Diagnosis and treatment of the immobile or hypomobile vocal fold are challenging for the otolaryngologist. True paralysis and paresis result from vocal fold denervation secondary to injury to the laryngeal or vagus nerve. Vocal fold paresis or paralysis may be unilateral or bilateral, central or peripheral, and it may involve the recurrent laryngeal nerve, superior laryngeal nerve, or both. The...

A three-dimensional biomechanical model of tissue deformation was developed to simulate dynamic vocal fold abduction and adduction. The model was made of 1721 nearly incompressible finite elements. The cricoarytenoid joint was modeled as a rocking-sliding motion, similar to two concentric cylinders. The vocal ligament and the thyroarytenoid muscle's fiber characteristics were implemented as a f...

BACKGROUND Revision laryngeal framework surgery is usually performed for medialisation laryngoplasty failure, rather than for failure after arytenoid adduction. We describe a new method for revision arytenoid adduction surgery, performed by directly pulling the lateral cricoarytenoid muscle ('lateral cricoarytenoid muscle pull surgery'). METHODS We describe a case of revision laryngeal framew...

In this study we have used a video-recording, retrospective analysis technique to evaluate the influence of the Airtraq laryngoscope manipulations and the resulting changes in position of the glottic opening and inter-arytenoids cleft, on the success rate of tracheal intubation. The video recordings of the internal views of 109 tracheal intubation attempts, in 50 anaesthetised patients were ana...

At the National Jewish Center for Immunology and Respiratory Medicine, approximately 10% of the patients referred for inpatient evaluation for refractory asthma have vocal cord dysfunction with¬ out any evidence of asthma. An additional 30% are diagnosed as having both vocal cord dysfunction and asthma.1 Based on this data, we would have expected a significant number of patients treated by Kass...

OBJECTIVES To map mechanoreceptor response in various regions of the laryngopharynx. METHODS Five patients with suspected laryngopharyngeal reflux and six healthy control subjects underwent stimulation of mechanoreceptors in the hypopharynx, interarytenoid area, arytenoids, aryepiglottic folds, and pyriform sinuses. The threshold stimuli evoking sensation and eliciting laryngeal adductor refl...

Laryngeal amyloidosis is uncommon and poorly understood, with limited long-term studies. Although primary localized laryngeal amyloidosis is extremely rare, it frequently involves the ventricles and the false and true vocal cords. We present a 58-year-old woman with localized laryngeal amyloidosis who presented no symptoms. On indirect laryngoscopic examination, the mass involved both arytenoid...

There are a variety of methods for treating unilateral vocal cord paralysis, but to date there have been few studies that compare these phonosurgical techniques by using objective measures of voice improvement. Vocal efficiency is an objective voice measure that is defined as the ratio of the acoustic power produced by the larynx to the subglottic air power. Vocal efficiency has been found to d...

for upper gastrointestinal endoscopy. A standard Olympus endoscope (GIF H190, Olympus, Center Valley, Pennsylvania, USA) was used for evaluation of gastritis. After 12 hours, the patient developed hoarseness, throat pain, and swelling. A computed tomography (CT) scan, barium swallow, and laryngeal electromyography (LEMG) studies showed normal findings. Strobovideolaryngoscopy showed a higher le...

INTRODUCTION Local anesthetic injection medialization of the paralyzed or paretic vocal fold has become the mainstay of management in the voice clinic in recent years. The popularity of this technique compared to suspension microlaryngoscopy and injection has grown for several reasons: avoidance of general anesthesia, avoidance of risks of rigid laryngoscopy, short procedure time, real-time ass...