RESUMO
OBJECTIVE: Assess the feasibility of the use of a life-size model for ESS to perform balloon catheter dilatation of the paranasal sinus ostia. STUDY DESIGN AND SETTING: Four validated sinus models were enrolled in this study. One experienced endoscopic surgeon performed all the dilatations of the paranasal sinus ostia. We used the Relieva Sinus Balloon Catheter System (Acclarent, Inc, Menlo Park, CA), and its described technique for fluoroscopic guided sinuplasty. RESULTS: Twenty-four ostia were available. All sinuses were successfully catheterized and dilated. The total fluoroscopic time was 18 minutes and 8 seconds (mean, 45.3 seconds per sinus) and the total procedure time was 50 minutes and 56 seconds (mean, 2 minutes and 7 seconds per sinus). CONCLUSION: It was feasible to perform a successful dilatation of the 24 available sinus ostia of the models: 8 maxillary, frontal and sphenoid. No major technical difficulties were encountered. SIGNIFICANCE: This model could help surgeons in the training of sinus ostia balloon dilatation.
Assuntos
Cateterismo , Modelos Anatômicos , Cateterismo/métodos , Endoscopia , Estudos de Viabilidade , Fluoroscopia , HumanosRESUMO
OBJECTIVES: To describe a novel portable laptop-based image-guidance system and its preliminary navigational results. METHODS: An optic-based, specially developed navigational system and a life-size endoscopic sinus anatomic model were used. The model was submitted to computer tomography (CT), and predefined anatomic landmarks were used to test the image-guidance accuracy according to the real model. RESULTS: All anatomic landmarks were identified by the image-guidance system and all matched with endoscopic or eye views. CONCLUSIONS: This novel compact navigation device was shown to be fast and reliable. A larger series, involving more models, cadavers, and patients, with the evaluation of multiple anatomic points needs to be done before we can reliably determine the overall accuracy of this novel device. However, this new system is promising, and in the future it can be part of the armamentarium of otolaryngologists' personal equipment in order to perform low-cost image-guided surgeries in different places with the same equipment.