scholarly journals Quantitative Assessment the Longitudinal Changes of Pulmonary Vascular Counts in Chronic Obstructive Pulmonary Disease

2021 ◽  
Author(s):  
Sang Won Park ◽  
Myoung-Nam Lim ◽  
Woo Jin Kim ◽  
So Hyeon Bak
Keyword(s):  
Computed Tomography ◽  
Chronic Obstructive Pulmonary Disease ◽  
Pulmonary Function ◽  
Pulmonary Disease ◽  
Chronic Obstructive ◽  
Obstructive Pulmonary Disease ◽  
Longitudinal Changes ◽  
Severe Emphysema ◽  
Copd Patients

Abstract BackgroundChest computed tomography(CT) is a widely used method to assess morphological and dynamic abnormalities in chronic obstructive pulmonary disease (COPD). The small pulmonary vascular cross-section (CSA), quantitatively extracted from volumetric CT, is a reliable indicator for predicting pulmonary vascular changes. CSA is associated with the severity of symptoms, pulmonary function tests (PFT) and emphysema and in COPD patients the severity increases over time. However, there are few studies of changes in vascular during longitudinal follow-up in COPD patients. We analyzed the correlation longitudinal changes in pulmonary vascular parameters with clinical parameters in COPD patients.Materials and MethodsA total of 288 subjects with COPD were investigated during follow up period up to 6 years. CT images were classified into five subtypes from normal to severe emphysema according to percentage of low-attenuation areas less than -950 and -856 Hounsfield units (HU) on inspiratory and expiratory CT (LAA-950, LAA-856exp). Total number of vessels (Ntotal) and total number of vessels with area less than 5 mm2 (N<5mm) per 1 cm2 of lung surface area (LSA) were measured at 6 mm from the pleural surface.ResultsNtotal/LSA and N<5mm/LSA changed from 1.16±0.27 to 0.87±0.2 and from 1.02±0.22 to 0.78±0.22, respectively, during Global Initiative for Chronic Obstructive Lung Disease (GOLD) stage progression. Both parameters changed from normal to severe emphysema according to CT subtype from 1.39±0.21 to 0.74±0.17 and from 1.18±0.19 to 0.67±0.15, respectively. LAA-950 and LAA-856exp were negatively correlated with Ntotal/LSA (r=-0.738, -0.529) and N<5mm /LSA (r=-0.729, -0.497). On the other hand, pulmonary function test (PFT) results showed a weak correlation with Ntotal/LSA and N<5mm/LSA (r=0.205, 0.210). The depth in CT subtypes for longitudinal change both Ntotal/LSA and N<5mm/LSA was (-0.032, -0.023) and (-0.027) in normal and SAD, respectively.ConclusionsQuantitative computed tomography features faithfully reflected pulmonary vessel alterations, showing in particular that pulmonary vascular alteration started.Trial registrationWe obtained the written informed consent from all participants in this study and the approval for all processes by our institution Institutional Review Board.

scholarly journals Computed tomography-derived area and density of pectoralis muscle associated disease severity and longitudinal changes in chronic obstructive pulmonary disease: a case control study

2019 ◽  
Vol 20 (1) ◽  
Author(s):  
So Hyeon Bak ◽  
Sung Ok Kwon ◽  
Seon-Sook Han ◽  
Woo Jin Kim
Keyword(s):  
Computed Tomography ◽  
Chronic Obstructive Pulmonary Disease ◽  
Lung Function ◽  
Pulmonary Function ◽  
Pulmonary Disease ◽  
Disease Severity ◽  
Chronic Obstructive ◽  
Pectoralis Muscle ◽  
Obstructive Pulmonary Disease ◽  
Longitudinal Changes

