Simple model for teaching myringotomy and aural ventilation tubeinsertion

1998 ◽  
Vol 112 (7) ◽  
pp. 642-643 ◽  
Author(s):  
A. O. Owa ◽  
R. W. R. Farrell
Keyword(s):  
Simple Model ◽  
Simple Solution ◽  
Ventilation Tube ◽  
Ear Canal ◽  
Tube Insertion ◽  
Limited Supply ◽  
Temporal Bones

AbstractAural ventilation tube insertion is the most common otological operation and is usually the first operation learnt by trainees. The limited supply of temporal bones as well as expensive commercial models hampers training in the procedure. This paper describes a simple solution making a model of the ear canal and drum out of materials available on an ENT ward.

scholarly journals External ear canal cholesteatoma after ventilation tube insertion and mastoidectomy

2012 ◽  
Vol 69 (4) ◽  
pp. 363-366 ◽  
Author(s):  
Dragoslava Djeric ◽  
Milan Jovanovic ◽  
Ivan Baljosevic ◽  
Srbislav Blazic ◽  
Milanko Milojevic
Keyword(s):  
Tympanic Membrane ◽  
Middle Ear ◽  
Membrane Surface ◽  
Tube Placement ◽  
External Ear ◽  
Ventilation Tube ◽  
Ear Canal ◽  
Tube Insertion ◽  
Tissue Mass ◽  
External Ear Canal

Introduction. Etiopathogenetically, there are two types of chollesteatomas: congenital, and acquired. Numerous theories in the literature try to explain the nature of the disease, however, the question about cholesteatomas remain still unanswered. The aim of the study was to present a case of external ear canal cholesteatoma (EEC) developed following microsurgery (ventilation tube insertion and mastoidectomy), as well as to point ant possible mechanisms if its development. Case report. A 16-yearold boy presented a 4-month sense of fullness in the ear and otalgia on the left side. A year before, mastoidectomy and posterior atticotomy were performed with ventilation tube placement due to acute purulent mastoiditis. Diagnosis was based on otoscopy examination, audiology and computed tomography (CT) findings. CT showed an obliterative soft-tissue mass completely filled the external ear canal with associated erosion of subjacent the bone. There were squamous epithelial links between the canal cholesteatoma and lateral tympanic membrane surface. They originated from the margins of tympanic membrane incision made for a ventilation tube (VT) insertion. The position of VT was good as well as the aeration of the middle ear cavity. The tympanic membrane was intact and of normal appearance without middle ear extension or mastoid involvement of cholesteatoma. Cholesteatoma and ventilation tube were both removed. The patient recovered without complications and shortly audiology revealed hearing improving. Follow-up 2 years later, however, showed no signs of the disease. Conclusion. There could be more than one potential delicate mechanism of developing EEC in the ear with VT insertion and mastoidectomy. It is necessary to perform routine otologic surveillance in all patients with tubes. Affected ear CT scan is very helpful in showing the extent of cholesteatoma and bony defects, which could not be assessed by otoscopic examination alone.

Drainage or paracentesis

2017 ◽  
Vol 6 (2) ◽  
pp. 1-7
Author(s):  
Beata Zielnik-Jurkiewicz
Keyword(s):  
General Anesthesia ◽  
Tympanic Membrane ◽  
Surgical Procedures ◽  
Tympanostomy Tube ◽  
Tympanic Cavity ◽  
Ventilation Tube ◽  
Ear Canal ◽  
Tube Insertion ◽  
Anesthesia Complications ◽  
Made In

Tympanostomy tube insertion and tympanic membrane incision are two the most frequently performed surgical procedures in otolaryngology, especially in children. The tympanic membrane incision - paracentesis, or myringotomy – is an incision of the tympanic membrane for diagnostic purposes or to allow drainage of pathological secretion from the tympanic cavity. Tympanostomy tube insertion involves incision made in the tympanic membrane and insertion of a ventilation tube (various types and for various periods of time) to improve hearing and aeration of the tympanic cavity. Procedures are performed through the ear canal (transcanal approach), under local or general anesthesia. Complications may occur in some cases of paracentesis and tympanostomy tube insertion.

Multifrequency multicomponent tympanometry in children with a history of ventilation tube insertion

2021 ◽  
pp. 110798
Author(s):  
Sule Kaya ◽  
Kemal Keseroglu ◽  
Sibel Alicura Tokgoz ◽  
Elife Barmak ◽  
Guleser Saylam ◽  
...  
Keyword(s):  
Ventilation Tube ◽  
Tube Insertion ◽  
History Of

scholarly journals Regional and hospital variation in commonly performed paediatric otolaryngology procedures in the Netherlands: a population-based study of healthcare utilisation between 2016 and 2019

BMJ Open ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. e046840
Author(s):  
Juliëtte J C M van Munster ◽  
Joost J G Wammes ◽  
Rolf H Bremmer ◽  
Amir H Zamanipoor Najafabadi ◽  
Raphael J Hemler ◽  
...  
Keyword(s):  
The Netherlands ◽  
Healthcare Utilisation ◽  
Care Process ◽  
Resource Utilisation ◽  
Ventilation Tube ◽  
Tube Insertion ◽  
High Quality ◽  
Cross Sectional ◽  
Referral Rates ◽  
Hospital Variation

