Publications by authors named "Selleck A Morgan"
Article Synopsis
- - An estimated 1 in 200 newborns in the US are affected by congenital cytomegalovirus (cCMV), which can lead to hearing loss and neurological issues if not identified quickly.
- - Timely detection of cCMV through newborn screening allows for better diagnosis and management of its effects, reducing the risk of misdiagnosis and future complications.
- - Key health organizations advocate for universal newborn cCMV screening to improve health outcomes and provide proper intervention for affected infants.
Objectives: To examine the effects of scala tympani (ST) volume, cochlear duct length (CDL), and angular insertion depth (AID) on low-frequency hearing preservation for cochlear implant (CI) recipients of lateral wall electrode arrays.
Methods: A retrospective review identified 45 adult CI recipients of 24-, 28-, or 31.5-mm lateral wall electrode arrays with preoperative unaided hearing thresholds ≤45 decibel hearing level (dB HL) at 250 Hz.
Article Synopsis
- The study focuses on how otolaryngologists approach testing for congenital sensorineural hearing loss, specifically looking at cCMV infection and genetic testing methods.
- A survey of 20 otolaryngologists showed that 90% use cCMV and genetic tests, with 95% applying cCMV testing in their practices, and many pursue broader genetic screening if initial tests return negative.
- The findings also highlight reimbursement rates for these tests, revealing that a majority of respondents receive coverage for cCMV, genetic variant testing, and wider genetic screening.
Objective(s): FDA-approved indications for cochlear implantation include patients with severe-to-profound unilateral hearing loss (UHL) or asymmetric hearing loss (AHL); however, these indications are not covered for Medicare beneficiaries. We assessed the outcomes of cochlear implant (CI) use for older adults with UHL or AHL.
Methods: Eighteen older adults (≥65 years of age at surgery) with UHL/AHL participated in a prospective, longitudinal investigation evaluating outcomes of CI use.
Article Synopsis
- The study focused on cochlear implant recipients with unilateral hearing loss who possess functional acoustic hearing in the implanted ear, evaluating the effects of electric-acoustic stimulation (EAS) on their hearing abilities over time.
- Participants showed significant improvements in speech recognition scores and subjective hearing assessments when evaluated at multiple intervals post-activation (1, 3, and 6 months).
- Results indicated that adults with unilateral hearing loss and functional hearing saw notable enhancements in both objective speech recognition and subjective hearing experiences soon after starting EAS use, compared to their preoperative state.
Objective: Misplacement of electrode arrays in the internal auditory canal (IAC) presents a unique clinical challenge. Speech recognition is limited for cochlear implant (CI) users with misplaced arrays, and there are risks with revision surgery including facial and/or cochlear nerve injury.
Databases Reviewed: PubMed, Embase, and Scopus.
Objective: To detail a modified surgical technique for implantation of the Osia 2 Bone Conduction Hearing Aid (BCHA) system and to assess intra- and postoperative outcomes of this technique.
Methods: A retrospective review was performed for cases undergoing implantation of an Osia 2 BCHA at a tertiary academic medical center. Modifications were made to the surgical procedure including: horizontal or curvilinear incisions, placement of the osseointegrated screw slightly superior to the plane of the external auditory canal, and double layer wound closure.
Objective: Determine variables that influence post-activation performance for cochlear implant (CI) recipients who lost low-frequency acoustic hearing.
Methods: A retrospective review evaluated CNC word recognition for adults with normal to moderately severe low-frequency hearing (preoperative unaided thresholds of ≤70 dB HL at 250 Hz) who were implanted between 2012 and 2021 at a tertiary academic center, lost functional acoustic hearing, and were fit with a CI-alone device. Performance scores were queried from the 1, 3, 6, 12, and 24-month post-activation visits.
Article Synopsis
- The study examined how the positioning of electrode contacts in cochlear implant recipients affects their ability to recognize speech, especially for those using electric-acoustic stimulation (EAS).
- Sixty percent of participants had electrode contacts within their functional acoustic hearing range, but this was not linked to better speech recognition in quiet settings.
- However, closer alignment between the most apical electrode contact and the upper edge of residual hearing improved speech recognition in noisy environments, indicating that electrode placement can impact outcomes for EAS users.
Article Synopsis
- The study investigates and compares speech recognition performance in cochlear implant (CI) users and those using electric-acoustic stimulation (EAS) with different frequency mapping techniques.
- It involved thirteen adult participants completing a vowel recognition task with three types of maps: standard default maps, SG place-based maps, and OC SR-AI place-based maps.
- Results showed that OC SR-AI place-based mappings led to better speech recognition, particularly benefiting EAS users, indicating that personalized mapping based on cochlear structure may enhance performance.
Objective: After the role out of the COVID-19 vaccine in the United States, there has been increase in case reports of tinnitus attributed to the vaccine reported. We present our institution's experience over the initial 13 month period the vaccines were available.
