Noninvasive, tube-based, continuous vagal nerve monitoring using the laryngeal adductor reflex: Feasibility study of 134 nerves at risk

BACKGROUND

Continuous vagal intraoperative neuromonitoring (IONM) currently requires placement of a vagal nerve electrode. Herein, we present data from 100 patients (134 nerves-at-risk) monitored continuously during neck endocrine surgeries using a noninvasive, new methodology that solely utilizes endotracheal tube electrodes to simultaneously stimulate laryngeal mucosa and record a laryngeal adductor reflex continuous IONM (LAR-C-IONM) response.

METHODS

The laryngeal adductor reflex (LAR) was elicited by electrical laryngeal mucosal stimulation on the side contralateral to the operative field using endotracheal tube electrodes. All patients completed preoperative and postoperative laryngeal and voice examinations.

RESULTS

One hundred patients (134 nerves-at-risk) were included. Significantly more nerves-at-risk with an LAR opening to closing amplitude decrement >60% or with absolute closing amplitude <100 μV had postoperative vocal fold paralysis (P < .001). The LAR-C-IONM was highly sensitive to recurrent laryngeal nerve (RLN) stretch or compression.

CONCLUSION

The LAR-C-IONM is a promising new way to perform continuous vagal monitoring that requires no equipment other than an electromyography (EMG) endotracheal tube and is undergoing further, large-scale evaluation.

Surgical management of the recurrent laryngeal nerve in thyroidectomy: American Head and Neck Society Consensus Statement

"I have noticed in operations of this kind, which I have seen performed by others upon the living, and in a number of excisions, which I have myself performed on the dead body, that most of the difficulty in the separation of the tumor has occurred in the region of these ligaments…. This difficulty, I believe, to be a very frequent source of that accident, which so commonly occurs in removal of goiter, I mean division of the recurrent laryngeal nerve." Sir James Berry (1887).

Adductor focal laryngeal Dystonia: correlation between clinicians' ratings and subjects' perception of Dysphonia

Background

Although considerable research has focused on the etiology and symptomology of adductor focal laryngeal dystonia (AD-FLD), little is known about the correlation between clinicians’ ratings and patients’ perception of this voice disturbance. This study has five objectives: first, to determine if there is a relationship between subjects’ symptom-severity and its impact on their quality of life; to compare clinicians’ ratings with subjects’ perception of the individual characteristics and severity of AD-FLD; to document the subjects’ perception of changes in dysphonia since diagnosis; to record the frequency of voice arrest during connected speech; and, finally, to calculate inter-clinician reliability based on results from the Unified Spasmodic Dysphonia Rating Scale (USDRS) (Stewart et al, J Voice 1195-10, 1997).

Methods

Sixty subjects with AD-FLD who were receiving ongoing injections of BoNT participated in this study. Subjects’ mean age was 60.78 years and their mean duration of symptoms was 16.1 years. Subjects completed the Disease Symptom Questionnaire (DSQ) (specifically designed for this study) and the Voice Handicap Index-10 (VHI-10) (Jacobson et al, Am J Speech Lang Pathol 6:66–70, 1997) to measure the symptoms of their dysphonia and the impact of the disease on their quality of life.

Two speech-language pathologists and two laryngologists used the Voice Arrest Measure (VAM) (specifically designed for this study) and the USDRS to independently rate voice recordings of 56/60 subjects.

Results

The mean VHI-10 score was 21.3 which is clinically significant. The results of the DSQ and the USDRS were highly correlated. The most severe symptoms identified by both subjects and clinicians were roughness, strain-strangled voice quality, and increased expiratory effort. Voice arrest, aphonia, and tremor were uncommon. Subjects rated their current voice quality at the time of reinjection (i.e., at the time of the study) as significantly better than at the time of their initial AD-FLD diagnosis (p < 0.0001). Inter-clinician reliability on the USDRS was significant at the 0.001 level.

Conclusions

The findings from the VHI-10 suggest that AD-FLD has a profound impact on quality of life. The results of the DSQ and the USDRS suggest that there is a strong correlation between subjects’ perception and clinicians’ assessment of the individual symptoms and the severity of the dysphonia. The findings from the VAM suggest that voice arrests are infrequent in subjects with AD-FLD who are receiving ongoing BoNT injections. The strong inter-clinician reliability on the USDRS suggests that it is an appropriate measure for identifying symptoms and severity of AD-FLD.

