Compare the clinical effectiveness of silicone intubation for treating chronic dacryocystitis with different type silicone stents

Abstract

Objective To compare the clinic effectiveness of silicone intubation for treating chronic dacryocystitis with different type silicone stents. Methods In a retrospective, nonrandomized comparative case series,from March 2014 to Janurary 2016,696 cases (763 eyes) with chronic dacryocystitis were divided into type A silicone stent group (314 eyes) and type A1 silicone stent group group (449 eyes) depending on the type of silicone stent. And the patients were followed up for 3 months after the removal of tubes.The patency of lacrimal duct, the rate of stent drawn in the correct position for the first time, operation time and incidence of complications were observed. Results After 3 months of postextubation,114 eyes were cured, 74 eyes were improved,126 eyes were failed,the overall successful rate was 59.87% in type A silicone stent group.And 209 eyes were cured, 96 eyes were improved,144 eyes were failed,the overall successful rate was 67.93% in type A1 silicone stent group. The difference between two groups had statistically significance (P =0.022). the stents were drawn in the correct position firstly in 61 eyes in type A silicone stent group, and153 eyes in type A1 silicone stent group. The difference between two groups had statistically significance (P <0.01) .The mean operation time was 13.5min in type A silicone stent group,and 9.7min in type A1 silicone stent group. The difference between two groups were statistically significant (P <0.01). Failure of extubation was observed in 32 eyes in type A silicone stent group and 23 eyes in type A1 silicone stent group. The incidence of extubation failure in type A1 silicone stent group was lower than that in type A silicone stent group with statistically significance (P =0.008). Conclusion Type A1 Silicone stents in the treatment of chronic dacryocystitis were much easier drawn in the correct position firstly than type A silicone stent. They can also shorten operation time, reduce the injury to lacrimal duct mucosa, so that can improve the success rate of surgery. And the incidence of extubation failure was significantly lower than that of type A silicone stent. So that the efficacy of type A1 silicone stent in treatment of chronic dacryocystitis was better than that of type A silicone stent. Key words: chronic dacryocystitis; silicone intubation