Understanding Performers' Perspectives on Access to Care and Support for Voice Injuries: A Survey Study

INTRODUCTION

Previous studies show that performers face higher risk of voice injury and experience greater impairment compared to nonperformers. Understanding the factors influencing support for performers is important for improving outcomes.

METHODS

An anonymous online survey was distributed to a target audience of performers with past voice injury, inquiring about their understanding of voice injury "red flags," access to voice care support resources, treatment adherence, and comfort discussing injury with others. Responses were analyzed considering various clinicodemographic factors and aspects related to care and treatment.

RESULTS

The survey was completed by 151 performers with self-reported history of voice injury, representing multiple performance genres. Participants commonly sought help from a general otolaryngologist (52; 34.44%), laryngologist (41; 27.15%), or voice teacher (40; 26.49%) and treatments included voice therapy, rest, medication, and surgery, with a majority reporting high treatment adherence (129; 87.16%), a statistically significant factor in resolving symptoms. Those with partial or nonadherence cited financial/insurance barriers, scheduling/availability conflicts, or treatment dissatisfaction. Participants reported high awareness of voice injury "red flags" (mean 86.80; SD 18.87%), and moderate access to voice care tools/resources (mean 74.76; SD 29.1) and a voice team (mean 71.23; SD 36.52), but low support from management/production teams (mean 50.69; SD 37.23). Several expressed a desire for better education about preventive care (mean 70.06; SD 37.78). Comfort levels in discussing voice injuries varied across social contexts, but those working with voice teachers were more comfortable discussing their voice problems with colleagues and peers.

CONCLUSION

This study explores performers' perspectives on accessing care for voice injuries and emphasizes the importance of increased preventive education to address the ongoing stigma surrounding voice injuries and to foster a supportive environment for performers seeking help. Additionally, the study highlights the role of voice professionals in both providing and advocating for support systems for performers with voice injury.

LEVEL OF EVIDENCE: 4

Prospective Outcomes of Microlaryngoscopy Versus Office Laser Photoangiolysis for Vocal Fold Polyps

OBJECTIVE(S)

The objective of this study is to compare treatment outcomes for vocal fold polyps (VFPs) between operating room microlaryngoscopy and office-based photoangiolysis with the potassium titanyl phosphate (KTP) laser.

METHODS

Prospective nonrandomized cohort study of patients with VFPs undergoing microlaryngoscopy ("OR group") or KTP laser photoangiolysis ("KTP group"). Voice outcomes (patient-reported outcome measures [Voice Handicap Index-10 (VHI-10) and Singing VHI-10 (SVHI-10)], auditory-perceptual measures [Consensus Auditory-Perceptual Evaluation of Voice (CAPE-V)], videostroboscopic characteristics [Voice-Vibratory Assessment of Laryngeal Imaging (VALI)], and acoustic and aerodynamic measures) were performed at baseline and regular intervals after intervention.

RESULTS

Forty-four subjects (17 OR group, 27 KTP group) with VFPs were enrolled. Mean VHI-10 significantly improved from baseline to each follow-up interval in both groups, except for the 1-2-week interval in the OR group. Mean SVHI-10 improved for both groups at some intervals. Growth curve models and time-to-event analyses for patient-reported outcomes did not differ between groups. There were significant improvements in all categories of auditory-perceptual voice quality and some categories of videostroboscopic characteristics in both groups. No significant trends were identified in acoustic and aerodynamic measures. Improvements in most outcomes did not significantly differ between groups or based on polyp size. There were no major complications.

CONCLUSIONS

Significant improvements in patient-reported voice outcomes measures, auditory-perceptual voice evaluation, and videostroboscopic characteristics occur following surgical treatment of vocal fold polyps with either microlaryngoscopy or office-based KTP laser. Long-term voice outcomes do not significantly differ between treatment modalities.

LEVEL OF EVIDENCE

Level 3 Laryngoscope, 2024.

Quality of Office-based Procedure Training During Laryngology Fellowship

OBJECTIVES

The primary objective was to assess the perspectives of recent laryngology fellowship graduates on office-based procedure training, with a secondary objective to compare this with previous research on perspectives of fellowship directors.

METHODS

Recent laryngology fellowship graduates were surveyed via an online survey platform regarding post-fellowship practice and various aspects of office-based procedure training, including perceived competence, mentorship, and barriers.

RESULTS

There were 51 respondents. Seventy-six percent of respondents felt they "definitely" received adequate office procedure training. Number of procedures as primary surgeon was significantly associated with perception of adequate training (OR 1.54, 95% CI: 1.08-2.19, p = 0.018) and high post-fellowship office procedure volume (OR 1.56, 95% CI: 1.02-2.39, p = 0.040). Fellows reported a lower percentage of procedures as primary surgeons compared with program directors (46.8% vs. 61.9%, p = 0.028). Fellows and directors agreed that informal debriefs were more commonly employed than more structured training elements such as checklists and simulators. Of nine office procedures, laryngeal electromyography, KTP laser, and transnasal esophagoscopy had the greatest decreases in practice after training.

CONCLUSION

Although most recent laryngology fellowship graduates endorse adequate office-based procedure training, a range of individual experiences exists, and office procedure volume, both overall and across individual procedures, may decrease after fellowship. Fellows performing office procedures as primary surgeons may be linked to perceived quality of training and post-fellowship volume.

LEVEL OF EVIDENCE

NA Laryngoscope, 134:1802-1806, 2024.

A deep learning pipeline for automated classification of vocal fold polyps in flexible laryngoscopy

PURPOSE

To develop and validate a deep learning model for distinguishing healthy vocal folds (HVF) and vocal fold polyps (VFP) on laryngoscopy videos, while demonstrating the ability of a previously developed informative frame classifier in facilitating deep learning development.