Electronic supplementary material

The online version of this article (10.1186/s40734-017-0066-y) contains supplementary material, which is available to authorized users.

The electrolarynx: voice restoration after total laryngectomy

The ability to speak and communicate with one’s voice is a unique human characteristic and is fundamental to many activities of daily living, such as talking on the phone and speaking to loved ones. When the larynx is removed during a total laryngectomy (TL), loss of voice can lead to a devastating decrease in a patient’s quality of life, and precipitate significant frustration over their inability to communicate with others effectively. Over the past 50 years there have been many advances in techniques of voice restoration after TL. Currently, there are three main methods of voice restoration: the electrolarynx, esophageal speech, and tracheoesophageal speech through a tracheoesophageal puncture (TEP) with voice prosthesis. Although TEP voice is the current gold standard for vocal rehabilitation, a significant minority of patients cannot use or obtain TEP speech for various reasons. As such, the electrolarynx is a viable and useful alternative for these patients. This article will focus on voice restoration using an electrolarynx with the following objectives: 1) To provide an understanding of the importance of voice restoration after total laryngectomy. 2) To discuss how the electrolarynx may be used to restore voice following total laryngectomy. 3) To outline some of the current electrolarynx devices available, including their mechanism of action and limitations. 4) To compare pros and cons of electrolaryngeal speech to TEP and esophageal speech.

Reconstruction of Anterior Tracheal Defects Using a Bioengineered Graft in a Porcine Model

BACKGROUND

Reconstruction of long-segment tracheal defects can be challenging and a suitable tracheal substitute remains lacking. We sought to create a bioengineered tracheal graft to repair such lesions using acellullar bovine dermis extracellular matrix (ECM) and male human mesenchymal stem cells (hMSCs) and implant it in a porcine model.

METHODS

hMSCs were seeded on the ECM and incubated for 1 week with chondrogenic factors. An anterior 4 cm × 3 cm defect was surgically created in the trachea of 4-week-old female Yorkshire pigs. The defect was reconstructed using the bioengineered graft (n = 7) or control (n = 3, ECM only). The study duration was 3 months.

RESULTS

Survival ranged from 7 days (n = 3) to 3 months (n = 7). Early death was due to graft malacia (n = 1, control), graft infection (n = 1, bioengineered), and pneumonia (n = 1, bioengineered). There was substantial animal growth at 3 months (>200% weight). Surveillance bronchoscopy showed patent airway, mild stenosis, and integration of the graft with the native trachea. On histology, luminal epithelialization and neovascularization with scant submucosa were observed in both the bioengineered graft and control groups. Chondrogenesis was seen only in the bioengineered graft. The neocartilage was less mature and organized compared to native cartilage. SRY immunostain was positive in the neocartilage but not control or native trachea.

CONCLUSIONS

We demonstrate the feasibility of the bioengineered graft for reconstruction of long anterior tracheal defects with favorable short-term outcomes. Furthermore, we show its ability to facilitate chondrogenesis, neovascularization, and epithelialization. Importantly, it supported rapid animal growth offering potential solutions for both pediatric and adult applications.

An extended toboggan technique for resection of substernal thyroid goiters

We describe our technique for the safe resection of substernal thyroid goiters. Early mobilization of the thyroid gland from tracheal attachments anteriorly and laterally facilitates extraction of the goiter from the mediastinum. Retrograde dissection through the ligament of Berry on the ipsilateral side can also facilitate identification of the recurrent laryngeal nerve and delivery of the substernal portion of the gland. We describe 2 representative cases in which we successfully used this technique.

Laryngeal examination in thyroid and parathyroid surgery: An American Head and Neck Society consensus statement: AHNS Consensus Statement

This American Head and Neck Society (AHNS) consensus statement discusses the techniques of laryngeal examination for patients undergoing thyroidectomy and parathyroidectomy. It is intended to help guide all clinicians who diagnose or manage adult patients with thyroid disease for whom surgery is indicated, contemplated, or has been performed. This consensus statement concludes that flexible transnasal laryngoscopy is the optimal laryngeal examination technique, with other techniques including laryngeal ultrasound and stroboscopy being useful in selected scenarios. © 2016 Wiley Periodicals, Inc. Head Neck 38: 811-819, 2016.

