Through the popularization of the technique of stabilized pressure suction of the subglottic secretion, to improve the drainage effect of subglottic secretion of intensive care unit (ICU) patients in this region, and to improve the quality of subglottic secretion management.

The stabilized pressure suction device on continuous aspiration of subglottic secretion was designed and the pressure-stabilized suction technique for subglotted secretion was promoted in 7 hospitals in Zhejiang province from January to December of 2018. The quality of drainage of subglottic secretion before and after the promotion of the stabilized suction technique were compared. In every hospital the included research objects were divided into two groups, and the subglottic secretion stabilized pressure suction devices adopted two suctioning methods of intermittent suction and continuous suction accordingly in the two groups: intermittent suction group (n=161) and continuous suction group (n=160) , the incidence of blockage of decompression holes and instability of negative pressure control were compared between the two groups, and the incidences of drainage, cough, blockage of suction tube and mucosal injury during suction were compared.

After promotion, the quality of subglotted secretion suctioning in 7 hospitals all improved, among which the dimensions of "suction operation" and "outcome indicator" showed statistically significant difference before and after promotion (P<0.05) . In terms of the performance of stabilized pressure suction device, the blockage rate of decompression holes in continuous suction group (3.13%) was higher than that in intermittent suction group, and the incidence of negative pressure control instability (3.75%) was lower than that in intermittent suction group; in terms of the effect of subglottic drainage, the drainage flow rate of subglottic secretion in continuous suction group was (53.55±5.92) ml/d, and the daily coughing times were (3.01±1.13) , both better than the intermittent suction group, the difference was statistically significant (t=12.374, -2.625; P< 0.05) .

Subglottic secretion pressure-stabilized suction device has good performance, and the technology of pressure-stabilized suction can effectively improve drainage effect. The method of continuous suction is recommended in this study, which has a significant effect on improving the drainage quality of subglottic secretion and has a good promotion effect.

Intensive care unit; Subglottic secretion; Suction technique; Technique promotion