keyword
MENU ▼
Read by QxMD icon Read
search

tympanic membrane

keyword
https://www.readbyqxmd.com/read/28816689/single-stage-canal-wall-down-mastoidectomy-with-reconstruction-of-the-canal-wall-5-years-experience-in-fayoum-province-egypt
#1
Mohamed Qotb, Tamer Fawzy, Waleed Ragab
OBJECTIVE: Removing the posterior canal wall or canal wall down mastoidectomy (CWDM) for the management of cholesteatoma remains controversial. We advocate partial removal of the posterior canal wall for complete eradication, followed by canal wall defect reconstruction to restore the normal anatomy and avoid the complications of CWDM. MATERIALS AND METHODS: Sixty-four patients with cholesteatoma (71 ears) were included. This study was conducted between 2009 and 2012...
August 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/28816688/cartilage-ossiculoplasty-from-stapes-to-tympanic-membrane-in-one-stage-intact-canal-wall-tympanoplasty-for-cholesteatoma
#2
Denis Ayache, Florent Manac'h, Christian B Teszler, Mathieu Veyrat, Wissame El Bakkouri, Alain Corré, Mary Daval
OBJECTIVE: To report hearing results of cartilage interposition ossiculoplasty in one-stage intact canal wall (ICW) tympanoplasty for cholesteatoma with intact stapes. MATERIALS AND METHODS: A retrospective study of pre and postoperative hearing status was conducted at a tertiary referral otologic center in a series of 61 patients having undergone one-stage ICW tympanoplasty for cholesteatoma with intact stapes and cartilage ossiculoplasty during the same procedure...
August 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/28807901/differing-contributions-of-the-first-and-second-pharyngeal-arches-to-tympanic-membrane-formation-in-the-mouse-and-chick
#3
Toshiko Furutera, Masaki Takechi, Taro Kitazawa, Junko Takei, Takahiko Yamada, Tri Vu Hoang, Filippo M Rijli, Hiroki Kurihara, Shigeru Kuratani, Sachiko Iseki
We have proposed that independent origins of the tympanic membrane (TM), consisting of the external auditory meatus (EAM) and first pharyngeal pouch, are linked with distinctive middle ear structures in terms of dorsal-ventral patterning of the pharyngeal arches during amniote evolution. However, previous studies have suggested that the first pharyngeal arch (PA1) is crucial for TM formation in both the mouse and chick. In this study, we compare TM formation along the anterior-posterior axis in these animals using Hoxa2 expression as a marker of the second pharyngeal arch (PA2)...
August 14, 2017: Development
https://www.readbyqxmd.com/read/28807323/inlay-butterfly-miringoplasty-our-experience
#4
Paula Cruz Toro, Ángela Callejo Castillo, Rafael Moya Martínez, Iván Domenech Juan
INTRODUCTION: Multiple surgical techniques have been proposed to close tympanic perforations. Eavey, two decades ago, described a technique aimed at closing central perforations in children. For this, he designed a butterfly-shaped cartilage graft that was placed between the tympanic membrane in an inlay manner. This technique showed great effectiveness for the closure of perforations as well as low morbidity, rapidity and great economic difference. METHODS: We performed a descriptive study of a series of cases analysing 32 interventions in children and adults with the modified Eavey technique, during the period from January 2012 to November 2016...
August 11, 2017: Acta Otorrinolaringológica Española
https://www.readbyqxmd.com/read/28807065/possible-role-of-dickkopf-1-protein-in-the-pathogenesis-of-tympanosclerosis-in-a-rat-model
#5
Y Zhang, S Wang, Y Zheng, A Liu
OBJECTIVES: This study aimed to investigate the expression of DKK1 protein in an experimental model of tympanosclerosis and its possible role in the pathogenesis of this disorder. METHODS: Forty Sprague Dawley rats were included in the study: 20 in the control group (which received no treatment) and 20 in the experimental group (which received an incision to induce tympanosclerosis). Otomicroscopy was performed to observe the development of myringosclerosis. Haematoxylin and eosin staining was performed to observe the morphological changes...