METHODS

Following retrospective extraction of image frames from 52 HVF and 77 unilateral VFP videos, two researchers manually labeled each frame as informative or uninformative. A previously developed informative frame classifier was used to extract informative frames from the same video set. Both sets of videos were independently divided into training (60%), validation (20%), and test (20%) by patient. Machine-labeled frames were independently verified by two researchers to assess the precision of the informative frame classifier. Two models, pre-trained on ResNet18, were trained to classify frames as containing HVF or VFP. The accuracy of the polyp classifier trained on machine-labeled frames was compared to that of the classifier trained on human-labeled frames. The performance was measured by accuracy and area under the receiver operating characteristic curve (AUROC).

RESULTS

When evaluated on a hold-out test set, the polyp classifier trained on machine-labeled frames achieved an accuracy of 85% and AUROC of 0.84, whereas the classifier trained on human-labeled frames achieved an accuracy of 69% and AUROC of 0.66.

CONCLUSION

An accurate deep learning classifier for vocal fold polyp identification was developed and validated with the assistance of a peer-reviewed informative frame classifier for dataset assembly. The classifier trained on machine-labeled frames demonstrates improved performance compared to the classifier trained on human-labeled frames.

LEVEL OF EVIDENCE: 4

De Novo Granuloma of the Membranous Vocal Fold: A Marker of Occult Malignancy

OBJECTIVE

De novo occurrence of granuloma (granulation tissue) on the membranous vocal fold is not readily explained by usual causes of granuloma at the vocal process. We describe a series of patients.

STUDY DESIGN

Case series.

SETTING

Single academic institution.

METHODS

Cases were identified over a 16-year period. All patients exhibited granulation tissue on pathology. Demographic details, presentation, treatment, histology, and clinical outcomes were recorded.

RESULTS

Five patients (mean age: 74.0 ± 6.1 years, 40.0% male, 40.0% former smokers) underwent a biopsy. Persistent or recurrent granulation led to a second biopsy in 4 patients an average of 1423.5 days later, revealing a new diagnosis of squamous cell carcinoma (SCC) in situ in one and mild dysplasia in another. Further persistence or recurrence led to a third biopsy or excision an average of 302.3 days later in 3 patients, demonstrating SCC in situ in 1. An average of 2.5 biopsies were required with a mean time to SCC in situ diagnosis of 919.5 days from presentation. Two patients continued to demonstrate persistent granulation tissue on histology.

CONCLUSION

The membranous vocal fold is an atypical location for granuloma and portends a risk of occult malignancy. The occurrence of de novo granuloma at this site should prompt close long-term clinical surveillance with a low threshold for biopsy. Consideration should be given to tissue collection in the operating room to adequately sample the lesion's base. Concern should persist even after a negative biopsy, and serial observation with repeat biopsy as needed should be pursued.

Return to Vocal Performance Following Microlaryngoscopy in Singers

INTRODUCTION

Although microlaryngoscopy has been recognized to be effective in addressing lesions in vocal performers, no detailed information regarding return to performance (RTP) following surgery exists. We describe our experience and offer proposals to establish standardized criteria for RTP among vocal performers.

METHODS

Records for adult vocalists who underwent microlaryngoscopy for benign vocal fold (VF) lesions and had a clearly documented RTP date between 2006 and 2022 were reviewed. Patient demographics, diagnoses, interventions, and postsurgical care before and after RTP were described. The need for medical and procedural interventions and rate of reinjury were used to determine the success of RTP.

RESULTS

Sixty-nine vocal performers (average age: 32.8 years, 41 [59.4%] female, 61 [88.4%] musical theater) underwent surgery for 37 (53.6%) pseudocysts, 25 (36.2%) polyps, 5 (7.2%) cysts, 1 (1.4%) varix, and 1 (1.4%) mucosal bridge. Fifty-seven (82.6%) underwent voice therapy. The average time to RTP was 65.0 ± 29.8 days. Prior to RTP, six (8.7%) experienced VF edema requiring oral steroids and one (1.4%) underwent a VF steroid injection. Within 6 months following RTP, eight (11.6%) received oral steroids for edema and three underwent procedural interventions (two steroid injections for edema/stiffness, one injection augmentation for paresis). One patient experienced pseudocyst recurrence.

CONCLUSIONS

Return to vocal performance at an average of 2 months following microlaryngoscopy for benign lesions appears overwhelmingly successful, with low rates of need for additional intervention. There is a need for validated instruments to better measure performance fitness to refine and possibly accelerate RTP.

LEVEL OF EVIDENCE

4 Laryngoscope, 134:329-334, 2024.

Correlation Between Laryngoscopic Appearance and Histopathology in Vocal Fold Cysts

OBJECTIVES/HYPOTHESIS

Cysts are benign vocal fold lesions typically divided into mucous retention or epidermoid subtypes. The conventional paradigm that the former are translucent and the latter opaque fails to encompass the heterogeneity of cyst appearance on laryngoscopy. This study aims to characterize the relationships between clinical cyst characteristics and histopathology.

STUDY DESIGN

Retrospective cohort METHODS: Clinicodemographic data, videostroboscopy findings, and histopathology results were retrospectively reviewed for adults who underwent surgical excision of vocal fold cysts at our institution between 2006 and 2021.

RESULTS

Diagnostic histopathologic material was available for 69 patients (age: 50.4 ± 15.1 years, 68.1% female). Clinically, most cysts were opaque (69.6%) and located at the vibratory margin (82.6%). 11.6% were infraglottic. Significant associations existed between cyst location and epithelial type, with infraglottic cysts and those at the superior surface more commonly exhibiting ductal (P = 0.003) and squamous (P = 0.002) epithelium, respectively. Cyst opacity did not correlate with histopathology (P = 0.415). Epidermoid cysts were more likely to exhibit clinical inflammation (P = 0.002).

