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https://www.readbyqxmd.com/read/29790722/minimally-invasive-endoscopic-assisted-approaches-to-the-posterior-fossa
#1
Alexander Yang, Zach Folzenlogen, A Samy Youssef
Modern surgical approaches are becoming more minimalistic, associated with the term 'minimally invasive'. The endoscope provides a more panoramic anatomical view in addition to the ability to access narrow deep corners with decent illumination and clear visualization. Endoscopic assisted microsurgery through a tailored small craniotomy is the foundation of keyhole surgery. The endoscope can be advanced deeper into the field, thus enhancing an exposure and allowing bimanual dissection, thus prompting smaller craniotomies and tailored key exposures...
May 22, 2018: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/29784430/microvascular-decompression-for-hemifacial-spasm-surgical-techniques-and-intraoperative-monitoring
#2
M Sindou, P Mercier
Primary hemifacial spasm with few exceptions is due to the vascular compression of the facial nerve that can be evidenced with high resolution MRI. Microvascular decompression is the only curative treatment for this pathology. According to literature review detailed in chapter "conflicting vessels", the compression is located at the facial Root Exit Zone (REZ) in 95% of the cases, and in 5% distally at the cisternal or the intrameatal portion of the root as the sole conflict or in addition to one at brainstem/REZ...
May 18, 2018: Neuro-Chirurgie
https://www.readbyqxmd.com/read/29765868/retrobulbar-steatitis-and-meningitis-empyema-secondary-to-right-otitis-media-right-otitis-interna-and-an-inflammatory-polyp-in-a-cat
#3
Elena Fenollosa-Romero, Olivier Taeymans, Pieter Nelissen, Giunio B Cherubini, Claudia Busse
The purpose was to describe a case of retrobulbar steatitis and meningitis in a cat caused by otitis media, otitis interna and an inflammatory polyp in the middle ear. Investigations included ophthalmic and neurological examinations, haematology and biochemistry, magnetic resonance imaging (MRI), cerebrospinal fluid (CSF) analysis and aerobic, anaerobic bacterial and fungal culture of material from the middle ear. A 6-year-old female neutered domestic-short-haired cat presented with right-sided exophthalmos and resistance to retropulsion...
2018: Open Veterinary Journal
https://www.readbyqxmd.com/read/29716282/click-reception-in-the-harbor-porpoise-phocoena-phocoena-effects-of-electrode-and-contact-transducer-location-on-the-auditory-brainstem-response
#4
Jason Mulsow, James J Finneran, Dorian S Houser, Chad A Nordstrom, Lance G Barrett-Lennard, Robert F Burkard
Unlike terrestrial mammals that have unambiguous aerial sound transmission pathways via the outer ear and tympanum, sound reception pathways in most odontocetes are not well understood. Recent studies have used auditory brainstem response (ABR) measurements to examine sound reception pathways. This study sought to determine how sound source placements, recording electrode arrangements, and ABR peak analyses affect interpretations of sound reception in the harbor porpoise (Phocoena phocoena). Click stimuli were delivered in air from a contact transducer ("jawphone")...
April 2018: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/29705021/endoscope-assisted-decompression-of-facial-nerve-for-treatment-of-hemifacial-spasm
#5
J Magnan
Microvascular decompression has become the sole method for a curative treatment of primary hemifacial spasm. Finding the responsible conflicting artery is not always easy as its location can be deeply situated within the cerebellopontine/medullary fissure at the facial root exit zone. Sole or additional offending vessel(s) may be at the meatus of the internal auditory canal (5% of the cases). Identifying the compressive vessel(s) and performing decompression is in most cases possible without cerebellar retraction by classical microsurgical techniques...