August 15, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28802357/evaluation-of-ototoxicity-of-intratympanic-administration-of-methotrexate-in-rats
#6
Sabri Baki Eren, Remzi Dogan, Alper Yenigun, Bayram Veyseller, Selahattin Tugrul, Orhan Ozturan, Mehmet Serif Aydin
OBJECTIVE: Methotrexate is a dihydrofolate reductase enzyme inhibitor with very high selectivity, and it is an antiproliferative folic acid antagonist used for the treatment of autoimmune diseases. In this study, our objective was to evaluate the effect of intratympanic Methotrexate application in the inner ear. METHODS: This study was planned as an animal study. This study performed in a tertiary referral center. 24 healthy female rats were used in our study. They were separated into three groups...
September 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28800467/tympanic-membrane-pressure-buffering-function-at-quasi-static-and-low-frequency-pressure-variations
#7
Wasil H M Salih, Pieter G G Muyshondt, Joris J J Dirckx
Deformation of the tympanic membrane is known to contribute to the pressure regulation processes in the middle ear cleft. In this paper we investigated pressure variations in the rabbit middle ear in response to sinusoidal varying pressures applied to the ear canal, with frequencies ranging from 0.5 Hz to 50 Hz and pressure amplitudes ranging between 0.25 kPa and 1 kPa. The transtympanic pressure difference was found to be smallest in the quasi-static range, and quickly increased as a function of frequency...
July 26, 2017: Hearing Research
https://www.readbyqxmd.com/read/28797141/butterfly-cartilage-tympanoplasty-long-term-results-excellent-treatment-method-in-small-and-medium-sized-perforations
#8
Isa Kaya, Murat Benzer, Mustafa Uslu, Cem Bilgen, Tayfun Kirazli
Objectives: The aim of this study was to evaluate and report the long-term results of the butterfly cartilage tympanoplasty. Short-term and long-term hearing outcomes were compared according to age and perforation location as well. Methods: Ninety-three patients who were diagnosed with noncomplicated chronic otitis media and underwent microscopic transcanal butterfly cartilage tympanoplasty due to anterior, posterior, and central tympanic membrane perforation were included...
August 12, 2017: Clinical and Experimental Otorhinolaryngology
https://www.readbyqxmd.com/read/28796094/patulous-eustachian-tube-dysfunction-patient-demographics-and-comorbidities
#9
Bryan K Ward, Yehia Ashry, Dennis S Poe
OBJECTIVE: The objective is to describe a large cohort of patients presenting with patulous Eustachian tube (pET) dysfunction. STUDY DESIGN: Retrospective patient series. SETTING: Tertiary referral center. PATIENTS: All outpatient visits (2004-2016) that were assigned ICD9 code (381.7-Patulous Eustachian tube) were screened. Only patients with observed tympanic membrane movements during ipsilateral nasal breathing or acoustic reflex decay testing demonstrating transmitted nasal breathing were included (n = 190, n = 239 ears)...
August 8, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28794672/a-new-species-of-terrestrial-breeding-frog-amphibia-craugastoridae-pristimantis-from-high-elevations-of-the-pui-pui-protected-forest-in-central-peru
#10
Edgar Lehr, Rudolf von May
We describe a new species of Pristimantis from upper montane forests and high Andean grasslands of the Pui Pui Protected Forest and its close surroundings, Región Junín, central Peru. The description of the new species is based on 34 specimens found at elevations between 3400 and 3936 m a.s.l. Pristimantis attenboroughisp. n. is characterized by a snout-vent length of 14.6-19.2 mm in adult males (n = 21), 19.2-23.0 mm in adult females (n = 10), and is compared morphologically and genetically with other taxonomically and biogeographically relevant species of Pristimantis...