CONCLUSIONS

Perception of Proton Pump Inhibitor Side Effects Among Members of the American Broncho-Esophagological Association

OBJECTIVES

To investigate awareness of proton pump inhibitor (PPI) side effects and the resulting changes in reflux mana management among members of the American Broncho-Esophagological Association (ABEA) caring for adult patients in light of increasing concern for PPIs long-term adverse effects.

STUDY DESIGN

Cross-sectional survey study METHODS: Online surveys were electronically distributed to ABEA members assessing awareness of PPI side effects and current practice in reflux management.

RESULTS

374 ABEA members were contacted, of whom, 43 (11.5%) completed the survey. The majority of respondents (94.1%) selected laryngology as their principal focus. The entire cohort warned their patients about PPI side effects, with highest concern for osteoporotic risk. Most respondents (88.2%) had changed their PPI prescription frequency in light of recent studies on PPI side effects, with 55.9% avoiding PPI prescription and 94.1% limiting the duration of PPI courses. Instead of PPIs, 73.5% of responders prescribe H2-receptor blockers. The primary reasons for starting patients on PPIs were typical gastroesophageal reflux symptoms (47.1%), followed by laryngopharyngeal reflux symptoms (41.2%), and endoscopic findings suspicious for reflux (11.8%). Finally, the majority of respondents (82.4%) had referred at least one patient for surgical management of gastroesophageal reflux in the past year.

CONCLUSIONS

The majority of surveyed ABEA members were concerned about reports of PPI adverse effects and had modified their prescription patterns as a result. Avoidance of PPI recommendation was common, along with the preference for H2 blockers in the management of GERD and LPR. PPI side effects of greatest concern to broncho-esophagologists treating adult patients were osteoporosis, renal dysfunction and dementia.

LEVEL OF EVIDENCE: 5

Performers With History of Voice Injury: A Survey Study of Treatment Outcomes and Vocal Function

INTRODUCTION

Past studies show that performers are more susceptible to voice injury, have higher incidence of injury, and experience greater vocal impairment than non-performers. Despite literature demonstrating otherwise, there remains fear and stigma that voice injury is a career-ending circumstance. Much of this is due to a lack of information about post-treatment vocal function.

METHODS

An anonymous online survey was distributed via email, flyer, and social media to a target audience of performers with a history of voice injury. It inquired about occupation, vocal symptoms, professionals consulted, and treatment adherence. Outcome measures included ability to perform, resolution of symptoms, and attitudes about their voices after voice injury. Findings were analyzed descriptively with statistical analysis to determine factors that may be related to favorable outcomes.

RESULTS

The survey was completed by 151 performers representing a range of genres, including musical theatre, classical, and popular genres. The most reported vocal symptoms were decreased range, singing voice quality changes, increased singing effort, and vocal fatigue. Most initially sought care from an otolaryngologist, laryngologist, or voice teacher. Diagnoses and recommendations varied, but those who adhered to treatment were more likely to report resolution of voice symptoms (P = 0.025). Those with symptoms for 2-4 weeks reported greater vocal confidence than those with a longer symptom duration (P = 0.0251). Performers working with a voice teacher were more likely to find treatment helpful (P = 0.0174). Those with neurogenic voice conditions reported less vocal reliability than participants with other pathologies (P = 0.0155).

CONCLUSION

The majority of participants continued to perform, reported resolved or improved voice symptoms after treatment, and reported positive attitudes about their voices, regardless of their injury or current presence or absence of pathology on exam. Findings of this study highlight a need for continued outreach to voice teachers, education programs, and production teams about vocal function after voice injury.

LEVEL OF EVIDENCE: 4

Increased Incidence of Ulcerative Laryngitis During Spring 2022 Omicron-Variant Wave of COVID19

OBJECTIVES

Ulcerative laryngitis is a distinctive condition which typically follows illness with severe cough, and is characterized by dysphonia, ulcerative lesions of the vocal folds, and a prolonged clinical course. We present four patients with ulcerative laryngitis who presented in close succession amid the surge in omicron-variant COVID19 cases.

STUDY DESIGN

Retrospective review.

METHODS

Patient records for patients with ulcerative laryngitis from April and May 2022 were reviewed and compared with patients who presented with the same diagnosis from January 2017 through March 2022. Incidence, patient demographics, occupation, vaccination status, disease history, and treatment were obtained and compared.

RESULTS

Four patients presented with ulcerative laryngitis over six weeks. Compared to the previous 4 years, this represented an eight-fold increase in monthly incidence. Average time from symptom onset to presentation was 15 days. All patients presented with dysphonia, with an average VHI10 of 23 and SVHI10 of 28. Two patients were COVID positive, one negative, and one had unknown COVID status. Three patients were fully vaccinated while one patient had only received one dose. Treatments included voice rest, steroids, antibiotics, antireflux medicine, and cough suppressants. Clinical course tended to be shorter and outcomes similar to the comparison group.

CONCLUSION

The incidence of ulcerative laryngitis appeared to increase markedly with the prevalence of omicron-variant COVID19. Potential explanations include the apparent upper airway focus of omicron infection in contrast with prior variants and/or change in COVID19 infection characteristics in a vaccinated population.

Performers' Perceptions of Vocal Function During Oral Steroid Treatment of Vocal Fold Edema

OBJECTIVES

Acute vocal fold edema (VFE) is often a consequence of illness, allergy, or voice overuse, causing dysphonia. Although VFE typically resolves with voice rest and treatment of predisposing causes, oral glucocorticoids are often considered for performers with imminent performance demands. There are limited data about performers' perceptions of vocal change during treatment and how this relates to their ability to perform. This study aims to examine performers' self-perceptions of vocal function with steroid treatment.

