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Unilateral Vocal Fold Immobility Disorders
Unilateral Vocal Fold Paralysis in Parkinson Disease: Case Report and Review of the Literature
The objective of this study was to report the first case of unilateral vocal fold paralysis in a patient with Parkinson disease (PD) and to review the literature.The 3D Printing of the Paralyzed Vocal Fold: Added Value in Injection Laryngoplasty
Three-dimensional (3D) printing has had numerous applications in various disciplines, especially otolaryngology. We report the first case of a high-fidelity 3D-printed model of the vocal cords of a patient with unilateral vocal cord paralysis in need of injection laryngoplasty.Lewis-Sumner Syndrome Manifesting as Unilateral Vocal Fold Paresis and Laryngeal Fasciculations
Lewis-Sumner syndrome (LSS) is a rare disease characterized by asymmetrical and multifocal mononeuropathy commonly located in the upper limbs. Some rare cases affecting cranial nerve have been described, but LSS is unknown to affect especially laryngeal nerves. This paper presents the first case of unilateral vocal fold paresis caused by an LSS in a 59-year-old man complaining of dysphonia, breathy voice, and vocal fatigue. Epidemiology, clinical features, diagnosis, and treatment will be described.Medialization Laryngoplasty After Injection Augmentation
This study aims to assess the effect of vocal fold injection augmentation (IA) on subsequent medialization laryngoplasty (ML).Pressure and Flow Comparisons Across Vocal Pathologies
The aim of this study was to aid in the distinction among hyperadductive dysphonias by evaluating peak glottal pressure, release burst, and mid and final airflow values across repeated /pa/ syllable trains.Does Even Low-Grade Dysphonia Warrant Voice Center Referral?
Data regarding the referral of dysphonic patients to specialty voice clinics are limited. The objective of this study is to examine the relationship between low perceptual dysphonia severity and subtle laryngeal findings to discern if this can help guide referral.A Systematic Review of Voice Therapy: What “Effectiveness” Really Implies
Behavioral voice therapy guided by a speech-language pathologist is recommended as the main treatment approach for many kinds of voice disorders. Encouraging evidence regard of good outcomes from voice therapy has been found in two previous reviews on broad patient populations. However, no definitive conclusion on the effectiveness of direct voice therapy can be drawn from these reviews due to limitations of the included studies.Real-time Simultaneous DKG and 2D DKG Using High-speed Digital Camera
For the evaluation of voice disorders, direct observation of vocal cord vibration is important. Among the various methods, laryngeal videostroboscopy (LVS) is widely used, but it was not a true image because it collects images from different cycles. In contrast, high-speed videoendoscopy and videokymography have much higher frame rates and can assess functional and mobility disorders.Evaluation of Vocal Fold Motion Abnormalities: Are We All Seeing the Same Thing?
Flexible laryngoscopy is the principle tool for the evaluation of vocal fold motion. As of yet, no consistent, unified outcome metric has been developed for vocal fold paralysis/immobility research. The goal of this study was to evaluate vocal fold motion assessment (inter- and intra-rater reliability) among general otolaryngologists and fellowship-trained laryngologists.Laboratory Evaluation of Vocal Fold Paralysis and Paresis
This study aimed to assess the value of comprehensive laboratory evaluation in patients with vocal fold paralysis or paresis.Adverse Reaction to Hyaluronic Acid Injection Laryngoplasty: A Case Report
Injection laryngoplasty using hyaluronic acid is a safe procedure commonly performed on patients with glottic insufficiency.Shape of Thyroid Cartilage Influences Outcome of Montgomery Medialization Thyroplasty: A Gender Issue
This study aimed to determine whether the shape of the thyroid cartilage and gender influence voice outcomes after a Montgomery thyroplasty implant system (MTIS).Optimized Nonlinear Dynamic Analysis of Pathologic Voices With Laryngeal Paralysis Based on the Minimum Embedding Dimension
The present study aims to compare the correlation dimension and second-order entropy at the minimum embedding dimension with the correlation dimension (D2) and second-order entropy (K2) based on their efficiency and accuracy in differentiating between normal and pathologic voices.Correlation of VHI-30 to Acoustic Measurements Across Three Common Voice Disorders