April 25, 2018: Neuro-Chirurgie
https://www.readbyqxmd.com/read/29619785/compression-stockings-reduce-the-incidence-of-hypotension-but-not-that-of-cerebral-desaturation-events-in-the-beach-chair-position-a-randomized-controlled-trial
#6
Jae Hee Woo, Youn Jin Kim, Ji-Sun Jeong, Ji Seon Chae, Young Rong Lee, Jin Young Chon
BACKGROUND: The beach-chair position (BCP) results in decreases in venous return, cardiac output, and cerebral perfusion pressure. In this randomized, prospective study, we investigated whether applying thigh-high compression stockings affected the maintenance of regional cerebral tissue oxygen saturation (rSO2 ) in the BCP. METHODS: Patients undergoing orthopedic surgery in the BCP under general anesthesia were included and assigned randomly to the control or the compression stocking group...
April 2018: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/29572579/surgical-management-of-giant-intrapetrous-internal-carotid-aneurysm-presenting-with-coil-exposure-after-endovascular-treatment
#7
Le-Bao Yu, Dong Zhang, Shao-Hua Yang, Ji-Zong Zhao
Giant intrapetrous internal carotid aneurysms (petrous ICA aneurysm) are rare. A giant petrous ICA aneurysm presenting with otorrhagia and coil exposure to the external auditory meatus (EAM) after endovascular treatment has never been documented before. The authors report here a case of successful surgical trapping with bypass intervention of a giant petrous ICA aneurysm presenting with coil exposure after endovascular treatment. A 58-year-old man presented with persistent otorrhagia having been admitted to our hospital because of the recurrence of a giant petrous ICA aneurysm after repeated embolization treatments with coils...
March 23, 2018: Neurosurgical Review
https://www.readbyqxmd.com/read/29570519/cystic-progression-of-a-cavernous-malformation-at-the-level-of-the-trigeminal-root-entry-zone-presenting-with-sudden-onset-of-trigeminal-neuralgia
#8
Carlo Giacobbo Scavo, Raffaelino Roperto, Guglielmo Cacciotti, Luciano Mastronardi
BACKGROUND: Cavernous malformations (CM) in the cerebellopontine angle (CPA) are rare, and most of them are solid and extend from the internal auditory canal into the CPA. In contrast, cystic CM arising in the CPA and not involving the internal auditory canal and dura of the skull base are extremely rare. The authors present an uncommon large cystic progression of a cavernous malformation at the level of the trigeminal root entry zone evolving to severe trigeminal neuralgia and brainstem compression...
March 22, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29494482/earable-tempo-a-novel-hands-free-input-device-that-uses-the-movement-of-the-tongue-measured-with-a-wearable-ear-sensor
#9
Kazuhiro Taniguchi, Hisashi Kondo, Mami Kurosawa, Atsushi Nishikawa
In this study, an earphone-type interface named "earable TEMPO" was developed for hands-free operation, wherein the user can control the device by simply pushing the tongue against the roof of the mouth for about one second. This interface can be used to start and stop the music from a portable audio player. The earable TEMPO uses an earphone-type sensor equipped with a light emitting diode (LED) and a phototransistor to optically measure shape variations that occur in the external auditory meatus when the tongue is pressed against the roof of the mouth...
March 1, 2018: Sensors
https://www.readbyqxmd.com/read/29488502/-the-species-composition-and-sensitivity-of-pathogenic-microflora-responsible-for-the-development-of-otitis-externa-diffusa-to-the-components-of-polidexa
#10
V N Krasnozhen, E M Pokrovskaya, L T Bayazitova
The objective of the present work was to study microflora of the external auditory meatus in the patients presenting with bacterial otitis externa diffusa. The authors have analyzed the results of microbiological investigations involving 102 patients with this condition undergoing the treatment with 'Polidexa'. The characteristic of species composition of microflora associated with otitis externa diffusa is presented. The sensitivity of the most common pathogens responsible for the development of this pathology towards antibiotics contained in ear drops has been analysed...
