نتایج جستجو برای: maximum phonation time
تعداد نتایج: 2110234 فیلتر نتایج به سال:
BACKGROUND Stenosis of the glottis can influence both phonation and respiration. The management of laryngeal web is difficult because of the tendency of readhesion to recur locally. METHODS Twenty-five patients with web from the anterior glottis to the entire membranous portion of the vocal folds were included. All patients underwent endoscopic mucosal suturing or combined with placement of l...
This study aimed to determine the relation between the regression slope relating minute ventilation to carbon dioxide output (VE/VCO2 slope) and maximum phonation time (MPT), and the MPT required to attain a threshold value for VE/VCO2 slope of ≤ 34 in chronic heart failure (CHF) patients. This cross-sectional study enrolled 115 CHF patients (mean age, 54.5 years; men, 84.9%). VE/VCO2 slope was...
Injection laryngoplasty has gained popularity as a treatment modality for glottal insufficiency. Several approaches have been described, specifically transcutaneous, transoral and transnasal. The authors describe a novel technique performed successfully on three subjects, namely endoscopic injection laryngoplasty using the modified Guedel oral airway. There was marked improvement in dysphonia, ...
BACKGROUND Treatment of laryngeal cancers, may include surgery, radiotherapy, chemotherapy, or a combination. Total laryngectomy (TL) has been the standard surgical treatment. Partial laryngectomy procedures were performed, their advantage over TL is preservation of laryngeal functions. METHODS The investigation was carried out on a group of 20 patients (3 female and 17 male), who underwent s...
INTRODUCTION With the development of new ENT techniques, many male transsexuals who wish to become women usually request a surgical procedure to raise the fundamental frequency of the voice (feminization). The ENT specialist and the voice-therapist have to use an interdisciplinary approach to this growing social demand. The aim of this study was to show the results in a group of transsexual pat...
BACKGROUND Voice change is one of the earliest features of Parkinson's disease. However, quantitative studies of vocal fold dynamics which are needed to provide insight into disease biology, aid diagnosis, or track progression, are few. METHODS We therefore quantified arytenoid cartilage movements and glottic area during repeated phonation in 15 patients with Parkinson's disease (symptom dura...
This paper is concerned with the study on the phonation models of tone and diatone in Mandarin. The method used in this study has 3 parts: 1) extracting glottal signal by inverse filtering; 2) extracting phonation parameters from glottal signal in time domain; 3) modeling the phonation natures of tones and diatones by polynomial curve fitting. There are 3 conclusions, which are 1) there are 3 t...
Autogenous fat augmentation for glottic insufficiency has commonly been administered in patients with vocal fold paralysis. The purpose of the present study was to evaluate the efficiency of autologous fat injection for cases of deficiency of glottal closure such as sulcus vocalis, laryngeal trauma and postoperative scarring. Fat injection was performed on 4 cases of sulcus vocalis and 3 cases ...
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