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tympanic membrane

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https://www.readbyqxmd.com/read/29241230/influence-of-repetitive-diving-in-saltwater-on-pressure-equalization-and-eustachian-tube-function-in-recreational-scuba-divers
#1
Moritz F Meyer, Manuela Boor, Stefanie Jansen, Eberhard D Pracht, Moritz Felsch, Heinz D Klünter, Karl-Bernd Hüttenbrink, Dirk Beutner, Maria Grosheva
INTRODUCTION: We investigated in a prospective, observational trial the feasibility of using the Eustachian tube function test (ETFT) to measure the effect of repetitive pressure exposure during open seawater dives on Eustachian tube function. METHODS: The study included 28 adult divers during six consecutive days of diving in the Red Sea. Participants underwent otoscopy and ETFT before the first dive, between each dive and after the last dive. ETFT included regular tympanometry (R-tymp), tympanometry after Valsalva (V-tymp) and after swallowing (S-tymp)...
December 2017: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/29240312/garden-terror-case-series-of-twenty-eight-serious-ear-injuries-caused-by-yucca-plants
#2
Maria Vartanyan, Kumiko Orimoto, Adrian Dragovic, Carmel Crock, Michael Dobson, Stephen O'Leary
The yucca plant (genus Yucca, family Asparagaceae, subfamily Agavoideae) is a ubiquitous plant whose long and sharp leaf spines (Fig 1) are accountable for an increasing number of ear injuries presenting to the Emergency Department of our specialised tertiary hospital. Whereas most cases presented as easy-to-diagnose traumatic tympanic membrane perforations (TMP) which healed quickly, 4 cases were complicated by perilymphatic fistula (PLF), and these presented a diagnostic dilemma that resulted in late diagnoses...
December 14, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/29239860/reference-intervals-for-the-evoked-tympanic-membrane-displacement-measurement-a-non-invasive-measure-of-intracranial-pressure
#3
Cherith M Campbell-Bell, Anthony A Birch, Dario Vignali, Diederik O Bulters, Robert J Marchbanks
OBJECTIVE Evoked tympanic membrane displacement (TMD) is a non-invasive technique for assessing intracranial pressure (ICP). The aim of this study was to define reference intervals (RIs) in the healthy population. Approach Measurements were made in 154 healthy adults. Results were quantified by Vm which is the most frequently described TMD measurement. Distributions were determined for sitting and supine posture. Differences between right and left ears were explored using a Wilcoxon signed-rank test...
December 14, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/29232394/external-auditory-exostoses-in-the-xuchang-and-xujiayao-human-remains-patterns-and-implications-among-eastern-eurasian-middle-and-late-pleistocene-crania
#4
Erik Trinkaus, Xiu-Jie Wu
In the context of Middle and Late Pleistocene eastern Eurasian human crania, the external auditory exostoses (EAE) of the late archaic Xuchang 1 and 2 and the Xujiayao 15 early Late Pleistocene human temporal bones are described. Xujiayao 15 has small EAE (Grade 1), Xuchang 1 presents bilateral medium EAE (Grade 2), and Xuchang 2 exhibits bilaterally large EAE (Grade 3), especially on the right side. These cranial remains join the other eastern Eurasian later Pleistocene humans in providing frequencies of 61% (N = 18) and 58% (N = 12) respectively for archaic and early modern human samples...
2017: PloS One
https://www.readbyqxmd.com/read/29229399/the-malleus-cap-anatomic-description-of-cartilage-of-the-lateral-process-of-the-malleus
#5
Elias Michaelides, Ankit Kansal, Sara Rutter, Christopher A Schutt
PURPOSE: To anatomically describe a cartilaginous cap attached to the lateral process of the malleus. STUDY DESIGN: Histologic and gross anatomic review. METHODS: Twenty temporal bones were histologically reviewed. The anatomical relationship between the tympanic membrane and malleus was then defined at the level of the lateral process of the malleus and the long process of the malleus. Separately, gross evaluation of these levels at the macroscopic level was undertaken through endoscopic imaging in five subjects...