Negative dystonia of the palate: a novel entity and diagnostic consideration in hypernasal speech

OBJECTIVE

To present the first documented series of patients with negative dystonia (ND) of the palate, including clinical symptoms, functional MRI findings, and management options.

STUDY DESIGN

Case series ascertained from clinical research centers that evaluated patients with both hyperkinetic and hypokinetic movement disorders.

METHODS

Between July 1983 and March 2013, data was collected on patient demographics, disease characteristics, functional MRI findings, long-term management options, and outcomes. We sought patients whose clinical examination demonstrated absent palatal movement on speaking, despite normal palatal activity on other activities.

RESULTS

Five patients (2 males, 3 females) met clinical criteria. All patients presented with hypernasal speech without associated dysphagia. Clinical examination revealed absent palatal movement on speaking despite intact gag reflexes, normal palate elevation on swallowing, and normal cranial nerve examinations. Other cranial and/or limb dystonias were present in four patients (80.0%). Three patients (60.0%) had previously failed oral pharmacologic therapy. Two patients underwent functional magnetic resonance imaging (fMRI) studies, which demonstrated an overall decrease of cortical and subcortical activation during production of symptomatic syllables and asymptomatic coughing. Management included speech therapy (all patients) and palatal lift (2 patients) with limited improvement. Calcium hydroxyapatite injection (1 patient) into the soft palate and Passavants' ridge was beneficial.

CONCLUSIONS

This is the first report of ND of the palate. Characteristic findings were task-specific absent palatal movement with speech, despite normal movement on swallowing, coughing, and an intact gag reflex, as well as disorder-specific decreased brain activation on functional MRI. A diagnosis of ND of the palate should be considered for patients who present with hypernasal speech.

LEVEL OF EVIDENCE

4.

Perceptions of harm to health from cigarettes, blunts, and marijuana among young adult African American men

OBJECTIVES

To assess perceptions and knowledge of health effects of smoking tobacco, blunts, and marijuana among adult African American (AA) men aged 19-30 in five Black Belt counties of rural Alabama.

METHODS

Cross-sectional study using interviewer-administered oral surveys.

RESULTS

Four hundred and fifteen participants completed surveys. Cigarettes were the most common initial and current product used (40%) and there were more current than initial users of marijuana and blunts. Significantly more cigarette users (80%) felt that smoking cigarettes was harmful to health compared with marijuana (33%) and blunt (53%) users (p < .001). Many marijuana smokers (71%) and blunt smokers (48%) believed smoking their product was safer than cigarettes for reasons including more natural and less addictive.

CONCLUSIONS

When compared with cigarettes, knowledge of the health-related effects of smoking marijuana-containing products among young African American men is poor. Intervention strategies focusing on the adverse health effects of smoking marijuana are needed.

Palatal myoclonus: algorithm for management with botulinum toxin based on clinical disease characteristics

OBJECTIVES/HYPOTHESIS

To review the clinical characteristics and management of patients with palatal myoclonus and devise an algorithm for treatment with botulinum toxin based on presenting symptoms, clinical examination findings, and involved muscle groups.

STUDY DESIGN

Retrospective chart review at two clinical research centers.

METHODS

Between 1985 and 2011, 15 patients with a diagnosis of essential palatal myoclonus were assessed. Data were collected on patient demographics, disease characteristics, and treatment outcomes.

RESULTS

Patients were more commonly female (60.0% vs. 40.0%) with average age at onset of 35.6 years. In 40.0% of patients, the myoclonus began after a viral upper respiratory tract infection. Two-thirds of patients had been previously treated unsuccessfully with oral medications. Predominant presenting symptoms included clicking tinnitus (46.7%), nonaudible awareness of palatal movements ± rhinolalia (20.0%), or both (33.3%). Clinical examination revealed co-incident involvement of pharyngeal musculature in 53.3%. Palatal site for initial botulinum toxin injection depended on the predominant presenting symptom: for tinnitus, 2.5 U were injected transorally into the tensor veli palatini muscle at the level of the pterygoid hamulus/lateral soft palate; for palatal movements, the injection was placed medially on either side of the uvula. Dose and location of subsequent injections were tailored depending on response to the toxin and location of subsequent observed maximal muscular contractions.

CONCLUSIONS

Palatal myoclonus can present with tinnitus or patient-perceived palatal movements. Management with botulinum toxin can be tailored to address the muscles contributing to the predominant presenting symptoms.