METHODS

Fifty-five performers (34 F; 21 M) diagnosed with VFE who chose treatment with a 6-day methylprednisolone taper were prospectively assessed. They completed the Evaluation of the Ability to Sing Easily (EASE) and reported on their voice use, regimen, performance obligations, and ability to perform. Findings were compared between Day 1 and Day 6 using paired t-tests and nonparametric Wilcoxon signed-rank tests.

RESULTS

Nearly all subjects completed scheduled performances without interruption. Following treatment, all subscales of the EASE were decreased at Day 6 (Vocal Function 29.78-20.59; Pathologic Risk Indicator 26.60-17.33; Vocal Concerns 6.10-4.20). These differences were statistically significant (p < 0.0001) and greater in subjects with performances scheduled and subjects who consistently completed vocal warmups. These findings demonstrate significant improvement in several facets of performers' self-perception of function.

CONCLUSION

Subjects reported significant improvement in vocal function with oral steroid treatment and were able to meet performance obligations. It remains important that steroids are not prescribed without laryngeal examination. Examination should be repeated when dysphonia persists, recurs swiftly, or when patients seek repeated treatment, as there may be increased risk of adverse outcomes, and continued steroid use may mask underlying chronic pathology that is best treated by other means.

LEVEL OF EVIDENCE

4 Laryngoscope, 132:2434-2441, 2022.

Automatic classification of informative laryngoscopic images using deep learning

Objective

This study aims to develop and validate a convolutional neural network (CNN)‐based algorithm for automatic selection of informative frames in flexible laryngoscopic videos. The classifier has the potential to aid in the development of computer‐aided diagnosis systems and reduce data processing time for clinician‐computer scientist teams.

Methods

A dataset of 22,132 laryngoscopic frames was extracted from 137 flexible laryngostroboscopic videos from 115 patients. 55 videos were from healthy patients with no laryngeal pathology and 82 videos were from patients with vocal fold polyps. The extracted frames were manually labeled as informative or uninformative by two independent reviewers based on vocal fold visibility, lighting, focus, and camera distance, resulting in 18,114 informative frames and 4018 uninformative frames. The dataset was split into training and test sets. A pre‐trained ResNet‐18 model was trained using transfer learning to classify frames as informative or uninformative. Hyperparameters were set using cross‐validation. The primary outcome was precision for the informative class and secondary outcomes were precision, recall, and F1‐score for all classes. The processing rate for frames between the model and a human annotator were compared.

Results

The automated classifier achieved an informative frame precision, recall, and F1‐score of 94.4%, 90.2%, and 92.3%, respectively, when evaluated on a hold‐out test set of 4438 frames. The model processed frames 16 times faster than a human annotator.

Conclusion

The CNN‐based classifier demonstrates high precision for classifying informative frames in flexible laryngostroboscopic videos. This model has the potential to aid researchers with dataset creation for computer‐aided diagnosis systems by automatically extracting relevant frames from laryngoscopic videos.

Patterns of Recurrence of Phonotraumatic Vocal Fold Lesions Suggest Distinct Mechanisms of Injury

OBJECTIVES/HYPOTHESIS

To examine patterns of recurrence of benign phonotraumatic vocal fold lesions over time for insights into pathophysiology.

STUDY DESIGN

Case series with mathematical modeling.

METHODS

Medical records and stroboscopic exams of adults who underwent microlaryngoscopic resection of phonotraumatic vocal fold lesions over a 13-year period were reviewed for time to recurrence after surgery. Uniform and log-normal probability distributions were fitted to the time to recurrence curves for vocal fold polyps, midfold masses, and pseudocysts. Model fits were compared using the Akaike information criterion corrected, a standard measure of the goodness of fit. Stochastic simulations were used to verify that the mechanistic hypotheses were concordant with the selected probability distributions and empiric data.

RESULTS

Of 567 patients who underwent microlaryngoscopic resection, 65 had a recurrence (16 polyps, 14 midfold masses, and 35 pseudocysts). Midfold mass and pseudocyst recurrences were predominantly seen in younger women. Polyps were best fit by a uniform distribution rather than log-normal, whereas midfold masses and pseudocysts were better fit by log-normal rather than uniform. Stochastic simulations suggest that polyps recur sporadically according to a paroxysmal-developmental model, whereas midfold mass and pseudocyst recurrences follow a force-multiplication, damage-accumulation process.

CONCLUSIONS

Vocal fold polyps are acute lesions evenly distributed by age and gender that recur uniformly over time, suggesting they arise from sudden tissue reactions to phonotraumatic stress. Pseudocysts and midfold fibrous masses are chronic lesions predominantly found in young women that recur with log-normal distribution over time, suggesting gradual damage accumulation in larynges predisposed to enhanced phonotrauma.

LEVEL OF EVIDENCE

4 Laryngoscope, 2021.

Prospective Evaluation of Safety of Singing on Steroids: Testing the Truth of Received Wisdom

OBJECTIVES/HYPOTHESIS

Performing while on steroids is widely considered to increase risk of vocal injury. This study aims to determine incidence and type of injury, and changes in performers' voices after treatment of vocal fold edema (VFE) with glucocorticoids.

STUDY DESIGN

Prospective Cohort.

METHODS

Fifty-five performers (34 female; 21 male) treated for acute VFE with short-course oral glucocorticoids were prospectively evaluated pre- and post-treatment. Subjects underwent videostroboscopy, acoustic/aerodynamic assessment, and functional assessment with the Singing Voice Handicap Index-10 (SVHI-10) and Evaluation of the Ability to Sing Easily (EASE). Blinded reviewers rated videostroboscopic examinations and performed audio-perceptual assessment. Chi-square tests and Wilcoxon signed rank tests were applied for analyses of treatment changes.

