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The bacteriologic infection of removed silicone tubes after dacryocystorhinostomy and the correlation with postoperative clinical features 1. Sung-eun Kim¹ ¹Severance Hospital, Yonsei University College of Medicine, Seoul, Korea Purpose: To investigate the bacteriologic infection of removed silicone tubes after dacryocystorhinostomy and assess the correlation between the culture results and postoperative clinical features Methods: Thirty-nine eyes of 33 patients were operated for nasolacrimal duct obstruction with external or endoscopic dacryocystorhinostomy. The removed silicone tubes were cultured. Preoperative canalicular stenosis and nasal septal hypertrophy, postoperative inflammation, endoscopic revision or reoperation, and the extubation date were reviewed. Correlations of the results of bacterial culture and clinical features were statistically verified. Results & Conclusons: Culture gave positive results in 37 eyes (94.9%). 73.1% were gram-positive bacteria, 23.1% gram-negative bacteria, and 3.8% fungi. Of the gram-positive organisms 73.9% were Staphylococcus aureus. The most of the gram-negative organisms was Pseudomonas aeruginosa found in 5 eyes. The silicone tubes were removed at mean of 6.6months. The later the extubation was done, the more cases were associated with the infection of Pseudomonas aeruginosa (p=0.004) and postoperative inflammation (p<0.001). Four eyes of 5 cases with Pseudomonas infection had history of endoscopic revision or reoperation, which showed statistically significant correlation (p=0.017). Preoperative canalicular stenosis and nasal problems had no correlation with specific infection or postoperative revision (p>0.05). |
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