Introduction Coarse wavelength-division multiplexing (CWDM) is becoming increasingly important for optical access applications [1,2]. It allows to deploy low-cost shortreach links with appreciable capacity using a 20-nm wavelength grid between 1271 nm and 1611 nm. Recent research has pushed per-channel CWDM bit rates to 10 Gb/s with transmission distances of more than 40 km using directly modul...

Chronic otitis media (COM) is completely treated with a single procedure in most patients but may require multiple surgeries in some cases. The main goals of open cavity mastoidectomy are to completely eradicate the disease, create a large enough meatus for examination and mastoid air cells, and provide a self-cleaning epithelized dry cavity, and achieve maximum hearing. In this report, we pres...

Introduction The objectives of mastoidectomy in cholesteatoma are a disease-free and dry ear, the prevention of recurrent disease, and the maintenance of hearing or the possibility to reconstruct an affected hearing mechanism. Canal wall down mastoidectomy has been traditionally used to achieve those goals with greater or lesser degrees of success. However, canal wall down is an aggressive appr...

BACKGROUND: Canal wall down and canal wall up mastoidectomy represent two surgical approaches to middle ear cleft pathology. Very few studies have examined the effects of these procedures both on the patients' well being and on the resources needed to maintain that state. In this study the authors report the outpatient attendance pattern of canal wall down mastoidectomy patients METHODS: This i...

OBJECTIVE To analyse patients with cholesteatoma undergoing canal wall down mastoidectomy together with ossicular reconstruction with a titanium prosthesis, in order to identify factors associated with hearing outcomes. STUDY DESIGN Retrospective review of 97 cases undergoing single-stage surgical management. METHODS All patients underwent canal wall down mastoidectomy. Kurz titanium ossicu...

Background: Hearing loss due to chronic otitis media is common. The purpose of this study was to evaluate hearing before and after canal wall up, canal wall down mastoidectomy and tympanoplasty. Methods: From 2004 to 2007, all patients with chronic otitis media who were admitted at the Department of Otolaryngology, Babol Medical University were studied. For 126 patients' canal wall up, canal wa...

INTRODUCTION This study was designed to evaluate the usefulness of mastoid cavity obliteration with combined bone pâté and Palva flap in the prevention of problematic mastoid cavities after canal wall down mastoidectomy. MATERIALS AND METHODS In a prospective longitudinal study with a mean follow-up of 28 months conducted between 2008-2012, a series of 56 ears in 48 patients with chronic otit...