RESULTS

Following glucocorticoid treatment, two instances of vocal fold hemorrhage (3.6%) and three instances of glottic thrush (5.5%) were observed. These resolved without consequence. Mucosal wave dynamics and edema improved. Nearly all subjects completed scheduled performances, and significant improvement was noted on the EASE, reflecting improved function after treatment. These were further supported by statistically significant improvements in CAPE-V and some acoustic and aerodynamic outcomes (semitone pitch range for females, airflow measures for males).

CONCLUSIONS

Oral glucocorticoids appear to be generally safe for performers presenting with acute VFE. The incidence of adverse effects, specifically hemorrhage and thrush, was low and the effects transient. Vocal fold examination should be considered obligatory before prescribing glucorticoids to working performers. A treatment strategy for acute VF edema incorporating glucocorticoids when appropriate appears to result in significant improvements in measures of glottal function including videostroboscopic appearance, subject perception, and auditory perception.

LEVEL OF EVIDENCE

4 Laryngoscope, 2021.

Office-Based Procedure Training in Laryngology Fellowship Programs

OBJECTIVE

To assess the current practices and challenges of training office-based procedures to laryngology fellows in the United States.

METHODS

An anonymous web-based survey study was distributed to laryngology fellowship program directors, as listed by the American Laryngological Association. The survey was a 19-item questionnaire with free-text, Likert scale, and multiple-choice answers.

RESULTS

Twenty-two of 27 program directors (81.4%) replied to the survey. Many programs (8/16) have three or more laryngologists and do more than 10 procedures each week (10/16). Sixty-nine percent (11/16) of directors had not been trained for office procedures in their fellowship. The fellows are allowed to be primary surgeon on 68.75% and 75% of vocal fold augmentation and laser procedures, respectively. The expected competencies for these procedures on graduation are average-moderate and moderate. When program directors asked about the methods used for training, a minority of them use simulators (2/16), procedural checklists (2/16), or structured debriefing (2/16). The most commonly used methods were case-based troubleshooting (13/16) and unstructured debriefing (13/16). Patients being awake and patients' expectations are seen as the most important obstacles. Most of the directors thought office-based procedure training could be improved (14/16). The most common suggestions were using step-wise checklists, simulator-labs, and formal debriefings.

CONCLUSION

This is the first study evaluating the training of office-based laryngeal procedures during laryngology fellowship. Given the increasing importance of these procedures in practice and the herein identified barriers and need for improvement, fellowships should investigate the use of systematic training tools to improve fellow competency with office-based procedures. Laryngoscope, 131:2054-2058, 2021.

Establishing an Office-Based Framework for Resuming Otolaryngology Care in Academic Practice During the COVID-19 Pandemic

OBJECTIVE

The COVID-19 health crisis abruptly disrupted the practice of otolaryngology. This article aims to define the changes needed to operate an academic otolaryngology practice safely and efficiently from within the epicenter of the pandemic. We define the areas of normal patient workflow that have been affected by COVID-19, and we offer mitigation strategies with attention paid to the specific needs of subspecialties.

DATA SOURCES

The article includes data specific to the office practice metrics of the Weill Cornell Medicine Department of Otolaryngology-Head and Neck Surgery, as well as publically available data from New York Presbyterian Hospital system and the New York Times.

REVIEW METHODS

Expert opinion.

CONCLUSIONS

Through careful planning and execution, it is possible to reestablish safe otolaryngologic patient care during the COVID-19 pandemic. It will require a significant change from prior practice models for successful implementation. Additionally, telemedicine can be positively integrated into the treatment of otolaryngology diseases for new and established patients.

IMPLICATIONS FOR PRACTICE

The information conveyed in this review can be used as a guide by large and small otolaryngology groups to identify aspects of the patient visit that are "at risk" due to COVID-19, and it suggests sensible responses that can be made without a significant disruption to normal practice. The methods used to identify vulnerabilities with the patient visit process can be applied to future unforeseen crises, such as a resurgence of COVID-19 or a novel pandemic.

Is Office Laryngoscopy an Aerosol-Generating Procedure?

Objectives/Hypothesis

The aims of this work were 1) to investigate whether office laryngoscopy is an aerosol‐generating procedure with an optical particle sizer (OPS) during clinical simulation on healthy volunteers, and 2) to critically discuss methods for assessment of aerosolizing potentials in invasive interventions.

Study Design

Prospective quantification of aerosol and droplet generation during clinical simulation of rigid and flexible laryngoscopy.

Methods

Two healthy volunteers were recruited to undergo both flexible and rigid laryngoscopy. An OPS was used to quantify aerosols and droplets generated for four positive controls relative to ambient particles (speech, breathing, /e/ phonation, and /æ/ phonation) and for five test interventions relative to breathing and phonation (flexible laryngoscopy, flexible laryngoscopy with humming, flexible laryngoscopy with /e/ phonation, rigid laryngoscopy, and rigid laryngoscopy with /æ/ phonation). Particle counts in mean diameter size range from 0.3 to >10 μm were measured with OPS placed at 12 cm from the subject's nose/mouth.

Results

None of the laryngoscopy interventions (n = 10 each) generated aerosols above that produced by breathing or phonation. Breathing (n = 40, 1–3 μm, P = .016) and /æ/ phonation (n = 10, 1–3 μm, P = .022; 3–5 μm. P = .083; >5 μm, P = .012) were statistically significant producers of aerosols and droplets. Neither speech nor /e/ phonation (n = 10 each) were associated with statistically significant aerosols and droplet generation.

Conclusions

Using OPS to detect droplets and aerosols, we found that office laryngoscopy is likely not an aerosol‐generating procedure. Despite its prior use in otolaryngological literature, an OPS has intrinsic limitations. Our study should be complemented with more sophisticated methods of droplet distribution measurement.

