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https://www.readbyqxmd.com/read/28426992/factors-affecting-sound-energy-absorbance-in-acute-otitis-media-model-of-chinchilla
#1
Xiying Guan, Thomas W Seale, Rong Z Gan
Acute otitis media (AOM) is a rapid-onset infection of the middle ear which results in middle ear pressure (MEP), middle ear effusion (MEE), and structural changes in middle ear tissues. Previous studies from our laboratory have identified that MEP, MEE, and middle ear structural changes are three factors affecting tympanic membrane (TM) mobility and hearing levels (Guan et al., 2014, 2013). Sound energy reflectance or absorbance (EA) is a diagnostic tool increasingly used in clinical settings for the identification of middle ear diseases...
April 10, 2017: Hearing Research
https://www.readbyqxmd.com/read/28425579/myringoplasty-outcomes-from-the-swedish-national-quality-registry
#2
Malin Berglund, Rut Florentzson, Mattias Fransson, Malou Hultcrantz, Per O Eriksson, Erling Englund, Eva Westman
OBJECTIVES/HYPOTHESIS: Data from patients registered for myringoplasty during 2002 to 2012 in the Swedish National Quality Registry for Myringoplasty. STUDY DESIGN: Both conventional myringoplasty and fat-graft techniques were used aimed at healing the tympanic membrane in noninfected ears. METHODS: Analysis was performed on data in a national database collected from 32 ear, nose, and throat clinics. Surgical procedures and outcomes, and patient satisfaction from a questionnaire were studied...
April 20, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28420020/-harvesting-grafts-for-reconstruction-of-the-tympanic-membrane
#3
Jan Peter Thomas, Alexander Siedhoff, Christian Wrobel, Tobias Dombrowski, Stefan Dazert
No abstract text is available yet for this article.
March 2017: Laryngo- Rhino- Otologie
https://www.readbyqxmd.com/read/28417109/intractable-methicillin-resistant-staphylococcus-aureus-otorrhea-with-silicone-impression-in-the-middle-ear
#4
Eun Kyung Jung, Chul Ho Jang, Jong Yuap Seong, Yong Beom Cho
We report a case of methicillin-resistant Staphylococcus aureus (MRSA) otorrhea with impression material of hearing aid in the middle ear. The patient had chronic otitis media in the right ear with sensorineural hearing loss in both ears. The silicone flowed into the middle ear through a tympanic membrane perforation during the process of making an ear mold. Several days after hearing aid fitting, the patient had severe otalgia, intractable otorrhea, aggravated hearing loss, and dizziness. The pus culture and sensitivity test revealed MRSA...
April 2017: Journal of Audiology & Otology
https://www.readbyqxmd.com/read/28417107/analysis-of-effect-of-eggshell-membrane-patching-for-moderate-to-large-traumatic-tympanic-membrane-perforation
#5
Jong Yoon Jung, Hee-Chul Yun, Tae-Min Kim, Jae Woo Joo, In Sik Song, Yoon Chan Rah, Jiwon Chang, Gi Jung Im, June Choi
BACKGROUND AND OBJECTIVES: To evaluate the effect of eggshell membrane (ESM) patching for tympanic membrane (TM) perforation, and to investigate correlations between healing time and age, gender, patching time, perforation size, and perforation location. SUBJECTS AND METHODS: One hundred and seventy-five patients diagnosed with traumatic TM perforation at the Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, between January 2008 and October 2013...
April 2017: Journal of Audiology & Otology
https://www.readbyqxmd.com/read/28416346/bilateral-spontaneous-symptomatic-temporomandibular-joint-herniation-into-the-external-auditory-canal-a-case-report-and-literature-review
#6
Yong Won Lee, Yong Ho Park
Spontaneous temporomandibular joint (TMJ) herniation is the entity of protrusion of the retrodiscal contents of the TMJ into the external auditory canal (EAC) through a persistent Huschke's foramen. There have been a number of reports of spontaneous TMJ herniation, but there are no reports of bilateral symptomatic TMJ herniation. We report a case of a 70-year-old man who complained of a crunching sound in both ears during mastication. Examination showed bulging from the anterosuperior wall of the EAC on each side when the patient opened his mouth, which pushed the tympanic membrane medially...
April 14, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28414722/re-visiting-the-tympanic-membrane-vicinity-as-core-body-temperature-measurement-site
#7
Wui Keat Yeoh, Jason Kai Wei Lee, Hsueh Yee Lim, Chee Wee Gan, Wenyu Liang, Kok Kiong Tan
Core body temperature (CBT) is an important and commonly used indicator of human health and endurance performance. A rise in baseline CBT can be attributed to an onset of flu, infection or even thermoregulatory failure when it becomes excessive. Sites which have been used for measurement of CBT include the pulmonary artery, the esophagus, the rectum and the tympanic membrane. Among them, the tympanic membrane is an attractive measurement site for CBT due to its unobtrusive nature and ease of measurement facilitated, especially when continuous CBT measurements are needed for monitoring such as during military, occupational and sporting settings...
