Journal ArticleDOI
Physiology of obesity and effects on lung function.
Cheryl M. Salome,Gregory G. King,Gregory G. King,Gregory G. King,Norbert Berend,Norbert Berend +5 more
TLDR
Obesity has effects on lung function that can reduce respiratory well-being, even in the absence of specific respiratory disease, and may also exaggerate the effects of existing airway disease.Abstract:
In obese people, the presence of adipose tissue around the rib cage and abdomen and in the visceral cavity loads the chest wall and reduces functional residual capacity (FRC). The reduction in FRC and in expiratory reserve volume is detectable, even at a modest increase in weight. However, obesity has little direct effect on airway caliber. Spirometric variables decrease in proportion to lung volumes, but are rarely below the normal range, even in the extremely obese, while reductions in expiratory flows and increases in airway resistance are largely normalized by adjusting for lung volumes. Nevertheless, the reduction in FRC has consequences for other aspects of lung function. A low FRC increases the risk of both expiratory flow limitation and airway closure. Marked reductions in expiratory reserve volume may lead to abnormalities in ventilation distribution, with closure of airways in the dependent zones of the lung and ventilation perfusion inequalities. Greater airway closure during tidal breathing is associated with lower arterial oxygen saturation in some subjects, even though lung CO-diffusing capacity is normal or increased in the obese. Bronchoconstriction has the potential to enhance the effects of obesity on airway closure and thus on ventilation distribution. Thus obesity has effects on lung function that can reduce respiratory well-being, even in the absence of specific respiratory disease, and may also exaggerate the effects of existing airway disease.read more
Citations
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Journal ArticleDOI
Estado nutricional y composición corporal de cantantes líricos chilenos en relación con la tesitura de la voz
TL;DR: A cross-sectional and descriptive study was carried out in healthy lyrical singers of both sexes from the city of Concepcion, Chile as discussed by the authors, where the signers classified themselves as soprano, mezzo-soprano and alto (women), and tenor, baritone, and bass (men).
Journal ArticleDOI
Analysis of peak expiratory flow rate and spirometry in obese and nonobese schoolchildren
TL;DR: In this article , a study was conducted on school children in the age group of 11-17-year-old obese and nonobese students, where lung function was measured using the spirometry and mini-Wright's peak expiratory flow (PEF) meter.
Book ChapterDOI
How do I manage the morbidly obese critically ill patient
TL;DR: Despite higher morbidity associated with the critically ill obese, a paradoxical lower intensive care unit (ICU) mortality is demonstrated in comparison to nonobese ICU patients.
Journal ArticleDOI
Effect of the Dynamic Neuromuscular Stabilization Technique on Functional Capacity in Overweight and Obese Individuals: A Randomized Controlled Trial
Journal ArticleDOI
Perioperative management of a morbidly obese patient undergoing right upper lobectomy with poor pulmonary function: a case report.
TL;DR: A 75-year-old woman was referred to the hospital on June 25, 2014 with a cough with blood in phlegm for 1 week and the pathological diagnosis was invasive adenocarcinoma as mentioned in this paper.
References
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Journal ArticleDOI
The Effects of Body Mass Index on Lung Volumes
TL;DR: It was showed that BMI has significant effects on all of the lung volumes, and the greatest effects were on FRC and ERV, which occurred at BMI values < 30 kg/m2, which will assist clinicians when interpreting PFT results in patients with normal airway function.
Journal ArticleDOI
Effects of obesity on respiratory function
TL;DR: It is concluded that obesity does not usually preclude use of usual predictors, and an abnormal pulmonary function test value should be considered as caused by intrinsic lung disease and not by obesity, except in those with extreme obesity.
Journal ArticleDOI
Compliance of the respiratory system and its components in health and obesity.
A. Naimark,Reuben M. Cherniack +1 more
TL;DR: The compliance of the total respiratory system and its components was studied in normal and obese spontaneously breathing unanesthetized subjects and found that the former are more compliant than the latter.
Journal ArticleDOI
The effects of body mass on lung volumes, respiratory mechanics, and gas exchange during general anesthesia
Paolo Pelosi,M. Croci,I Ravagnan,Stefano Tredici,Alessia Pedoto,Alfredo Lissoni,Luciano Gattinoni +6 more
TL;DR: The effects of body mass index (BMI) on functional residual capacity (FRC), respiratory mechanics, respiratory mechanics (compliance and resistance), gas exchange, and the inspiratory mechanical work done per liter of ventilation during general anesthesia are investigated.
Journal ArticleDOI
Effects of Obesity on Respiratory Resistance
TL;DR: It is suggested that in addition to the elastic load, obese subjects have to overcome increased respiratory resistance resulting from the reduction in lung volumes related to being overweight.
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