Level of Evidence

3 Laryngoscope, 130:2637–2642, 2020

Flexible Laryngoscopy and COVID-19

Flexible laryngoscopy, the gold-standard evaluation of the larynx and the pharynx, is one of the most commonly performed procedures in otolaryngology. During the coronavirus disease 2019 (COVID-19) pandemic, flexible laryngoscopy represents a risk for patients and an occupational hazard for otolaryngologists and any clinic staff involved with the procedure or endoscope reprocessing. Here we present a set of recommendations on flexible laryngoscopy performance during the pandemic, including patient selection, personal protective equipment, and endoscope disinfection, based on a consensus reached during a virtual webinar on March 24, 2020, attended by approximately 300 participants from the American laryngology community.

Granulomas of the membranous vocal fold after intubation and other airway instrumentation

OBJECTIVES/HYPOTHESIS

We describe the clinical features of granulomas of the membranous vocal fold secondary to endotracheal intubation, bronchoscopy or esophagogastroduodenoscopy.

STUDY DESIGN

Retrospective case series.

METHODS

Review of cases at a single tertiary institution with evaluation of patient demographic characteristics, time to presentation, time to treatment, and clinical outcomes.

RESULTS

Thirteen adult patients were identified with postintervention granuloma of the membranous vocal fold. All patients were female, with a mean age of 60 years (range, 28-81 years). None noted hoarseness prior to the intervention, and all noted significant hoarseness postoperatively. Conservative treatment with proton pump inhibitors and vocal rest was initially implemented in all patients. Four cases resolved without further intervention. Nine underwent surgical management because of airway symptoms, failure to improve, or patient request. One patient had injury to the contralateral vocal fold upon intubation. None experienced recurrence. Five had complete recovery of voice postoperatively, four did not.

CONCLUSION

Iatrogenic granulomas of the membranous vocal fold after intubation or other upper airway instrumentation are rare complications presenting in the early postprocedure period with worsening hoarseness. Initial conservative treatment may be sufficient to yield resolution, and surgical treatment is effective for those failing medical management. Permanent voice damage may result from the original injury.

LEVEL OF EVIDENCE

4 Laryngoscope, 129:441-447, 2019.

Time course of recovery of idiopathic vocal fold paralysis

OBJECTIVES/HYPOTHESIS

To clarify the time course of recovery in patients with idiopathic vocal fold paralysis.

STUDY DESIGN

Retrospective chart review.

METHODS

Medical records for all patients with idiopathic vocal fold paralysis over a 10-year period were reviewed to obtain demographic and clinical information, including onset of disease and recovery of vocal function. Stroboscopic exams of patients who recovered voice were reviewed blindly to assess return of vocal fold motion.

RESULTS

Thirty-eight of 55 patients (69%) recovered vocal function. Time course of recovery could be assessed in 34 patients who did not undergo injection augmentation. The mean time to recovery was 152.8 ± 109.3 days (left, 179.8 ± 111.3 days; right, 105.3 ± 93.7 days; P = .088). Two-thirds of patients recovered within 6 months. Probability of recovery declined over time. Five of 22 patients who recovered voice had return of vocal fold motion; 17 did not. The mean time to recovery did not differ between these groups (return of motion, 127.4 ± 132.3 days; no return of motion, 160.1 ± 105.1 days; P = .290).

CONCLUSIONS

Sixty-nine percent of patients with idiopathic vocal fold paralysis recovered vocal function, two-thirds doing so within 6 months of onset. Age, gender, laterality, use of injection augmentation did not influence recovery rate. Declining probability of recovery over time leads us to consider framework surgery after 6 months in patients with idiopathic paralysis.

LEVEL OF EVIDENCE

4. Laryngoscope, 128:148-152, 2018.

Velopharyngeal Dystonia: An Unusual Focal Task-specific Dystonia?

BACKGROUND

Velopharyngeal dysfunction produces a nasal speech pattern because of the inability to close the nasal airway during speech, most often associated with anatomical abnormalities of the palate.

CASE REPORT

We describe two cases of possible velopharyngeal dystonia, a task-specific movement disorder causing a speech pattern similar to velopharyngeal dysfunction. Both patients experienced treatment response with anticholinergic medication.

DISCUSSION

Dystonia affecting speech via involvement of the pharyngeal musculature may be an unrecognized etiology of voice disorders.

Medialization Laryngoplasty After Injection Augmentation

OBJECTIVES

This study aims to assess the effect of vocal fold injection augmentation (IA) on subsequent medialization laryngoplasty (ML).

STUDY DESIGN

A retrospective cohort study with follow-up telephone survey was carried out.

METHODS

Clinical records of patients with unilateral vocal fold paralysis or paresis (VFP) who underwent ML between April 2006 and March 2015 were reviewed. Patients who underwent IA before ML were compared with patients who did not, with respect to demographic information, symptoms, Voice Handicap Index-10 (VHI-10), etiology of VFP, and revision rate. Among patients undergoing IA, the effects of injection material and of interval from IA to ML on revision rate were assessed. Follow-up telephone surveys were conducted to evaluate long-term outcomes using VHI-10 and a condition-specific questionnaire.

RESULTS

One hundred thirty-five patients (70 male:65 female) with vocal fold paralysis (125) or paresis (10) underwent ML (96 left:39 right). Sixty-six (48.9%) patients underwent concurrent arytenoid adduction. Fourteen (10.4%) patients required revision. Fifty-six (41.5%) patients had prior IA; five (8.9%) patients underwent revision. Seventy-nine (58.5%) patients did not have IA; nine (11.4%) patients required revision (P = 0.78). Neither augmentation material nor length of interval between last IA and ML affected the revision rate (P = 1.00; P ≥ 0.11 for all tested intervals, respectively). No difference in follow-up VHI-10 score was found between patients who had IA before ML and patients who had not (P = 0.73).

