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432 citation(s) found for "Carlson, Matthew L".

Development and validation of a new disease-specific quality of life instrument for sporadic vestibular schwannoma: the Mayo Clinic Vestibular Schwannoma Quality of Life Index
Carlson, Matthew L. , Lohse, Christine M. , Link, Michael J. , Tombers, Nicole M. , McCaslin, Devin L. , Saoji, Aniket A. , Hutchins, Melanie, Yost, Kathleen J.

Mayo Clinic

Journal of Neurosurgery | September 2, 2022 | Volume: 138 | Issue: 4 | Pages: 981-991

10.3171/2022.7.jns221104 | PMID 36057121 Get It

OBJECTIVE Facial nerve function, hearing preservation, and tumor control have been the primary benchmarks used to assess vestibular schwannoma (VS) outcomes. Acknowledging the frequent discrepancy between what physicians prioritize and what patients value, there has been increasing prioritization of patient-reported outcome measures when evaluating the impact of VS diagnosis and its treatment. Motivated by reported limitations of prior instruments used to assess quality of life (QOL) in patients with VS, the authors describe the development and validation of a new disease-specific QOL measure: the Vestibular Schwannoma Quality of Life (VSQOL) Index. METHODS The content development phase comprised identification of clinically important domains and prioritization of feelings or concerns individuals with VS may have. The validation phase encompassed determining how items were grouped into domains and eliminating redundant items. Both phases leveraged data from cross-sectional and longitudinal surveys, expertise from a multidisciplinary working group, and patients with a broad range of experiences with VS (n = 42 during content development and n = 263 during validation). Domain scores from the new instrument were assessed for reliability and correlation with other measures of similar constructs. RESULTS The VSQOL Index consists of 40 items that evaluate the impact of VS diagnosis and its management on QOL, treatment satisfaction, and employment and is estimated to take 8–10 minutes to complete. Domain scores range from 0 (worst) to 100 (best) and demonstrate excellent psychometric properties, including content, construct, and convergent validity and both internal consistency (Cronbach’s alphas 0.83 to 0.91) and test-retest reliability (reliability coefficients 0.86 to 0.96). CONCLUSIONS The VSQOL Index is a valid and reliable measure that overcomes several limitations of prior instruments, including omission or underrepresentation of domains that frequently impact well-being, such as pain, cognition, satisfaction or regret surrounding treatment decisions, and occupational limitations, to comprehensively evaluate the impact of VS diagnosis or its treatment on QOL.
Spontaneous Volumetric Tumor Regression During Wait-and-Scan Management of 952 Sporadic Vestibular Schwannomas
Marinelli, John P. , Killeen, Daniel E. , Schnurman, Zane , Nassiri, Ashley M. , Lees, Katherine A. , Lohse, Christine M. , Roland, Thomas, Golfinos, John G. , Link, Michael J. , Carlson, Matthew L. , Hunter, Jacob B. , Kondziolka, Douglas

Mayo Clinic

Otology & Neurotology | August 24, 2022 | Volume: 43 | Issue: 9 | Pages: e1034-e1038

