TNA, Chapter III
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Sound and the Ear Chapter 2
© Jones & Bartlett Learning, LLC © Jones & Bartlett Learning, LLC NOT FOR SALE OR DISTRIBUTION NOT FOR SALE OR DISTRIBUTION Chapter© Jones & Bartlett 2 Learning, LLC © Jones & Bartlett Learning, LLC NOT FOR SALE OR DISTRIBUTION NOT FOR SALE OR DISTRIBUTION Sound and the Ear © Jones Karen &J. Kushla,Bartlett ScD, Learning, CCC-A, FAAA LLC © Jones & Bartlett Learning, LLC Lecturer NOT School FOR of SALE Communication OR DISTRIBUTION Disorders and Deafness NOT FOR SALE OR DISTRIBUTION Kean University © Jones & Bartlett Key Learning, Terms LLC © Jones & Bartlett Learning, LLC NOT FOR SALE OR Acceleration DISTRIBUTION Incus NOT FOR SALE OR Saccule DISTRIBUTION Acoustics Inertia Scala media Auditory labyrinth Inner hair cells Scala tympani Basilar membrane Linear scale Scala vestibuli Bel Logarithmic scale Semicircular canals Boyle’s law Malleus Sensorineural hearing loss Broca’s area © Jones & Bartlett Mass Learning, LLC Simple harmonic© Jones motion (SHM) & Bartlett Learning, LLC Brownian motion Membranous labyrinth Sound Cochlea NOT FOR SALE OR Mixed DISTRIBUTION hearing loss Stapedius muscleNOT FOR SALE OR DISTRIBUTION Compression Organ of Corti Stapes Condensation Osseous labyrinth Tectorial membrane Conductive hearing loss Ossicular chain Tensor tympani muscle Decibel (dB) Ossicles Tonotopic organization © Jones Decibel & hearing Bartlett level (dB Learning, HL) LLC Outer ear © Jones Transducer & Bartlett Learning, LLC Decibel sensation level (dB SL) Outer hair cells Traveling wave theory NOT Decibel FOR sound SALE pressure OR level DISTRIBUTION -
Endolymphatic Sac Tumors: an Overview Michael B
Endolymphatic Sac Tumors: An Overview Michael B. Gluth, MD, FACS Associate Professor Director, Comprehensive Ear & Hearing Ctr. Section of Otolaryngology-Head & Neck Surgery VHL Alliance, Chicago, 2015 Disclosure • No relevant financial interests or other relevant relationships to disclose • Will discuss off-label use of cochlear implants for single-sided SNHL VHL | 2 Outline • What is an endolymphatic sac tumor? • What are the symptoms? • What is the work-up and treatment? VHL | 3 Endolymphatic Sac Anatomy VHL | 4 Endolymphatic Sac Function • Part of the “membranous labyrinth” • Filled with fluid called endolymph • Secretes locally acting chemical called “saccin” • Involved with inner ear fluid homeostasis, mechanisms not fully understood – ELS is involved with Meniere’s disease VHL | 5 ELS Tumors • Extremely rare tumor originating from the endolymphatic sac, only recognized as a unique entity since 1989 • Benign (not cancer) • Highly destructive, slowly progressive – Destroy bone of inner ear, around cranial vault/skull base, and around facial nerve – Can grow into nerves, pass through dura (sac around brain) and press on cerebellum • May be asymptomatic until inner ear is partially destroyed • Key: if hearing loss is present: high chance dura is invaded VHL | 6 Symptoms • Most common presenting symptoms: – Hearing loss (85%) – Visible mass in the ear (50%) – Ringing in the ear (48%) – Facial paralysis (44%) – Dizziness/imbalance (44%) – Headache (37%) – Other neurologic (cranial nerve) weakness (25%) • If present in both ears, outlook -
(12) Patent Application Publication (10) Pub. No.: US 2013/0172829 A1 BADAW (43) Pub
US 2013 0172829A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2013/0172829 A1 BADAW (43) Pub. Date: Jul. 4, 2013 (54) DRY EYE TREATMENT SYSTEMS (52) U.S. Cl. CPC .................................... A61F 9/0008 (2013.01) (71) Applicant: SIGHT SCIENCES, INC., San USPC .......................................................... 