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Intratympanic

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https://www.readbyqxmd.com/read/29227445/mobile-hearing-testing-applications-and-the-diagnosis-of-sudden-sensorineural-hearing-loss-a-cautionary-tale
#1
Rosh K V Sethi, Iman Ghanad, Vivek Kanumuri, Barbara Herrmann, Elliott D Kozin, Aaron K Remenschneider
OBJECTIVE: Mobile hearing applications (apps) are available for hearing testing, personal sound amplification, as well as hearing aid modulation. Hearing testing apps are gaining popularity, especially in resource-limited settings. The reliability of mobile hearing testing apps, however, is not well characterized. PATIENTS/INTERVENTIONS: A case study of a single patient with a complaint of sudden hearing loss presenting to a tertiary-care hospital. MAIN OUTCOME MEASURE: Comparison of a mobile hearing testing app results with standard audiogram...
January 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29197586/ph-sensitive-polymeric-nanoparticles-with-antioxidant-and-anti-inflammatory-properties-against-cisplatin-induced-hearing-loss
#2
Sergio Martín-Saldaña, Raquel Palao-Suay, María Rosa Aguilar, Luis García-Fernández, Humberto Arévalo, Almudena Trinidad, Rafael Ramírez-Camacho, Julio San Román
Polymeric nanoparticles (NP) based on smart synthetic amphiphilic copolymers are used to transport and controlled release dexamethasone in the inner ear to protect against the ototoxic effect of cisplatin. The NP were based on a mixture of two pseudo-block polymer drugs obtained by free radical polymerization: poly(VI-co-HEI) and poly(VP-co-MVE) or poly(VP-co-MTOS), being VI 1-vinylimidazole, VP N-vinylpyrrolidone, and IBU, MVE and MTOS the methacrylic derivatives of ibuprofen, α-tocopherol and α-tocopheryl succinate, respectively...
November 29, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29168028/systemic-intratympanic-and-combined-administration-of-steroids-for-sudden-hearing-loss-a-prospective-randomized-multicenter-trial
#3
Michael Tsounis, George Psillas, Miltiadis Tsalighopoulos, Victor Vital, Nicolas Maroudias, Konstantinos Markou
PURPOSE: The purpose of this prospective, randomized, multicenter clinical trial was to compare the therapeutic efficacy of systemic versus intratympanic versus combined administration of steroids in the treatment of idiopathic sudden sensorineural hearing loss. METHODS: 102 patients with an up to 14 days history of idiopathic sudden sensorineural hearing loss were randomized to 1 of 3 arms and followed prospectively. Group A (35 patients) received prednisolone intravenously followed by methylprednisolone orally, whereas Group B (34 patients) were administered intratympanic methylprednisolone...
November 22, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/29165312/the-role-of-high-dose-intratympanic-dexamethasone-as-salvage-therapy-for-idiopathic-sudden-sensorineural-hearing-loss
#4
Špela Kordiš, Saba Battelino
OBJECTIVE: The aim of this study was to assess the efficacy of a single high dose intratympanic (IT) dexamethasone (DEX) as salvage therapy for idiopathic sudden sensorineural hearing loss (ISSNHL) after unsuccessful treatment with oral corticosteroid (CS). MATERIALS AND METHODS: This was a prospective open-label study of 59 patients treated with IT DEX after systemic CS therapy has failed. All patients received high dose (24 mg/mL) IT DEX in a single injection through myringotomy...
November 21, 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/29160156/prestin-as-an-otologic-biomarker-of-cisplatin-ototoxicity-in-a-guinea-pig-model
#5
James Naples, Robert Cox, Gregory Bonaiuto, And Kourosh Parham
Objective To evaluate (1) whether changes in serum prestin aid in early detection of cisplatin ototoxicity, (2) the role of diltiazem as an otoprotectant, and (3) whether prestin levels are sensitive to effects of diltiazem. Study Design Experimental animal study. Setting Translational research laboratory. Subjects Twenty female guinea pigs. Methods Two groups of 10 guinea pigs were used. The relationship between serum prestin levels and auditory brainstem response (ABR) thresholds was compared between the groups...
November 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29151378/therapeutic-and-protective-effects-of-autologous-serum-in-amikacin-induced-ototoxicity
#6
I B Arslan, G G Aslan, G C Mercan, S Vatansever, I Cukurova, S Gokalp, A Aslan
OBJECTIVE: Possible therapeutic and protective benefits of intratympanic autologous serum application in amikacin-induced ototoxicity were investigated. METHODS: Twenty-four guinea pigs were separated equally into two groups: therapeutic (group A) and protective (group B). Transient evoked otoacoustic emissions were recorded before and after autologous serum application. Apoptotic cells were identified in the organ of Corti, spiral limbus and spiral ganglion by the terminal deoxynucleotidyl transferase-mediated dUTP nick-end labelling ('TUNEL') method...
