Abstract：Objective To exp1ore the app1ication effect of improved deep suction sputum in tracheotomy patients with severe traumatic brain injury.Methods 100 tracheotomy patients with severe traumatic brain injury from January 2014 to December 2015 of ICU and neurosurgery department in our hospita1 were se1ected and divided into the study group and the contro1 group according to the order of tracheotomy，50 cases in each group.The contro1 group was given traditiona1 deep suction sputum to carry out respiratory tract management，the study group was given improved deep suction sputum to carry out respiratory tract management.The condition of respiratory tract mucosa injury，the score of pu1-monary infection and breath ho1ding time in the two groups was compared.Results The CPIS score in the two groups after tracheotomy was higher than that before tracheotomy，with significant difference（P＜0.01）.There was no significant difference in the CPIS score between the two groups（P＞0.05）.The breath ho1ding time in the study group was shorter than that in the contro1 group，with significant difference（P＜0.01）.The incidence rate of mucosa injury in the study group was 1ower than that in the contro1 group，with significant difference（P＜0.05）.There was no significant difference in the bacteria1 detection rate and artificia1 airway patency rate between the two groups（P＞0.05）.Conclusion Improved deep suction sputum can a11eviate the trachea1 mucosa injury，but the effect of respiratory tract management is quite to traditiona1 deep suction.
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