CONCLUSIONS

IA does not appear to affect the revision rate or long-term outcome of subsequent ML.

Reliability of the Perceptual Evaluation of Adductor Spasmodic Dysphonia

Objectives: Although perceptual assessment by experienced voice clinicians remains the gold standard for the diagnosis and assessment of severity of adductor spasmodic dysphonia (ADSD), the interrater reliability of voice experts for this task has not been assessed. In addition, it is unknown whether telephone-recorded or -transmitted voice samples could be used for this task. The aims of this study were 1) to assess the reliability of perceptual analysis of ADSD severity by voice experts and 2) to compare the results between digitally recorded voice samples and those recorded over the telephone.

Methods: Five laryngologists randomly selected voice samples from 46 ADSD patients and rated the severity of ADSD on a 5-point rating scale. A set of digital voice recordings and a set of telephone voice recordings made from filtering the digital set via the telephone were rated, and each voice set was rated twice. Measures of intrarater and interrater reliability, as well as a measure of the probability of agreement among the raters, were calculated.

Results: There was a high level of agreement on ADSD severity, with excellent interrater and intrarater reliability (Cronbach's alpha, .93 to .96). The probabilities of rater agreement on the digitally recorded and telephone-filtered voice samples were similar (χ2, p = .07). The ratings of digital versus telephone voice samples were highly correlated (Pearson r, 0.99; p<.001).

Conclusions: These results demonstrate that voice experts are reliably able to judge and agree on the severity of ADSD. Telephone-filtered voices appear to convey adequate ADSD perceptual cues for expert listeners to judge the severity of spasmodic dysphonia.

Tongue Paresthesia and Dysgeusia following Operative Microlaryngoscopy

Objectives:

This study was performed to assess the overall incidence and duration of alterations in tongue sensation and taste after operative microlaryngoscopy, and the relation of these symptoms to operative time.

Methods:

We performed a retrospective review of information regarding tongue symptoms in patients who completed standard post-microlaryngoscopy follow-up at 1 week, 1 month, and 3 months.

Results:

One hundred patients (54 male and 46 female; mean age, 46 years; age range, 14 to 83 years) met the inclusion criteria. Eighteen patients had positive findings at 1 week: 15 complained of paresthesia and 3 of dysgeusia. The symptoms decreased over time without treatment (4% of patients at 1 month and 1% of patients at 3 months). Only 1 case of dysgeusia persisted past 3 months. Gender was found to be a significant independent risk factor for the development of symptoms (odds ratio, 5.63; 95% confidence interval, 1.36 to 31.29; p = .013). Patients whose operations lasted longer than 1 hour were almost 4 times more likely to develop tongue-related symptoms than those with an operative time less than 30 minutes, although these findings did not achieve statistical significance (odds ratio, 3.91; 95% confidence interval, 0.62 to 30.95; p = .182).

Conclusions:

Alterations in tongue sensation and taste, most likely due to lingual nerve injury, are common after microlaryngoscopy, especially in female patients. They also tend to be associated with longer operative times. Although transient in nearly every case, lingual paresthesia and dysgeusia should form part of the preoperative discussion with the patient.

Management of Benign Vocal Fold Lesions: A Survey of Current Opinion and Practice

Empirical data are often not available to guide clinical practices in the treatment of benign mucosal lesions of the vocal folds. The purpose of this report is to describe opinions and practices in order to identify areas of consensus and discrepancy and thus guide future inquiry. A 16-item survey mailed to all active US members of the American Academy of Otolaryngology—Head and Neck Surgery (n = 7,321) included questions on the use of voice therapy; diagnostic testing; perioperative use of steroids, antibiotics, and antireflux medications; and use of lasers. Responses used a Likert 5-point scale with end anchors of 1 equaling “never” and 5 equaling “always” and were stratified according to lesion (nodules, polyps, cysts). A 16.5% response rate (n = 1,208) was obtained. A lack of consensus was most evident in the use of voice therapy for lesions other than nodules; antireflux medication; and intravenous steroids. Disagreement was also noted regarding the use of lasers, oral steroids, and antibiotics. Other than voice therapy as initial intervention for nodules, no statistically significant differences by lesion type exist regarding use of voice therapy, laser, or any medication. Prospective clinical trials addressing voice therapy, antireflux medications, steroids, and antibiotics are needed to inform clinical practice. Furthermore, treatment practices appear to be largely independent of lesion type. Therefore, traditional diagnostic categories do not seem to be useful guides to treatment, and may need to be reevaluated in light of improvements in diagnostic technology and surgical technique.

Laryngeal Thrush

Superficial fungal infection of the mucous membranes (thrush) isolated to the larynx is neither widely reported nor well recognized clinically. Therefore, it is often associated with ineffective treatment and delay in diagnosis, and sometimes associated with unneeded surgical intervention. Eight cases of thrush isolated to the larynx, with no oral or oropharyngeal manifestations, are presented. Four of these were isolated to the vocal folds alone. All patients were adults, and 4 were smokers. Hoarseness was always present. Pain was present inconsistently, and there was no dysphagia or odynophagia, in contrast to other forms of upper aerodigestive tract candidiasis. On average, diagnosis was not made until 6 months after the onset of symptoms. Possible causative factors included use of systemic steroids (3 cases), broad-spectrum antibiotics (1 case), or inhaled steroids (5 cases); diabetes (2 cases); and neutropenia (1 case). In 3 cases, all with thrush isolated to the vocal folds, inhaled steroids were the only causative factor identifiable — a feature reported only twice previously. Three patients underwent surgical procedures that might have been avoided had an accurate diagnosis been made. All patients responded readily to oral fluconazole and removal of predisposing factors where possible. The signs, symptoms, predisposing factors, and treatment are compared to those of 14 cases reported in the literature over 35 years.