2017: ZooKeys
https://www.readbyqxmd.com/read/28792529/discrepancy-between-self-assessed-hearing-status-and-measured-audiometric-evaluation
#11
So Young Kim, Hyung-Jong Kim, Min-Su Kim, Bumjung Park, Jin-Hwan Kim, Hyo Geun Choi
OBJECTIVE: The purpose of this study was to examine the difference between self-reported hearing status and hearing impairment assessed using conventional audiometry. The associated factors were examined when a concordance between self-reported hearing and audiometric measures was lacking. METHODS: In total, 19,642 individuals ≥20 years of age who participated in the Korea National Health and Nutrition Examination Surveys conducted from 2009 through 2012 were enrolled...
2017: PloS One
https://www.readbyqxmd.com/read/28790141/prognostic-factors-for-treatment-failure-in-acute-otitis-media
#12
Paula A Tähtinen, Miia K Laine, Aino Ruohola
BACKGROUND AND OBJECTIVES: Antimicrobial treatment is effective in the management of acute otitis media (AOM), but approximately half of the children may recover without antimicrobial agents. By identifying patients who may not require antimicrobial treatment for the management of AOM, the use of antimicrobial agents could be substantially reduced. Our aim was to identify subgroups of children with AOM who would benefit most from antimicrobial treatment and children who could be suitable for initial observation...
August 8, 2017: Pediatrics
https://www.readbyqxmd.com/read/28777900/incidence-of-middle-ear-barotrauma-in-staged-versus-linear-chamber-compression-during-hyperbaric-oxygen-therapy-a-double-blinded-randomized-controlled-trial
#13
Andrew W A Ng, Reinhold Muller, John Orton
CONTEXT: Middle ear barotrauma (MEB) is common during chamber compression in hyperbaric oxygen therapy. However, little evidence exists on an optimal compression protocol to minimize the incidence and severity of MEB. OBJECTIVE: To compare the incidence of MEB during hyperbaric oxygen therapy using two different chamber compression protocols. DESIGN: Double-blinded, randomized controlled trial. SETTING: Hyperbaric Medicine Unit, The Townsville Hospital, Queensland, Australia, September 2012 to December 2014...
March 2017: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
https://www.readbyqxmd.com/read/28774486/histopathology-of-tympanic-membranes-from-patients-with-ventilation-tubes
#14
Mehmet Faruk Oktay, Hasan Deniz Tansuker, Hisaki Fukushima, Michael M Paparella, Patricia A Schachern, Sebahattin Cureoglu
OBJECTIVE: To evaluate the histopathologic changes in tympanic membranes (TMs) with ventilation tubes (VTs). METHODS: In this retrospective human temporal bone study our overall study group included 4 subgroups of TMs from deceased donors as follows: 24 with a history of VT insertion for chronic otitis media with effusion (COME-VT); 5 with a history of VT insertion for Meniere's disease (MD-VT); 33 without a history of VT insertion for chronic otitis media with effusion (COME); and 14 without a history of VT insertion for Meniere's disease (MD)...
July 31, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28769671/a-new-species-of-semiarboreal-toad-of-the-rhinella-festae-group-anura-bufonidae-from-the-cordillera-azul-national-park-peru
#15
Juan C Cusi, Jiří Moravec, Edgar Lehr, Václav Gvoždík
A new semiarboreal species of the Rhinella festae group is described from montane forests of the Cordillera Azul National Park between 1245 and 1280 m a.s.l. in the Cordillera Oriental, San Martín region, northern Peru. The new species is morphologically and genetically compared with members of the Rhinella acrolopha group (former genus Rhamphophryne) and members of the R. festae group. The new species is characterized by its large size (female SVL 47.1-58.3 mm, n = 4), eight presacral vertebrae, fusion of the sacrum and coccyx, long protuberant snout, snout directed slightly anteroventral in lateral view, cranial crests moderately developed, absence of occipital crest, presence of tympanic membrane, dorsolateral rows of small conical tubercles extending from parotoid gland to groin, hands and feet with long digits, fingers basally webbed and toes moderately webbed...