604/294 Francisco, CA (US) (72) Inventor: Paul BADAWI, San Francisco, CA (US) (57) ABSTRACT (73) Assignee: SIGHT SCIENCES, INC., San Dry eye treatment apparatus and methods are described Francisco, CA (US) herein which generally comprise a patch or strip affixed to the skin of the upper and/or lower eyelids to deliver heat or other (21) Appl. No.: 13/645,985 forms of energy, pressure, drugs, moisture, etc. (alone or in combination) to the one or more meibomianglands contained (22) Filed: Oct. 5, 2012 within the underlying skin. The treatment strip or strips include one or more strips configured to adhere to an under Related U.S. Application Data lying region of skin in proximity to one or both eyes of a (63) Continuation-in-part of application No. 13/343,407, subject such that the one or more strips allow for the subject filed on Jan. 4, 2012. to blink naturally without restriction from the one or more patches. Moreover, the one or more Strips may be configured Publication Classification to emit energy to the underlying region of skin and where the one or more strips are shaped to follow a location of one or 51) Int.nt. CC. more me1bOm1amibomiam gland S COnta1nedined W1thinwithin the underlyingunderW1n A6DF 9/00 (2006.01) region of skin. -
Anatomical Changes and Audiological Profile in Branchio-Oto-Renal
THIEME 68 Review Article Anatomical Changes and Audiological Profile in Branchio-oto-renal Syndrome: A Literature Review Tâmara Andrade Lindau1 Ana Cláudia Vieira Cardoso1 Natalia Freitas Rossi1 Célia Maria Giacheti1 1 Department of Speech Pathology, Universidade Estadual Paulista - Address for correspondence Célia Maria Giacheti, PhD, Department of UNESP, Marília, São Paulo, Brazil Speech Pathology, Universidade Estadual Paulista UNESP, Av. Hygino Muzzi Filho, 737, Marília, São Paulo 14525-900, Brazil Int Arch Otorhinolaryngol 2014;18:68–76. (e-mail: [email protected]). Abstract Introduction Branchio-oto-renal (BOR) syndrome is an autosomal-dominant genetic condition with high penetrance and variable expressivity, with an estimated prevalence of 1 in 40,000. Approximately 40% of the patients with the syndrome have mutations in the gene EYA1, located at chromosomal region 8q13.3, and 5% have mutations in the gene SIX5 in chromosome region 19q13. The phenotype of this syndrome is character- ized by preauricular fistulas; structural malformations of the external, middle, and inner ears; branchial fistulas; renal disorders; cleft palate; and variable type and degree of hearing loss. Aim Hearing loss is part of BOR syndrome phenotype. The aim of this study was to present a literature review on the anatomical aspects and audiological profile of BOR syndrome. Keywords Data Synthesis Thirty-four studies were selected for analysis. Some aspects when ► branchio-oto-renal specifying the phenotype of BOR syndrome are controversial, especially those issues syndrome related to the audiological profile in which there was variability on auditory standard, ► BOR syndrome hearing loss progression, and type and degree of the hearing loss. -
Morphological and Functional Changes in a New Animal Model Of
Laboratory Investigation (2013) 93, 1001–1011 & 2013 USCAP, Inc All rights reserved 0023-6837/13 Morphological and functional changes in a new animal model of Me´nie`re’s disease Naoya Egami1, Akinobu Kakigi1, Takashi Sakamoto1, Taizo Takeda2, Masamitsu Hyodo2 and Tatsuya Yamasoba1 The purpose of this study was to clarify the underlying mechanism of vertiginous attacks in Me´nie`re’s disease (MD) while obtaining insight into water homeostasis in the inner ear using a new animal model. We conducted both histopatho- logical and functional assessment of the vestibular system in the guinea-pig. In the first experiment, all animals were maintained 1 or 4 weeks after electrocauterization of the endolymphatic sac of the left ear and were given either saline or desmopressin (vasopressin type 2 receptor agonist). The temporal bones from both ears were harvested and the extent of endolymphatic hydrops was quantitatively assessed. In the second experiment, either 1 or 4 weeks after surgery, animals were assessed for balance disorders and nystagmus after the administration of saline or desmopressin. In the first experiment, the proportion of endolymphatic space in the cochlea and the saccule was significantly greater in ears that survived for 4 weeks after surgery and were given desmopressin compared with other groups. In the second experiment, all animals that underwent surgery and were given desmopressin showed spontaneous nystagmus and balance disorder, whereas all animals that had surgery but without desmopressin administration were asymptomatic. Our animal model induced severe endolymphatic hydrops in the cochlea and the saccule, and showed episodes of balance disorder along with spontaneous nystagmus. -
Eyelids (2 Lec.)
