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Lin X, Zhou T, Ni J, Li J, Guan Y, Jiang X, Zhou X, Xia Y, Xu F, Hu H, Dong Q, Liu S, Fan L. CT-based whole lung radiomics nomogram: a tool for identifying the risk of cardiovascular disease in patients with chronic obstructive pulmonary disease. Eur Radiol 2024; 34:4852-4863. [PMID: 38216755 DOI: 10.1007/s00330-023-10502-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 09/22/2023] [Accepted: 10/31/2023] [Indexed: 01/14/2024]
Abstract
OBJECTIVES To evaluate the value of CT-based whole lung radiomics nomogram for identifying the risk of cardiovascular disease (CVD) in patients with chronic obstructive pulmonary disease (COPD). MATERIALS AND METHODS A total of 974 patients with COPD were divided into a training cohort (n = 402), an internal validation cohort (n = 172), and an external validation cohort (n = 400) from three hospitals. Clinical data and CT findings were analyzed. Radiomics features of whole lung were extracted from the non-contrast chest CT images. A radiomics signature was constructed with algorithms. Combined with the radiomics score and independent clinical factors, multivariate logistic regression analysis was used to establish a radiomics nomogram. ROC curve was used to analyze the prediction performance of the model. RESULTS Age, weight, and GOLD were the independent clinical factors. A total of 1218 features were extracted and reduced to 15 features to build the radiomics signature. In the training cohort, the combined model (area under the curve [AUC], 0.731) showed better discrimination capability (p < 0.001) than the clinical factors model (AUC, 0.605). In the internal validation cohort, the combined model (AUC, 0.727) performed better (p = 0.032) than the clinical factors model (AUC, 0.629). In the external validation cohort, the combined model (AUC, 0.725) performed better (p < 0.001) than the clinical factors model (AUC, 0.690). Decision curve analysis demonstrated the radiomics nomogram outperformed the clinical factors model. CONCLUSION The CT-based whole lung radiomics nomogram has the potential to identify the risk of CVD in patients with COPD. CLINICAL RELEVANCE STATEMENT This study helps to identify cardiovascular disease risk in patients with chronic obstructive pulmonary disease on chest CT scans. KEY POINTS • To investigate the value of CT-based whole lung radiomics features in identifying the risk of cardiovascular disease in chronic obstructive pulmonary disease patients. • The radiomics nomogram showed better performance than the clinical factors model to identify the risk of cardiovascular disease in patients with chronic obstructive pulmonary disease. • The radiomics nomogram demonstrated excellent performance in the training, internal validation, and external validation cohort (AUC, 0.731; AUC, 0.727; AUC, 0.725).
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Affiliation(s)
- XiaoQing Lin
- Department of Radiology, Second Affiliated Hospital of Naval Medical University, Shanghai, 200003, China
- College of Health Sciences and Engineering, University of Shanghai for Science and Technology, Shanghai, 200003, China
| | - TaoHu Zhou
- Department of Radiology, Second Affiliated Hospital of Naval Medical University, Shanghai, 200003, China
- School of Medical Imaging, Weifang Medical University, Weifang, Shandong, China
| | - Jiong Ni
- Department of Radiology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Jie Li
- Department of Radiology, Second Affiliated Hospital of Naval Medical University, Shanghai, 200003, China
- College of Health Sciences and Engineering, University of Shanghai for Science and Technology, Shanghai, 200003, China
| | - Yu Guan
- Department of Radiology, Second Affiliated Hospital of Naval Medical University, Shanghai, 200003, China
| | - Xin'ang Jiang
- Department of Radiology, Second Affiliated Hospital of Naval Medical University, Shanghai, 200003, China
| | - Xiuxiu Zhou
- Department of Radiology, Second Affiliated Hospital of Naval Medical University, Shanghai, 200003, China
| | - Yi Xia
- Department of Radiology, Second Affiliated Hospital of Naval Medical University, Shanghai, 200003, China
| | - Fangyi Xu
- Department of Radiology, Zhejiang University School of Medicine Sir Run Run Shaw Hospital, Zhejiang, China
| | - Hongjie Hu
- Department of Radiology, Zhejiang University School of Medicine Sir Run Run Shaw Hospital, Zhejiang, China
| | - Qian Dong
- Department of Radiology, University of Michigan Taubman Center, Ann Arbor, MI, USA
| | - Shiyuan Liu
- Department of Radiology, Second Affiliated Hospital of Naval Medical University, Shanghai, 200003, China
| | - Li Fan
- Department of Radiology, Second Affiliated Hospital of Naval Medical University, Shanghai, 200003, China.
