نتایج جستجو برای: tympanic membrane perforation
تعداد نتایج: 406721 فیلتر نتایج به سال:
Background: Tympanic membrane perforation as a sign of different otologic disorders have multiple causes, for example trauma .Traumatic perforations heal spontaneously in most cases but in large and stable perforation otolarngologist intervention is necessary . In the stable perforation of tympanic membrane , if there isn’t infection in the tympanic cavity , the paper patch or myringoplasty ma...
background: with respect to physical relations in force and pressure, we hypothesized that the prevalence of traumatic tympanic membrane perforation in patients with a patulous eustachian tube is greater than normal, because in eustachian tube patency, the internal air pressure of the middle ear will not increase after compression, subsequent to trauma. therefore the force upon the tympanic mem...
Background: With respect to physical relations in force and pressure, we hypothesized that the prevalence of traumatic tympanic membrane perforation in patients with a patulous Eustachian tube is greater than normal, because in Eustachian tube patency, the internal air pressure of the middle ear will not increase after compression, subsequent to trauma. Therefore the force upon the tympanic...
introduction: tympanoplasty is a standard procedure to repair tympanic membrane perforation. the aim of this study is to evaluate the results of tympanoplasty (hearing improvement and tympanic membrane closure rate) in patients suffering from chronic perforation of the tympanic membrane by considering the prognostic factors. materials and methods: in a prospective study, based on the results o...
The migration of squamous epithelium of external ear through a tympanic membrane perforation into the middle ear forms a cholesteatoma. But it is extremely a rare condition to observe extensive cholesteatoma on the medial surface of tympanic membrane with perforation. This condition is termed tympanic membrane cholesteatoma (TMC). We herein present an exceptional case of extensive TMC with marg...
introduction: the use of cartilage as a grafting material has been advocated in cases where there is a high risk of graft failure, such as subtotal perforations, adhesive processes, and residual defects after primary tympanoplasties. the purpose of this study was to compare the graft acceptance rates and auditory outcomes of cartilage tympanoplasty operations using a palisade technique with tho...
UNLABELLED The most common etiologies of tympanic membrane perforation are infections and trauma. OBJECTIVE The objective of the present study was to assess the healing of traumatic tympanic membrane perforation in rats. METHODS The tympanic membrane from male Wistar rats was perforated in the anterior and posterior portions to the handle of the malleus. Five tympanic membranes were evaluat...
Introduction: Tympanoplasty is a standard procedure to repair tympanic membrane perforation. The aim of this study is to evaluate the results of tympanoplasty (hearing improvement and tympanic membrane closure rate) in patients suffering from chronic perforation of the tympanic membrane by considering the prognostic factors. Materials and Methods: In a prospective study, based on the results ...
OBJECTIVE To identify factors that significantly influence myringoplasty success. METHODS A retrospective study was performed of all adults and children who underwent myringoplasty from January 2005 to January 2010 in a teaching hospital. Outcome measures were tympanic membrane perforation closure and air-bone gap closure to within 20 dB HL. The factors assessed were the surgeon grade, pre-op...
which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Correspondence First of all, we would like to thank you for your interesting comments to our study. Our study was concerning to the application of synthetic bio-material patch. As your recommendation, natural healing rate of acute tympanic membrane perforati...
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