ObjectiveIn the past few decades, there has been an increase in high-quality studies providing evidence on the effectiveness of commonly performed procedures in paediatric otolaryngology. We believe that now is the time to re-evaluate the care process. We aimed to analyse (1) the regional variation in incidence and referrals of adenoidectomies, tonsillectomies and ventilation tube insertions in children in the Netherlands between 2016 and 2019, (2) whether regional surgical rates, referral rates and in-hospital surgical rates were associated with one another, and (3) the hospital variation in healthcare costs, which indicates the utilisation of resources.DesignRepeated cross-sectional analysis.SettingFour neighbouring Dutch provinces comprising 2.8 million inhabitants and 14 hospitals.ParticipantsChildren aged 0–15 years.Outcome measuresWe analysed variation in regional surgical rates and referral rates per 1000 inhabitants and in-hospital surgical rates per 1000 clinic visitors, adjusted for age and socioeconomic status. Furthermore, the relationships between referral rates, regional surgical rates and in-hospital surgical rates were estimated. Lastly, variation in resource utilisation between hospitals was estimated.ResultsAdenoidectomy rates differed sixfold between regions. Twofold differences were observed for adenotonsillectomy rates, ventilation tube insertion rates and referral rates. Referral rates were negatively associated with in-hospital surgical rates for adenotonsillectomies, but not for adenoidectomies and ventilation tube insertions. In-hospital surgical rates were positively associated with regional rates for adenoidectomies and adenotonsillectomies. Significant variation between hospitals was observed in costs for all resources.ConclusionsWe observed low variation in tonsillectomies and ventilation tube insertion and high variation in adenoidectomies. Indications for a tonsillectomy and ventilation tube insertion are well defined in Dutch guidelines, whereas this is not the case for an adenoidectomy. Lack of agreement on indications can be expected and high-quality effectiveness research is required to improve evidence-based guidelines on this topic.

Temporomandibular joint herniation and the foramen of Huschke: an unusual external auditory canal mass

2011 ◽  
Vol 125 (12) ◽  
pp. 1279-1281 ◽  
Author(s):  
S J Prowse ◽  
G Kelly ◽  
F Agada
Keyword(s):  
Temporomandibular Joint ◽  
External Auditory Canal ◽  
Soft Tissues ◽  
Anterior Wall ◽  
Ear Canal ◽  
Surgical Closure ◽  
Computed Tomographic ◽  
History Of ◽  
Temporal Bones ◽  
Foramen Of Huschke

AbstractObjectives:We describe a rare case of spontaneous temporomandibular joint herniation into the external auditory canal, and we also review the presentation, aetiology and management of such cases.Case report:An 87-year-old woman presented with a four-month history of left-sided otorrhoea and otalgia. Examination revealed a soft, polypoid mass in the left ear canal. When the patient opened her mouth the lesion disappeared. Subsequent computed tomographic imaging of the patient's temporal bones confirmed an 8.6 mm defect in the antero-inferior portion of the left ear canal, with herniation of retrodiscal soft tissues.Conclusion:The external auditory canal is intimately related to the temporomandibular joint, separated only by its bony anterior wall. Neoplasm, trauma or inflammation in this area can result in displacement of the temporomandibular joint into the ear canal; however, spontaneous herniation is rare. Persistence of the primitive foramen of Huschke can result in dehiscence of the anterior canal wall, allowing articular tissue to prolapse into the ear canal. Surgical closure of these defects is known to be effective in ameliorating symptomatic cases.

3D Finite Element Modeling of Blast Wave Transmission From the External Ear to a Spiral Cochlea

2021 ◽  
Author(s):  
Marcus Brown ◽  
John Bradshaw ◽  
Rong Z. Gan
Keyword(s):  
Finite Element ◽  
Middle Ear ◽  
Basilar Membrane ◽  
Transverse Motion ◽  
Fe Model ◽  
Ear Canal ◽  
Blast Overpressure ◽  
Stapes Footplate ◽  
Human Ear ◽  
Temporal Bones

Abstract Blast-induced injuries affect the health of veterans, in which the auditory system is often damaged, and blast-induced auditory damage to the cochlea is difficult to quantify. A recent study modeled blast overpressure (BOP) transmission throughout the ear utilizing a straight, two-chambered cochlea, but the spiral cochlea's response to blast exposure has yet to be investigated. In this study, we utilized a human ear finite element (FE) model with a spiraled, two-chambered cochlea to simulate the response of the anatomical structural cochlea to BOP exposure. The FE model included an ear canal, middle ear, and two and half turns of two-chambered cochlea and simulated a BOP from the ear canal entrance to the spiral cochlea in a transient analysis utilizing fluid-structure interfaces. The model's middle ear was validated with experimental pressure measurements from the outer and middle ear of human temporal bones. The results showed high stapes footplate displacements up to 28.5µm resulting in high intracochlear pressures and basilar membrane (BM) displacements up to 43.2µm from a BOP input of 30.7kPa. The cochlea's spiral shape caused asymmetric pressure distributions as high as 4kPa across the cochlea's width and higher BM transverse motion than that observed in a similar straight cochlea model. The developed spiral cochlea model provides an advancement from the straight cochlea model to increase the understanding of cochlear mechanics during blast and progresses towards a model able to predict potential hearing loss after blast.

Sign in / Sign up

Export Citation Format

Share Document