November 20, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/29149379/efficacy-of-systemic-and-intratympanic-corticosteroid-combination-therapy-versus-intratympanic-or-systemic-therapy-in-patients-with-idiopathic-sudden-sensorineural-hearing-loss-a-randomized-controlled-trial
#7
Mohammadtaghi Khorsandi Ashtiani, Farzad Firouzi, Shahin Bastaninejad, Sasan Dabiri, Sevil Nasirmohtaram, Niloufar Saeedi, Hossein Ghazavi, Leyla Sahebi
OBJECTIVE: The present study was conducted to compare the rates of recovery from idiopathic sudden deafness after the treatment with oral and intratympanic corticosteroids in both mono and combination therapies. STUDY DESIGN: Triple-blind randomized clinical trial. SETTINGS: Tertiary referral hospital. SUBJECTS AND METHODS: A total of 112 patients who were admitted to the ENT emergency department randomly divided into three groups: an oral corticosteroid plus intratympanic placebo (systemic corticosteroid monotherapy group); an intratympanic corticosteroid plus oral placebo group (IT monotherapy group); and a combination therapy group (IT plus systemic combination group)...
November 17, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/29110919/effects-of-intratympanic-dexamethasone-on-noise-induced-hearing-loss-an-experimental-study
#8
Sait Serdar Gumrukcu, İlhan Topaloglu, Ziya Salturk, Belgin Tutar, Yavuz Atar, Güler Berkiten, Ayşe Enise Göker
AIM: Aim of the study was to evaluate the effect of intratympanic steroid treatment on hearing based on oto-acoustic emission. METHODS: A total of 16 healthy female Wistar albino rats weighing were used in this study. They were divided in to 2 groups and each group was exposed to noise at 110dB for 25min to induce acoustic trauma. Intratympanic dexamethasone was administered to the middle ears of animals in the experimental group on the same day as exposure to noise...
October 27, 2017: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/29105767/the-relationship-between-endolymphatic-hydrops-in-the-vestibule-and-low-frequency-air-bone-gaps
#9
Satofumi Sugimoto, Tadao Yoshida, Masaaki Teranishi, Yuriko Okazaki, Shinji Naganawa, Michihiko Sone
OBJECTIVES/HYPOTHESIS: To investigate the relationship between endolymphatic hydrops and hearing level, focusing on significant vestibular endolymphatic hydrops adjacent to the stapes footplate and low-frequency air-bone gaps. STUDY DESIGN: Retrospective study. METHODS: The study included 1,548 ears from 775 patients who underwent magnetic resonance imaging examination in our university hospital to investigate possible endolymphatic hydrops between January 2012 and December 2015...
November 6, 2017: Laryngoscope
https://www.readbyqxmd.com/read/29072240/the-role-of-the-nasal-and-paranasal-sinus-pathologies-on-the-development-of-chronic-otitis-media-and-its-subtypes-a-computed-tomography-study
#10
M Damar, A E Dinç, D Erdem, S Bişkin, S Ş Eliçora, Y Ç Kumbul
OBJECTIVE: This objective of this study is to evaluate the presence and the coincidence of common nasal and paranasal sinus pathologies in adults suffering from chronic otitis media (COM) and its subtypes. MATERIALS AND METHODS: The study group comprised 354 ears of 177 patients who underwent tympanoplasty with or without mastoidectomy from January 2013 to February 2015 due to uni/bilateral COM. Chronic suppurative otitis media, intratympanic tympanosclerosis (ITTS), cholesteatoma, and tympanic membrane with retraction pockets constituted subtypes of COM...
September 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29064826/ethovision%C3%A2-analysis-of-open-field-behaviour-in-rats-following-bilateral-vestibular-loss
#11
Phillip Aitken, Yiwen Zheng, Paul F Smith
Bilateral vestibular loss (BVL) causes a unique behavioural syndrome in rodents, with symptoms such as locomotor hyperactivity and changes in exploratory behaviour. Many of these symptoms appear to be indirect consequences of the loss of vestibular reflex function and are difficult to explain. Although such symptoms have been reported before, there have been few systematic studies of the effects of BVL using automated digital tracking systems in which many behavioural symptoms can be measured simultaneously with high precision...
2017: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29059871/ampoule-and-nozzle-development-for-needle-free-injections
#12
John Liu, N Catherine Hogan, Ian Hunter
A rigid, compact, multi-piece ampoule has been designed and fabricated as a platform to conveniently house different nozzle inserts one at a time to offer increased jet consistency and functional flexibility. Three different nozzle geometries that respectively produce a single axial jet, radial jets, and intersecting jets are designed and fabricated. Through high-speed imaging and injection into tissue analog and ex vivo porcine tissue, these nozzles are demonstrated to have potential for a range of injection applications including intradermal, intratympanic, and traditional uses...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29038666/study-of-methylene-blue-ototoxicity-in-the-guinea-pig
#13
Sarah Belhassen, Musaed Alzahrani, Marc-Elie Nader, Louis Gaboury, Issam Saliba
BACKGROUND: Methylene blue is widely used in the medical field, especially as a blue dye for staining. It is also used as a photosensitizing agent in antimicrobial photodynamic therapy, which once photoactivated is effective for the eradication of several multi-resistant bacteria. The objective of this study was to investigate the ototoxic potential of methylene blue and precise its use in otology. METHODS: It was a prospective animal study performed on guinea pigs in our tertiary medical center...