2018: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/29433146/reconstruction-of-tragus-and-external-auditory-meatus-using-remnant-auricle-during-microtia-reconstruction
#11
Gao-Feng Li, Yi-Gao Hu, Wei Ding, Jun Tan, Xin Chen, Tao Luo, Bo Zhang, Xiao-Jia Liu
This article investigates an effective method with which to reconstruct the tragus and external auditory meatus for microtia reconstruction. The external ear was reconstructed using a delayed postauricular skin flap in patients with congenital microtia. After the first stage of delaying the postauricular skin flap and the second stage of otoplasty with ear framework fabricated from autogenous rib cartilage draping with the delayed skin flap, the third stage involved tragus and external auditory meatus canaloplasty...
April 2018: Facial Plastic Surgery: FPS
https://www.readbyqxmd.com/read/29426271/long-term-results-of-atresiaplasty-in-patients-with-congenital-aural-atresia
#12
Juuso Pellinen, Juha-Pekka Vasama, Ilkka Kivekäs
OBJECTIVES: To evaluate long-term benefits of atresiaplasty on hearing and the impact of surgery on quality of life (QoL) in congenital aural atresia (CAA) patients. METHODS: We evaluated the long-term hearing results, the impact of atresiaplasty on QoL, the meatal diameter of the operated ear canal, and the cumulative number of post-operative hospital visits in 14 CAA patients, on average, 12 years (range: 4-17 years) post-operatively. RESULTS: The mean preoperative pure tone average (PTA) was 61 dB HL...
February 9, 2018: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/29386735/translabyrinthine-approach-to-internal-auditory-meatus-a-retrospective-study
#13
Sunil Goyal, Kiran Natarajan, Amarnath Devarasetty, T Sarankumar, Neha Chauhan, Mohan Kameswaran
Background: Ear and the lateral skull base surgery is challenging and yet fascinating for a Neuro-otologist. A thorough knowledge of the complex anatomy is indispensable for the surgeon in order to provide the best possible care. Methods: The aim of the study was to highlight the present day indications for translabyrinthine approach to IAM from a Neuro-otologist perspective. Results: There were a total of 7 patients who underwent Translabyrinthine approach at our centre...
January 2018: Medical Journal, Armed Forces India
https://www.readbyqxmd.com/read/29342052/preauricular-approach-for-cholesteatoma-resection-after-surgical-overclosure-of-the-external-auditory-canal-and-cochlear-implantation
#14
Steven A Telian
: Chronic suppurative otitis media can have long-term effects on hearing if not managed effectively. When combined with cholesteatoma the condition may require creation of an open mastoid cavity. Recurrence of cholesteatoma is a concern when cochlear implantation is performed with overclosure of the external auditory meatus. A 61-year-old female with recurrent cholesteatoma in this setting was treated using a preauricular approach to provide adequate visualization while preventing the need to remove the implant or risking injury to the internal components...
March 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29278012/pilocytic-astrocytoma-of-the-cerebellopontine-angle-mimicking-vestibular-schwannoma-report-of-a-rare-entity
#15
Gautam Dutta, Daljit Singh, Hukum Singh, Deepashu Sachdeva, Vikas Kumar, Ashutosh Chaturvedi
We present a rare case of a 55-yr old patient of pilocytic astrocytoma of the cerebello-pontine angle mimicking a vestibular schwannoma. The tumor protruded into the porus acusticus causing enlargement of the internal auditory meatus, which is quite an unusual feature of glial tumours.
December 26, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/29142161/treatment-and-outcomes-of-carcinoma-of-the-external-and-middle-ear-the-validity-of-en-bloc-resection-for-advanced-tumor
#16
Takuma Matoba, Nobuhiro Hanai, Hidenori Suzuki, Daisuke Nishikawa, Eiji Tachibana, Takeshi Okada, Shingo Murakami, Yasuhisa Hasegawa
Carcinoma of the external and middle ear is a very rare disease. Despite the various treatment modalities available, its prognosis is still poor. We aimed to analyze the treatment modalities, outcomes, and validity of surgical approaches, especially in advanced tumors in the ear. Twenty-five patients with carcinoma of the external and middle ear were retrospectively analyzed. The modified Pittsburgh staging system was used for staging of the patients. Overall and disease-free survival was estimated using of Kaplan-Meier method...
