Ashley M. Nassiri

ORCID: 0000-0001-9665-1868
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About
Contact & Profiles
Research Areas
  • Meningioma and schwannoma management
  • Hearing Loss and Rehabilitation
  • Ear Surgery and Otitis Media
  • Hearing, Cochlea, Tinnitus, Genetics
  • Neurofibromatosis and Schwannoma Cases
  • Facial Nerve Paralysis Treatment and Research
  • Vascular Malformations Diagnosis and Treatment
  • Noise Effects and Management
  • Vestibular and auditory disorders
  • Head and Neck Surgical Oncology
  • Adrenal and Paraganglionic Tumors
  • Head and Neck Anomalies
  • Pituitary Gland Disorders and Treatments
  • Vascular Malformations and Hemangiomas
  • Ear and Head Tumors
  • Nasal Surgery and Airway Studies
  • Head and Neck Cancer Studies
  • Trigeminal Neuralgia and Treatments
  • Voice and Speech Disorders
  • Bone Tumor Diagnosis and Treatments
  • Cardiac, Anesthesia and Surgical Outcomes
  • Telemedicine and Telehealth Implementation
  • Reconstructive Facial Surgery Techniques
  • Advanced MRI Techniques and Applications
  • Tumors and Oncological Cases

University of Colorado Anschutz Medical Campus
2023-2025

University of Colorado Denver
2023-2025

Mayo Clinic
2021-2024

Cochlear (France)
2022-2024

Cochlear (Australia)
2024

Michigan Ear Institute
2023

University of Colorado Boulder
2023

University of Colorado Hospital
2023

Mayo Clinic in Arizona
2021-2022

WinnMed
2021-2022

Objective: To present key data from a private marketing report that characterizes U.S. cochlear implant (CI) utilization, potential CI candidate and recipient population sizes, market growth. Patients: Individuals who may benefit recipients in the United States. Interventions: Cochlear implantation. Main outcome measures: size value. Results: As of 2015, cumulative 170,252 people (240,056 devices) had undergone implantation In year approximately 30% devices were implanted bilateral patients,...

10.1097/mao.0000000000003513 article EN Otology & Neurotology 2022-03-08

Objectives Evaluate the training background of surgeons performing high volumes cochlear implants (CIs) and estimate ratio providers trained in otology/neurotology (O&N) to number traditional CI candidates audiologists. Methods A retrospective review US surgeon registration data from a single manufacturer was performed determine volume based on training. The prevalence for CIs estimated census population compared with O&N providers. audiologists Bureau Labor Statistics American...

10.1002/lary.32037 article EN cc-by-nc-nd The Laryngoscope 2025-02-11

Objective: Characterize differences in adult cochlear implant outcomes and programming parameters for a straight (CI422/522) precurved (CI532) electrode array. Setting: Cochlear (CI) program at tertiary otologic center. Patients: Fifty-eight adults were included the study; 29 implanted with CI422 or CI522 CI532. Each CI532 recipient was matched to CI422/522 terms of age preoperative hearing thresholds comparison purposes. Main Outcome Measures: Consonant-Nucleus-Consonant (CNC) words, AzBio...

10.1097/mao.0000000000002366 article EN Otology & Neurotology 2019-08-30

The current study aims to characterize the natural history of sporadic vestibular schwannoma volumetric tumor growth, including long-term growth patterns following initial detection growth.Volumetric measurements from 3505 serial MRI studies were analyzed unselected consecutive patients undergoing wait-and-scan management at three tertiary referral centers between 1998 and 2018. Volumetric was defined as a change in volume ≥20%.Among 952 observation, 622 experienced with growth-free survival...

10.1093/neuonc/noab303 article EN Neuro-Oncology 2021-12-28

Previous cross-sectional studies analyzing quality of life (QOL) outcomes in patients with sporadic vestibular schwannoma (VS) have shown surprisingly little difference among treatment modalities. To date, there is limited prospective QOL outcome data available comparing baseline to posttreatment scores.Prospective longitudinal study using the disease-specific Penn Acoustic Neuroma Quality Life (PANQOL) scale.Large academic skull base center.Patients diagnosed unilateral VS who completed a...

