Back to Authors

Johns, Michael M.

https://orcid.org/0000-0002-6273-569X

Mayo Clinic

University of Southern California

Citations 9

Laryngeal Sensory Neuropathic Cough Is Not Associated With Membranous Vocal Fold Lesions
Razura, Diego E. , Khachikyan, Nyree, Johns, Michael M. , Shuman, Elizabeth A. , Shuman, Elizabeth , Gallagher, Tyler J.

The Laryngoscope | July 5, 2025 | Volume: 135 | Issue: 11 | Pages: 4296-4302

10.1002/lary.32391 Get It

ABSTRACT Objectives Examine the association between laryngeal sensory neuropathic cough (LSNC) and membranous vocal fold (VF) lesions. Understand the clinical presentation and challenges in diagnosing this idiopathic condition. Methods A retrospective review was conducted of adult patients with chronic cough (> 8 weeks) seen at a tertiary academic laryngology center from 2015 to 2020. Laryngeal videostroboscopy exams were reviewed. Demographics, cough severity index (CSI), and chronic cough duration were collected. Descriptive statistics, chi‐square tests, and multivariable logistic regression (adjusting for age, sex, race, and cough duration) were performed. Results Among 119 patients with LSNC (44.2%), the mean age was 59.8 (SD = 16.5) and they were primarily female (66.4%) and white (39.5%). The mean cough duration was 5.8 years (SD = 9.1), and the mean CSI was 20.8 (SD = 9.4). Most patients (88.2%) had a normal age‐appropriate laryngeal exam. On chi‐square analysis, cough duration was not associated with VF lesion presence ( p = 0.698). In univariable (OR: 1.00 [95% CI: 0.94–1.08]) and multivariable logistic regression (OR: 0.99 [95% CI: 0.93–1.07]), cough duration was not significantly associated with VF lesions. Conclusion LSNC was rarely associated with membranous VF lesions in this cohort. These findings suggest that chronic cough may not be a risk factor for developing VF lesions. Level of Evidence: 4.
Workforce Analysis of Laryngologists in the United States Between 1993 and 2022
Parikh, Neil U. , Zheng, Melissa , Meratı, Albert L., Johns, Michael M. , Shuman, Elizabeth A. , Shuman, Elizabeth

The Laryngoscope | December 18, 2024 | Volume: 135 | Issue: 5 | Pages: 1759-1766

10.1002/lary.31944 Get It

Introduction This study queries the US laryngology workforce geographic distribution and density and models laryngology workforce trends through 2050. Methods A national database of fellowship‐trained laryngologists (FTLs) and nonfellowship‐trained laryngologists (nFTLs) practicing primarily laryngology was formed by identifying laryngologists via internet search, with validation by regional laryngologists and senior laryngologists on this manuscript. Demographic variables included residency and/or fellowship graduation year, institutional affiliation, and practice zip code. US Census Bureau population data and projections were grouped by hospital referral region (HRR), as defined by the Dartmouth Healthcare Atlas. The National Resident Matching Program (NRMP) provided annual fellowship match data from 2012 to 2022. Results As of May 2023, there were 349 active laryngologists in the United States, including 303 FTLs. The median practice length for all laryngologists was 11 years. HRRs with the largest number of laryngologists were Manhattan, Boston, and Los Angeles, with 23, 16, and 14 respectively. One hundred and ninety‐four of 306 (63%) HRRs did not have an active, primary laryngologist. The national median density of people per laryngologist including HRRs with at least one laryngologist was 645,160. Assuming a 35‐year practice horizon prior to workforce exit and holding the 2018–2022 NRMP average of 18 fellows constant, the number of forecasted laryngologists by 2040 would be 568—an increase of 66%. Conclusions To date, no comprehensive database of practicing US laryngologists nor laryngology workforce forecast exists. Based on current benchmarks, the laryngology workforce would increase by 66% by 2040, ideally addressing the current dearth of laryngologists in low‐density areas. Level of Evidence NA Laryngoscope , 135:1759–1766, 2025
Gender and Racial Demographic Trends in the US Laryngology Workforce (1993–2022)
Parikh, Neil U. , Shuman, Elizabeth A. , Johns, Michael M. , Meratı, Albert L., Zheng, Melissa , Parikh, Neil , Shuman, Elizabeth