10.1097/mao.0000000000003651 | PMID 36001695 Get It

Objective Spontaneous tumor shrinkage during wait-and-scan management of sporadic vestibular schwannoma is generally considered an uncommon phenomenon. However, most data informing this understanding stem from single-slice linear tumor measurements taken in the axial imaging plane. The objective of the current work was to characterize the regression capacity of sporadic vestibular schwannomas using volumetric tumor measurements. Study Design Retrospective cohort study using slice-by-slice, three-dimensional volumetric tumor measurements. Setting Three tertiary referral centers. Patients Patients with sporadic vestibular schwannoma. Interventions Wait-and-scan. Main Outcome Measures Regression-free survival rates with regression defined as a decrease of at least 20% of the tumor volume. Results Among 952 patients undergoing a total of 3,505 magnetic resonance imaging studies during observation, 123 experienced volumetric tumor regression after diagnosis at a median of 1.2 years (interquartile range, 0.6–2.9 yr). Volumetric regression-free survival rates (95% confidence interval; number still at risk) at 1, 3, and 5 years after diagnosis were 94% (92–95%; 662), 86% (83–89%; 275), and 78% (73–82%; 132), respectively. Among 405 patients who demonstrated an initial period of tumor growth but continued wait-and-scan management, 48 experienced volumetric regression at a median of 1.2 years (interquartile range, 0.8–2.6 yr) after initial growth. Volumetric regression-free survival rates at 1, 3, and 5 years after initial growth were 94% (92–97%; 260), 84% (79–89%; 99), and 75% (67–83%; 43), respectively. Ultimately, only 82 of the 952 patients studied showed exclusively volumetric tumor regression (i.e., without any periods of tumor growth) by the time of last follow-up. Conclusion Spontaneous volumetric tumor shrinkage during wait-and-scan management occurs more frequently than suggested by previous studies using linear tumor measurements and can even occur after previous episodes of documented tumor growth. These data further highlight the dynamic nature of vestibular schwannoma growth. To this end, the application of natural history data to patient management requires a nuanced approach that parallels the complex tumor behavior of vestibular schwannoma.
Geographic Distribution of Otolaryngology Training Programs and Potential Opportunities for Strategic Program Growth
Smith, Drew H. , Case, Hannah F., Quereshy, Humzah A. , Mecham, Jeffrey C. , Bowe, Sarah N. , Carlson, Matthew L. , Cordero, Joehassin , Case, Hannah , Bowe, Sarah N

Mayo Clinic

The Laryngoscope | August 23, 2022 | Volume: 133 | Issue: 7 | Pages: 1600-1605

10.1002/lary.30361 | PMID 36054023 Get It

ObjectiveTo characterize the geographic distribution of US otolaryngology residents based on geographical population density to determine current status and identify potential opportunities for otolaryngology residency program expansion.MethodsThe locoregional population of otolaryngology residency programs was analyzed (as defined by the US Census) and the number of resident trainees per 100,000 people in each region was calculated. Otolaryngology residency program location was determined by mailing address, and program size was determined by AAMC public data.ResultsThe average metropolitan city in the United States contained 2.07 otolaryngology trainees per 100,000 people. Cities with low trainee numbers per population included Phoenix, AZ (0.20 trainees per 100,000 people); Las Vegas, NV (0.26 per 100,000); Dallas, TX (0.26 per 100,000), Atlanta, GA (0.33 per 100,000); and Miami, FL (0.34 per 100,000). Comparing otolaryngology to other surgical subspecialties demonstrated similar distributions. Metropolitan centers with a population over 1 million without full academic representation in otolaryngology were also identified and included Charlotte, NC; Orlando, FL; Austin, TX; Providence, RI; Jacksonville, FL; Raleigh, NC; and Grand Rapids, MI.ConclusionStrategic residency training program expansion should be considered in cities that exhibit a low trainee to population ratio. Although many factors ultimately determine program expansion or development of new training programs, this study provides substantiated population data describing where expansion could be prioritized.Level of EvidenceNA Laryngoscope, 133:1600–1605, 2023
American Cochlear Implant Alliance Task Force Guidelines for Clinical Assessment and Management of Adult Cochlear Implantation for Single-Sided Deafness
Kocharyan, Arminé , Daher, Ghazal S. , Carlson, Matthew L. , Shapiro, William H., Snapp, Hillary , Firszt, Jill B. , Dillon, Margaret T.