October 25, 2017: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/29224762/outcomes-of-tympanoplasty-in-children-with-down-syndrome
#6
Saied Ghadersohi, Jonathan B Ida, Bharat Bhushan, Kathleen R Billings
INTRODUCTION: The prevalence of chronic otitis media with effusion (COME), and Eustachian tube dysfunction (ETD) is high in Down syndrome (DS) patients. This often necessitates multiple tympanostomy tube (TT) placements resulting in a higher rate of persistent tympanic membrane (TM) perforation requiring tympanoplasty for repair. OBJECTIVES: To assess risk factors for persistent perforation and outcomes of tympanoplasty in DS patients. METHODS: Retrospective case series of 91 ears in 69 DS patients with TM perforations, who were either observed or underwent tympanoplasty...
December 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/29224754/prevalence-of-chronic-ear-disease-among-hiv-children-in-sub-saharan-africa
#7
David C Ianacone, Alden F Smith, Margaretha L Casselbrant, Robbert J H Ensink, Farrel Buchinsky, Abebe Melaku, Glenn Isaacson
OBJECTIVES: To determine the prevalence of chronic ear disease in HIV+, highly active anti-retroviral therapy (HAART)-treated children and compare this to the prevalence in healthy children of similar age living in a similar setting. INTRODUCTION: From previous clinical work in Ethiopia, we suspected that chronic middle ear disease was common both in the general pediatric population and especially among children with HIV/AIDS. Few studies have examined the prevalence of chronic ear disease in HIV + children, particularly in those treated with HAART...
December 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/29223643/povidone-iodine-soaked-gelfoam-for-the-treatment-of-recalcitrant-otomycosis%C3%A2-%C3%A2-our-experiences-at-a-tertiary-care-teaching-hospital-of-eastern-india
#8
S K Swain, I C Behera, M C Sahu, A Das
INTRODUCTION: Otomycosis is a common clinical condition seen in outpatient department of otorhinolaryngology. The treatment of the otomycosis is also very simple. However, sometime it is difficult to treat otomycosis along with mastoid cavity, chronic suppurative otitis media, immunocompromised patient, etc. with conventional treatment, called recalcitrant otomycosis. Here, we describe a technique of treatment for recalcitrant otomycosis. MATERIALS AND METHODS: This is a prospective observational study/clinical trial carried out on 44 patients of recalcitrant otomycosis...
December 6, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/29210944/stapes-release-in-tympanosclerosis
#9
Es-Hak Bedri, Nebiat Teferi, Miriam Redleaf
: Tympanosclerosis in the middle ear space is common in Ethiopia and often involves the ossicles and particularly the stapes. Ear operations in Ethiopia are relatively expensive in this country of limited medical resources and a low average living wage. In this setting, 2-stage operations using prostheses become prohibitively expensive. Therefore, the recommended 2-stage approach for tympanic membrane perforation with tympanosclerosis and stapes fixation is impractical for Ethiopia.We present a series of 67 patients who had a single stage tympanoplasty, removal of tympanosclerosis from the stapes suprastructure, and ossicular chain reconstruction using ossicular interposition...
November 28, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29201373/free-anterolateral-thigh-full-thickness-skin-flap-with-vascularized-lateral-femoral-cutaneous-nerve-for-the-reconstruction-of-facial-nerve-and-external-auditory-canal-after-the-resection-of-facial-nerve-schwannoma
#10
Ryo Karakawa, Mitsunaga Narushima, Shinya Ogishima, Hisako Hara, Shotaro Karino, Takuya Iida, Akinobu Kakigi, Isao Koshima
The complex reconstruction of nerves and soft tissue in the head and neck region is still challenging, especially in cases requiring external auditory canal reconstruction with facial nerve reconstruction. We report a case of left facial schwannoma extending into the external auditory canal beyond the tympanic membrane with facial paralysis in which the reconstruction of both the facial nerve and external auditory canal was successfully performed using an anterolateral thigh flap as a super-thin full-thickness skin flap, including vascularized lateral femoral cutaneous nerve...
