Abstract
Objectives
1) Compare postoperative healing process between otorrhea and non-otorrhea group. 2) Evaluate the influence of MRSA and Pseudomonas infection on postoperative healing process. 3) Describe the affecting factors of postoperative reperforation and retroauricular abscess.
Methods
Retrospective chart review of 392 patients who were operated with canal wall up procedures by one surgeon and followed up at least over 12 months. The patients were divided into control and study groups; 106 non-otorrhea control group; 74 Pseudomonas infected group (P); 145 MRSA infected group (M); 61 other bacteria infected group (0). The following data were collected: 1) postoperative dressing frequency and duration; 2) the duration of oral antibiotics and intravenous antibitics use; 3) the incidence of postoperative otorrhea; 4) the incidence of reperforation and retroauricular abscess. The Mantel-Haenszel test and ANOVA test were used for statistical analysis.
Results
Statistical analysis indicates a significant difference in frequency and duration of postoperative dressing and oral antibiotics using peroid (p<0.01). Nevertheless, there were no correlations in postoperative otorrhea and reperforation between the infected group and non-otorreha group (p>0.05). The incidence of retroauricular abscess was high in the antibiotic-changed group (p<0.01).
Conclusions
MRSA and Pseudomonas infection in chronic otitis media indicated a significant difference in the duration of postoperative follow-up and the antibiotic-using period, compared with the control group. The isolated MRSA or Pseudomonas infection after surgery had more incidence of a retroauricular abscess.
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