrain-of-fourPost-operative residual CurarizationAnesthesiologyRD78.3-87.3ENBMC Anesthesiology, Vol 21, Iss 1, Pp 1-9 (2021)
institution DOAJ
collection DOAJ
language EN
topic Diaphragm ultrasound
Diagnostic test
Neuromuscular monitor
Train-of-four
Post-operative residual Curarization
Anesthesiology
RD78.3-87.3
spellingShingle Diaphragm ultrasound
Diagnostic test
Neuromuscular monitor
Train-of-four
Post-operative residual Curarization
Anesthesiology
RD78.3-87.3
Jiaxin Lang
Yuchao Liu
Yuelun Zhang
Yuguang Huang
Jie Yi
Peri-operative diaphragm ultrasound as a new method of recognizing post-operative residual curarization
description Abstract Background This study sought to evaluate the diagnostic accuracy of peri-operative diaphragm ultrasound in assessing post-operative residual curarization (PORC). Methods Patients undergoing non-thoracic and non-abdominal surgery under general anaesthesia were enrolled from July 2019 to October 2019 at Peking Union Medical College Hospital. A train-of-four ratio (TOFr) lower than 0.9 was considered as the gold standard for PORC. Diaphragm ultrasound parameters included diaphragmatic excursion (DE) and diaphragm thickening fraction (DTF) during quiet breathing (QB) and deep breathing (DB). The diaphragm excursion fraction (DEF) was calculated as the DE-QB divided by the DE-DB. The diaphragm excursion difference (DED) was defined as DE-DB minus DE-QB. Receiver operating characteristic curve analysis was used to determine the cut-off values of ultrasound parameters for the prediction of PORC. Results In total, 75 patients were included, with a PORC incidence of 54.6%. The DE-DB and DED were positively correlated with the TOFr, while the DEF was negatively correlated with the TOFr. The DE-DB cut-off value for predicting PORC was 3.88 cm, with a sensitivity of 85.4% (95% confidence interval [CI]: 70.1–93.9%), specificity of 64.7% (95% CI: 46.4–79.7%), positive likelihood ratio of 2.42 (95% CI 1.5–3.9), and negative likelihood ratio of 0.23 (95% CI: 0.1–0.5). The DED cut-off value was 1.5 cm, with a specificity of 94.2% (95% CI: 80.3–99.3%), sensitivity of 63.4% (95% CI: 46.9–77.9%), positive likelihood ratio of 10.78 (95% CI: 2.8–42.2), and negative likelihood ratio of 0.39 (95% CI: 0.3–0.6). Conclusions Peri-operative diaphragm ultrasound may be an additional method aiding the recognition of PORC, with DED having high specificity.
format article
author Jiaxin Lang
Yuchao Liu
Yuelun Zhang
Yuguang Huang
Jie Yi
author_facet Jiaxin Lang
Yuchao Liu
Yuelun Zhang
Yuguang Huang
Jie Yi
author_sort Jiaxin Lang
title Peri-operative diaphragm ultrasound as a new method of recognizing post-operative residual curarization
title_short Peri-operative diaphragm ultrasound as a new method of recognizing post-operative residual curarization
title_full Peri-operative diaphragm ultrasound as a new method of recognizing post-operative residual curarization
title_fullStr Peri-operative diaphragm ultrasound as a new method of recognizing post-operative residual curarization
title_full_unstemmed Peri-operative diaphragm ultrasound as a new method of recognizing post-operative residual curarization
title_sort peri-operative diaphragm ultrasound as a new method of recognizing post-operative residual curarization
publisher BMC
publishDate 2021
url https://doaj.org/article/a976e0bd9f5c49fcbbd6fb2b4127c755
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AT yuchaoliu perioperativediaphragmultrasoundasanewmethodofrecognizingpostoperativeresidualcurarization
AT yuelunzhang perioperativediaphragmultrasoundasanewmethodofrecognizingpostoperativeresidualcurarization
AT yuguanghuang perioperativediaphragmultrasoundasanewmethodofrecognizingpostoperativeresidualcurarization
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