2017: SAGE Open Medical Case Reports
https://www.readbyqxmd.com/read/29195482/the-effects-of-varying-tympanic-membrane-material-properties-on-human-middle-ear-sound-transmission-in-a-three-dimensional-finite-element-model
#11
Kevin N O'Connor, Hongxue Cai, Sunil Puria
An anatomically based three-dimensional finite-element human middle-ear (ME) model is used to test the sensitivity of ME sound transmission to tympanic-membrane (TM) material properties. The baseline properties produce responses comparable to published measurements of ear-canal input impedance and power reflectance, stapes velocity normalized by ear-canal pressure (PEC), and middle-ear pressure gain (MEG), i.e., cochlear-vestibule pressure (PV) normalized by PEC. The mass, Young's modulus (ETM), and shear modulus (GTM) of the TM are varied, independently and in combination, over a wide range of values, with soft and bony TM-annulus boundary conditions...
November 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/29194226/success-rate-of-tympanic-membrane-closure-in-the-elderly-compared-to-younger-adults
#12
Casper Jolink, Max R Zwemstra, Maarten J F de Wolf, Fenna A Ebbens, Erik van Spronsen
OBJECTIVE: To assess the effectiveness and safety of tympanoplasty in elderly patients and the effect of frailty on the results. STUDY DESIGN: Retrospective chart review. SETTING: Tertiary referral center. PATIENTS: Thirty-one ears in 30 patients aged 65 years and older were included and matched with 31 controls, based on the type of surgery, of a pool of 133 patients aged 35 to 55 years. INTERVENTION: Therapeutic...
November 30, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29192624/role-of-trichloroacetic-acid-and-gelfoam-in-closure-of-tympanic-membrane-perforations
#13
M Singh, M Kaur, B Singh, K Singh, A Singh, A Kaur
OBJECTIVE: The aim of the study was to study the closure of dry central type of tympanic membrane perforations by chemical cautery and improvement of hearing, to analyse the effect of Gelfoam on nonhealing small tympanic membrane perforations, and to examine the relevance of conservative means of closure of tympanic membrane perforations as an office procedure. MATERIALS AND METHODS: In this study, 100 patients attending the outpatient department were enrolled. Cautery of perforation margin was carried out with 50% trichloroacetic acid (TCA)...
October 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29190487/minimally-invasive-laser-vibrometry-mivib-with-a-floating-mass-transducer-a-new-method-for-objective-evaluation-of-the-middle-ear-demonstrated-on-stapes-fixation
#14
Jeremy Wales, Kilian Gladiné, Paul Van de Heyning, Vedat Topsakal, Magnus von Unge, Joris Dirckx
Ossicular fixation through otosclerosis, chronic otitis media and other pathologies, especially tympanosclerosis, are treated by surgery if hearing aids fail as an alternative. However, the best hearing outcome is often based on knowledge of the degree and location of the fixation. Objective methods to quantify the degree and position of the fixation are largely lacking. Laser vibrometry is a known method to detect ossicular fixation but clinical applicability remains limited. A new method, minimally invasive laser vibrometry (MIVIB), is presented to quantify ossicle mobility using laser vibrometry measurement through the ear canal after elevating the tympanic membrane, thus making the method feasible in minimally invasive explorative surgery...
November 20, 2017: Hearing Research
https://www.readbyqxmd.com/read/29186936/endoscope-assisted-cochlear-implantation
#15
Enis Alpin Güneri, Yüksel Olgun
Objectives: Our aim was to present our endoscope-assisted cochlear implantation (CI) technique, in which the middle ear landmarks were identified through the facial recess exposure by using an endoscopic view without elevating the tympanic annulus. The secondary goal was to assess whether the situation of difficult surgical exposure could be predicted by evaluating preoperative axial computed tomography (CT) examinations. Methods: CT examinations and surgical outcomes of endoscope-assisted CI surgeries were analyzed...