Mayo Clinic

Ear & Hearing | August 22, 2022 | Volume: 43 | Issue: 6 | Pages: 1605-1619

10.1097/aud.0000000000001260 | PMID 35994570 Get It

The indications for cochlear implantation have expanded to include individuals with profound sensorineural hearing loss in the impaired ear and normal hearing (NH) in the contralateral ear, known as single-sided deafness (SSD). There are additional considerations for the clinical assessment and management of adult cochlear implant candidates and recipients with SSD as compared to conventional cochlear implant candidates with bilateral moderate to profound sensorineural hearing loss. The present report reviews the current evidence relevant to the assessment and management of adults with SSD. A systematic review was also conducted on published studies that investigated outcomes of cochlear implant use on measures of speech recognition in quiet and noise, sound source localization, tinnitus perception, and quality of life for this patient population. Expert consensus and systematic review of the current literature were combined to provide guidance for the clinical assessment and management of adults with SSD.
Co-Registration of pre- and post-Operative images after cochlear Implantation: A proposed technique to Improve cochlear visualization and localization of cochlear electrodes
Benson, John C. , Nassiri, Ashley M. , Saoji, Aniket A. , Carlson, Matthew L. , Lane, John I. , Benson, John

Mayo Clinic

The Neuroradiology Journal | August 19, 2022 | Volume: 36 | Issue: 2 | Pages: 194-197

10.1177/19714009221122180 | PMID 35985649 Get It

Background and Purpose After cochlear implantation, metallic artifact can obscure nearby structures on CT images, which is problematic in patients with facial nerve stimulation (FNS). This study evaluated the usefulness of co-registered pre- and post-operative examinations to evaluate the cochlear implant and adjacent structures. Materials and Methods A retrospective review was completed of consecutive patients that underwent CT imaging of the temporal bone before and after placement of a cochlear implant. Two blinded neuroradiologists independently reviewed all available examinations. All examinations were assessed for the presence or absence of dehiscence of the osseous ridge between the cochlea and facial nerve canal (FNC). Pre-operative and fused pre- and post-operative examinations were compared in their ability to visualize the osseous ridge using a 5-point Likert scale (ranging from 1 = unfused images were substantially superior to 5 = fused images were substantially superior). The electrode closest to the FNC were noted. Results Of 34 included patients, 13 (38.2%) were female and 21 (61.8%) were male; average age was 72.2. Seven patients (20.6%) had frank dehiscence between the cochlea and FNC. Fused images were superior to the post-operative study alone for assessing the integrity of the osseous partition between the cochlea and FNC and for reducing artifact from the electrode array (average Likert scores for both reviewers were 4.4 and 4.7). There was good agreement between reviewers in noting electrode closest to the FNC (concordance correlation coefficient=0.82). Conclusions Following cochlear implantation, co-registered pre- and post-operative CT images are superior to conventional images in assessing the anatomic relationship between the cochlea and FNC.
Developing a Social Media Ontology Across Otolaryngology and its Subspecialties
Flagg, Candace A. , Marinelli, John P. , Carlson, Matthew L. , Kezirian, Eric J. , Dion, Gregory R. , Abel, Kathryn M. Van , Bowe, Sarah N. , Van Abel, Kathryn M , Choby, Garret , Bowe, Sarah N , Kezirian, Eric J , Dion, Greg , Choby, Garret , Hamilton, Grant

