Competência glótica na doença pulmonar obstrutiva crônica

Cassiani, Rachel de Aguiar; Aguiar-Ricz, Lilian Neto; Santos, Carla Manfredi dos; Martínez, José Antônio Baddini; Dantas, Roberto Oliveira

doi:10.1590/s2317-64312013000300003

Cited by 9 publications

(8 citation statements)

References 15 publications

(29 reference statements)

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“…24,35 Two other studies reported significantly greater S/Z ratios between asthma and COPD patients and controls. 23,36 This study found a significant difference in airflow based on assumed impaired power source with a small effect size. Regardless of etiology, those with impaired power source had significantly greater flows compared to those without (Table 1).…”

Section: Discussionmentioning

confidence: 63%

“…22 Differences in s/z ratios have been found with impaired power source for voicing. 23 -25 Differences in flow, GFI and s/z ratios have already been demonstrated between diagnoses of UVFP, BVFP, and presbylarynges. 5 Aging changes (primarily bowing) have been observed in the non-paretic vocal fold in some UVFP patients over 60 years of age.…”

Section: Introductionmentioning

confidence: 96%

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Predicting Airflow from Measures Sensitive to Mid-cord Glottal Gap During the COVID-19 Pandemic

Niermeyer

Diao

Bielamowicz

et al. 2023

Ann Otol Rhinol Laryngol

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Objectives: To determine if trans-laryngeal airflow, important in assessing vocal function in paresis/paralysis and presbylarynges patients with mid-cord glottal gaps, could be predicted by other measures sensitive to mid-cord glottal gap size but with smaller risks of spreading COVID-19, and if any patient factors need consideration. Methods: Four populations were: unilateral vocal fold paresis/paralysis (UVFP, 148), aging and UVFP (UVFP plus aging, 22), bilateral vocal fold paresis/paralysis without airway obstruction (BVFP, 49), and presbylarynges (66). Five measures were selected from the initial clinic visit: mean airflow from repeated /pi/ syllables, longer of 2 /s/ and 2 /z/ productions, higher of 2 cepstral peak prominence smoothed for vowel /a/ (CPPSa), and Glottal Function Index (GFI). S/Z ratios were computed. Stepwise regression models used 3 measures and 5 patient factors (age, sex, etiology, diagnosis, and potentially impaired power source for voicing) to predict airflow. Results: Log-transformations were required to normalize distributions of airflow and S/Z ratio. The final model revealed age, sex, impaired power source, log-transformed S/Z ratio, and GFI predicted log-transformed airflow ( R2 = .275, F[5,278] = 21.1; P < .001). Conclusions: The amount of variance explained by the model was not high, suggesting adding other predictive variables to the model might increase the variance explained.

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Section: Discussionmentioning

confidence: 63%

Section: Introductionmentioning

confidence: 96%

Predicting Airflow from Measures Sensitive to Mid-cord Glottal Gap During the COVID-19 Pandemic

Niermeyer

Diao

Bielamowicz

et al. 2023

Ann Otol Rhinol Laryngol

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“…Several studies call the attention to the increasing elevation of obesity predominance on worldwide population, including children, in accordance with what was also confirmed in the present study, highlighting a serious public health issue 9,16 . FVC that is the amount of air that can be expired from the lungs after a maximum inspiration [6][7][8] , has showed itself higher on children with more AC. Nevertheless, studies in adults demonstrate that the fat deposit's location influences the ventilation function alterations, such abnormalities being more common on central obesity, where the accumulation of adipose tissue is located on the waist region and has probably a mechanical effect right through the ribcage and the diaphragm restraining the lung expansion causing the reduction of lung volumes 17,18 .…”

Section: Discussionmentioning

confidence: 99%

“…The forced vital capacity (FVC) evaluation is very used and its measure determines the amount of air that can be expired from the lungs after a maximum inspiration 6 . Maximum phonation time (MPT) evaluation refers to the maximum time an individual can stand an emission during the same expiration, demonstrating the effectiveness of the respiratory and laryngeal coordination 1,3,[5][6][7][8] .…”

Section: Introductionmentioning

confidence: 99%

Capacidade vital forçada e tempos máximos de fonação em relação à circunferência abdominal e ao estado nutricional de crianças