2017: PloS One
https://www.readbyqxmd.com/read/28393052/comparison-of-temporalis-fascia-and-full-thickness-cartilage-palisades-in-type-i-underlay-tympanoplasty-for-large-subtotal-perforations
#8
Pradeep Pradhan, Abhimanyu Anant, Vellore-Pattabhiram Venkatachalam
INTRODUCTION: To demonstrate surgical techniques and to compare the anatomical and functional outcomes between temporalis fascia and cartilage palisade grafting in type-I underlay tympanoplasty in patients with large/subtotal perforation. MATERIALS AND METHODS: Temporalis fascia and cartilage palisade grafting were conducted in Group A and Group B, respectively, each containing 30 patients with large/subtotal perforations. Pure tone audiogram (PTA) and speech reception thresholds (SRT) were performed preoperatively and at each postoperative visit; i...
March 2017: Iranian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28390601/double-handed-endoscopic-myringoplasty-with-a-holding-system-in-children-preliminary-observations
#9
L O Redaelli De Zinis, M Berlucchi, N Nassif
OBJECTIVES: Endoscopic transcanal myringoplasty is a newly-introduced technique for reconstruction of tympanic membrane perforation that offers the advantage to obviate postauricular incision. The objective of this study was to evaluate the feasibility of a double-handed endoscope holder transcanal myringoplasty in children. This technique permits bimanual execution of the procedure and allows the surgeon to overcome the two significant issues of single-handed endoscope surgery, i.e. easy domination of a bloody field and smooth introduction of the graft...
May 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28375378/in-vivo-3d-imaging-of-the-human-tympanic-membrane-using-a-wide-field-diagonal-scanning-optical-coherence-tomography-probe
#10
Kibeom Park, Nam Hyun Cho, Jeong Hun Jang, Sang Heun Lee, Pilun Kim, Mansik Jeon, Stephen A Boppart, Jeehyun Kim, Woonggyu Jung
A wide-field optical coherence tomography (OCT) probe was developed that adapts a diagonal-scanning scheme for three-dimensional (3D) in vivo imaging of the human tympanic membrane. The probe consists of a relay lens to enhance the lateral scanning range up to 7 mm. Motion artifacts that occur with the use of handheld probes were found to be decreased owing to the diagonal-scanning pattern, which crosses the center of the sample to facilitate entire 3D scans. 3D images could be constructed from a small number of two-dimensional OCT images acquired using the diagonal-scanning technique...
March 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/28356138/can-floseal%C3%A2-be-applied-safely-during-otologic-surgery-assessment-of-ototoxicity-in-a-chinchilla-animal-model
#11
Carol Nhan, Aren Bezdjian, Abdullah Alarfaj, Sam J Daniel
BACKGROUND: In otologic surgery good visualization is paramount, and patients with bleeding diatheses or who need to be anti-coagulated can present a significant challenge. Here, we determine whether Floseal™, a hemostatic matrix, is ototoxic in a validated animal model. METHODS: Nine chinchillas housed in the animal care facilities of the Montreal Children's Hospital Research Institute were used for the study. After a myringotomy incision was made in each tympanic membrane, baseline auditory brainstem response measurements were performed at 8, 20, and 25 kHz...
March 29, 2017: Journal of Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28349759/capillary-hemangioma-of-the-tympanic-membrane
#12
Matthew G Crowson, Calhoun D Cunningham
No abstract text is available yet for this article.
March 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28348042/hearing-on-the-fly-the-effects-of-wing-position-on-noctuid-moth-hearing
#13
Shira D Gordon, Elizabeth Klenschi, James F C Windmill
The ear of the noctuid moth has only two auditory neurons, A1 and A2, which function in detecting predatory bats. However, the noctuid's ears are located on the thorax behind the wings. Therefore, since these moths need to hear during flight, it was hypothesized that wing position may affect their hearing. The wing was fixed in three different positions: up, flat, and down. An additional subset of animals was measured with freely moving wings. In order to negate any possible acoustic shadowing or diffractive effects, all wings were snipped, leaving the proximal most portion and the wing hinge intact...
March 27, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28314420/sport-injuries-of-the-ear-and-temporal-bone
#14
REVIEW
L Mariel Osetinsky, Grant S Hamilton, Matthew L Carlson
In cases of head trauma, the ear should be evaluated in all of its components. A good understanding of otologic and skull base anatomy enables a thorough trauma assessment of this complex anatomic region. Auricular laceration, abrasion, avulsion, hematoma, frostbite, otitis externa, exostosis, tympanic membrane perforation, ossicular discontinuity, perilymphatic fistula, labyrinthine concussion, temporal bone fracture, facial nerve paresis, and sensorineural hearing loss are a few of the more common otologic injuries seen in active patients...