Mayo Clinic

The Laryngoscope | August 17, 2022 | Volume: 133 | Issue: 7 | Pages: 1595-1599

10.1002/lary.30345 | PMID 37294045 Get It

ObjectiveTo determine how social media is used in the dissemination of new information within otolaryngology, and to emphasize the importance of standardizing Twitter hashtag use.MethodsBased on the 2019 SCImago journal rankings, the Twitter posts from the accounts of the top three journals covering each otolaryngology subspecialty were reviewed from August 1, 2020 to May 1, 2021. Twitter posts from the primary otolaryngology‐related academic societies were also reviewed during this timeframe. A list of hashtags was generated based on a combination of the most common otolaryngologic procedures and most commonly used hashtags in the social media space. This list was then crowd‐sourced with 10 fellowship‐trained otolaryngologists for each subspecialty.ResultsHashtag use among key stakeholders in the otolaryngology social media space varies considerably. For instance, #HNSCC, #HeadAndNeckSquamousCellCarcinoma, #HeadAndNeckCancer, #HeadAndNeckCancers, #OropharyngealCancer, #OropharynxCancer, #OralCancer, and #OPSCC were all commonly used hashtags to identify posts discussing oropharyngeal squamous cell carcinoma. #HeadAndNeckCancer and #HNSCC were most popular and used in a total of 85 and 65 tweets, respectively. #HeadAndNeckCancer was found alone in 32 out of 85 tweets (38%), whereas #HNSCC was found alone in 27 out of 65 tweets (42%). A standardized hashtag ontology covering all subspecialties within otolaryngology is proposed herein.ConclusionsAdoption of a standardized social media ontology within otolaryngology will improve information dissemination across all key stakeholders. Laryngoscope, 133:1595–1599, 2023
Retrosigmoid Approach Using Suboccipital Osteoplastic Craniotomy for Resection of Vestibular Schwannoma: 2-Dimensional Operative Video
Spear, Joshua A. , Bauman, Megan M. J. , Graffeo, Christopher S. , Nassiri, Ashley M. , Carlson, Matthew L. , Gompel, Jamie J. Van , Van Gompel, Jamie J , Bauman, Megan

Mayo Clinic

Operative Neurosurgery | August 16, 2022 | Volume: 23 | Issue: 3 | Pages: e171-e172

10.1227/ons.0000000000000300 | PMID 35972099 Get It

Implementation Strategy for Highly-Coordinated Cochlear Implant Care With Remote Programming: The Complete Cochlear Implant Care Model
Nassiri, Ashley M. , Saoji, Aniket A. , DeJong, Melissa D., Tombers, Nicole M. , Driscoll, Colin L. W., Neff, Brian A., Haynes, David S. , Carlson, Matthew L.

Mayo Clinic

Otology & Neurotology | August 15, 2022 | Volume: 43 | Issue: 8 | Pages: e916-e923

10.1097/mao.0000000000003644 | PMID 35970171 Get It

Objective To introduce and discuss implementation strategy for the Complete Cochlear Implant Care (CCIC) model, a highly-coordinated cochlear implant (CI) care delivery model requiring a single on-site visit for preoperative workup, surgery, and postoperative programming. Study Design Prospective, nonrandomized, two-arm clinical trial. Setting Tertiary referral CI center. Patients Adults who meet audiologic criteria for cochlear implantation. Interventions Cochlear implantation, coordinated care delivery, including remote programming. Main outcome measures Care delivery model feasibility and process implementation. Results Patients determined to be likely CI candidates based on routine audiometry are eligible for enrollment. The CCIC model uses telemedicine and electronic educational materials to prepare patients for same-day on-site consultation with CI surgery, same or next-day activation, and postoperative remote programming for 12 months. Implementation challenges include overcoming inertia related to the implementation of a new clinical workflow, whereas scalability of the CCIC model is limited by current hardware requirements for remote programming technology. A dedicated CCIC process coordinator is critical for overcoming obstacles in implementation and process improvement through feedback and iterative changes. Team and patient-facing materials are included and should be tailored to fit each unique CI program looking to implement CCIC. Conclusion The CCIC model has the potential to dramatically streamline hearing healthcare delivery. Implementation requires an adaptive approach, as obstacles may vary according to institutional infrastructure and policies.
Current Estimate of Hearing Aid Utilization in the United States
Nassiri, Ashley M. , Ricketts, Todd A. , Carlson, Matthew L.

