The Experts below are selected from a list of 174 Experts worldwide ranked by ideXlab platform
Michael F Vaezi - One of the best experts on this subject based on the ideXlab platform.
-
prevalence of laryngeal irritation signs associated with reflux in asymptomatic volunteers impact of endoscopic technique rigid vs Flexible Laryngoscope
Laryngoscope, 2005Co-Authors: Claudio F Milstein, Samer Charbel, Douglas M Hicks, Tom I Abelson, Joel E Richter, Michael F VaeziAbstract:Objectives: The objectives of this study were to 1) determine the prevalence of ENT findings in the normal asymptomatic population and 2) to compare findings between Flexible and rigid Laryngoscopes in an attempt to increase specificity of diagnosis of reflux in endoscopic laryngeal examinations. Study Design: Prospective study. Methods: Fifty-two nonsmoker volunteers (24 male, 28 female), mean age of 42.7 years, with no history of ENT abnormalities or gastroesophageal reflux disease, underwent both rigid and Flexible videolaryngologic examinations with a digital endoscopic unit. A group of three expert judges reviewed the oral and transnasal examinations blindly and independently for physical signs of irritation/inflammation commonly associated with reflux. Results: Atleast one sign of tissue irritation was detected in 93% and 83% of the population when using a Flexible and a rigid Laryngoscope, respectively. Results showed a high incidence of posterior commissure bar (53.2% and 51.9%), arytenoid complex edema/erythema (76.3% and 53.2%), and pseudosulcus (37.2% and 7.7%). Most signs were more frequently detected on Flexible transasal examinations than with rigid transoral examinations: posterior pharyngeal wall (<0.01), interarytenoid irritation (<0.01), arytenoids complex irritation (<0.01), ventricular obliteration (<0.01), and pseudosulcus (<0.01). Conclusions: Several signs of posterior laryngeal irritation (e.g., interarytenoid bar, erythema of the medial wall of the arytenoids), which are generally considered to be signs of laryngopharyngeal reflux, are present in a high percentage of nonsymptomatic individuals, raising question about their diagnostic specificity. In addition, these signs were more often detected with Flexible than with rigid Laryngoscopes, suggesting that Flexible laryngoscopy is more sensitive but less specific in identifying laryngeal tissue irritation.
-
Prevalence of laryngeal irritation signs associated with reflux in asymptomatic volunteers: impact of endoscopic technique (rigid vs. Flexible Laryngoscope).
Laryngoscope, 2005Co-Authors: Claudio F Milstein, Samer Charbel, Douglas M Hicks, Tom I Abelson, Joel E Richter, Michael F VaeziAbstract:Objectives: The objectives of this study were to 1) determine the prevalence of ENT findings in the normal asymptomatic population and 2) to compare findings between Flexible and rigid Laryngoscopes in an attempt to increase specificity of diagnosis of reflux in endoscopic laryngeal examinations. Study Design: Prospective study. Methods: Fifty-two nonsmoker volunteers (24 male, 28 female), mean age of 42.7 years, with no history of ENT abnormalities or gastroesophageal reflux disease, underwent both rigid and Flexible videolaryngologic examinations with a digital endoscopic unit. A group of three expert judges reviewed the oral and transnasal examinations blindly and independently for physical signs of irritation/inflammation commonly associated with reflux. Results: Atleast one sign of tissue irritation was detected in 93% and 83% of the population when using a Flexible and a rigid Laryngoscope, respectively. Results showed a high incidence of posterior commissure bar (53.2% and 51.9%), arytenoid complex edema/erythema (76.3% and 53.2%), and pseudosulcus (37.2% and 7.7%). Most signs were more frequently detected on Flexible transasal examinations than with rigid transoral examinations: posterior pharyngeal wall (
Chihhao Lu - One of the best experts on this subject based on the ideXlab platform.
-
ortner s syndrome a rare cause of unilateral vocal cord paralysis a case report
Kaohsiung Journal of Medical Sciences, 2009Co-Authors: Rongfeng Chen, Chihhao LuAbstract:Hoarseness attributed to vocal cord palsy is associated with injury to the recurrent laryngeal nerve. Hoarseness resulting from left recurrent laryngeal nerve palsy, cardiovocal syndrome (Ortner's syndrome), has rarely been reported. We present the case of a 79-year-old male suffering from hoarseness in the absence of significant clinical manifestations. A Flexible Laryngoscope was used to identify a paralyzed left vocal cord, and contrast-enhanced computed tomography showed a large thrombus-filled aneurysmal dilation of the aortic arch. The severity of the vocal cord paralysis was improved by surgical intervention. This case illustrates that life-threatening cardiovascular comorbidities can cause hoarseness and that an impaired recurrent laryngeal nerve might be correctable.