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Cannon MF, Goldfarb DG, Zeig-Owens RA, Hall CB, Choi J, Cohen HW, Prezant DJ, Weiden MD. Normal Lung Function and Mortality in World Trade Center Responders and National Health and Nutrition Examination Survey III Participants. Am J Respir Crit Care Med 2024; 209:1229-1237. [PMID: 38163381 DOI: 10.1164/rccm.202309-1654oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 12/22/2023] [Indexed: 01/03/2024] Open
Abstract
Rationale: Low FEV1 is a biomarker of increased mortality. The association of normal lung function and mortality is not well described. Objectives: To evaluate the FEV1-mortality association among participants with normal lung function. Methods: A total of 10,999 Fire Department of the City of New York (FDNY) responders and 10,901 Third National Health and Nutrition Examination Survey (NHANES III) participants, aged 18-65 years with FEV1 ⩾80% predicted, were analyzed, with FEV1 percent predicted calculated using Global Lung Function Initiative Global race-neutral reference equations. Mortality data were obtained from linkages to the National Death Index. Cox proportional hazards models estimated the association between FEV1 and all-cause mortality, controlling for age, sex, race/ethnicity, smoking history, and, for FDNY, work assignment. Cohorts were followed for a maximum of 20.3 years. Measurements and Main Results: We observed 504 deaths (4.6%) of 10,999 for FDNY and 1,237 deaths (9.4% [weighted]) of 10,901 for NHANES III. Relative to FEV1 ⩾120% predicted, mortality was significantly higher for FEV1 100-109%, 90-99%, and 80-89% predicted in the FDNY cohort. In the NHANES III cohort, mortality was significantly higher for FEV1 90-99% and 80-89% predicted. Each 10% higher predicted FEV1 was associated with 15% (hazard ratio, 0.85; 95% confidence interval, 0.80-0.91) and 23% (hazard ratio, 0.77; 95% confidence interval, 0.71-0.84) lower mortality for FDNY and NHANES III, respectively. Conclusions: In both cohorts, higher FEV1 is associated with lower mortality, suggesting higher FEV1 is a biomarker of better health. These findings demonstrate that a single cross-sectional measurement of FEV1 is predictive of mortality over two decades, even when FEV1 is in the normal range.
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Affiliation(s)
- Madeline F Cannon
- Department of Medicine, Montefiore Medical Center, Bronx, New York
- Bureau of Health Services, Fire Department of the City of New York, Brooklyn, New York
| | - David G Goldfarb
- Department of Medicine, Montefiore Medical Center, Bronx, New York
- Bureau of Health Services, Fire Department of the City of New York, Brooklyn, New York
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York; and
| | - Rachel A Zeig-Owens
- Department of Medicine, Montefiore Medical Center, Bronx, New York
- Bureau of Health Services, Fire Department of the City of New York, Brooklyn, New York
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York; and
| | - Charles B Hall
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York; and
| | - Jaeun Choi
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York; and
| | - Hillel W Cohen
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York; and
| | - David J Prezant
- Department of Medicine, Montefiore Medical Center, Bronx, New York
- Bureau of Health Services, Fire Department of the City of New York, Brooklyn, New York
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York; and
| | - Michael D Weiden
- Bureau of Health Services, Fire Department of the City of New York, Brooklyn, New York
- New York University Grossman School of Medicine, New York, New York
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Whittaker H, Rothnie KJ, Quint JK. Cause-specific mortality in COPD subpopulations: a cohort study of 339 647 people in England. Thorax 2024; 79:202-208. [PMID: 37328279 DOI: 10.1136/thorax-2022-219320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 05/03/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Identifying correlates of cause-specific mortality in patients with chronic obstructive pulmonary disease (COPD) may aid the targeting of therapies to reduce mortality. We determined factors associated with causes of death in a primary care COPD population. METHODS Clinical Practice Research Datalink Aurum was linked to Hospital Episode