To summarize the prevention and treatment of airway obstruction after severe airway injury in order to improve the effect.

The clinical data of 34 patients with severe air burns were analyzed retrospectively in department of burns, Zhengzhou First People′s Hospital from February 2011 to February 2015. According to different treatment methods, the patients will were divided into the observation group and the control group, 17 cases in each group. The control group were given the conventional treatment immediately after the injury, such as oxygen, atomization. The observation group after the injury, the reasons for airway obstruction was summarized firstly, the airway pressure was too high, ventilator could not be effective, ventilation was considerd to give the comprehensive improvement of ventilation treatment such as bronchoscopy. The length of hospital stay, the incidence of airway obstruction again, sucking phlegm, sputum scab formation, irritating cough, incidence of airway mucosa damage, blood oxygen saturation, arterial oxygen partial pressure, respiration, pulse, forced vital capacity (FVC), the first second (FEV1), the highest expiratory flow (PEF) were compared between the two groups. Using SPSS15.0 statistical software, relevant indicators were analyzed by t test and Chi-square test.

The length of hhospital stay was (30.1±9.0) d in the observation group was significantly shorter than that the control group (41.4±11.7) d, difference was statistically significant (t=8.677, P=0.032). The incidence of airway obstruction in the control group and observation group were 41.18%, 11.76%, the difference was statistically significant(χ²=8.946, P=0.011). The incidence of aspiration, sputum scab formation, irritating cough and airway mucosal injury in the control group were 47.06%, 41.18%, 64.71%, 58.82%, 11.76%, 11.76%, 17.65% and 17.65% respectively in the observation group, the differences were statistically significant(P values were all less than 0.05). After treatment, the oxygen saturation, arterial oxygen pressure, respiration and pulse in the control group were (89.68±8.45)%, (92.34±6.82) mmHg, (95.46±5.62) times/min, (95.46±5.62) times/min. The oxygen saturation, arterial oxygen pressure, respiration and pulse in the observation group were (95.34±7.23) %, (98.94±5.23) mmHg, (78.34±7.23) times/min, (16.46±1.67) times/min. There were significant differences between the two groups before and after treatment (P values were all less than 0.05). After treatment, the levels of FVC, FEV1 and PEF in the control group were (3.01±0.61), (2.24±0.81), (7.11±1.41) L. The levels of FVC, FEV1 and PEF in the observation group were (4.11±0.32), (4.11±0.32), (8.21±1.52) L, there were significant differences between the two groups (P values were all less than 0.05).

Early identification of airway obstruction and timely and effective airway can reduce the incidence of airway obstruction after severe airway injury, shorten the hospital stay and improve the lung function of patients.