Eyelids (2 lec.) Dr Abdulmelik shallal Anatomy: Eyelids are thin movable curtains composed of skin on their anterior surface and mucus membrane (conjunctiva) on the posterior surface, they contain: 1- Smooth muscles (Müller's muscles). 2- Striated muscles (Orbicularis oculi and Levator palpebrae superioris "LPS"). 3- Dense fibrous plates (Tarsal plates). 4- Glands. 5- Nerves and blood vessels. 1 The contents of the lid are distributed as follows: the anterior surface is made of skin which has a round edge with the lid margin, the subcutaneous tissue, muscular layer, the submuscular (areolar tissue) layer, the orbital septum which end as a tarsal plate (that forms the architecture of lid) and finally the conjunctiva (palpebral) which is situated most posterior. The free margin of the eyelids contains: 1- The lashes (Cilia). 2- Grey line. 3- Orifices of Meibomian glands. 4- Mucocutaneous junction 5- Superior and inferior puncti of Naso-Lacrimal System (NLS). Muscles of the eyelids: 1- Orbicularis oculi muscle: It is a thin oval sheet of concentric striated muscle surrounding the palpebral fissure. It can be divided into: a- Peripheral (orbital) part: This is involved in forceful closure of lids. b- Central (palpebral) part: This is involved in involuntary blinking, voluntary nonforceful closure and participates in forceful closure with the orbital part. c- Muscle of Rioland's: this part is represented by the gray line of lid margin. d- lacrimalis muscle: that attached to the fundus of lacrimal sac. This part is involved in pumping action of lacrimal drainage system. Nerve supply: Sensory: Ophthalmic branch of trigeminal nerve Motor: Facial nerve. -
Fallen in a Dead Ear: Intralabyrinthine Preservation of Stapes in Fossil Artiodactyls Maeva Orliac, Guillaume Billet
Fallen in a dead ear: intralabyrinthine preservation of stapes in fossil artiodactyls Maeva Orliac, Guillaume Billet To cite this version: Maeva Orliac, Guillaume Billet. Fallen in a dead ear: intralabyrinthine preservation of stapes in fossil artiodactyls. Palaeovertebrata, 2016, 40 (1), 10.18563/pv.40.1.e3. hal-01897786 HAL Id: hal-01897786 https://hal.archives-ouvertes.fr/hal-01897786 Submitted on 17 Oct 2018 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/297725060 Fallen in a dead ear: intralabyrinthine preservation of stapes in fossil artiodactyls Article · March 2016 DOI: 10.18563/pv.40.1.e3 CITATIONS READS 2 254 2 authors: Maeva Orliac Guillaume Billet Université de Montpellier Muséum National d'Histoire Naturelle 76 PUBLICATIONS 745 CITATIONS 103 PUBLICATIONS 862 CITATIONS SEE PROFILE SEE PROFILE Some of the authors of this publication are also working on these related projects: The ear region of Artiodactyla View project Origin, evolution, and dynamics of Amazonian-Andean ecosystems View project All content following this page was uploaded by Maeva Orliac on 14 March 2016. -
CONGENITAL MALFORMATIONS of the INNER EAR Malformaciones Congénitas Del Oído Interno
topic review CONGENITAL MALFORMATIONS OF THE INNER EAR Malformaciones congénitas del oído interno. Revisión de tema Laura Vanessa Ramírez Pedroza1 Hernán Darío Cano Riaño2 Federico Guillermo Lubinus Badillo2 Summary Key words (MeSH) There are a great variety of congenital malformations that can affect the inner ear, Ear with a diversity of physiopathologies, involved altered structures and age of symptom Ear, inner onset. Therefore, it is important to know and identify these alterations opportunely Hearing loss Vestibule, labyrinth to lower the risks of all the complications, being of great importance, among others, Cochlea the alterations in language development and social interactions. Magnetic resonance imaging Resumen Existe una gran variedad de malformaciones congénitas que pueden afectar al Palabras clave (DeCS) oído interno, con