Study Design: Retrospective chart review.
Approach to Cochlear Implantation in Patients With Ventriculoperitoneal Shunts.
Otolaryngol Head Neck Surg
June 2023
Objective: To evaluate the safety and outcomes of cochlear implantation (CI) in patients with ventriculoperitoneal (VP) shunts to inform clinical practice.
Study Design: Historical cohort study.
Setting: Tertiary referral centers.
Objectives: Determine the differences in presentation of intracanalicular and intralabyrinthine schwannomas.
Study Design: Retrospective chart review at a single center.
Setting: Tertiary academic referral center.
Update on MR Imaging of Soft Tissue Tumors of Head and Neck.
Magn Reson Imaging Clin N Am
February 2022
This article reviews soft tissue tumors of the head and neck following the 2020 revision of WHO Classification of Soft Tissue and Bone Tumours. Common soft tissue tumors in the head and neck and tumors are discussed, along with newly added entities to the classification system. Salient clinical and imaging features that may allow for improved diagnostic accuracy or to narrow the imaging differential diagnosis are covered.
View Article and Find Full Text PDFPediatric cochlear implantation for unilateral hearing loss is a new application of cochlear implants with Federal Drug Administration approval for this indication in 2019. The criteria for cochlear implant candidacy include evaluation of the etiology of hearing loss, the duration of deafness, child and family motivation, and the child's comorbidities. Studies have demonstrated significant improvements in speech perception in quiet and noise, sound localization, and speech and language development after implantation.
View Article and Find Full Text PDFAccuracy and patient perceived difficulty of utilizing ototopical antibiotic therapy.
Am J Otolaryngol
December 2021
Purpose: To examine how patients self-administer ear drops, ascertain their perceived difficulty in performing the task and determine if they are able to deliver the correct dosage.
Materials And Methods: This is a prospective cohort study performed in an otology outpatient clinic with twenty-one subjects with a condition requiring ototopical antibiotics. The number of ear drops applied as well as skills performed during ear drop application was measured.
Objective: Characterize the speech recognition and sound source localization of patients with unilateral Menière's disease who undergo labyrinthectomy for vertigo control with simultaneous or sequential cochlear implantation.
Databases Reviewed: PubMed, Embase, and Cochrane databases.
Methods: The search was performed on May 6, 2020.
Objective: 1) To compare vestibular schwannoma maximum linear dimensions and calculated volume with measured volume in accurately determining tumor volume and growth. 2) To determine natural growth history of vestibular schwannomas utilizing volumetric measurements in an observed patient population.
Study Design: Retrospective chart review.
Objective: Evaluate the incidence of cerebrospinal fluid leak following vestibular schwannoma surgery for mesh cranioplasty closure versus periosteal closure in the translabyrinthine approach. Determine nonsurgical variables associated with higher rates of cerebrospinal fluid leak following vestibular schwannoma surgery.
Study Design: Retrospective chart review.
Objective: Spontaneous cerebrospinal fluid (CSF) leaks are thought to arise due to elevated intracranial pressure which is distributed across the skull base, potentially predisposing the development of multifocal CSF leaks. The aims of this study are to evaluate the characteristics of this population at presentation and surgical outcomes.
Study Design: Retrospective case series.
Objective: Management of small vestibular schwannomas has evolved to where observation with interval imaging is an accepted treatment strategy. Loss of residual hearing is a known complication of observation. Magnetic resonance imaging (MRI) may provide critical information to assist in determining which tumors are at highest risk of hearing loss.
View Article and Find Full Text PDFObjective: The Food and Drug Administration (FDA) has recently raised concern regarding the safety of cochlear implantation in the setting of programmable cerebrospinal fluid shunts. The purpose of this study was to evaluate the outcomes and complications of cochlear implantation in children who have a cerebrospinal fluid shunt.
Study Design: Retrospective chart review.
Objectives: This article discusses the diagnosis, imaging workup, and management of a rare cause of pulsatile tinnitus: intraparotid arteriovenous malformation.
Patient: A single patient with a superficial temporal arteriovenous malformation diagnosed by carotid duplex causing pulsatile tinnitus that failed initial surgical management. Repeat imaging failed to identify a cause for the persistent tinnitus.
Objective: To determine the correlation between speech perception performance between pediatric sibling pairs with severe to profound sensory hearing loss receiving cochlear implants, and in cases of discordance in performance, determine which variables negatively impacted performance.
Study Design: Retrospective chart review.
Setting: Tertiary academic referral center.
Objective: To determine factors that influence low-frequency hearing preservation following pediatric cochlear implantation and compare hearing preservation outcomes between 20 and 24 mm depth lateral wall electrodes.
Study Design: Retrospective chart review.
Setting: Tertiary academic referral center.