2017: ZooKeys
https://www.readbyqxmd.com/read/28769569/management-of-traumatic-tympanic-membrane-perforation-a-comparative-study
#16
Tianxi Gao, Xiaoli Li, Juan Hu, Weijun Ma, Jingjing Li, Na Shao, Zhenghui Wang
This prospective study was conducted to evaluate the efficacy of sea buckthorn oil patches in treating traumatic tympanic membrane (TM) perforations. We enrolled 370 patients with traumatic TM perforations of different sizes. These patients were randomly assigned to control group and treatment group. In the treatment group, a sterile cotton patch with sea buckthorn oil was used to cover the TM perforations. In the control group, patients were treated with a sterile cotton patch. The healing rate and time were compared between the two groups...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28751512/flat-panel-angiography-in-the-cross-sectional-imaging-of-the-temporal-bone-assessment-of-image-quality-and-radiation-dose-compared-with-a-64-section-multisection-ct-scanner
#17
G Conte, E Scola, S Calloni, R Brambilla, M Campoleoni, L Lombardi, F Di Berardino, D Zanetti, L M Gaini, F Triulzi, C Sina
BACKGROUND AND PURPOSE: Cross-sectional imaging of the temporal bone is challenging because of the complexity and small dimensions of the anatomic structures. We evaluated the role of flat panel angiography in the cross-sectional imaging of the temporal bone by comparing its image quality and radiation dose with a 64-section multisection CT scanner. MATERIALS AND METHODS: We retrospectively collected 29 multisection CT and 29 flat panel angiography images of normal whole-head temporal bones...
July 27, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28746231/a-comparative-study-to-evaluate-the-efficacy-of-egf-fgf-2-and-0-3-w-v-ofloxacin-drops-on-eardrum-regeneration
#18
RANDOMIZED CONTROLLED TRIAL
Zhengcai Lou, Zihan Lou
BACKGROUND: Traumatic tympanic membrane perforations (TMPs) tend to spontaneous healing, however, large TMPs usually fail to healing. Clinical and experimental studies had demonstrated that growth factors accelerated the healing of large TMPs. The aim of this study was to compare the effects of growth factors and 0.3% (w/v) ofloxacin drops n the healing of human large TMPs. METHODS: A total of 184 human large traumatic TMPs were randomly assigned to receive epidermal growth factor (EGF) treatment, fibroblast growth factor-2 (FGF-2) treatment, 0...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28744193/on-the-origin-of-the-1-000-hz-peak-in-the-spectrum-of-the-human-tympanic-electrical-noise
#19
Javiera Pardo-Jadue, Constantino D Dragicevic, Macarena Bowen, Paul H Delano
The spectral analysis of the spontaneous activity recorded with an electrode positioned near the round window of the guinea pig cochlea shows a broad energy peak between 800 and 1,000 Hz. This spontaneous electric activity is called round window noise or ensemble background activity. In guinea pigs, the proposed origin of this peak is the random sum of the extracellular field potentials generated by action potentials of auditory nerve neurons. In this study, we used a non-invasive method to record the tympanic electric noise (TEN) in humans by means of a tympanic wick electrode...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28742632/the-middle-ear-cleft-status-in-a-natural-cohort-with-eustachian-tube-dysfunction
#20
Udi Cinamon, Dov Albukrek, Yahav Oron, Sharon Ovnat Tamir, Abraham Goldfarb, David Dvir, Tal Marom
BACKGROUND: The Eustachian tube (ET) has a major role in the middle ear (ME) pressure homeostasis. ET dysfunction is the accepted paradigm for pressure-related ME disorders. We studied the ME status in patients with severely diminished ET opening abilities, and anticipated to find ME disorders in most of them. PATIENTS AND METHODS: ME status was evaluated in unconscious adults, who were hospitalized in a rehabilitation center with severe brain damage, requiring tracheotomy and gastrostomy...
September 2017: Otology & Neurotology
keyword
keyword
78048
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"