January 15, 2018: Neurologia Medico-chirurgica
https://www.readbyqxmd.com/read/29113858/differences-in-blood-pressure-by-measurement-technique-in-neurocritically-ill-patients-a-technological-assessment
#17
Abhijit V Lele, Daren Wilson, Prabhakar Chalise, Jules Nazzaro, Vijay Krishnamoorthy, Monica S Vavilala
Blood pressure data may vary by measurement technique. We performed a technological assessment of differences in blood pressure measurement between non-invasive blood pressure (NIBP) and invasive arterial blood pressure (ABP) in neurocritically ill patients. After IRB approval, a prospective observational study was performed to study differences in systolic blood pressure (SBP), mean arterial pressure (MAP), and cerebral perfusion pressure (CPP) values measured by NIBP arm, ABP at level of the phlebostatic axis (ABP heart) and ABP at level of the external auditory meatus (ABP brain) at 30 and 45-degree head of bed elevation (HOB) using repeated measure analysis of covariance and correlation coefficients...
January 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29097033/-the-tumors-of-the-ear
#18
X Dubernard, J-C Kleiber, E Brenet, M-A Louges, Y Veleine, M Labrousse, M Makeieff, A Bazin, A Chays
Any cutaneous lesion of the outer ear must be managed jointly by a dermatologist and an ENT, regardless of the age of the patient. The presence of a malignant cutaneous carcinoma (Squamous cell carcinoma or melanoma) of the pavilion requires a minimum extension assessment by a cervical ultrasound, CT-scan and MRI will be prescribed according to the degree of infiltration and the presence of clinics signs (lymphadenopathy, facial paralysis, cognitive impairment). A polyp of the external auditory meatus must be systematically biopsied in consultation and, if necessary, in the operating room with fresh anatomopathological analysis...
November 2017: La Presse Médicale
https://www.readbyqxmd.com/read/29057182/anterior-inferior-cerebellar-arteries-juxtaposed-with-the-internal-acoustic-meatus-and-their-relationship-to-the-cranial-nerve-vii-viii-complex
#19
Fernando Alonso, Mohammad W Kassem, Joe Iwanaga, Rod J Oskouian, Marios Loukas, Amin Demerdash, R Shane Tubbs
Vascular loops in the cerebellopontine angle (CPA) and their relationship to cranial nerves have been used to explain neurological symptoms. The anterior inferior cerebellar artery (AICA) has variable branches producing vascular loops that can compress the facial cranial nerve (CN) VII and vestibulocochlear (CN VIII) nerves. AICA compression of the facial-vestibulocochlear nerve complex can lead to various clinical presentations, including hemifacial spasm (HFS), tinnitus, and hemiataxia. The formation of arterial loops inside or outside of the internal auditory meatus (IAM) can cause abutment or compression of CN VII and CN VIII...
August 16, 2017: Curēus
https://www.readbyqxmd.com/read/29054899/lung-adenocarcinoma-metastastic-lesion-in-the-internal-auditory-meatus
#20
Eugene Hung Chih Wong, Daniel Bodmer, Nora Tetter, Yves Brand
Metastasis to the cerebellopontine angle (CPA) or internal auditory meatus (IAM) is rare.We report a rare case of a 69-year-old woman with metastatic lung adenocarcinoma, who presented with 2 weeks history of left-sided hearing loss and progressively worsening vertigo. Examination revealed a left-sided facial nerve palsy while pure tone audiometry (PTA) showed a new left-sided deafness. MRI showed a new enhancing soft tissue lesion in the left IAM, highly suspicious of new metastases from her progressive lung cancer, which contributed to her neuro-otological symptoms...
October 20, 2017: BMJ Case Reports
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