-
Ortner's Syndrome—a Rare Cause of Unilateral Vocal Cord Paralysis: A Case Report
Kaohsiung Journal of Medical Sciences, 2009Co-Authors: Rongfeng Chen, Chihhao LuAbstract:Hoarseness attributed to vocal cord palsy is associated with injury to the recurrent laryngeal nerve. Hoarseness resulting from left recurrent laryngeal nerve palsy, cardiovocal syndrome (Ortner's syndrome), has rarely been reported. We present the case of a 79-year-old male suffering from hoarseness in the absence of significant clinical manifestations. A Flexible Laryngoscope was used to identify a paralyzed left vocal cord, and contrast-enhanced computed tomography showed a large thrombus-filled aneurysmal dilation of the aortic arch. The severity of the vocal cord paralysis was improved by surgical intervention. This case illustrates that life-threatening cardiovascular comorbidities can cause hoarseness and that an impaired recurrent laryngeal nerve might be correctable.
Steven M Zeitels - One of the best experts on this subject based on the ideXlab platform.
-
Office-based and microlaryngeal applications of a fiber-based thulium laser.
Annals of Otology Rhinology and Laryngology, 2006Co-Authors: Steven M Zeitels, James A Burns, Lee M Akst, Matthew S Broadhurst, Robert E Hillman, R. Rox AndersonAbstract:Objectives:The carbon dioxide (CO2) laser is the premier dissecting instrument for hemostatic cutting and ablation during endolaryngeal surgery. However, microlaryngeal tangential dissection and office-based photoablation have been limited by the lack of a fiber-based delivery system. To address this limitation, a new laser was designed, which is a diode-pumped solid-state laser with a thulium-doped yttrium-aluminum-garnet laser rod. It produces a continuous-wave beam with a wavelength of 2,013 nm and a target chromophore of water. This new laser functions similarly to a CO2 laser with the benefit of being delivered through a small glass fiber (0.365 to 0.550 mm).Methods:A prospective pilot trial was done in 74 cases to explore applications of the new thulium laser. Thirty-two procedures were done with the laser used as an ablating instrument and topical anesthesia through a Flexible Laryngoscope (papillomatosis, 20; microinvasive carcinoma, 6; benign supraglottic lesions, 3; edema, 2; granuloma, 1). Fort...
-
comparison of a Flexible Laryngoscope with calibrated sizing function to intraoperative measurements
Annals of Otology Rhinology and Laryngology, 2006Co-Authors: James B Kobler, David Rosen, James A Burns, Lee M Akst, Matthew S Broadhurst, Steven M Zeitels, Robert E HillmanAbstract:Objectives:The objectives were to assess the clinical performance and accuracy of a prototype fiberoptic transnasal laryngeal endoscope with an auxiliary optical system that allows images to be spatially calibrated.Methods:A novel fiberoptic endoscope was developed that projects green laser beams across the field of view from a separate optical channel. According to the location of the spots in the field of view, the images can be calibrated with a software routine. To assess its performance, we compared measurements of 14 lesions imaged with the calibrated endoscope and during microlaryngoscopy, where a calibration instrument was placed next to the lesions. Four clinicians measured lesion length, width, and area from the collected images.Results:The calibrated endoscope performed as well as current Flexible fiberoptic Laryngoscopes in terms of image quality and patient comfort. For lesions with well-defined borders, the error ranged from 14% to 23% for length, from 20% to 30% for width, and from 33% to 5...
-
Pediatric video laryngo-stroboscopy
International Journal of Pediatric Otorhinolaryngology, 2004Co-Authors: Christopher J. Hartnick, Steven M ZeitelsAbstract:Summary Objective : Laryngo-stroboscopy remains as the clinical gold standard for assessing properties of the glottal phonatory and valvular function. This includes deficits of closure as well as mucosal wave irregularities secondary to abnormal zones of pliability and symmetry. Per-oral stroboscopy has technical limitations in children due to the size of the telescope and issues of patient compliance. However, Flexible laryngoscopy is readily performed in newborns and young children. This paper describes the use of a new trans-nasal, digital Flexible Laryngoscope, which allows for laryngo-stroboscopy in children. Methods and results : A prospective longitudinal series was done on 25 children ages 19 months–13 years (mean age, 7.0 years) with this new technology. All 25 were successfully examined. Conclusions : New technological advancements in the design of digital Flexible endoscopes has allowed for laryngo-stroboscopy, and therefore, provides the potential for expanding the population of children with vocal disorders in whom stroboscopic imaging is possible. Larger studies will be necessary to determine its limitations related to age, development, and disease. As the study of pediatric voice disorders continues to evolve, accurate diagnosis is essential to apply state of the art non-operative and phonosurgical interventions. Further longitudinal studies are currently underway to continue to refine techniques of pediatric voice assessment and to define limitations of this new technology.