Statistics and death certificate data. People with COPD alive between 1 January 2010 and 1 January 2020 were included. Patient characteristics were defined before the start of follow-up: (a) frequency and severity of exacerbations; (b) emphysema or chronic bronchitis; (c) Global Obstructive Lung Disease (GOLD) groups A-D; and (d) airflow limitation. We used Cox Proportional Hazards regression and competing risks to investigate the association between patient characteristics and risk of all-cause, COPD and cardiovascular (CV) mortality. RESULTS 339 647 people with COPD were included of which 97 882 died during follow-up (25.7% COPD related and 23.3% CV related). Airflow limitation, GOLD group, exacerbation frequency and severity, and COPD phenotype were associated with all-cause mortality. Exacerbations, both increased frequency and severity, were associated with COPD-related mortality (≥2 exacerbations vs none adjusted HR: 1.64, 1.57-1.71; 1 severe vs none adjusted HR: 2.17, 2.04-2.31, respectively). Patients in GOLD groups B-D had a higher risk of COPD and CV mortality compared with GOLD group A (GOLD group D vs group A, adjusted HR for COPD mortality: 4.57, 4.23-4.93 and adjusted HR for CV mortality: 1.53, 1.41-1.65). Increasing airflow limitation was also associated with both COPD and CV mortality (GOLD 4 vs 1, adjusted HR: 12.63, 11.82-13.51 and adjusted HR: 1.75, 1.60-1.91, respectively). CONCLUSION Poorer airflow limitation, worse functional status and exacerbations had substantial associations with risk of all-cause mortality. Differing results for CV and COPD-related mortality suggests interventions to prevent mortality may need to target particular characteristics or time points in the disease course.
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Affiliation(s)
- Hannah Whittaker
- School of Public Health and National Heart and Lung Institute, Imperial College London, London, UK
| | - Kieran J Rothnie
- Department of Epidemiology, Value Evidence and Outcomes, Global Medical R&D, GlaxoSmithKline Plc, Brentford, UK
| | - Jennifer K Quint
- School of Public Health and National Heart and Lung Institute, Imperial College London, London, UK
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Wu Z, Zhang H, Jiang Y, Li Z, Wang Y, Tian Y, Guo Z, Zheng Y, Li X, Tao L, Guo X. Association of Abnormal Lung Function and Its Subtypes With Arterial Stiffness: A Longitudinal Cohort Study. J Am Heart Assoc 2024; 13:e029929. [PMID: 38156450 PMCID: PMC10863795 DOI: 10.1161/jaha.123.029929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 11/16/2023] [Indexed: 12/30/2023]
Abstract
BACKGROUND Prior studies have reported the cross-sectional relationship between lung function and arterial stiffness, while the longitudinal association remains unclear to date. This study aimed to investigate whether abnormal lung function and its subtypes at baseline are associated with increased arterial stiffness using a cohort. METHODS AND RESULTS This was a secondary analysis extracting 2461 participants from Beijing Health Management Cohort as baseline and annually followed for development of arterial stiffness. Abnormal lung function was defined by forced expiratory volume in 1s <80% of the predicted value, forced vital capacity of the predicted value, or forced expiratory volume in 1s/forced vital capacity ratio <70%. Increased arterial stiffness was determined by brachial-ankle pulse wave velocity ≥1400 cm/s. Cox proportional hazards model was used to calculate the hazard ratio and population attributable fraction. The mean age was 42.8±8.1 years, and 444 (18.0%) cases developed increased arterial stiffness during a median follow-up of 3.0 years. The adjusted hazard ratio (95% CI) of arterial stiffness was 1.47 (95% CI, 1.10-1.96) for abnormal lung function, with a population attributable fraction of 3.9% (95% CI, 0.8-7.1). Of subtypes, only obstructive ventilatory dysfunction was significantly associated with arterial stiffness (adjusted hazard ratio, 2.06 [95% CI, 1.27-3.36]), not restricted ventilatory dysfunction (adjusted hazard ratio, 0.95 [95% CI, 0.54-1.65]). Consistent results were observed on multiple sensitivity analyses. CONCLUSIONS Our study indicated a longitudinal association of abnormal lung function with increased arterial stiffness using a large cohort, especially for the obstructive ventilatory dysfunction.