Voice disorders that affect the quality of voice also result in varying degrees of psychological and social problems. The research question here is whether the correlations between Voice Handicap Index (VHI)-30 scores and objective acoustic measures differ in patients with different types of voice disorders.Laryngeal Electromyography for Prognosis of Vocal Fold Paralysis
This study aimed to determine the value of laryngeal electromyography in the prognosis of vocal fold paralysis.Phasegram Analysis of Vocal Fold Vibration Documented With Laryngeal High-speed Video Endoscopy
In a recent publication, the phasegram, a bifurcation diagram over time, has been introduced as an intuitive visualization tool for assessing the vibratory states of oscillating systems. Here, this nonlinear dynamics approach is augmented with quantitative analysis parameters, and it is applied to clinical laryngeal high-speed video (HSV) endoscopic recordings of healthy and pathological phonations.Clinical and Electromyographic Characteristics of Unilateral Vocal Fold Paralysis With Lower Cranial Nerve Injury
The aim was to investigate the clinical and electromyographic characteristics of patients with unilateral vocal fold paralysis (UVFP) combined with lower cranial nerve injury.Longitudinal Voice Outcomes After Voice Therapy in Unilateral Vocal Fold Paralysis
To investigate the long-term effectiveness of voice therapy in vocal outcomes of patients with unilateral vocal fold paralysis (UVFP) and vocal productions of patients with long-standing treatment-naïve UVFP treated with voice therapy.Quantitative Analysis of Vocal Fold Vibration in Vocal Fold Paralysis With the Use of High-speed Digital Imaging
The goal of this work was to objectively elucidate the vibratory characteristics of vocal fold paralysis (VFP) using high-speed digital imaging (HSDI).Air Pressure and Contact Quotient Measures During Different Semioccluded Postures in Subjects With Different Voice Conditions
The purpose of this study was to investigate the effect of phonation into tubes in air and tubes submerged in water on air pressure variables and vocal fold adduction in subjects with different voice conditions.Analysis and Classification of Voice Pathologies Using Glottal Signal Parameters
The classification of voice diseases has many applications in health, in diseases treatment, and in the design of new medical equipment for helping doctors in diagnosing pathologies related to the voice. This work uses the parameters of the glottal signal to help the identification of two types of voice disorders related to the pathologies of the vocal folds: nodule and unilateral paralysis. The parameters of the glottal signal are obtained through a known inverse filtering method, and they are used as inputs to an Artificial Neural Network, a Support Vector Machine, and also to a Hidden Markov Model, to obtain the classification, and to compare the results, of the voice signals into three different groups: speakers with nodule in the vocal folds; speakers with unilateral paralysis of the vocal folds; and speakers with normal voices, that is, without nodule or unilateral paralysis present in the vocal folds.Interrater Reliability in Analysis of Laryngoscopic Features for Unilateral Vocal Fold Paresis
The diagnosis of paresis in patients with vocal fold motion impairment remains a challenge. In particular, laryngoscopy examination may result in significant disagreement in diagnosis among providers. We hypothesize that systematically evaluating for a standard set of clinical parameters will increase the diagnostic concordance among providers.Features of Vocal Fold Adductor Paralysis and the Management of Posterior Muscle in Thyroplasty
To present the pathologic characteristics of unilateral recurrent nerve adductor branch paralysis (AdBP), and to investigate the management of posterior cricoarytenoid (PCA) muscle on the basis of our experience of surgical treatment for AdBP.Quantitative Analysis of the Visor-Like Vertical Motion of the Cricoarytenoid Joint in the Living Subject
The cricoarytenoid joint has a loose capsule and large cavity and may allow the arytenoid distanced from the cricoid cartilage. The objective was to quantify vertical motion of the arytenoid cartilage in the living subject.Sex Differences in Pitch Range and Speech Fundamental Frequency After Arytenoid Adduction and Thyroplasty
The purpose of this study was to clarify the sex differences in pitch range (PR) and speech fundamental frequency (SFF) after arytenoid adduction (AA) combined with type 1 thyroplasty (TP1) in patients with unilateral vocal fold paralysis (UVFP) and to assess the cause of these differences.
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