November 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/28992726/middle-ear-histopathology-following-magnetic-delivery-to-the-cochlea-of-prednisolone-loaded-iron-oxide-nanoparticles-in-rats
#14
Jean-Francois Lafond, Mika Shimoji, Bharath Ramaswamy, Mohammed I Shukoor, Pulkit Malik, Benjamin Shapiro, Didier A Depireux
Delivery of therapy to the cochlea is a challenge and limits the efficacy of therapies meant to treat hearing loss, reverse tinnitus, and protect hearing from chemotherapy regimens. Magnetic injection is a technique that uses magnetic fields to inject nanoparticles from the middle ear into the cochlea, where they can then elute therapy to treat hearing disorders. To evaluate the safety of this treatment in the middle ear, 30 rats were subdivided into 6 groups and treated by single or multiple intratympanic injections of saline, prednisolone, nanoparticles, or nanoparticles loaded with prednisolone...
January 1, 2017: Toxicologic Pathology
https://www.readbyqxmd.com/read/28888426/sudden-sensorineural-hearing-loss-in-children-and-adolescents-clinical-characteristics-and-age-related-prognosis
#15
Jin Youp Kim, Jae Joon Han, Woong Sang Sunwoo, Ja-Won Koo, Seung-Ha Oh, Min-Hyun Park, Young Ho Kim
OBJECTIVE: Although many studies have investigated sudden sensorineural hearing loss (SSNHL) in adults, there were few studies on SSNHL in the pediatric population; especially research on treatment and prognosis of pediatric SSNHL was limited. The aim of this study was to evaluate clinical characteristics, treatment outcomes and prognostic factors in children and adolescents with SSNHL. METHODS: A retrospective review of medical records of 67 pediatric patients (67 ears) who had diagnosed with SSNHL at our hospitals was performed to analyze patients' clinical manifestations and audiograms...
September 6, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28851247/a-novel-vehicle-for-local-protein-delivery-to-the-inner-ear-injectable-and-biodegradable-thermosensitive-hydrogel-loaded-with-plga-nanoparticles
#16
Juan Dai, Wei Long, Zhongping Liang, Lu Wen, Fan Yang, Gang Chen
Delivery of biomacromolecular drugs into the inner ear is challenging, mainly because of their inherent instability as well as physiological and anatomical barriers. Therefore, protein-friendly, hydrogel-based delivery systems following local administration are being developed for inner ear therapy. Herein, biodegradable poly(lactic-co-glycolic acid) (PLGA) nanoparticles (NPs) containing interferon α-2 b (IFN α-2 b) were loaded in chitosan/glycerophosphate (CS/GP)-based thermosensitive hydrogel for IFN delivery by intratympanic injection...
September 13, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/28816698/intralabyrinthine-vestibular-schwannoma-responsive-to-intratympanic-gentamicin-treatment
#17
Edoardo Covelli, Luigi Volpini, Chiara Filippi, Silvia Tarantini, Vania Marrone, Simonetta Monini, Maurizio Barbara
Intralabyrinthine schwannoma (ILS) is a rare benign tumor that affects the ends of cochlear and vestibular nerves. In a majority of the cases, it occurs with unilateral progressive sensorineural hearing loss. Less frequent symptoms include tinnitus, imbalance, vertigo, or fullness. The advent of magnetic resonance imaging allows early diagnosis and enables an appropriate therapeutic protocol. This report describes a case of intravestibular schwannoma, with fluctuating hearing loss and intractable vertigo, treated with intratympanic gentamicin...
August 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/28816692/questionnaires-in-patients-with-unilateral-sudden-sensorineural-hearing-loss
#18
Gyu Ho Hwang, Jae Woo Joo, In Sik Song, Yoon Chan Rah, June Choi
OBJECTIVE: In this study, we evaluated the prognostic value of the Dizziness Handicap Inventory (DHI) and the Tinnitus Handicap Inventory (THI) in patients with unilateral sudden sensorineural hearing loss (SSNHL). MATERIALS AND METHODS: In total, 101 patients with unilateral SSNHL (44 women, 57 men), who were admitted and treated at our institution between December 2012 and June 2014, were included in the study. All patients completed the questionnaires for DHI and THI during their admission and were treated with bed rest and oral methylprednisolone (1 mg/kg, which was eventually tapered)...
August 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/28802357/evaluation-of-ototoxicity-of-intratympanic-administration-of-methotrexate-in-rats
#19
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/28774486/histopathology-of-tympanic-membranes-from-patients-with-ventilation-tubes
#20
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
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