Granuloma of the Membranous Vocal Fold: An Unusual Complication of Microlaryngoscopic Surgery

Objectives:

We describe the clinical features of granuloma of the membranous vocal fold (as opposed to granuloma of the vocal process, or “contact granuloma”), a poorly recognized sequela of microlaryngoscopic surgery. Membranous vocal fold granuloma may mimic the initial lesion in appearance, and thus be mistaken for recurrence.

Methods:

We performed a retrospective review of cases from 2 institutions.

Results:

Fifteen cases of membranous vocal fold granuloma from 2 institutions were identified. In all but 1 case, granuloma developed in the early postoperative period, within 8 weeks. Of the 15 cases, 10 followed laser resection of carcinoma. Five were noted following cold steel resection of benign lesions (2 papillomas, 2 cysts, 1 Reinke's edema). Technical aspects of these cases suggest that membranous vocal fold granulomas result from surgical violation of deep tissue planes and/or epithelial defects. All patients were treated with proton pump inhibitors. In 12 cases, the granulomas proved self-limited, resolving over weeks to months following surgery. Three patients underwent surgical removal of the lesion, which confirmed the diagnosis. One of these cases recurred and was treated nonsurgically.

Conclusions:

Granuloma should be suspected when a mass lesion appears at the surgical site early in the postoperative course. Surgical excision is generally not necessary and may provoke further growth of granulation tissue.

Predictors for Permanent Medialization Laryngoplasty in Unilateral Vocal Fold Paralysis

OBJECTIVE

Early differentiation of patients with unilateral vocal fold paralysis (VFP) who recover from those who do not and consequently require permanent medialization laryngoplasty (ML) remains a challenge. The goal of this study is to identify factors that predict the need for ML.

STUDY DESIGN

Case series with chart review.

SETTING

Academic center.

SUBJECTS AND METHODS

A total of 507 records of patients with VFP were analyzed, of which 252 met criteria and were stratified according to whether or not they obtained ML. Demographic information and clinical features were analyzed to determine predictors of ML. A nomogram was generated according to the significance and utility of these parameters.

RESULTS

Of 252 patients, 86 underwent ML, and 166 did not. No differences in age or sex were observed between the ML and non-ML patients (P = .27 and P = .35, respectively). The most common cause of VFP was iatrogenic injury (62.79%, ML; 49.40%, non-ML). ML correlated with VFP secondary to neoplastic disease (odds ratio [OR], 2.14; 95% confidence interval [95% CI], 1.01-4.53) and iatrogenic injury (OR 1.73; 95% CI 1.01-2.94). ML had an inverse correlation with idiopathic VFP (OR, 0.40; 95% CI, 0.20-0.79). Patients in the ML group were more likely to have left-sided VFP, to have a history of aspiration, and to present ≥90 days from onset and less likely to have had temporary injection augmentation.

CONCLUSION

Clinical features may be used to predict the likelihood of a patient obtaining ML. Nomograms may be useful to counsel patients who would benefit from early definitive surgery.

Consensus statement: Using laryngeal electromyography for the diagnosis and treatment of vocal cord paralysis

INTRODUCTION

The purpose of this study was to develop an evidence-based consensus statement regarding use of laryngeal electromyography (LEMG) for diagnosis and treatment of vocal fold paralysis after recurrent laryngeal neuropathy (RLN).

METHODS

Two questions regarding LEMG were analyzed: (1) Does LEMG predict recovery in patients with acute unilateral or bilateral vocal fold paralysis? (2) Do LEMG findings change clinical management in these individuals? A systematic review was performed using American Academy of Neurology criteria for rating of diagnostic accuracy.

RESULTS

Active voluntary motor unit potential recruitment and presence of polyphasic motor unit potentials within the first 6 months after lesion onset predicted recovery. Positive sharp waves and/or fibrillation potentials did not predict outcome. The presence of electrical synkinesis may decrease the likelihood of recovery, based on 1 published study. LEMG altered clinical management by changing the initial diagnosis from RLN in 48% of cases. Cricoarytenoid fixation and superior laryngeal neuropathy were the most common other diagnoses observed.

CONCLUSIONS

If prognostic information is required in a patient with vocal fold paralysis that is more than 4 weeks and less than 6 months in duration, then LEMG should be performed. LEMG may be performed to clarify treatment decisions for vocal fold immobility that is presumed to be caused by RLN. Muscle Nerve 53: 850-855, 2016.

Vocal Fold Paralysis as a Delayed Consequence of Neck and Chest Radiotherapy

Objective

To describe a series of cases of vocal fold paralysis years after radiation therapy, including presentation, clinical course, and treatment.

Study Design

Case series with chart review.

Setting

Tertiary care center.

Subjects and Methods

A review of 8 years of patient records yielded 10 patients (8 male and 2 female; average age 57 years [range, 29-76 years]) with vocal fold paralysis and a history of radiation therapy to the head, neck, or mediastinum. These patients did not have other possible etiologies of vocal fold paralysis. Demographic, diagnostic, clinical course, and treatment data were collected.

Results

On average, 21 years (range, 1-27 years) elapsed between completion of radiation and presentation with vocal fold paralysis. Original pathologies included Hodgkin lymphoma (5), squamous cell carcinoma of the head and neck (4), and peripheral T-cell lymphoma (1). Eight patients had unilateral left vocal fold paralysis, and 2 had bilateral neuropathy; none recovered spontaneously. All patients had dysphonia, and nearly all patients also complained of dysphagia. Six elected not to be treated. Four underwent injection augmentation with resolution of voice complaints.

Conclusions

Radiation therapy has the potential to cause laryngeal neuropathy years to decades after treatment. The potential for recovery is low, but injection augmentation can relieve symptoms. Development of contralateral neuropathy and altered tissue response are considerations in treatment.