Abstract Background Muscle wasting is associated with prognosis in patients with chronic obstructive pulmonary disease (COPD). The cross-sectional area of skeletal muscles on computed tomography (CT) could serve as a method to evaluate body composition. The present study aimed to determine the ability of CT-derived pectoralis muscle area (PMA) and pectoralis muscle density (PMD) to determine the severity of COPD and change in longitudinal pulmonary function in patients with COPD. Methods A total of 293 participants were enrolled in this study, a whom 222 had undergone at least two spirometry measurements within 3 years after baseline data acquisition. PMA and PMD were measured from a single axial slice of chest CT above the aortic arch at baseline. The emphysema index and bronchial wall thickness were quantitatively assessed in all scans. The generalized linear model was used to determine the correlation between PMA and PMD measurements and pulmonary function. Results PMA and PMD were significantly associated with baseline lung function and the severity of emphysema (P < 0.05). Patients with the lowest PMA and PMD exhibited significantly more severe airflow obstruction (β = − 0.06; 95% confidence interval: − 0.09 to − 0.03]. PMA was statistically associated with COPD assessment test (CAT) score (P = 0.033). However, PMD did not exhibit statistically significant correlation with either CAT scores or modified Medical Research Council scores (P > 0.05). Furthermore, neither PMA nor PMD were associated with changes in forced expiratory volume in 1 s over a 3-year periods. Conclusions CT-derived features of the pectoralis muscle may be helpful in predicting disease severity in patients with COPD, but are not necessarily associated with longitudinal changes in lung function.

scholarly journals Multi detector computed tomography evaluation in chronic obstructive pulmonary disease and correlation with severity of disease

2019 ◽  
Vol 7 (8) ◽  
pp. 3116
Author(s):  
Ajay Kumar ◽  
Ankita Rohira ◽  
Ashish Vijay ◽  
Abhay Sharma
Keyword(s):  
Computed Tomography ◽  
Chronic Obstructive Pulmonary Disease ◽  
Pulmonary Function ◽  
Pulmonary Disease ◽  
Pulmonary Function Tests ◽  
Chronic Obstructive ◽  
Obstructive Pulmonary Disease ◽  
Function Tests ◽  
Invaluable Tool ◽  
Multi Detector Computed Tomography

Background: Multi Detector computed tomography (MDCT) may effectively characterize and quantify the extent of emphysema and the air trapping related to the small airway’s disease. Here we highlight the computed-tomography findings of Chronic Obstructive Pulmonary Disease (COPD) and correlation with the Spirometrics values.Methods: The study group included the total of 100 adult patients of either sex with a clinical suspicion of COPD and those who undergone MDCT of thorax. Lung function of the patients with the COPD stages mild to very severe was evaluated by both the MDCT and Spirometrics Pulmonary Function Tests (PFTs). The scanning was done at maximum end inspiration and maximum end expiration.Results: There was a preponderance of male patients with highly significant correlation between values of mean lung density and low attenuation values (p<0.000I). MDCT correlated well with those obtained from spirometric Pulmonary Function Tests in the patients with COPD and that the correlation at expiration was superior to that at inspiration.Conclusions: The study concludes that Multi-detector computed tomography is the invaluable tool in defining and quantifying COPD and the characterization of emphysematous changes.

scholarly journals Chronic obstructive pulmonary disease patients electronic register analysis: the effectiveness of patient’s dynamic follow up and evaluation of treatment program

2019 ◽  
Vol 91 (1) ◽  
pp. 78-83
Author(s):  
V Ju Mishlanov ◽  
I V Shubin ◽  
K N Bekker ◽  
A V Katkova ◽  
E P Koshurnikova
Keyword(s):  
Chronic Obstructive Pulmonary Disease ◽  
Pulmonary Disease ◽  
Pneumococcal Infection ◽  
Chronic Obstructive ◽  
Inhaled Corticosteroid ◽  
Obstructive Pulmonary Disease ◽  
Copd Patients ◽  
Register Analysis ◽  
Long Acting

In the last few years new informatics methods were implemented in medicine and allowed to create big data including individual clinical markers of every patient. It is suggested that clinical electronic patient’s register analysis will present accurate information about different treatment programs effectiveness, including those whose effectiveness is not still proved today. The aim of the study. To estimate the effectiveness of clinical patients register implementation as well as to analyze different treatment and prophylactic programs on chronic obstructive pulmonary disease (COPD) patients’ structure. Materials and methods. The COPD patient’s register consists of 4257 cases. Spirometrical data were evaluated. Dynamic follow was performed on 567 COPD patients. Bronchodilator’s therapy was estimated as well as combined inhaled corticosteroid/ long acting β2-agonist medications and vaccination against pneumococcal infection. Results. Computer program “Electronic polyclinic” proposed by the authors of this article is effective in precision of diagnostic decision making in cohort study, dynamic follow up after clinical symptoms, evaluation of instrumental and laboratory results, prophylactics and treatment effectiveness, “clinical patients registers” automatic formation using syndrome or nosological principle, checking the COPD patients in the group of those with bronchial obstruction. Conclusion. Positive effects of long-acting bronchodilator treatment on COPD exacerbation decreasing and more expressed effect of inhaled corticosteroid/ long acting β2-agonists were confirmed. More interesting result was influence of vaccination against pneumococcal infection PCV13 (polyvalent conjugated vaccine) on exacerbation frequency and dyspnea severity.