Surgical management of airway dysfunction in Parkinson's disease compared with Parkinson-plus syndromes

OBJECTIVES

We sought to compare the laryngeal symptoms of Parkinson's disease (PD) with those of multiple system atrophy (MSA), a Parkinson-plus syndrome; to review the differences in surgical management of upper airway dysfunction between patients with PD and those with MSA; and to present a treatment algorithm for management of upper airway disorders in patients with PD and MSA.

METHODS

We analyzed the airway manifestations of each disease, including clinical and physiological test results and management outcomes, in a case series of 30 patients (24 with PD and 6 with MSA).

RESULTS

Vocal fold atrophy causing bowing with a midfold glottic gap was common in patients with PD. One third of patients with PD underwent vocal fold augmentation with noticeable improvement in vocal volume and phonation time. Tracheostomy was required for life-threatening sleep apnea in 50% of the patients with MSA. Systemic medications and speech therapy were integral components of the management regimen.

CONCLUSIONS

Surgical management of laryngeal disorders in patients with PD should focus on restoring bulk to atrophic vocal folds to minimize glottic gaps, thus improving vocalization efficiency even in the presence of impaired respiratory effort. Conversely, the autonomic dysfunction that characterizes MSA results in upper airway obstruction, and thus surgical management focuses primarily on maintaining an adequate airway, which frequently necessitates tracheostomy.

Assessment of donor site morbidity for free radial forearm osteocutaneous flaps

PURPOSE

Assessment of donor site morbidity and recipient site complications following free radial forearm osteocutaneous flap (FRFOCF) harvest and evaluation of patient perceived upper limb disability for free radial forearm osteocutaneous versus fasciocutaneous flaps (FRFF).

METHODS

First a case series was undertaken of 218 patients who underwent an FRFOCF at two tertiary referral centers between February 1998 and November 2010. Outcomes included forearm donor site morbidity and recipient site complications. Second, the disability of the arm, shoulder, and hand (DASH) questionnaire assessing patient perceived arm disability was administered by phone to 60 consecutive patients who underwent an FRFOCF or FRFF.

RESULTS

Mean patient age was 63 years with male predominance (62.8%). Median bone length harvested was 8 cm (range, 3-12 cm) with prophylactic plating of the radius following harvest. Donor site morbidity included fracture (1 patient, 0.5%) and sensory neuropathy (5 patients, 2.3%). Mean DASH scores were comparative between groups and to established normative values. Mandibular malunion rate was 3.2% and hardware extrusion at the recipient site occurred in 15.6%.

CONCLUSION

Reluctance to perform FRFOCF by surgeons usually centers on concerns regarding potential donor site morbidity and adequacy of available bone stock; however, we identified minimal objective or patient perceived donor site morbidity or recipient site complications following harvest of FRFOCFs. Mild wrist weakness and stiffness are common but do not impede ability to perform activities of daily living. Data from this and other reports suggest this flap is particularly useful for midfacial and short segment mandibular reconstruction.

Patterns of blunt use among rural young adult African-American men

BACKGROUND

Blunts are hollowed-out cigars or leaf tobacco filled with marijuana. Use of blunts has increased since the 1990s and, in 2005, 3.5% of all American youth were estimated to have used blunts in the past month. Blunt smokers may have greater odds of cannabis and tobacco dependency and are at risk of smoking-related diseases. Previous studies have suggested that blunt use is more common among blacks, older teens, and men. However, data pertaining to blunt use in non-adolescent African-American populations are scarce.

PURPOSE

To assess patterns of blunt use among young adult African-American men aged 19-30 years residing in five rural Black Belt counties in Alabama and to compare these data with those from tobacco cigarette smokers within the same study population.

METHODS

Verbal, face-to-face interviewer-administered survey of 415 participants collected and analyzed between December 2008 and February 2011.

RESULTS

159 respondents (38.3%) smoked cigarettes and 45 smoked blunts (10.8%). Of blunt smokers, 33 also smoked cigarettes (73.3%). Use of blunts was prevalent among unemployed, single men, and occupational blunt use was uncommon. Factors important in the initiation, maintenance, and cessation of product use were similar for blunt and cigarette smokers, especially product use and acceptance by friends. Legal concerns were an important factor facilitating blunt cessation.