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Affiliation(s)
- Zhiyuan Wu
- Beijing Municipal Key Laboratory of Clinical Epidemiology, School of Public HealthCapital Medical UniversityBeijingChina
- Centre for Precision Health, School of Medical and Health SciencesEdith Cowan UniversityJoondalupAustralia
| | - Haiping Zhang
- Beijing Municipal Key Laboratory of Clinical Epidemiology, School of Public HealthCapital Medical UniversityBeijingChina
| | - Yue Jiang
- Beijing Municipal Key Laboratory of Clinical Epidemiology, School of Public HealthCapital Medical UniversityBeijingChina
| | - Zhiwei Li
- Beijing Municipal Key Laboratory of Clinical Epidemiology, School of Public HealthCapital Medical UniversityBeijingChina
| | - Yutao Wang
- Shanghai Fufan Information Technology Co.ShanghaiChina
| | - Yixing Tian
- Beijing Municipal Key Laboratory of Clinical Epidemiology, School of Public HealthCapital Medical UniversityBeijingChina
| | - Zheng Guo
- Centre for Precision Health, School of Medical and Health SciencesEdith Cowan UniversityJoondalupAustralia
| | - Yulu Zheng
- Centre for Precision Health, School of Medical and Health SciencesEdith Cowan UniversityJoondalupAustralia
| | - Xia Li
- Department of Mathematics and StatisticsLa Trobe UniversityMelbourneAustralia
| | - Lixin Tao
- Beijing Municipal Key Laboratory of Clinical Epidemiology, School of Public HealthCapital Medical UniversityBeijingChina
| | - Xiuhua Guo
- Beijing Municipal Key Laboratory of Clinical Epidemiology, School of Public HealthCapital Medical UniversityBeijingChina
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Huang K, Zheng Z, Li W, Niu H, Lei J, Dong F, Yang T, Wang C. Sociodemographic correlates with prevalence of comorbidities in patients with chronic obstructive pulmonary disease: a study from a Chinese National Survey. THE LANCET REGIONAL HEALTH. WESTERN PACIFIC 2024; 42:100937. [PMID: 38357399 PMCID: PMC10865049 DOI: 10.1016/j.lanwpc.2023.100937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/26/2023] [Accepted: 09/27/2023] [Indexed: 02/16/2024]
Abstract
Background An increase in the prevalence of comorbidities has been reported in patients with chronic obstructive pulmonary disease (COPD). However, contemporary estimates of the overall prevalence of the sociodemographic correlates of COPD comorbidities are scarce and inconsistent in China. This study aimed to investigate the prevalence of sociodemographic correlates of comorbidities in patients with COPD across China. Methods This was a cross-sectional study. We used data from the Enjoying Breathing Program between May 2020 and April 2022. Participants with COPD from 17 provinces (or equivalent) were included. Comorbidity clusters were stratified based on the number of comorbidities per person. Univariable and multivariable analyses were used to determine the sociodemographic associations of patients with COPD with specific clusters of comorbidities after adjusting for age, sex, and other prespecified covariates. Tetrachoric correlation analyses were performed to determine the associations between specific comorbidities. Findings A total of 3913 participants with COPD were included, of whom 1744 (44.7%) had at least one comorbidity; 25.4% had one comorbid disease, 12.9% had two, and 6.4% had three or more concurrent diseases. The most common comorbidities were hypertension (17.8%), asthma (9.9%), bronchiectasis (8.2%), diabetes (8.2%), and coronary artery disease (7.7%). In the logistic regression models adjusted for a broad set of factors, patients with COPD residing in the east region of China and having health insurance experienced a decreased likelihood of comorbidities (from OR = 0.70 [95% confidence interval [CI], 0.53-0.93] to OR = 0.50 [95% CI, 0.25-0.99]). However, patients over 80 years had increased risk (OR 1.43 [95% CI 1.01-2.03]), as did those in all Modified Medical Research Council (mMRC) grade categories (grade 1: OR = 1.30 [95% CI, 1.02-1.65]; grade 2: OR = 1.39 [95% CI, 1.07-1.8]; grade 3: OR = 1.67 [95% CI, 1.23-2.26]; and grade 4: OR = 1.81 [95% CI, 1.00-3.28]) and in Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2 classification (OR = 1.30 [95% CI, 1.03-1.65]) relative to their respective references. The associations observed in these subgroups were consistent regardless of the number of comorbidities per person. Tetrachoric correlations demonstrated negative associations in pairwise comparisons of the top five comorbidities, ranging from -0.03 to -0.31 (p < 0.001 in all groups). Interpretation In China, comorbidities are highly prevalent among patients with COPD, with older age, higher mMRC grade, and lung function decline being the major risk factors. Studies with larger sample sizes are required to elucidate the complex mechanisms underlying COPD comorbidities. Funding This study was funded by CAMS Innovation Fund for Medical Sciences (CIFMS) (2021-I2M-1-049 and 2022-I2M-C&T-B-107).