scholarly journals Correlates of variability in endurance shuttle walk test time in patients with chronic obstructive pulmonary disease

PLoS ONE ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. e0249786
Author(s):  
Anouk A. F. Stoffels ◽  
Bram van den Borst ◽  
Jeannette B. Peters ◽  
Mariska P. M. Klaassen ◽  
Hanneke A. C. van Helvoort ◽  
...  
Keyword(s):  
Physical Activity ◽  
Chronic Obstructive Pulmonary Disease ◽  
Pulmonary Function ◽  
Pulmonary Disease ◽  
Performance Measures ◽  
Exercise Tolerance ◽  
Chronic Obstructive ◽  
Walk Test ◽  
Obstructive Pulmonary Disease ◽  
Copd Patients

Background The endurance shuttle walk test (ESWT) is used to evaluate exercise tolerance in patients with chronic obstructive pulmonary disease (COPD). The recommended pre-intervention tolerated duration (Tlim) is between 3–8 minutes for optimal interpretation of treatment effects. However, this window may be exceeded and factors determining ESWT Tlim are not completely understood. Therefore, we aimed to determine whether pulmonary function, physical and incremental shuttle walk test (ISWT) performance measures are associated with ESWT Tlim in COPD patients. Methods Assessment data from patients eligible for pulmonary rehabilitation was retrospectively analyzed. Inclusion criteria were: diagnosis of COPD and complete data availability regarding ESWT and ISWT. Patients performed an ESWT at 85% of ISWT speed and were divided into three groups (ESWT Tlim: <3 minutes, 3–8 minutes, >8 minutes). Subject characteristics, severity of complaints, pulmonary function, physical capacity and activity, exercise tolerance and quadriceps muscle strength were evaluated. Results 245 COPD patients (FEV1 38 (29–52)% predicted) were included. Median ESWT Tlim was 6.0 (3.7–10.3) minutes, 41 (17%) patients walked <3 minutes and 80 (33%) patients walked >8 minutes. Body mass index, maximal oxygen consumption, Tlim on constant work rate cycle test, physical activity level, maximal ISWT speed, dyspnoea Borg score at rest and increase of leg fatigue Borg score during ISWT independently predicted Tlim in multivariate regression analysis (R2 = 0.297, p<0.001). Conclusion This study reported a large variability in ESWT Tlim in COPD patients. Secondly, these results demonstrated that next to maximal ISWT speed, other ISWT performance measures as well as clinical measures of pulmonary function, physical capacity and physical activity were independent determinants of ESWT Tlim. Nevertheless, as these determinants only explained ~30% of the variability, future studies are needed to establish whether additional factors can be used to better adjust individual ESWT pace in order to reduce ESWT Tlim variability.

Impact of Body Mass Index Change on the Prognosis of Chronic Obstructive Pulmonary Disease

Respiration ◽  
2020 ◽  
pp. 1-11
Author(s):  
Eun Kyung Kim ◽  
Dave Singh ◽  
Joo Hun Park ◽  
Yong Bum Park ◽  
Seung-Il Kim ◽  
...  
Keyword(s):  
Chronic Obstructive Pulmonary Disease ◽  
Body Mass Index ◽  
Pulmonary Disease ◽  
Body Mass ◽  
Longitudinal Change ◽  
Chronic Obstructive ◽  
Outpatient Basis ◽  
Obstructive Pulmonary Disease ◽  
Copd Patients

