A Study On Related Factors Of The Infected Mastoid Cavity After The Otitis Media Operation

Objective: Otitis media is a common disease in Department of ENT, bothchronic suppurative otitis media and middle ear cholesteatoma complications aregreatly harm to the human body, so the treatment can not be ignored. Operation is one ofthe main means of treatment, one of the aims in treating otitis media is obtained dryears after postoperative. Many factors effects dry ears after otitismedia operation, thepurpose of this study is to sum up each factor influence on the dry ear rate after otitismedia operation, including Chronic suppurative otitis media and otitis mediacholesteatoma, testing have statistical significance or not, in order to improve otitismedia clinical dry ear rate and reduce the recurrence and provide reference for furtherconsideration.Methods:135patients (135ears) with Otitis media are the research object, that arecollected from2010January to2013year in January operation trearment in our hospital.All the cases are ear disease, first to accept operation treatment, eliminate anemia,immune suppression, gastroesophageal reflux and other systemic factors.the Diagnosticcriteria for the infected mastoid cavity is that otitis media for sixth months after thesurgical cavity exists inflammatory polyps or continue to have purulent sex secretion[11].It will divid the cases that come from the qualified Patient into dry ear group (122cases)and not dry ear group (13cases), the data were statistically in two groups as follows:①whether preoperative dry ear: According The preoperative dry ear time more than1months or not Divided into two group;②the function of eustachian tube: That theeustachian tube function in normal and by artificial corrected function normal are onegroup and that the functional treatment is not ideal and is difficult to correct were divided into two groups;③the dressing change. Divided into two groups According to thedifferent dressing after operation in endoscopic or frontal mirror;④there is a history ofsmoking or not;⑤Whether with fungal infection divided into two groups. Arrangeingthe data into four tables, SPSS17.0software was used for statistical analysis.the singlefactor Pearson chi square test, P <0.05as the difference has statistical significance,exclude the impact is not statistically significant, and analysis the two statisticalsignificance groups’ OR value using the Logistic regression come to.Result:1. A total of135patients were included in the study, aged between7-77years old,average age42.21±7.21years old, male: female=59:76. Dry ear group of122people,reinfection group13, the reinfection rate was9.63%.2. The result about Single factor analysis of several groups of the influencing factorsin the study is that the reinfection rate between different Dressing style is7.92%and14.71%,the reinfection rate is6.82%and14.89%that With a history of smoking or not,There is not statistically significant between Differences groups. The reinfection rate is5.19%and15.52%that preoperative infection or not. The reinfection rate is4.40%and20.45%that Eustachian Tube clear or not, the reinfection rate is5.50%、26.92%thatmycotic infection or not, there is statistically significant between Differences groups. Theinfluence factors that difference was significant were analyzed by Logistic regressionanalysis.3. The significant factors in univariate analysis test with Logistic regression.P=0.076about Preoperative infection or not; P=0.007about the function ofeustachian tube; P=0.052with fungal infection. Factors will not statisticallysignificant rejected again, the remaining factors again on Logistic regressionanalysis. 4. Logistic regression analysis showed: significant difference of eustachian tubefunction group (P=0.004, OR=7.364), with significant differences in fungal infectiongroup (P=0.002, OR=8.456).Conclusion：Eustachian tube dysfunction, fungal infection are risk factors about reinfectionafter middle ear surgery.We should give adequate attention for such patients,and do agood job to those factors when preparing for the surgery and after treatment, We shoulddo a comprehensive treatment in operation as the center, to improve the clinicaltreatment effect.