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Affiliation(s)
- Ke Huang
- National Center for Respiratory Medicine, State Key Laboratory of Respiratory Health and Multimorbidity, National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China
| | - Zhoude Zheng
- National Center for Respiratory Medicine, State Key Laboratory of Respiratory Health and Multimorbidity, National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China
- Peking University China-Japan Friendship School of Clinical Medicine, Beijing, China
| | - Wei Li
- National Center for Respiratory Medicine, State Key Laboratory of Respiratory Health and Multimorbidity, National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China
| | - Hongtao Niu
- National Center for Respiratory Medicine, State Key Laboratory of Respiratory Health and Multimorbidity, National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China
| | - Jieping Lei
- Data and Project Management Unit, Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, China
| | - Fen Dong
- Data and Project Management Unit, Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, China
| | - Ting Yang
- National Center for Respiratory Medicine, State Key Laboratory of Respiratory Health and Multimorbidity, National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China
| | - Chen Wang
- National Center for Respiratory Medicine, State Key Laboratory of Respiratory Health and Multimorbidity, National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Goldfarb DG, Hall CB, Choi J, Zeig-Owens R, Cohen HW, Cannon M, Prezant DJ, Weiden MD. Association of Lung Function Decline with All-Cause and Cancer-Cause Mortality after World Trade Center Dust Exposure. Ann Am Thorac Soc 2023; 20:1136-1143. [PMID: 36961515 PMCID: PMC10405606 DOI: 10.1513/annalsats.202212-1011oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 03/24/2023] [Indexed: 03/25/2023] Open
Abstract
Rationale: In numerous cohorts, lung function decline is associated with all-cause and cardiovascular-cause mortality, but the association between the decrease in forced expiratory volume in 1 second (FEV1) and cancer-cause mortality, particularly after occupational/environmental exposure(s), is unclear. Exposure to dust/smoke from the World Trade Center (WTC) disaster caused inflammation and lung injury in Fire Department of the City of New York rescue/recovery workers. In addition, prior research found that >10% of the cohort experienced greater than twice the age-related decrease in FEV1 (⩾64 ml/yr). Objectives: To evaluate the association of longitudinal lung function with all-cause and cancer-cause mortality after exposure to the WTC disaster. Methods: We conducted a prospective cohort study using longitudinal prebronchodilator FEV1 data for 12,264 WTC-exposed firefighters and emergency medical service providers. All-cause and cancer-cause mortality were ascertained using National Death Index data from September 12, 2001, through December 31, 2021. Joint longitudinal survival models evaluated the association of baseline FEV1 and change in FEV1 from baseline with all-cause and cancer-cause mortality adjusted for age, race/ethnicity, height, smoking, work assignment (firefighters vs. emergency medical service providers), and WTC exposure. Results: By December 31, 2021, 607 of the 12,264 individuals in the cohort (4.9%) had died (crude rate = 259.5 per 100,000 person-years), and 190 of 12,264 (1.5%) had died from cancer (crude rate = 81.2 per 100,000 person-years). Baseline FEV1 was ⩾80% predicted in 10,970 of the 12,264 (89.4%); final FEV1 was ⩾80% in 9,996 (81.5%). Lower FEV1 at baseline was associated with greater risk for all-cause mortality (hazard ratio [HR] per liter = 2.32; 95% confidence interval [95% CI] = 1.98-2.72) and cancer-cause mortality (HR per liter = 1.99; 95% CI = 1.49-2.66). Longitudinally, each 100-ml/yr decrease in FEV1 was associated with an 11% increase in all-cause mortality (HR = 1.11; 95% CI = 1.06-1.15) and a 7% increase in cancer-cause mortality (HR = 1.07; 95% CI = 1.00-1.15). Compared with FEV1 decrease <64 ml/yr, those with FEV1 decrease ⩾64 ml/yr had higher all-cause (HR = 2.91; 95% CI = 2.37-3.56) and cancer-cause mortality (HR = 2.68; 95% CI = 1.90-3.79). Conclusions: Baseline FEV1 and longitudinal FEV1 decrease are associated with increased risk of all-cause and cancer-cause mortality in a previously healthy occupational cohort, the majority of whom had normal lung function, after intense exposure to dust/smoke. Further investigation is needed to define pathways by which lung function impacts mortality after an irritant exposure.