December 1, 2017: Clinical and Experimental Otorhinolaryngology
https://www.readbyqxmd.com/read/29165750/our-experience-in-the-management-of-csf-otorrhea-a-transmastoid-approach-with-middle-ear-cavity-obliteration-and-a-middle-cranial-fossa-approach
#16
Asli Cakir Cetin, Nuri Karabay, Enis Alpin Guneri
In this report, we present two cases of patients with cerebrospinal fluid (CSF) otorrhea who underwent surgical repair through either a transmastoid or middle cranial fossa approach. In our first case, a 34-year-old male after head trauma with conductive hearing loss and a House-Brackmann grade 2 facial palsy was found to have a soft tissue mass protruding through his right tympanic membrane. Radiological examination revealed a wide tegmen tympani defect. He underwent surgery via a transmastoid approach with repair of the defect and blind sac closure of the external auditory canal after middle ear cavity obliteration...
November 1, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/29158869/otitis-media-with-effusion-and-atopy-is-there-a-causal-relationship
#17
REVIEW
Mario E Zernotti, Ruby Pawankar, Ignacio Ansotegui, Hector Badellino, Juan Sebastian Croce, Elham Hossny, Motohiro Ebisawa, Nelson Rosario, Mario Sanchez Borges, Yuan Zhang, Luo Zhang
Otitis Media with Effusion (OME) is an inflammatory condition of the middle ear cleft, acute or chronic, with collection of fluid in the middle ear with an intact tympanic membrane. It is a very common disease in childhood, the most frequent cause of hearing loss in childhood and often requiring surgery. OME is called chronic when the fluid in the middle ear persists for more than three months or when the episodes recur six or more times in one year. The current article covers various aspects of OME including definition, epidemiology...
2017: World Allergy Organization Journal
https://www.readbyqxmd.com/read/29157881/deformation-of-avian-middle-ear-structures-under-static-pressure-loads-and-potential-regulation-mechanisms
#18
Raf Claes, Pieter G G Muyshondt, Joris J J Dirckx, Peter Aerts
Static pressure changes can alter the configuration and mechanical behavior of the chain of ossicles, which may affect the acoustic transfer function. In mammals, the Eustachian tube plays an important role in restoring ambient middle ear pressure, hence restoring the acoustic transfer function and excluding barotrauma of the middle and inner ear. Ambient pressure fluctuations can be potentially extreme in birds and due to the simple structure of the avian middle ear (one ossicle, one muscle), regulation of the middle ear pressure via reflexive opening of the pharyngotympanic tube appears all the more important...
November 7, 2017: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/29151384/endoscopic-ear-surgery-in-the-ear-camp-setting-forward-thinking-or-folly
#19
M P A Clark
BACKGROUND: Endoscopic ear surgery is becoming an accepted technique in otological surgery, in the management of chronic otitis media. METHODS: The technique was introduced to the humanitarian care setting of an ear camp in Nepal to consider the appropriateness of the technique in this type of clinical setting. RESULTS: Fifteen cases of myringoplasty were successfully completed. CONCLUSION: The apparent advantages of the endoscopic approach over the traditional microscopic one were the ease of transporting the equipment and the optimal view obtained of the tympanic membrane...
November 20, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/29148198/ear-nose-and-throat-surgery-all-you-need-to-know-about-the-surgical-approach-to-the-management-of-middle-ear-effusions-in-australian-indigenous-and-non-indigenous-children
#20
REVIEW
Kelvin Kong, Francis J Lannigan, Peter S Morris, Amanda J Leach, Stephen J O'Leary
Otitis media (OM) is a common condition in Australia. It represents a spectrum of diseases from otitis media with effusion (OME) to chronic suppurative otitis media. For all the OM diagnoses, Australian Indigenous children have higher rates of early onset, severe and persistent disease. OME is the most common form of OM and often occurs after an upper respiratory tract infection. It can be difficult to diagnose (and often goes unrecognised). Hearing loss is the most important complication. The middle-ear effusion impedes the movement of the tympanic membrane and causes a conductive hearing loss of around 25 dB...
November 2017: Journal of Paediatrics and Child Health
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