"Mucosal pocket" myringoplasty: a modification of underlay technique for anterior or subtotal perforations.

Purpose: Chronic otitis media surgery is the most common procedure in otology in developing countries. Subtotal and total tympanic membrane (TM) perforation with inadequate anterior remnant is associated with higher rate of graft failure. It was the goal of this study to test the anatomical and functional outcomes of a modified underlay myringoplasty technique.

Numerical analysis of micro- and nano-particle deposition in a realistic human upper airway.

A computational model was developed for studying the flow field and particle deposition in a human upper airway system, including: nasal cavity, nasopharynx, oropharynx, larynx and trachea. A series of coronal CT scan images of a 24 year old woman was used to construct the 3D model. The Lagrangian and Eulerian approaches were used, respectively, to find the trajectories of micro-particles and concentration of nano-particles.

Frequency of sensory neural hearing loss in major Beta-thalassemias in southern iran.

Objective: The thalassemias are among the most common genetic disorders worldwide, occurring more frequently in the Mediterranean region. The aim of this study was to determined frequency of sensory-neural hearing loss in major ß- thalassemias transfusion dependent patients in south of Iran.

Methods: A cross sectional study on 308 cases of major beta-thalassemia patients referring to Thalassemia Center of Shiraz University of Medical Sciences between 2006-2007 years.

IgM, IgG Serum Levels and Lymphocytes Count before and after Adenotonsillectomy.

Background: Tonsils and adenoids are involved in both local immunity and immune surveillance for the development of immune defence mechanisms. A number of investigators have found decreased immunoglobulin levels after adenotonsillectomy while others have failed to find significant changes. The effects of adenotonsillectomy on the cellular immunity of children have not been investigated extensively.

Intraoperative findings in revision chronic otitis media surgery.

In this study, we reviewed the surgical findings in a series of revision tympanomastoidectomy to determine the most common causes of failure in chronic otitis media surgery. The intraoperative findings at revision mastoidectomy with tympanoplasty of 116 patients were analyzed. The most common sites of pathologic tissue at revision surgery (with cholesteatoma and/ or granulation tissue) were unexenterated cells of the sinodural angle.

Application and usage of tactile aid in Iran.

Background: Most deaf and severe to profound sensorineural hearing loss patients are incapable to communicate well because of a lack of receiving sound signals. Cochlear implant is one of the effective measures, which has been of great help to the deaf. Up to now, more than 1000 cochlear implants have been accomplished successfully in Iran.