Factores que afectan a la función pulmonar: una revisión bibliográfica

Talaminos-Barroso, Alejandro; Martín, Eduardo Márquez; Romero, Laura María Roa; Ruiz, Francisco Órtega

doi:10.1016/j.arbres.2018.01.030

Cited by 38 publications

(9 citation statements)

References 67 publications

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“…It has been reported that the total lung capacity measured by pulmonary function test (PFT) in the standing or sitting position is higher than that determined in the supine position 7 , 8 ; however, unilateral lung volume or each lung lobe volume cannot be measured by PFT. Conversely, CT images can provide the volumes of the unilateral lung and each lung lobe 9 – 12 and reportedly enables more accurate predictions of postoperative residual pulmonary function in patients with lung cancer than does the segment-counting method, which is based solely on the number of remaining pulmonary segments 9 – 11 .…”

Section: Introductionmentioning

confidence: 99%

Comparison of inspiratory and expiratory lung and lobe volumes among supine, standing, and sitting positions using conventional and upright CT

Yamada

Chubachi

et al. 2020

Sci Rep

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Currently, no clinical studies have compared the inspiratory and expiratory volumes of unilateral lung or of each lobe among supine, standing, and sitting positions. In this prospective study, 100 asymptomatic volunteers underwent both low-radiation-dose conventional (supine position, with arms raised) and upright computed tomography (CT) (standing and sitting positions, with arms down) during inspiration and expiration breath-holds and pulmonary function test (PFT) on the same day. We compared the inspiratory/expiratory lung/lobe volumes on CT in the three positions. The inspiratory and expiratory bilateral upper and lower lobe and lung volumes were significantly higher in the standing/sitting positions than in the supine position (5.3–14.7% increases, all P < 0.001). However, the inspiratory right middle lobe volume remained similar in the three positions (all P > 0.15); the expiratory right middle lobe volume was significantly lower in the standing/sitting positions (16.3/14.1% decrease) than in the supine position (both P < 0.0001). The Pearson’s correlation coefficients (r) used to compare the total lung volumes on inspiratory CT in the supine/standing/sitting positions and the total lung capacity on PFT were 0.83/0.93/0.95, respectively. The r values comparing the total lung volumes on expiratory CT in the supine/standing/sitting positions and the functional residual capacity on PFT were 0.83/0.85/0.82, respectively. The r values comparing the total lung volume changes from expiration to inspiration on CT in the supine/standing/sitting positions and the inspiratory capacity on PFT were 0.53/0.62/0.65, respectively. The study results could impact preoperative CT volumetry of the lung in lung cancer patients (before lobectomy) for the prediction of postoperative residual pulmonary function, and could be used as the basis for elucidating undetermined pathological mechanisms. Furthermore, in addition to morphological evaluation of the chest, inspiratory and expiratory upright CT may be used as an alternative tool to predict lung volumes such as total lung capacity, functional residual capacity, and inspiratory capacity in situation in which PFT cannot be performed such as during an infectious disease pandemic, with relatively more accurate predictability compared with conventional supine CT.

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Section: Introductionmentioning

confidence: 99%

Comparison of inspiratory and expiratory lung and lobe volumes among supine, standing, and sitting positions using conventional and upright CT

Yamada

Chubachi

et al. 2020

Sci Rep

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“…It has been reported that the total lung capacity (TLC) measured by pulmonary function tests (PFTs) using spirometry in the standing position is higher than that obtained in the supine position [ 8 , 9 ]; however, neither the unilateral lung volume nor the volume of each lung lobe can be measured by PFT. On the other hand, CT volumetry can provide the volumes of the unilateral lung and each lobe of the lung [ 10 , 11 , 12 , 13 ] and has been reported to enable more accurate predictions of postoperative residual pulmonary function in patients with lung cancer than the segment-counting method, which is based solely on the number of remaining pulmonary segments [ 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Differences in Lung and Lobe Volumes between Supine and Standing Positions Scanned with Conventional and Newly Developed 320-Detector-Row Upright CT: Intra-Individual Comparison

Yamada

Yokoyama

et al. 2020

Respiration

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Background: No clinical studies to date have compared unilateral lung or lobe volumes between the supine and standing positions. Objectives: To compare lung/lobe volumes on computed tomography (CT) between these two positions and evaluate the correlation between the total lung volume and total lung capacity (TLC) on pulmonary function tests (PFTs). Methods: Thirty-two asymptomatic volunteers underwent both conventional CT (supine position) and upright CT (standing position), during deep inspiration breath-hold, and PFTs on the same day. We measured lung/lobe volumes on CT in each position. Paired t tests were used for statistical analysis. Results: The volumes of the total lung (10.

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“…The obesity itself causes a deterioration in lung function, with the functional residual capacity (FRC) and residual volume being particularly affected, as well as leading to a reduction in the FEV1 [56][57][58][59]. The reduction in FRC favours the increase in the BHR, one of the main characteristics of asthma [37].…”

Section: Discussionmentioning

confidence: 99%

Obesity Does Not Increase the Risk of Asthma Readmissions

Barcala

Nieto‐Fontarigo

Lourido-Cebreiro

et al. 2020

JCM

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The relationship between obesity and asthma exacerbations is still under debate. The aim of our work is to analyse the relationship between obesity and hospital re-admissions in asthmatics. A review was retrospectively performed on all hospital admissions of adult patients due to asthma exacerbation occurring in our hospital for 11 years. All those cases with asthma as the first diagnosis in the discharge report were included, or those with asthma as the second diagnosis provided when the first diagnosis was respiratory infection or respiratory failure. Only the first hospital admission of each patient was included in this study. The Odds Ratios of a higher incidence of early/late readmissions due to asthma exacerbation were calculated using a binary logistic regression, using the body mass index (BMI) as independent variable, adjusted for all the variables included in the study. The study included 809 patients with a mean age of 55.6 years, and 65.2% were female. The majority (71.4%) were obese or overweight. No significant relationship was observed in the univariate or multivariate analyses between overweight or obesity and the early or late hospital readmissions due to asthma. Therefore, obesity does not seem to be a determining factor in the risk of asthma exacerbations.

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Factores que afectan a la función pulmonar: una revisión bibliográfica

Cited by 38 publications

References 67 publications

Comparison of inspiratory and expiratory lung and lobe volumes among supine, standing, and sitting positions using conventional and upright CT

Comparison of inspiratory and expiratory lung and lobe volumes among supine, standing, and sitting positions using conventional and upright CT

Differences in Lung and Lobe Volumes between Supine and Standing Positions Scanned with Conventional and Newly Developed 320-Detector-Row Upright CT: Intra-Individual Comparison

Obesity Does Not Increase the Risk of Asthma Readmissions

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