J Korean Ophthalmol Soc.  2014 Aug;55(8):1121-1125.

Results of Cultured Silicone Tubes Inserted in Congenital Nasolacrimal Duct Obstruction

Affiliations
  • 1Department of Ophthalmology, Chonbuk National University Medical School, Jeonju, Korea. ahnmin@jbnu.ac.kr
  • 2Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea.

Abstract

PURPOSE
We evaluated cultured specimens from silicone tubes removed from patients with congenital nasolacrimal duct obstruction and determined the antibiotic sensitivities of the specimens.
METHODS
This study included 26 eyes of 22 patients who had received endonasal silicone tube intubation for congenital nasolacrimal duct obstruction. The removed silicone tubes were divided into canaliculus, lacrimal sac, nasolacrimal duct and nasal cavity parts according to insertion state. Then, bacteria and fungus cultures were performed and their antibiotic sensitivity was tested.
RESULTS
Bacteria culture rate was 80.8% in the canaliculus and the lacrimal sac, and 88.5% in the lacrimal duct, and the nasal cavity, which was not significantly different according to insertion site. Fungus culture rate was significantly higher in the nasal cavity than in the nasolacrimal duct and in the nasolacrimal duct than in the lacrimal sac and the canaliculus (p-value < 0.05). The species of cultured Gram-positive bacteria were in the following order: Staphylococcus aureus, Streptococcus pneumonia and coagulase negative Staphylococcus. Common species of cultured Gram-negative bacteria were Pseudomonas and Serratia marcescens. All six species of cultured fungi were Candida. Among 12 Staphylococcus aureus cultured, eight species showed resistance to methicillin (MRSA). In all patients, the symptoms and the signs of nasolacrimal duct obstruction improved after the tube removal.
CONCLUSIONS
Bacterial and fungal infection of the silicone tube in patients with congenital nasolacrimal duct obstruction does not appear to affect directly the outcome of silicone tube intubation. Further studies of bacterium and fungi in the nasolacrimal duct before silicone tube intubation are needed for determining the infection causing nasolacrimal duct obstruction.

Keyword

Antibiotics sensitivity; Congenital nasolacrimal duct obstruction; Culture; Silicone tube intubation

MeSH Terms

Bacteria
Candida
Coagulase
Fungi
Gram-Negative Bacteria
Gram-Positive Bacteria
Humans
Intubation
Methicillin
Nasal Cavity
Nasolacrimal Duct*
Pneumonia
Pseudomonas
Serratia marcescens
Silicones*
Staphylococcus
Staphylococcus aureus
Streptococcus
Coagulase
Methicillin
Silicones

Figure

  • Figure 1. Detailed portion of removed silicone tube (canaliculus, lacrimal sac, nasolacrimal duct, nasal cavity).


Reference

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