The Laryngoscope | October 9, 2024 | Volume: 135 | Issue: 2 | Pages: 794-800

10.1002/lary.31819 Get It

ObjectivesTo analyze demographic trends in laryngology fellowship training in the United States from 1993 to 2022, comparing periods before and after formalization of the fellowship within the National Resident Matching Program (NRMP) in 2012.MethodsA national database of fellowship‐trained laryngologists (FTLs) and non‐fellowship‐trained laryngologists (nFTLs) practicing primarily laryngology was created by methodically compiling laryngologists via Internet search, with corroboration by regional laryngologists and vetting by senior laryngologists on this manuscript. Demographic variables included residency and/or fellowship graduation year, gender, race and ethnicity inferred through individuals' photos and surnames. NRMP match data from 2012 to 2022 were obtained from the American Laryngological Association.ResultsAn average of 21 programs offered 23 positions in the NRMP match, with 14 programs (66.4%) filling 16 positions (68.8%) from 2012 to 2022. The 10‐year FTL growth rate decreased from 25.4% (1993–2002) to 10.5% and 6.6% in subsequent periods. In May 2023, there were 349 active laryngologists, including 303 FTLs, in the United States. A total of 189 (62.4%) FTLs were men, 114 (37.6%) were women; 201 (66.2%) were White, 102 (33.8%) were non‐White. Between the pre‐NRMP and post‐NRMP periods, the percentage of male FTLs decreased from 71.5% to 55.5%, female FTLs increased from 28.5% to 44.5%, and White FTLs decreased from 69.2% to 64.2%. Chi‐squared analysis yielded a statistically significant association between gender and training period for FTLs (p = 0.004), but no statistically significant difference between race and training period.ConclusionsThe post‐NRMP period saw an expansion of laryngology fellowships and workforce diversification, reflecting trends observed in otolaryngology and medicine overall.Level of EvidenceNA Laryngoscope, 135:794–800, 2025
Impact of BMI on Dyspnea and Need for Surgical Intervention in Bilateral Vocal Fold Immobility
Elsamna, Samer T. , Lin, Matthew E. , Smith, T.P. , Johns, Michael M. , Bensoussan, Yaël , Rutt, Amy, Bensoussan, Yael , Smith, Teagen, Rutt, Amy L.

Otolaryngology–Head and Neck Surgery | April 9, 2024 | Volume: 171 | Issue: 2 | Pages: 486-493

