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Copyright of Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Geoscientica Sinica is the property of Acta Geoscientica Sinica Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shandong Medical Journal is the property of Shandong Medical Health Newspapers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To observe the clinical effect of different methods of sputum suction in severe craniocerebral injury patients with tracheotomy. Methods A total of 80 severe craniocerebral injury patients with tracheotomy，who were all unconscious without mechanical ventilation，in Department of Neurosurgery in the hospital from May 2016 to May 2017 were selected and divided into the control group and the research group according to tracheotomy sequence，40 cases in each group. The control group took the sputum suction method according to the demand，while the research group took the sputum suction method with percussion on back，and the effect of sputum suction in the two group was compared. Results The proportion of saturation of pulse oximetry rising to 90% or more in 30 min after sputum suction and the sputum interval time in the research group[84.0%（42/50），（3.60±0.66）h ] were more than those in the control group[66.0%（33/50），（1.65±0.53）h]，and the degree of artificial airway patency in the research group was superior to that in the control group. The occurrence rate of hypostatic pneumonia and tracheal mucosa damage in the research group [22.5%（9/40），15.0%（6/40）] were remarkably lower than those in the control group [45.0%（18/40），35.0%（14/40）]，with statistically significant difference（P<0.05）. Conclusion For the severe craniocerebral injury patients with tracheotomy，sputum suction with percussion on back can restore saturation pulse oximetry quickly，decrease the occurrence of hypoxia，prolong sputum interval time，reduce the incidence of hypostatic pneumonia and tracheal mucosa damage. [ABSTRACT FROM AUTHOR]