Effects of Weight Loss on Acoustic Parameters After Bariatric Surgery

Souza, Lourdes Bernadete Rocha de; Santos, Marquiony Marques dos; Pernambuco, Leandro de Araújo; Godoy, Cynthia Meira de Almeida; Lima, Deysianne Meire da Silva

doi:10.1007/s11695-017-3018-6

Cited by 7 publications

(3 citation statements)

References 19 publications

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“…However, our findings also suggested a small increase in MPT after the surgery, possibly requiring a longer postoperative period or even greater weight loss for the MPT to improve significantly. A previous study showed that it was possible to see improvements in MPT eight months after the surgery [15]. In our study, patients of group D showed an increase in the MPT of the vowel /A/ after the surgery and in group B an almost significant positive relation between percentage of weight loss and MPT for /A/ and /I/.…”

Section: Discussionsupporting

confidence: 62%

“…ese investigations included a small number of individuals, less than ten, but use adequate methodology to evaluate voice. On the other hand, two studies reported an increase in MPT and in fundamental frequency eight months after surgery [11,15]. ese investigations included a larger number of obese patients (more than twenty), but of women only, which differs from our study group.…”

Section: Discussionmentioning

confidence: 63%

“…ere is a controversy about what happens to the MPT after surgical treatment of obesity and consequent weight loss. While some studies have shown increased MPT after surgery [11,15], others have shown no alteration [16,17]. Our hypothesis was that (a) obesity decreases MPT, which is improved after surgical treatment of obesity; (b) there is a correlation of the duration of MPT with weight, body mass index (BMI), and neck circumference; and (c) obesity causes abnormalities in forced expiratory volume in one second (FEV 1 ) and forced vital capacity (FVC).…”

Section: Introductionmentioning

confidence: 99%

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Maximum Phonation Time in People with Obesity Not Submitted or Submitted to Bariatric Surgery

2019

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Background. Our aim in this investigation was to evaluate maximum phonation time in people with obesity not submitted to surgery and in people with obesity submitted to bariatric surgery and compare it with maximum phonation time of healthy volunteers. The hypothesis was that the reduced maximum phonation time in people with obesity would be corrected after surgery due to weight loss. Method. Maximum phonation time was evaluated in 52 class III patients (Group A), 62 class III patients who were treated by surgery 3 to 115 months before (Group B), 20 controls (Group C), and 15 class III patients whose maximum phonation time was evaluated before and two to six months after surgery (Group D). Maximum phonation time was measured in the sitting position with the vowels /A/, /I/, and /U/. Results. Maximal phonation time was shorter in groups A and B compared with that of controls. There was an increase in maximal phonation time after surgery (Group B); however, the difference was not significant when compared with that in group A. In group D, maximal phonation time for /A/ increased after the surgery. In group A, there was a negative correlation between maximal phonation time and weight or body mass index and a positive correlation between maximal phonation time and height. In group B, there was an almost significant positive relation between percentage of weight loss and maximal phonation time for /A/ (p=0.08) and /I/ (p=0.07). Mean values of spirometry testing (FEV1, FVC, and FEV1/FVC) in people with obesity (groups A and B), expressed as percentage of the predicted value, were within the normal range. Conclusion. Compared with healthy controls, maximal phonation time is shorter in people with obesity, with a tendency to increase after bariatric surgery, as a possible consequence of weight loss.

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Section: Discussionsupporting

confidence: 62%

Section: Discussionmentioning

confidence: 63%