BACKGROUND To investigate characteristics of biofilm which is usually found in silicone tube for nasolacrimal duct surgery and can be the root of chronic bacterial infections eventually resulted in surgical failure. METHODS To form a biofilm, sterile silicone tube was placed in culture media of Staphylococcus aureus, Corynebacterium matruchotii, Pseudomonas aeruginosa, or Streptococcus pneumo...

Aim: To describe a new and simple bicanalicular silicone intubation technique, which can be used during dacryocystorhinostomy (DCR) surgery. Method: In this method, a lacrimal canula is used to pass the silicone tube through the lacrimal canaliculi. A 26-Gauge curved lacrimal canula is inserted into one end of a silicone tube with an inner diameter of 0.50 mm and outer diameter of 0.94 mm. The ...

Results The mean intubation time using IGI was shorter (p < 0.017) than that of IBRI and MCL in both endotracheal tubes (17.6 vs. 29.3 vs. 20.2 in conventional PVC tube; 14.6 vs. 27.4 vs. 19.9 in wire-reinforced silicone tube; sec). There were no significant (p > 0.05) differences between conventional PVC and wire-reinforced silicone tube for each intubation technique. The cumulative success ra...

OBJECTIVE To analyze the incidence of prolonged epiphora after maxillectomy according to transected nasolacrimal duct management technique, type of tumor, radiotherapy, and timing of tube removal and performance of dacryocystorhinotomy. DESIGN Retrospective medical record review. Settings University hospitals. PATIENTS We studied 89 patients (90 cases) who underwent nasolacrimal duct transe...

Objective- The objective was to assess local effect of brain derived neurotrophic factor (BDNF) on functional recovery of peripheral nerve in rat sciatic nerve transection model. Design- Experimental study. Animals- Sixty male healthy white Wistar rats Procedures- The animalswere randomized into four experimental groups of 15 animals each: In sham-operated group (SHAM), sciatic nerve was exp...

PURPOSE To compare the clinical effects of the single wide-diameter bicanalicular silicone tube and the double bicanalicular silicone tube in endonasal dacryocystorhinostomy (DCR) with canalicular trephinization for canalicular obstruction. METHODS We retrospectively reviewed the records of 121 patients with monocanalicular or common canalicular obstruction who had undergone endonasal DCR wit...

Objective-To evaluate effect of chitosan conduit for peripheral nerve regeneration using sciatic nerve transection model in rat Design- Experimental in vivo study. Animals- Sixty healthy male Wistar rats. Procedures-The rats were divided into four experimental groups (n=15) randomly. In sham group the left sciatic nerve was exposed through a gluteal muscle incision and after careful...

Silicone tubes are commonly used as a tool for long-term steroid treatment in animals. However, the release rates of steroids from these tubes have not yet been accurately determined. We measured the amounts of 4-nonylphenol (NP) remaining in tubes implanted in mice to obtain accurate release rates for original amounts of 20 or 1,000 microg NP in silicone tube implants. We achieved an accurate ...

PURPOSE To analyze the success rate and complications in patients with lacrimal obstruction submitted to surgeries. METHODS The data of patients operated in the "Hospital do Servidor Público Estadual of São Paulo" were analyzed. The lacrimal intubation was performed with a silicone tube, removed after 8 weeks. Surgeries were considered successful in those cases where patients had no postopera...

purpose: to evaluate the success rate of bicanalicular silicone tube intubation in children with congenital nasolacrimal duct obstruction (cnldo). methods: hospital records of 71 cases of bicanalicular silicone intubation in 62 children with cnldo were reviewed. success was defined as resolution of symptoms and signs such as epiphora and discharge 6 months after removal of the silicone tube. re...