10.1097/mao.0000000000002863 article EN Otology & Neurotology 2020-11-10

Objective: To characterize current awareness, perceptions, and literacy surrounding hearing loss among the adult population in United States. Study Design: National cross-sectional survey study. Setting: Patients: Adults between 50 80 years of age Results: Survey respondents included 1,250 adults ages years, including 500 who indicated at least moderate were using aids 750 denied having not aids. Only 9% patients able to correctly identify what constitutes a “normal” or “average” range for...

10.1097/mao.0000000000003473 article EN cc-by-nc-nd Otology & Neurotology 2022-01-20

To investigate the associations of age and year cochlear implantation (CI) with CI incidence among adults 20 years older residing in US.Deidentified implant data were acquired from prospective patient registries two manufacturers (Cochlear Americas Advanced Bionics), which supply an estimated 85% implants US. Population estimates for severe-to-profound sensorineural hearing loss by group extracted Census National Health Nutrition Examination Survey data.US centers.Adults who underwent...

10.1097/mao.0000000000003894 article EN Otology & Neurotology 2023-05-18

Describe audiologic outcomes in hearing preservation cochlear implantation (CI) using a precurved electrode array inserted an external sheath and evaluate association of positioning residual hearing.Retrospective review.Tertiary otologic center.Twenty-four adult patients who underwent CI with array.CI, intraoperative computed tomography (CT) OUTCOME MEASURES:: Audiologic measures (consonant-nucleus-consonant [CNC] words, AzBio sentences, low-frequency pure tone averages [LFPTA]) location...

10.1097/mao.0000000000002426 article EN Otology & Neurotology 2019-11-17

To evaluate the impact of prolonged auditory deprivation on speech perception outcomes in adult acquired single-sided deafness (SSD) cochlear implant (CI) recipients.Retrospective case series.Tertiary care academic center.Acquired SSD adults with and without duration (defined as >10 yr) who underwent CI between 2014 2019.CI.Consonant-nucleus-consonant (CNC) AzBio quiet scores within first year follow-up.A total 35 patients were evaluated, a median overall 2.4 years (interquartile range [IQR]...

10.1097/mao.0000000000003357 article EN Otology & Neurotology 2021-09-20

An otherwise healthy 24-year-old female presented with progressive right sided hearing loss. Otoscopy revealed a fleshy pink mass within the middle ear, but normal cranial nerve examination and nasopharyngeal scope. Audiometric testing demonstrated mild conductive MRI 7-cm centered at jugular foramen, extension into cerebellopontine angle without significant brainstem compression as well involvement of carotid space. The lesion was avidly enhancing central necrotic changes hypoperfusion on...

10.1055/s-0045-1803652 article EN Journal of Neurological Surgery Part B Skull Base 2025-02-01

Objective Present the rationale for development of a new, patient-facing vital sign adult hearing. Study Design Structured A3 process. Setting Fourteen virtual meetings and two in-person held between May 2021 June 2022. Main Outcome Measure(s) Identification refinement countermeasure to develop imbed hearing health Results Through rigorous, structured process, Hearing Health Collaborative identified refined qualities associated with public-facing loss. Specifically, such must embody five...

10.1097/mao.0000000000004523 article EN Otology & Neurotology 2025-05-08

Evaluate outcomes following primary endoscopic stapes surgery.Retrospective case series.Two tertiary otologic centers.Eighty-one ears with surgically confirmed fixation.Total stapedotomy or stapedectomy.Surgical and audiologic outcomes.Eighty-one subjects were included (60% women) a median age of 47.6 years (range, 19.1-73.6 yr). Etiologies hearing loss otosclerosis (96.3%), stapedial ankylosis (2.5%), congenital fixation (1.2%). The follow-up was 5.3 months 1.2-50.4 mo). 74.1% required...

10.1097/mao.0000000000001958 article EN Otology & Neurotology 2018-08-20

Objectives/Hypothesis: This study aims to 1) report revision cochlear implantation (CI) rates at a high-volume CI center, 2) describe classifications for CI, 3) analyze audiologic and surgical outcomes in patients who undergo 4) new subcategory of soft failures, named presumed failures. Study Design: Retrospective case series. Setting: Tertiary care otologic center. Patients: Adults children undergoing from 2005 2015. Main Outcome Measure: Type etiology failure, preoperative, postoperative...