April 2017: Clinics in Sports Medicine
https://www.readbyqxmd.com/read/28306652/tests-of-eustachian-tube-function-the-effect-of-testing-technique-on-tube-opening-in-healthy-ears
#15
Matthew E Smith, Andrew J C Blythe, Charlotte Baker, Charlie C Zou, Peter J A Hutchinson, James R Tysome
OBJECTIVE: There is no agreement on the best clinical test for Eustachian tube (ET) dysfunction. Numerous tests have been developed to detect ET opening, and all require a patient to perform a Valsalva, Toynbee or sniff maneuver, or to swallow on demand. We aimed to characterize existing tests of ET function in healthy ears, and identify the optimal method and patient maneuver for each test. Our own normative data is presented alongside published comparisons. STUDY DESIGN: Diagnostic test cohort study...
March 16, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28304079/endoscope-or-microscope-guided-pediatric-tympanoplasty-comparison-of-grafting-technique-and-outcome
#16
Adrian L James
OBJECTIVES/HYPOTHESIS: To review experience from the introduction of totally endoscopic ear surgery (TEES) to a pediatric tympanoplasty practice to identify factors influencing technique selection and successful outcome. STUDY DESIGN: Prospective cohort study. METHODS: Analysis of prospectively acquired data from a consecutive series of 295 surgeries for tympanic membrane perforation over a 12-year period. Success of perforation closure was compared between microscope and TEES grafting techniques...
March 17, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28298177/tympanic-membrane-organ-culture-using-cell-culture-well-inserts-engrafted-with-tympanic-membrane-tissue-explants
#17
Lawrence J Liew, Richard M Day, Rodney J Dilley
Tissue engineering approaches using growth factors and various materials for repairing chronic perforations of the tympanic membrane are being developed, but there are surprisingly few relevant tissue culture models available to test new treatments. Here, we present a simple three-dimensional model system based on micro-dissecting the rat tympanic membrane umbo and grafting it into the membrane of a cell culture well insert. Cell outgrowth from the graft produced sufficient cells to populate a membrane of similar surface area to the human tympanic membrane within 2 weeks...
March 1, 2017: BioTechniques
https://www.readbyqxmd.com/read/28294080/outcome-and-cost-analysis-of-bilateral-sequential-same-day-cartilage-tympanoplasty-compared-with-bilateral-staged-tympanoplasty
#18
RANDOMIZED CONTROLLED TRIAL
A D Olusesi, O Oyeniran
BACKGROUND: Few studies have compared bilateral same-day with staged tympanoplasty using cartilage graft materials. METHODS: A prospective randomised observational study was performed of 38 chronic suppurative otitis media patients (76 ears) who were assigned to undergo bilateral sequential same-day tympanoplasty (18 patients, 36 ears) or bilateral sequential tympanoplasty performed 3 months apart (20 patients, 40 ears). Disease duration, intra-operative findings, combined duration of surgery, post-operative graft appearance at 6 weeks, post-operative complications, re-do rate and relative cost of surgery were recorded...
May 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28289315/wrinkling-of-tympanic-membrane-under-unbalanced-pressure
#19
Bo Wang, Pravarsha Ghanta, Sandra Vinnikova, Siyuan Bao, Junfeng Liang, Hongbing Lu, Shuodao Wang
Mechanics of tympanic membrane (TM) is crucial for investigating the acoustic transmission through the ear. In this study, we studied the wrinkling behavior of tympanic membrane when it is exposed to mismatched air pressure between the ambient and the middle ear. The Rayleigh-Ritz method is adopted to analyze the critical wrinkling pressure and the fundamental eigenmode. An approximate analytical solution is obtained and validated by finite element analysis (FEA). The model will be useful in future investigations on how the wrinkling deformation of the TM alters the acoustic transmission function of the ear...
April 2017: Journal of Applied Mechanics
https://www.readbyqxmd.com/read/28288478/benign-temporomandibular-joint-lesions-presenting-as-masses-in-the-external-auditory-canal
#20
Ryan A Williams, Robert K Jackler, C Eduardo Corrales
OBJECTIVE: Describe benign lesions arising from the temporomandibular joint (TMJ) that presented as masses in the external auditory canal (EAC). STUDY DESIGN: Retrospective case series of two academic medical centers. PATIENTS: Six patients with lesions emanating from the TMJ that presented as EAC masses. Lesions included pigmented villonodular synovitis (PVNS), nodular fasciitis, foramen of Huschke herniation with salivary fistula, fibroepithelial polyp, superficial angiomyxoma, and giant cell tumor (GCT)...
April 2017: Otology & Neurotology
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