distintas fisiopatologías, diferentes estructuras alteradas y edad Oído de aparición de los síntomas. Por lo anterior, es necesario conocer e identificar Oído interno dichas alteraciones, con el fin de actuar oportunamente y reducir el riesgo de las Pérdida auditiva Vestíbulo del laberinto complicaciones, entre otras —de gran importancia— las alteraciones en el área del Cóclea lenguaje y en el ámbito social. Imagen por resonancia magnética 1. Epidemiology • Hyperbilirubinemia Ear malformations occur in 1 in 10,000 or 20,000 • Respiratory distress from meconium aspiration cases (1). One in every 1,000 children has some degree • Craniofacial alterations (3) of sensorineural hearing impairment, with an average • Mechanical ventilation for more than five days age at diagnosis of 4.9 years. The prevalence of hearing • TORCH Syndrome (4) impairment in newborns with risk factors has been determined to be 9.52% (2). -
Specialized for Sound Detection A. Outer
EAR © 2019zillmusom I. Overview - specialized for sound detection A. Outer ear - funnel shaped structure of cartilage and skin that leads to Tympanic membrane; directs sound toward Tympanic membrane; helps detect source of sound. B. Middle ear - air filled chamber that contains bones (ossicles) that link Tympanic membrane to cochlea; also contains muscles that dampen sounds; middle ear is linked to Nasopharynx by auditory tube which allows for equilibration of air pressure on inner side of Tympanic membrane. C. Inner ear - fluid filled chamber in petrous part of temporal bone; inner ear contains Cochlea (hearing) and Vestibular apparatus for gravity detection (both innervated by CN VIII). Clinical Note: Functioning of inner ear can be tested independently by vibrations transmitted directly through bone (Weber test: tuning fork on calvarium is perceived as sound); CONDUCTIVE HEARING LOSS - damage to middle ear (tympanic membrane, auditory ossicles); SENSORINEURAL HEARING LOSS - damage to inner ear (cochlea, CN VIII). II. Outer Ear - composed of two parts: A. Auricle (pinna) - elastic cartilage covered with skin; functions to reflect sound waves. Parts: helix, antihelix, tragus and lobule. Decorative Note: Cartilage does not extend into Lobule; Lobule can be readily pierced to provide support for decorative metal objects. B. External auditory meatus - tube from auricle to the Tympanic membrane; posterior to Parotid gland and TMJ (Temporomandibular joint); located anterior to mastoid process. Outer third consists of elastic cartilage; contains hairs, sebaceous glands and ceruminous glands (produce cerumen = ear wax); serves to protect Tympanic membrane; Inner two thirds is composed of bone lined with skin. Clinical note: External auditory meatus is curved anteriorly in adults, is straight in children; in adults, auricle is pulled up and back to insert otoscope. -
Otitis Media and Interna
Otitis Media and Interna (Inflammation of the Middle Ear and Inner Ear) Basics OVERVIEW • Inflammation of the middle ear (known as “otitis media”) and inner ear (known as “otitis interna”), most commonly caused by bacterial infection SIGNALMENT/DESCRIPTION OF PET Species • Dogs • Cats Breed Predilections • Cocker spaniels and other long-eared breeds • Poodles with long-term (chronic) inflammation of the ears (known as “otitis”) or the throat (known as “pharyngitis”) associated with dental disease • Primary secretory otitis media (PSOM) is described in Cavalier King Charles spaniels SIGNS/OBSERVED CHANGES IN THE PET • Depend on severity and extent of the infection; range from no signs, to those related to middle ear discomfort and nervous system involvement • Pain when opening the mouth; reluctance to chew; shaking the head; pawing at the affected ear • Head tilt • Pet may lean, veer, or roll toward the side or direction of the affected