10.1097/mao.0000000000002659 article EN Otology & Neurotology 2020-05-28

Objective To characterize the catchment area and patient profile of large cochlear implant (CI) centers in United States. Study Design Multi‐institutional retrospective case series. Setting Tertiary referral CI centers. Methods Patients who underwent surgery at 7 participating between 2015 2020 were identified. Patients’ residential zip codes used to approximate travel distances urban vs rural areas. Results Over 6‐year study period (2015‐2020), 6313 unique surgical procedures occurred (4529...

10.1177/01945998211070993 article EN Otolaryngology 2022-01-18

Phosphaturic mesenchymal tumors (PMTs) are neoplasms associated with tumor-induced osteomalacia. Patients typically present pathologic fractures in the setting of chronic hypophosphatemic hyperphosphaturic osteomalacia, as well gradual muscle weakness, bone pain, and difficulty walking. Because their rarity nonspecific symptomatology, phosphaturic often go undiagnosed for years. Even when discovered on imaging, can be diagnostically challenging radiologists. tend to small located nearly...

10.3174/ajnr.a7513 article EN cc-by American Journal of Neuroradiology 2022-05-19

The current study characterizes age and incidence of cochlear implantation among qualifying children with congenital bilateral profound hearing loss in the U.S.Deidentified data were acquired from prospectively collected patient registries two implant (CI) manufacturers (Cochlear Americas Advanced Bionics). Children <36 months old assumed to have sensorineural loss.U.S. CI centers.Children who received CIs.Cochlear implantation.Age at incidence.A total 4,236 underwent 2015 2019. median was...

10.1097/mao.0000000000003932 article EN Otology & Neurotology 2023-06-23

ABSTRACT Over the past two decades, there has been increasing interest in diagnosis and management of schwannomas inner ear including hearing rehabilitation with cochlear implants. However, tumor nomenclature classification within literature have variable oftentimes cumbersome. The term “intralabyrinthine schwannoma” is common use when describing these tumors but a potential source confusion given that people often “labyrinth” or “labyrinthine” to refer vestibular component only (i.e.,...

10.1097/mao.0000000000004363 article EN cc-by-nc-nd Otology & Neurotology 2024-10-28

Physical and mechanical properties of hemp seed The current study was conducted to investigate the effect moisture content on post-harvest physical in range 5.39 27.12% d.b. Results showed that most grain significant ( P &lt;0.05). results tests demonstrated loading rate not significant. However, rupture force energy &lt;0.01). lowest value obtained at highest (3mm min -1 )and Moreover, interaction effects were

10.2478/v10247-012-0031-9 article EN International Agrophysics 2012-04-01

To evaluate the magnetic resonance (MR) image artifact and distortion associated with two transcutaneous bone conduction implants currently available in United States.Cadaveric study.Two cadaveric head specimens (1 male, 1 female) were unilaterally implanted according to manufacturer guidelines underwent MR imaging (General Electric Siemens 1.5 T scanners) under following device conditions: (1) no device, (2) Cochlear Osia magnet headwrap, (3) without magnet, (4) MED-EL Bonebridge magnet....

10.1002/ohn.474 article EN Otolaryngology 2023-08-15

To measure disease-free, disease-specific, and overall survival among patients with T4aN0M0 mandibular gingival squamous cell carcinoma who were treated surgery alone.Case series chart review.Tertiary care center.A retrospective review was performed of all adult surgically an oral cavity composite resection between January 2005 March 2017. Among other data, patient preoperative characteristics recorded (eg, age, sex, smoking history, alcohol use, clinical stage); operative notes reviewed to...

10.1177/0194599818821892 article EN Otolaryngology 2019-01-01

To compare endoscopic and microscopic pediatric stapes surgery.Case series with chart review.Two academic otology practices.Surgical hearing outcomes were compared for consecutive children (<18 years) undergoing surgery. The main outcome measure was closure of the air-bone gap (ABG) to ≤20 dB.Twenty-two surgeries (17 stapedectomies, 4 stapedotomies, 1 mobilization) 52 (30 19 3 mobilizations) performed. Patient demographics, history ipsilateral middle ear surgery, revision surgery status...

10.1177/0194599819836679 article EN Otolaryngology 2019-03-12
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