10.1002/ohn.753 Get It

AbstractObjectiveBilateral vocal fold paralysis (BVFP) and posterior glottic stenosis (PGS) are causes of bilateral vocal fold immobility (BVFI) and may cause shortness of breath, stridor, and need for surgical intervention. Although increased body mass index (BMI) is associated with restrictive breathing patterns in patients with normal upper airways, it is unclear how BMI impacts dyspnea and need for surgical intervention in BVFI patients.Study DesignRetrospective cohort study.SettingThree tertiary academic centers in the United States.MethodsDemographics, BMI, Dyspnea Index (DI), etiology, presence of tracheostomy and surgical intervention (dilation, tracheostomy, cordotomy, arytenoidectomy, open reconstruction) were collected. Primary outcomes included dyspnea measured by DI and need for surgery to improve airway. Linear regressions were performed to assess continuous outcomes. Mann‐Whitney U‐test was utilized to assess categorical outcomes.ResultsAmong 121 patients, 52 presented with BVFP and 69 with PGS. Previous neck surgery was the most common cause of BVFI (40.2%). 44.3% of patients received a tracheostomy. Through multivariate linear regression, increased BMI was significantly associated with increased DI in the entire cohort (β = .43, P = .016). Increased BMI was also associated with need for any surgical intervention (odds ratio [OR] = 1.07, 95% confidence interval [CI] = [1.01‐1.13]) in the overall cohort. When stratifying our data, BMI was only significantly associated with DI in BVFP (β = .496) and need for surgical intervention in PGS (OR = 1.11, 95% CI = [1.01‐1.21]), although a positive trend was seen in all analyses.ConclusionIncreased BMI may correlate with worsening dyspnea symptoms and need for surgical intervention in patients with BVFI. Weight‐loss‐related counseling may benefit symptom management.
Comparative Treatment Outcomes for Idiopathic Subglottic Stenosis: 5‐Year Update
Tierney, William S. , Huang, Li‐Ching , Chen, Sheau‐Chiann , Berry, Lynn D., Anderson, Catherine , Benninger, Michael S. , Blumin, Joel H. , Bryson, Paul C. , Castellanos, Paul F., Cohen, Seth M. , Crawley, Brianna K. , Dailey, Seth H. , Daniero, James J. , Alarcón, Alessandro de , Donovan, Donald T., Edell, Eric S. , Ekbom, Dale C. , Fink, Daniel S. , Franco, Ramon A. , Garrett, Catherine Gaelyn, Hoffman, Henry T. , Hogikyan, Norman D. , Howell, Rebecca J. , Johns, Michael M. , Kasperbauer, Jan L. , Khosla, Sid , Kinnard, Cheryl, Kupfer, Robbi A. , Langerman, Alexander , Lentz, Robert J. , Lorenz, Robert R. , Makani, Samir, Maldonado, Fabien , Matrka, Laura , McWhorter, Andrew J., Meratı, Albert L., Mori, Matthew , O’Dell, Karla , Postma, Gregory N. , Reder, Lindsay , Richardson, Brent E. , Rickman, Otis B. , Rosen, Clark A. , Rutter, Michael J. , Sandhu, Guri, Schindler, Joshua S. , Schneider, Glenn Todd , Shah, Rupali N., Sikora, Andrew G. , Sinard, Robert J. , Smith, Marshall E. , Smith, Libby J. , Soliman, Ahmed M. S. , Sveinsdóttir, Sigríður, Veivers, David , Verma, Sunil P., Weissbrod, Philip A. , Wootten, Christopher T. , Shyr, Yu , Francis, David O. , Daele, Douglas J. Van , Chen, Sheau-Chiann , Cohen, Seth M , Hoffman, Henry T , Weissbrod, Philip A , Amin, Milan R , Bock, Jonathan M. , Clary, Matthew S. , Guardiani, Elizabeth , Hillel, Alexander T. , Lott, David G. , Netterville, James L. , Ongkasuwan, Julina , Rohde, Sarah L. , Rohlfing, Matthew L. , Weinberger, Paul , Gelbard, Alexander

Otolaryngology–Head and Neck Surgery | January 19, 2023 | Volume: 168 | Issue: 6 | Pages: 1570-1575

10.1002/ohn.190 Get It

Abstract The North American Airway Collaborative (NoAAC) previously published a 3‐year multi‐institutional prospective cohort study showing variation in treatment effectiveness between 3 primary surgical techniques for idiopathic subglottic stenosis (iSGS). In this report, we update these findings to include 5 years of data evaluating treatment effectiveness. Patients in the NoAAC cohort were re‐enrolled for 2 additional years and followed using the prespecified published protocol. Consistent with prior data, prospective observation of 487 iSGS patients for 5 years showed treatment effectiveness differed by modality. Cricotracheal resection maintained the lowest rate of recurrent operation (5%), followed by endoscopic resection with adjuvant medical therapy (30%) and endoscopic dilation (50%). These data support the initial observations and continue to provide value to providers and patients navigating longitudinal decision‐making. Level of evidence: 2—prospective cohort study.
Vocal Fold Pathologies Among Undergraduate Singing Students In Three Different Genres
Bretl, Michelle , Gerhard, Julia , Rosow, David E. , Anis, Mursalin M. , Landera, Mario A., Libman, Dana R., Marchman, Judy O., Ragsdale, Frank Wayne, Moore, Stephannie, Ma, Ruixuan , Hoffman, Bari , Ivey, Chandra M. , Johns, Michael M. , Menton, Stacey M., Lloyd, Adam , Bretl, Michelle M , Anis, Mursalin , Ivey, Chandra , Lloyd, Adam T , Moore, Stephannie, Menton, Stacey M.

