The ability of the noninvasive methods forced oscillation technique (Rosc), spirometry and flow-volume curves to detect and quantify laryngeal obstruction, using assessment of orolaryngeal (upper) airway resistance (Rol) as reference, was compared in 55 patients with various laryngeal diseases. Statistical analysis was performed by means of sensitivity/specificity, simple regression, stepwise r...

The extent to which laryngeal-induced flow features penetrate into the upper tracheobronchial (TB) airways and their related impact on particle transport and deposition are not well understood. The objective of this study was to evaluate the effects of including the laryngeal jet on the behavior and fate of inhaled aerosols in an approximate model of the upper TB region. The upper TB model was ...

In this work, we evaluate laryngeal ultrasound as a technique to study the state and height of the larynx. We first discuss general structural registration in laryngeal ultrasound (LUS) and illustrate the articulation of glottal stop. We then present a method for quantifying change in larynx height using optical flow analysis on laryngeal ultrasound video data. The analysis is quantitatively va...

Introduction The study examined the effects of cuff inflation of a ProSeal Laryngeal Mask Airway on the carotid bulb during sevoflurane induction in pediatric population. The hemodynamic parameters measured were: systolic and diastolic pressure, heart rate and sovraortic flow trough measurements of bilateral carotid cross sectional area, velocity of blood flow, resistance index, flow accelerati...

tuberculosis is a major health problem in iran and its laryngeal involvement is not uncommon. laryngeal tuberculosis is so infectious and delay in diagnosis and treatment could result spread of disease and causes divesting complications. we reviewed clinical and para-clinical characteristics of patients with laryngeal tuberculosis in iran. in a cross sectional study, patients with laryngeal tub...

References 1 Hemmerling TM, Michaud G, Deschamps S, Trager G. ‘Patients who sing need to be relaxed’--neuromuscular blockade as a solution for air-leaking during intermittent positive pressure ventilation using LMA (Letter). Can J Anesth 2005; 52: 549. 2 Figueredo E, Vivar-Diago M, Munoz-Blanco F. Laryngo-pharyngeal complaints after use of the laryngeal mask airway. Can J Anesth 1999; 46: 220–5...

This paper overviews studies on the production mechanism of the laryngeal voices in throat singing. Physiological observations of the larynx have clarified that ventricular fold vibration essentially contributes to the generation of the unique laryngeal voices. A physical model simulation using a two-by-two mass model supports the observed vibratory patterns of the vocal and ventricular folds. ...

INTRODUCTION Traditionally, pausing chest compressions during airway management in a cardiac arrest has been the accepted norm. However, updated American Heart Association and the European Resuscitation Council guidelines for Advanced Cardiac Life Support emphasize reducing pauses in chest compressions, often referred to as "no-flow time," to improve return of spontaneous circulation. We used s...

The airflow in the modeled glottal constriction was simulated by the solutions of the Navier-Stokes equations for laminar flow, and the corresponding Reynolds equations for turbulent flow in generalized, nonorthogonal coordinates using a numerical method. A two-dimensional model of laryngeal flow is considered and aerodynamic properties are calculated for both laminar and turbulent steady flows...

A noninvasive clinical method for estimating laryngeal airway resistance during vowel production is described. Resistance is calculated from the ratio of translaryngeal pressure to translaryngeal flow, the first determined from measurement of oral pressure and the second determined from measurement of airway-opening flow made during the production of a specially designed utterance. Application ...