Claudio F Milstein - One of the best experts on this subject based on the ideXlab platform.
-
prevalence of laryngeal irritation signs associated with reflux in asymptomatic volunteers impact of endoscopic technique rigid vs Flexible Laryngoscope
Laryngoscope, 2005Co-Authors: Claudio F Milstein, Samer Charbel, Douglas M Hicks, Tom I Abelson, Joel E Richter, Michael F VaeziAbstract:Objectives: The objectives of this study were to 1) determine the prevalence of ENT findings in the normal asymptomatic population and 2) to compare findings between Flexible and rigid Laryngoscopes in an attempt to increase specificity of diagnosis of reflux in endoscopic laryngeal examinations. Study Design: Prospective study. Methods: Fifty-two nonsmoker volunteers (24 male, 28 female), mean age of 42.7 years, with no history of ENT abnormalities or gastroesophageal reflux disease, underwent both rigid and Flexible videolaryngologic examinations with a digital endoscopic unit. A group of three expert judges reviewed the oral and transnasal examinations blindly and independently for physical signs of irritation/inflammation commonly associated with reflux. Results: Atleast one sign of tissue irritation was detected in 93% and 83% of the population when using a Flexible and a rigid Laryngoscope, respectively. Results showed a high incidence of posterior commissure bar (53.2% and 51.9%), arytenoid complex edema/erythema (76.3% and 53.2%), and pseudosulcus (37.2% and 7.7%). Most signs were more frequently detected on Flexible transasal examinations than with rigid transoral examinations: posterior pharyngeal wall (<0.01), interarytenoid irritation (<0.01), arytenoids complex irritation (<0.01), ventricular obliteration (<0.01), and pseudosulcus (<0.01). Conclusions: Several signs of posterior laryngeal irritation (e.g., interarytenoid bar, erythema of the medial wall of the arytenoids), which are generally considered to be signs of laryngopharyngeal reflux, are present in a high percentage of nonsymptomatic individuals, raising question about their diagnostic specificity. In addition, these signs were more often detected with Flexible than with rigid Laryngoscopes, suggesting that Flexible laryngoscopy is more sensitive but less specific in identifying laryngeal tissue irritation.
-
Prevalence of laryngeal irritation signs associated with reflux in asymptomatic volunteers: impact of endoscopic technique (rigid vs. Flexible Laryngoscope).
Laryngoscope, 2005Co-Authors: Claudio F Milstein, Samer Charbel, Douglas M Hicks, Tom I Abelson, Joel E Richter, Michael F VaeziAbstract:Objectives: The objectives of this study were to 1) determine the prevalence of ENT findings in the normal asymptomatic population and 2) to compare findings between Flexible and rigid Laryngoscopes in an attempt to increase specificity of diagnosis of reflux in endoscopic laryngeal examinations. Study Design: Prospective study. Methods: Fifty-two nonsmoker volunteers (24 male, 28 female), mean age of 42.7 years, with no history of ENT abnormalities or gastroesophageal reflux disease, underwent both rigid and Flexible videolaryngologic examinations with a digital endoscopic unit. A group of three expert judges reviewed the oral and transnasal examinations blindly and independently for physical signs of irritation/inflammation commonly associated with reflux. Results: Atleast one sign of tissue irritation was detected in 93% and 83% of the population when using a Flexible and a rigid Laryngoscope, respectively. Results showed a high incidence of posterior commissure bar (53.2% and 51.9%), arytenoid complex edema/erythema (76.3% and 53.2%), and pseudosulcus (37.2% and 7.7%). Most signs were more frequently detected on Flexible transasal examinations than with rigid transoral examinations: posterior pharyngeal wall (
Charles Blakely Simpson - One of the best experts on this subject based on the ideXlab platform.
-
office based 532 nanometer pulsed potassium titanyl phosphate laser procedures in laryngology
Otolaryngologic Clinics of North America, 2019Co-Authors: Kathleen M Tibbetts, Charles Blakely SimpsonAbstract:With fiber-based lasers that may be passed via the working channel of a Flexible Laryngoscope, in-office laser laryngeal surgery has become possible. The potassium-titanyl-phosphate laser has several features that make it ideal for laryngeal surgery, and it is now the laser of choice for in-office management of a variety of laryngeal lesions. Its applications have expanded significantly since its introduction, with reports of new indications continuing to appear in the literature. This article provides a comprehensive review of the indications and technical details of in-office potassium-titanyl-phosphate laser laryngeal surgery, and a summary of the existing literature regarding outcomes of these procedures.