The Laryngoscope | December 26, 2022 | Volume: 133 | Issue: 9 | Pages: 2317-2324

10.1002/lary.30533 Get It

ObjectiveThis study aimed to compare the prevalence and incidence of vocal fold pathologies among undergraduate classical, musical theatre, and contemporary commercial music (CCM) students over two‐time points.MethodsThis study is part of a longitudinal investigation. Videostroboscopic examinations were rated, with consensus among three of four expert blinded raters confirming the presence of pathology. Association between genre of singer and the presence of pathology, interrater reliability, and intra‐rater reliability were calculated. Prevalence and incidence of pathologies were compared across genres.ResultsDuring first‐year evaluations, 32% of musical theatre, 18% of CCM, and 0% of classical students had vocal pathologies. The prevalence at third‐year evaluations showed 22% of classical, 39% of musical theatre, and 27% of CCM participants having vocal fold pathologies. The incidence of pathologies was 67% of musical theatre students compared to 22% of classical students and 27% of CCM students. The four raters demonstrated fair to moderate interrater agreement. Singing Voice Handicap Index‐10 scores were normal for CCM singers at both time points but elevated for musical theatre and classical singers.ConclusionNo classical singers were found to have pathology during first‐year evaluations, although CCM and musical theatre singers showed evidence of vocal fold pathologies. At third‐year evaluations, all three genres had an apparent increase in prevalence of pathologies. Implications of this study suggest that more time in the field and intense voice usage may lead to a greater risk of pathology for all singers, regardless of genre.Level of Evidence2 Laryngoscope, 133:2317–2324, 2023
Association of Social Determinants of Health with Time to Diagnosis and Treatment Outcomes in Idiopathic Subglottic Stenosis
Lee, Jaclyn , Huang, Li‐Ching , Berry, Lynn D., Anderson, Catherine , Amin, Milan R. , Benninger, Michael S. , Blumin, Joel H. , Bock, Jonathan M. , Bryson, Paul C. , Castellanos, Paul F., Chen, Sheau‐Chiann , Cohen, Seth M. , Crawley, Brianna K. , Dailey, Seth H. , Daniero, James J. , Alarcón, Alessandro de , Donovan, Donald T., Edell, Eric S. , Ekbom, Dale C. , Fink, Daniel S. , Franco, Ramon A. , Garrett, C. Gaelyn , Hoffman, Henry T. , Hogikyan, Norman D. , Howell, Rebecca J. , Hussain, Lena K., Johns, Michael M. , Kasperbauer, Jan L. , Khosla, Sid , Kinnard, Cheryl, Kupfer, Robbi A. , Langerman, Alexander , Lentz, Robert J. , Lorenz, Robert R. , Lowery, Anne S. , Makani, Samir, Maldonado, Fabien , Matrka, Laura , McWhorter, Andrew J., Meratı, Albert L., Mori, Matthew , O’Dell, Karla , Ongkasuwan, Julina , Postma, Gregory N. , Reder, Lindsay , Richardson, Brent E. , Rickman, Otis B. , Rosen, Clark A. , Rutter, Michael J. , Sandhu, Guri, Schindler, Joshua S. , Schneider, Glenn Todd , Shah, Rupali N., Sikora, Andrew G. , Sinard, Robert J. , Smith, Marshall E. , Smith, Libby J. , Soliman, Ahmed M. S. , Sveinsdóttir, Sigríður, Daele, Douglas J. Van , Veivers, David , Verma, Sunil P., Weissbrod, Philip A. , Wootten, Christopher T. , Shyr, Yu , Francis, David O. , Cohen, Seth M , Dailey, Seth H , Hoffman, Henry T , Lott, David G , Mori, Matthew , Ongkasuwan, Julian , Richardson, Brent E , Gelbard, Alexander , Chen, Sheau-Chiann , Weissbrod, Philip A , Clary, Matthew S. , Guardiani, Elizabeth , Hillel, Alexander T. , Lott, David G. , Mannion, Kyle , Netterville, James L. , Rohde, Sarah L. , Weinberger, Paul , Gelbard, Alexander , Amin, Milan R

Annals of Otology, Rhinology & Laryngology | February 25, 2021 | Volume: 130 | Issue: 10 | Pages: 1116-1124