2016

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Purpose: to evaluate and correlate forced vital capacity and maximum phonation time in relation to abdominal circumference and nutritional status of children. Methods: cross-sectional study of 82 children aged between eight and ten years, divided by the nutritional status (eutrophic, overweight and obese) and the percentile of abdominal circumference (≤ 25, 25 the 75, ≥ 75). There was forced vital capacity by spirometry and maximum phonation time the /e/, /a/ and /e/ voiceless (/ė/). Results: the forced vital capacity was higher in children with higher abdominal circumference (p = 0.003) and percentiles of abdominal circumference 25-75 had longer sustain the vowels (p <0.05). No statistically significant difference in forced vital capacity and TMF /e,a,ė/ in relation to nutritional status. There was strong correlation between /a/ maximum phonation time and maximum phonation time /e/ (0.84). Conclusion: the nutritional status of children did not influence the volume of expired air and measures of maximum phonation time, but it is perceived that a higher abdominal circumference, which is located fat, increases lung function. Keywords: Obesity; Breathing; Voice RESUMO Objetivo: avaliar e correlacionar capacidade vital forçada e tempos máximos de fonação em relação à circunferência abdominal e ao estado nutricional de crianças. Métodos: estudo transversal analítico com 82 crianças, entre oito e dez anos de idade, divididas pelo estado nutricional (eutrófica, sobrepeso e obesas) e pelo percentil da circunferência abdominal (≤25, 25 a 75 e ≥75). Verificou-se a capacidade vital forçada pela espirometria e os tempos máximos de fonação de /e/, /a/ e /e/ áfono (/ė/). Resultados: a capacidade vital forçada foi maior nas crianças com maior circunferência abdominal (p=0,003) e as com percentis da circunferência abdominal de 25 a 75 tiveram maiores tempos máximos de fonação /e,a,ė/ (p<0,05). Não foi encontrada diferença estatística significante das variáveis capacidade vital forçada e tempos máximos de fonação/e,a,ė/ em relação ao estado nutricional. Existiu correlação forte entre tempo máximo de fonação /a/ e tempo máximo de fonação /e/ (0,84). Conclusão: o estado nutricional das crianças não influenciou o volume de ar expirado e às medidas de tempos máximos de fonação, mas percebe-se que uma maior circunferência abdominal, que representa a gordura localizada, aumenta a função pulmonar.

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“…4 This can be used as an assessment and treatment tool to rule out pathology and to monitor the progress during and post treatment of voice disorders. 5 Values below 10 second are considered altered. 6 Low MPD values are related to laryngeal pathology.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Maximum Phonation Duration and S/Z Ratio in Individuals with Asthma, Tuberculosis and Clinically Normal Voice

Shrestha

Adhikari

2019

Med. J. Shree Birendra Hosp.

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Introduction: The ability of a person to phonate a sound gets affected in different laryngeal and respiratory pathology which can be measured by the help of two measure called as Maximum Phonation Duration (MPD) and S/Z ratio that helps to assess the efficiency of respiratory and phonatory system. The aim of this study is to measure the MPD and S/Z ratio in Normal, Tuberculosis and Asthma group patient. Methods: The participant included Normal, Asthma and Tuberculosis patient where the recording was made in a quiet room with the help of PRAAT software and the participant were asked to sustain phonation of sound on single breath. Analysis was done with helps of SPSS version 25.0. Results: There was a significant difference noted in MPD of /a/, /i/, /u/ sound between control and experimental group. MPD were significantly shorter in Asthma and Tuberculosis group compared to Normal group with no significant difference in S/Z ratio. Conclusions: Maximum Phonation Duration is more reduced in Asthma and Tuberculosis patient compared to Normal group which indicate Asthma and Tuberculosis patient has to put more effort to phonate a sound.

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Competência glótica na doença pulmonar obstrutiva crônica

Cited by 9 publications

References 15 publications

Predicting Airflow from Measures Sensitive to Mid-cord Glottal Gap During the COVID-19 Pandemic

Predicting Airflow from Measures Sensitive to Mid-cord Glottal Gap During the COVID-19 Pandemic

Capacidade vital forçada e tempos máximos de fonação em relação à circunferência abdominal e ao estado nutricional de crianças

Comparison of Maximum Phonation Duration and S/Z Ratio in Individuals with Asthma, Tuberculosis and Clinically Normal Voice

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