Analysis of risk factors for asphyxia caused by sputum retention after tracheal stent implantation
SHI Xiao-bao1, ZHAO Gang2, FEI Cheng2, SUN Ling-ling1
1.Department of Radiology, The Fourth Hospital of China Medical University, Shenyang 110032, China;
2.Department of Radiology, Shengjing Hospital of China Medical University, Shenyang 110004, China
Abstract：Objective: To investigate the risk factors of asphyxia caused by sputum retention and to analyze the correlation between the risk factors and the occurrence of asphyxia after stent implantation. Methods: A total of 110 patients with central airway obstruction or tracheal fistula who were encountered in author’s hospital during the period from Jan. 2011 to Jan. 2016 were enrolled in this study. Tracheal stent placement was performed in all patients. After the treatment, the patients were divided into two groups based on the occurrence of asphyxia caused by sputum retention. According to literatures, we choose risk factors such as gender, etiology, types of stents, infection and the history of radiotherapy. The data were compared between the two groups through the univariate factor and multivariate factor analysis to evaluate their correlations. Results: 18 cases(16.4%) showed sputum retention with asphyxia and died as a result of respiratory and circulatory failure. In all patients with asphyxia, univariate analysis suggests that stent type, pleural effusion, anemia and respiratory failure were the risk factors leading to asphyxia. Age, etiology, and the history of radiotherapy were not significantly different. Multivariate analysis showed that preoperative type Ⅱ respiratory failure was significantly related to the occurrence of postoperative asphyxia. Conclusion: The presence of preoperative type Ⅱ respiratory failure is a significant risk factor associated with asphyxia caused by sputum retention after tracheal stent implantation.
史晓宝1，赵 罡2，费 城2，孙玲玲1. 气管支架术后气道高分泌窒息危险因素分析[J]. 中国临床医学影像杂志, 2018, 29(5): 324-328.
SHI Xiao-bao1, ZHAO Gang2, FEI Cheng2, SUN Ling-ling1. Analysis of risk factors for asphyxia caused by sputum retention after tracheal stent implantation. JOURNAL OF CHINA MEDICAL IMAGING, 2018, 29(5): 324-328.
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