10.1177/0003489421995283 Get It

Objectives: To examine whether social determinants of health (SDH) factors are associated with time to diagnosis, treatment selection, and time to recurrent surgical intervention in idiopathic subglottic stenosis (iSGS) patients. Methods: Adult patients with diagnosed iSGS were recruited prospectively (2015-2017) via clinical providers as part of the North American Airway Collaborative (NoAAC) and via an online iSGS support community on Facebook. Patient-specific SDH factors included highest educational attainment (self-reported), median household income (matched from home zip code via U.S. Census data), and number of close friends (self-reported) as a measure of social support. Main outcomes of interest were time to disease diagnosis (years from symptom onset), treatment selection (endoscopic dilation [ED] vs cricotracheal resection [CTR] vs endoscopic resection with adjuvant medical therapy [ERMT]), and time to recurrent surgical intervention (number of days from initial surgical procedure) as a surrogate for disease recurrence. Results: The total 810 participants were 98.5% female, 97.2% Caucasian, and had a median age of 50 years (IQR, 43-58). The cohort had a median household income of $62 307 (IQR, $50 345-$79 773), a median of 7 close friends (IQR, 4-10), and 64.7% of patients completed college or graduate school. Education, income, and number of friends were not associated with time to diagnosis via multivariable linear regression modeling. Univariable multinominal logistic regression demonstrated an association between education and income for selecting ED versus ERMT, but no associations were noted for CTR. No associations were noted for time to recurrent surgical procedure via Kaplan Meier modeling and Cox proportional hazards regression. Conclusions: Patient education, income, and social support were not associated with time to diagnosis or time to disease recurrence. This suggests additional patient, procedure, or disease-specific factors contribute to the observed variations in iSGS surgical outcomes.
Comparative Treatment Outcomes for Patients With Idiopathic Subglottic Stenosis
Gelbard, Alexander , Anderson, Catherine , Berry, Lynne D. , Amin, Milan R. , Benninger, Michael S. , Blumin, Joel H. , Bryson, Paul C. , Castellanos, Paul F., Chen, Sheau‐Chiann , Cohen, Seth M. , Crawley, Brianna K. , Dailey, Seth H. , Daniero, James J. , Alarcón, Alessandro de , Donovan, Donald T., Edell, Eric S. , Ekbom, Dale C. , Fernandes‐Taylor, Sara , Fink, Daniel S. , Franco, Ramon A. , Garrett, C. Gaelyn , Guardiani, Elizabeth , Hoffman, Henry T. , Hogikyan, Norman D. , Howell, Rebecca J. , Huang, Li‐Ching , Hussain, Lena K., Johns, Michael M. , Kasperbauer, Jan L. , Khosla, Sid , Kinnard, Cheryl, Kupfer, Robbi A. , Langerman, Alexander , Lentz, Robert J. , Lorenz, Robert R. , Lowery, Anne S. , Makani, Samir, Maldonado, Fabien , Mannion, Kyle , Matrka, Laura , McWhorter, Andrew J., Meratı, Albert L., Mori, Matthew , Netterville, James L. , O’Dell, Karla , Ongkasuwan, Julina , Postma, Gregory N. , Reder, Lindsay , Rohde, Sarah L. , Richardson, Brent E. , Rickman, Otis B. , Rosen, Clark A. , Rutter, Michael J. , Sandhu, Guri, Schindler, Joshua S. , Schneider, Glenn Todd , Shah, Rupali N., Sikora, Andrew G. , Sinard, Robert J. , Smith, Marshall E. , Smith, Libby J. , Soliman, Ahmed M. S. , Sveinsdóttir, Sigríður, Daele, Douglas J. Van , Veivers, David , Verma, Sunil P., Weissbrod, Philip A. , Wootten, Christopher T. , Shyr, Yu , Francis, David O. , Chen, Sheau-Chiann , Ongkasuwan, Julian , Cohen, Seth M , Hoffman, Henry T , Richardson, Brent E , Gelbard, Alexander , Weissbrod, Philip A , Bock, Jonathan M. , Clary, Matthew S. , Hillel, Alexander T. , Lott, David G. , Weinberger, Paul , Amin, Milan R

JAMA Otolaryngology–Head & Neck Surgery | October 31, 2019 | Volume: 146 | Issue: 1 | Pages: 20

10.1001/jamaoto.2019.3022 Get It