Mayo Clinic

Otology & Neurotology Open | August 5, 2022 | Volume: 1 | Issue: 1 | Pages: e001

10.1097/ono.0000000000000001 | PMID 38549728 Get It

Objective: To present key data from a private marketing report that characterizes US hearing aid (HA) utilization, HA candidate and user population sizes, and HA pricing. Patients: HA candidates and users in the United States. Interventions: Hearing amplification. Main Outcome Measures: HA utilization, HA candidate and user population sizes, HA market size and value, and HA pricing. Results: In 2015, an estimated 8.5 million HA users accounted for a total of 15.4 million individual HA devices in the United States. Approximately 81% of HA users owned bilateral devices. In 2015, approximately 87% of devices were purchased as replacements by current HA users, while the remaining 13% of devices were purchased by new HA users. HA utilization rates among the candidate population approximated 21% in 2015, which was stable over the 3-year study period. In 2015, there was a net increase of 696,060 individuals who met HA candidacy criteria but did not undergo treatment with HAs, adding to the backlog of 31.0 million untreated HA candidates who existed before that year. The HA market was valued at $6.0 billion in 2015, with an average retail selling price of $1798 per device ($3596 per pair). In the same year, the average manufacturer selling price was $495 per device ($990 per pair), or nearly 1 quarter of the retail price. Conclusions: HAs are substantially under-utilized in the United States with an annually growing backlog of untreated HA candidates.
Salvage radiosurgery following subtotal resection of vestibular schwannomas: does timing influence tumor control?
Dhayalan, Dhanushan , Perry, Avital , Graffeo, Christopher S. , Tveiten, Øystein Vesterli , Casabella, Amanda M., Pollock, Bruce E. , Driscoll, Colin L. W., Carlson, Matthew L. , Link, Michael J. , Lund‐Johansen, Morten , Muñoz Casabella, Amanda

Mayo Clinic

Journal of Neurosurgery | August 5, 2022 | Volume: 138 | Issue: 2 | Pages: 420-429

10.3171/2022.5.jns22249 | PMID 35907189 Get It

OBJECTIVE The goal of microsurgical resection of vestibular schwannoma (VS) is gross-total resection (GTR) to provide oncological cure. However, a popular strategy is to halt the resection if the surgical team feels the risk of cranial nerve injury is imminent, achieving a maximally safe subtotal resection (STR) instead. The tumor remnant can then be treated with stereotactic radiosurgery (SRS) once the patient has recovered from the immediate postoperative period, or it can be followed with serial imaging and treated with SRS in a delayed fashion if residual tumor growth is seen. In this study, the authors evaluated the efficacy of this multimodality approach, particularly the influence of timing and dose of SRS on radiological tumor control, need for salvage treatment, and cranial nerve function. METHODS VS patients treated with initial microsurgery and subsequent radiosurgery were retrospectively included from two tertiary treatment centers and dichotomized depending on whether SRS was given upfront (defined as before 12 months) or later. Radiological tumor control was defined as less than 20% tumor volume expansion and oncological tumor control as an absence of salvage treatment. Facial and cochlear nerve functions were assessed after surgery, at the time of SRS, and at last follow-up. Finally, a systematic literature review was conducted according to PRISMA guidelines. RESULTS A total of 110 VS patients underwent SRS following microsurgical resection, with a mean preradiosurgical tumor volume of 2.2 cm3 (SD 2.5 cm3) and mean post-SRS follow-up time of 5.8 years (SD 4.1 years). The overall radiological tumor control and oncological tumor control were 77.3% and 90.9%, respectively. Thirty-five patients (31.8%) received upfront SRS, while 75 patients (68.2%) were observed for a minimum of 12 months prior to SRS. The timing of SRS did not influence the radiological tumor control (p = 0.869), the oncological tumor control (p = 0.560), or facial nerve (p = 0.413) or cochlear nerve (p = 0.954) function. An escalated marginal dose (> 12 Gy) was associated with greater tumor shrinkage (p = 0.020) and superior radiological tumor control (p = 0.020), but it did not influence the risk of salvage treatment (p = 0.904) or facial (p = 0.351) or cochlear (p = 0.601) nerve deterioration. CONCLUSIONS Delayed SRS after close observation of residuals following STR is a safe alternative to upfront SRS regarding tumor control and cranial nerve preservation in selected patients.