CONCLUSIONS

Blunt use is relatively common among male African Americans aged 19-30 years and is frequently associated with concomitant cigarette use. Tobacco control efforts in this male African-American population should also address blunt usage.

Functional and Survival Outcomes in Patients Undergoing Total Glossectomy Compared with Total Laryngoglossectomy

Objective. To compare functional and survival outcomes for patients undergoing total glossectomy (TG) or total glossectomy plus laryngectomy (TGL) for advanced squamous cell carcinoma (SCC) of the tongue.

Study Design. Case series with chart review.

Setting. Academic tertiary referral center.

Subjects and Methods. There were 30 included patients (20 TG, 10 TGL). Outcomes included tumor recurrence, disease-free survival, and functional data (swallowing, gastrostomy tube dependence, speech, airway).

Results. Mean patient age was 56 years with a male predominance (90%). Compared with TG, TGL was more commonly performed for recurrent tumors (90% vs 55%, P = .06). Perineural invasion and extracapsular extension occurred more commonly in the TGL group (80% vs 50%, P = .12). At 12 months postoperatively, 61% of TG patients had disease recurrence compared with 40% of TGL patients ( P = .43), and 12-month disease-free survival was 40% (TG) and 50% (TGL). Functionally, more TG patients were totally gastrostomy tube dependent (70% vs 30%, P = .04), and 50% of TG patients were also tracheostomy dependent. Intelligible speech was achieved by 30% of TG and 10% of TGL patients ( P = .68).

Conclusion. Patients undergoing TGL had similar functional and survival outcomes to patients undergoing TG alone despite the presence of more locally advanced disease with greater adverse pathological features. Following TG alone, positive or close margins occurred most commonly at the inferior margin of resection (hyoid/valleculae), which could explain why TGL in patients with advanced tongue SCC may improve local disease control.

Tobacco use among rural African American young adult males

OBJECTIVE

Tobacco-related disease is a primary source of mortality for African American men. Recent studies suggest that alternative tobacco products may have supplanted cigarettes as the most common products used by young African Americans. Effective cessation strategies require community-specific prevalence data. This project measures the prevalence of 9 tobacco products among young African American men in rural Alabama.

STUDY DESIGN

Principles of community-based participatory research were used to design a verbally administered tobacco product survey to measure the prevalence and behavioral factors influencing use.

SETTING

Black Belt counties of rural Alabama.

SUBJECTS AND METHODS

African American men aged 19 to 30 years were recruited from the target counties. Participants were stratified by income and education level. Prevalence rates for 9 products were determined, and logistic regression analysis was performed.

RESULTS

A total of 415 participants completed surveys. Cigarettes were the most common product ever (54%) and currently (39.9%) used. Participants who attended school for more than 12 years or attended religious services were less likely to use cigarettes. Marijuana and blunts were used next most commonly. Only 35 respondents (8.9%) currently used mini-cigars. Other products, bidis/kreteks, smokeless tobacco, and pipes were used uncommonly in this sample.

CONCLUSIONS

Cigarettes remain the dominant tobacco product used by young African American men in rural Alabama. Cigarette prevalence far exceeds that measured statewide for African American men of the same age. Alternative products were not commonly used in this study population. Effective community-based intervention must target cigarette initiation and cessation in this vulnerable population.

Prior antibiotic therapy for acute sinusitis in children and the development of subperiosteal orbital abscess

OBJECTIVE

To determine the pattern of pre-hospitalization antibiotic use in children developing a subperiosteal orbital abscess (SPA) as a complication of acute sinusitis.

STUDY DESIGN AND SETTING

Ten-year retrospective chart review in a tertiary pediatric center of children under the age of 18 years requiring operative drainage of a SPA as a complication of acute sinusitis.

RESULTS

There were 39 children (M 25; F 14). Ten children (26%) received antibiotic therapy prior to admission, for a median duration of 1.6 days. On presentation, 72% had rhinorrhea and/or fever, for average durations of 3.9 and 2.5 days, respectively. Streptococcal species sensitive to penicillin were grown from 51% of SPA cultures.

CONCLUSION

Although few children in this series received antibiotics prior to their presentation with a SPA, prodromal sinusitis symptoms were of too short a duration to warrant institution of antibiotic therapy based on the American Academy of Pediatrics guidelines for acute sinusitis.

SIGNIFICANCE

SPA may not be a preventable complication of acute sinusitis in children.