2017
DOI: 10.1016/j.jtcvs.2016.10.003
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A clinical prediction model for prolonged air leak after pulmonary resection

Abstract: Objective Prolonged air leak increases cost and worsens outcomes after pulmonary resection. We aimed to develop a clinical prediction tool for prolonged air leak using pretreatment and intraoperative variables. Methods Patients who underwent pulmonary resection for lung cancer/nodules (1/2009-6/2014) were stratified by prolonged parenchymal air leak (>5 days). Using backward stepwise logistic regression with bootstrap resampling for internal validation, candidate variables were identified and a nomogram risk… Show more

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Cited by 58 publications
(64 citation statements)
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“…Significant variables were selected by the backward stepwise selection method based on Akaike information criterion. 13 Variables no longer contributing either statistically or clinically on statistical adjustment were then excluded. Based on the significant variables, a nomogram was constructed via the RMS package in R 3.3.1 (R Foundation for Statistical Computing, Vienna, Austria).…”
Section: Constructing the Nomogrammentioning
confidence: 99%
“…Significant variables were selected by the backward stepwise selection method based on Akaike information criterion. 13 Variables no longer contributing either statistically or clinically on statistical adjustment were then excluded. Based on the significant variables, a nomogram was constructed via the RMS package in R 3.3.1 (R Foundation for Statistical Computing, Vienna, Austria).…”
Section: Constructing the Nomogrammentioning
confidence: 99%
“…We identified a cut-off value at 24, which is similar to 25.5 pointed out by Brunelli. 18 This seems mostly because of a protective effect of diminished alveolar pressure, lower functional residual capacity and tidal volume, typical of overweight individuals ("biomechanical sealing milieu" 19,25 ). Lower FEV1 has long been recognized as a risk factor for PAL.…”
Section: Interpretation and Implementation Of The Proposed Risk Scorementioning
confidence: 99%
“…Elderly patients are more likely to have fragile lung parenchyma with reduced healing capacity, which may lead to PAL. Low BMI was also a significant risk factor of PAL, possibly because it represents poor nutritional status, which may also contribute to delayed healing [ 6 , 15 ]. Reduced preoperative pulmonary function, old age, and low BMI are consistent with the factors included in the previously reported scoring system to predict PAL [ 6 ].…”
Section: Discussionmentioning
confidence: 99%