Evaluation of Various Laryngeal Pathologies: Videolaryngoscopy Versus Videolaryngostroboscopy

Abstract

Voice disorders are common in various laryngeal pathologies. The aim of this study is to evaluate the diagnostic value of videolaryngostroboscopy (VLSS) over videolaryngoscopy (VLS) in laryngeal pathologies. This was a prospective observational study. Detailed examination was carried out for 80 cases which presented with different laryngeal pathologies. Cases were evaluated on the basis of VLS and VLSS in the same sitting and diagnosed separately. Sensitivity, specificity, positive predictive value and negative predictive value were calculated to find out the relationship between diagnoses made by VLS and VLSS. The diagnostic value of VLSS is significant; it has 98.15% Sensitivity and 50% specificity over VLS in finding true vocal cord abnormalities. Around one third of the cases, i.e. 26 cases (32.50%) were misdiagnosed on VLS. Also, VLSS gave additional diagnosis in 6 cases (7.50%) which were missed on VLS. However, the diagnoses revealed by VLS and VLSS were same in 48 cases (60%). The diagnostic value of VLSS correlated with the type of laryngeal pathology. Through the present study, it has been deduced that VLSS is the superior modality for diagnosing laryngeal pathologies. It offers better visualisation of the finer aspects of the vocal cords. It has various advantages over VLS in terms of sensitivity and specificity.

Videolaryngoscopy, the Current Role in Airway Management

“…In addition to intubation, videolaryngoscopy has been shown to be successful for diagnostic and therapeutic surgical interventions in head and neck surgery. It has shown even superiority compared to videolaryngostroboscopy in diagnostic of different vocal pathologies [53]. Videolaryngoscopy can assist or replace traditional direct laryngoscopes for diagnostic of vocal pathology and small therapeutic Videolaryngoscopy, the Current Role in Airway Management DOI: http://dx.doi.org /10.5772/intechopen.93490 procedures such as vocal polypectomies [54].…”

Estudio retrospectivo para describir la prevalencia del hiatus glótico longitudinal y su relación con la patología orgánica en pacientes adultos con disfonía

“…A nivel laríngeo, la disfonía se caracteriza por una disfunción o insuficiencia del cierre glótico ya que el cierre cordal completo es una de las condiciones de la producción de la voz normal 3 . El método "gold standard" para la evaluación de los pacientes con trastornos de voz es la videolaringoestroboscopía (VLS) ya que permite la evaluación de la patología, de la onda mucosa y del tipo de cierre cordal, entre otros parámetros [4][5] . El hiatus o insuficiencia glótica es un hallazgo común en pacientes disfónicos que puede relacionarse tanto a lesiones benignas como a malignas, funcionales y orgánicas [6][7] .…”

Passive wideband concentric rings resonator for vocal cords abnormalities detection: Application on larynx cancer pathologies

“…Most of these studies analyze sound in the audible bandwidth, which gives incomplete information on the vibratory state of the vocal cords, while some others worked on the improvement of existing techniques such as local imaging or scanning. [7][8][9][10][11] In this context, this work aims to evaluate some larynx physical property variations through a non-intrusive passive smart listening collar. The latter can provide systematic and in vivo screening for some laryngeal diseases, including laryngeal cancer, by spectrotemporal analysis of the voice signal resonance.…”