ear • Pet's sense of balance may be altered (known as “vestibular deficits”)—persistent, transient or episodic • Involvement of both ears—wide movements of the head, swinging back and forth; wobbly or incoordinated movement of the body (known as “truncal ataxia”), and possible deafness • Vomiting and nausea—may occur during the sudden (acute) phase • Facial nerve damage—the “facial nerve” goes to the muscles of the face, where it controls movement and expression, as well as to the tongue, where it is involved in the sensation of taste; signs of facial nerve damage include saliva and food dropping from the -
ANATOMY of EAR Basic Ear Anatomy
ANATOMY OF EAR Basic Ear Anatomy • Expected outcomes • To understand the hearing mechanism • To be able to identify the structures of the ear Development of Ear 1. Pinna develops from 1st & 2nd Branchial arch (Hillocks of His). Starts at 6 Weeks & is complete by 20 weeks. 2. E.A.M. develops from dorsal end of 1st branchial arch starting at 6-8 weeks and is complete by 28 weeks. 3. Middle Ear development —Malleus & Incus develop between 6-8 weeks from 1st & 2nd branchial arch. Branchial arches & Development of Ear Dev. contd---- • T.M at 28 weeks from all 3 germinal layers . • Foot plate of stapes develops from otic capsule b/w 6- 8 weeks. • Inner ear develops from otic capsule starting at 5 weeks & is complete by 25 weeks. • Development of external/middle/inner ear is independent of each other. Development of ear External Ear • It consists of - Pinna and External auditory meatus. Pinna • It is made up of fibro elastic cartilage covered by skin and connected to the surrounding parts by ligaments and muscles. • Various landmarks on the pinna are helix, antihelix, lobule, tragus, concha, scaphoid fossa and triangular fossa • Pinna has two surfaces i.e. medial or cranial surface and a lateral surface . • Cymba concha lies between crus helix and crus antihelix. It is an important landmark for mastoid antrum. Anatomy of external ear • Landmarks of pinna Anatomy of external ear • Bat-Ear is the most common congenital anomaly of pinna in which antihelix has not developed and excessive conchal cartilage is present. • Corrections of Pinna defects are done at 6 years of age. -
Management of Otitis
Chronic and recurrent otitis is Management of Otitis frustrating! • Otitis externa is the most common ear disease in the cat and dog • Reported incidence is 10-20% in the dog Lindsay McKay, DVM, DACVD and 2-10% in the cat [email protected] • It is a common reason for referral to VCA Arboretum View Animal Hospital dermatology specialists and very common clinical problem for general practitioners 1- Primary causes- directly Breaking down the problem induce otic inflammation • ALLERGIES (atopy and food allergies) • Step 1- Identify the primary cause of otitis • Parasites (Otodectes cyanotis, Demodicosis) • Step 2- Assess for predisposing factors of • Masses (tumors and polyps) otitis • Foreign bodies (ex plant awns, hair, • Step 3- Treat the secondary infections ceruminoliths, hardened medications) • Step 4- Identify the perpetuating factors of • Disorders of keratinization (hypothyroidism, otitis primary seborrhea, sebaceous adenitis) • Immune mediated disease (pemphigus, juvenile cellulitis, vasculitis) What are most common causes of 2- Predisposing factors of ear disease recurrent otitis…. • These factors facilitate inflammation by changing • Allergic disease in the dog- over 40% cases environment of the ear! in one study • Ear conformation- stenotic • Polyps and ear mites in the cat canals, hair in canals, pendulous ears • Excessive moisture or cerumen production • Treatment effects- irritation from meds/contact allergy or trauma from cleaning 1 3- Secondary bacterial and/or 4- Perpetuating factors- prevent yeast infections the resolution