<b><i>Background:</i></b> Low body mass index (BMI) is an important prognostic factor in chronic obstructive pulmonary disease (COPD). However, the prognostic value of longitudinal BMI change in COPD has not been well studied. <b><i>Objective:</i></b> We aimed to evaluate the association between longitudinal change of BMI and prognosis of COPD in Korean COPD cohort. <b><i>Methods:</i></b> This study was conducted in a prospective Korean Obstructive Lung Disease (KOLD) cohort where COPD patients were recruited on an outpatient basis at 17 hospitals in South Korea. Annual BMI was measured over a period of 3 years or more. All patients were categorized into underweight (UW), normal weight (NW), and overweight (OW) groups by BMI. Clinical characteristics and outcomes including exacerbation and mortality were compared based on initial BMI grade and longitudinal change of BMI. <b><i>Results:</i></b> This analysis included 537 COPD patients (mean age = 67.4 ± 7.9 years, male = 97.0%, mean BMI = 23.0 ± 3.1) of KOLD cohort. The proportions of UW, NW, and OW groups were 6.9% (<i>n</i> = 37), 68.9% (<i>n</i> = 370), and 24.2% (<i>n</i> = 130) respectively. The UW group showed lower forced expiratory volume in 1 s (FEV<sub>1</sub>) (<i>p</i> &#x3c; 0.001), shorter 6-minute walk distance (<i>p</i> &#x3c; 0.001), higher modified Medical Research Council score (<i>p</i> = 0.002), higher St. George Respiratory Questionnaire score (<i>p</i> &#x3c; 0.001), higher emphysema index (<i>p</i> &#x3c; 0.001) and air-trapping index (<i>p</i> &#x3c; 0.001), and more frequent (<i>p</i> &#x3c; 0.001) and severe exacerbations (<i>p</i> = 0.003). Multivariable analyses demonstrated that decrease of BMI (hazard ratio [HR] = 0.786, <i>p</i> = 0.038) and the descent of BMI group (HR = 3.167, <i>p</i> = 0.016) at 3-year follow-up along with age, initial BMI, post-bronchodilator FEV<sub>1</sub>, and severe exacerbations were significantly associated with mortality. <b><i>Conclusions:</i></b> This study demonstrated that BMI decrease during follow-up was independently associated with exacerbation and higher mortality of COPD, suggesting BMI reduction in COPD should be carefully managed.

scholarly journals Impact of tobacco-related chronic obstructive pulmonary disease on developmental trajectories of comorbidities in the Taiwan population

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Te-Wei Ho ◽  
Yi-Ju Tsai ◽  
Chun-Ta Huang ◽  
Angela Shin-Yu Lien ◽  
Feipei Lai
Keyword(s):  
Chronic Obstructive Pulmonary Disease ◽  
Pulmonary Disease ◽  
Developmental Trajectories ◽  
Chronic Obstructive ◽  
Control Groups ◽  
Obstructive Pulmonary Disease ◽  
Copd Patients ◽  
And Control ◽  
The Impact

AbstractComorbidities adversely affect the quality of life and survival of patients with chronic obstructive pulmonary disease (COPD), and timely identification and management of comorbidities are important in caring for COPD patients. This study aimed to investigate the impact of COPD on long-term developmental trajectories of its comorbidities. From 2010 to 2013, all spirometry-confirmed COPD patients with a 5-year follow-up period were identified as the cases. The prevalence of comorbidities and their trajectories in COPD cases were obtained and compared with those in non-COPD controls matched for age, sex, smoking status and Charlson comorbidity index (CCI). Over the study period, a total of 682 patients, 341 each in COPD and control groups were included, with a mean age of 69.1 years and 89% male. The baseline mean CCI was 1.9 for both groups of patients and significantly increased to 3.4 and 2.7 in COPD and control groups after 5 years, respectively (both P < 0.001). Through the 5-year follow-up, a significant increase in the prevalence of all comorbidities of interest was observed in the COPD cohort and the incidence was remarkably higher for hypertension [incidence rate ratio (IRR) 1.495; 95% confidence interval (CI) 1.017–2.198], malignancy (IRR 2.397; 95% CI 1.408–4.081), diabetes mellitus (IRR 2.927; 95% CI 1.612–5.318), heart failure (IRR 2.531; 95% CI 1.502–4.265) and peptic ulcer disease (IRR 2.073; 95% CI 1.176–3.654) as compared to the non-COPD matched controls. In conclusion, our findings suggest that the presence of COPD may be considered a pathogenic factor involved in the development of certain comorbidities.

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