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Affiliation(s)
- David G. Goldfarb
- Department of Medicine, Montefiore Medical Center, Bronx, New York
- Bureau of Health Services, Fire Department of the City of New York, Brooklyn, New York
| | - Charles B. Hall
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York; and
| | - Jaeun Choi
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York; and
| | - Rachel Zeig-Owens
- Department of Medicine, Montefiore Medical Center, Bronx, New York
- Bureau of Health Services, Fire Department of the City of New York, Brooklyn, New York
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York; and
| | - Hillel W. Cohen
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York; and
| | - Madeline Cannon
- Department of Medicine, Montefiore Medical Center, Bronx, New York
- Bureau of Health Services, Fire Department of the City of New York, Brooklyn, New York
| | - David J. Prezant
- Department of Medicine, Montefiore Medical Center, Bronx, New York
- Bureau of Health Services, Fire Department of the City of New York, Brooklyn, New York
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York; and
| | - Michael D. Weiden
- Bureau of Health Services, Fire Department of the City of New York, Brooklyn, New York
- Department of Medicine, New York University Grossman School of Medicine, New York, New York
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Gadhvi K, Kandeil M, Raveendran D, Choi J, Davies N, Nanchahal S, Wing O, Quint J, Whittaker H. Inhaled Corticosteroids and Risk of Cardiovascular Disease in Chronic Obstructive Pulmonary Disease: A Systematic Review and Meta-Regression. CHRONIC OBSTRUCTIVE PULMONARY DISEASES (MIAMI, FLA.) 2023; 10:317-327. [PMID: 37289196 PMCID: PMC10484493 DOI: 10.15326/jcopdf.2022.0386] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/07/2023] [Indexed: 06/09/2023]
Abstract
Background Previous studies have reported mixed associations between inhaled corticosteroids (ICSs) and cardiovascular disease (CVD) in people with chronic obstructive pulmonary disease (COPD). Using updated literature, we investigated the association between ICS-containing medications and CVD in COPD patients, stratified by study-related factors. Methods We searched MEDLINE and EMBASE for studies that reported effect estimates for the association between ICS-containing medications and the risk of CVD in COPD patients. CVD outcomes specifically included heart failure, myocardial infarction, and stroke-related events. We conducted a random-effects meta-analysis and a meta-regression to identify effect-modifying study-related factors. Results Fifteen studies met inclusion criteria and investigated the association between ICS-containing medications and the risk of CVD. Pooled results from our meta-analysis showed a significant association between ICS-containing medication and reduced risk of CVD (hazard ratio 0.87, 95% confidence intervals 0.78 to 0.97). Study follow-up time, non-ICS comparator, and exclusion of patients with previous CVD modified the association between ICS use and risk of CVD. Conclusions Overall, we found an association between ICS-containing medications and reduced risk of CVD in COPD patients. Results from the meta-regression suggest that subgroups of COPD patients may benefit from ICS use more than others and further work is needed to determine this.
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Affiliation(s)
- Krishna Gadhvi
- Faculty of Medicine, Imperial College London, London, United Kingdom
- *joint first authors
| | - Minnah Kandeil
- Faculty of Medicine, Imperial College London, London, United Kingdom
- *joint first authors
| | - Dinushan Raveendran
- Faculty of Medicine, Imperial College London, London, United Kingdom
- *joint first authors
| | - Jeewoo Choi
- Faculty of Medicine, Imperial College London, London, United Kingdom
- *joint first authors
| | - Nia Davies
- Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Sukanya Nanchahal
- Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Oliva Wing
- Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Jennifer Quint
- School of Public Health and the National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Hannah Whittaker
- School of Public Health and the National Heart and Lung Institute, Imperial College London, London, United Kingdom
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Chen SY, Huang CK, Wu CL, Peng HC, Yu CJ, Chien JY. Prognostic value of the post-exercise heart rate recovery and BHDE-index in chronic obstructive pulmonary disease. BMC Pulm Med 2023; 23:263. [PMID: 37461073 DOI: 10.1186/s12890-023-02557-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Accepted: 07/08/2023] [Indexed: 07/20/2023] Open
Abstract
BACKGROUND The BODE index, consisting of body mass index (B), airflow obstruction (O), dyspnea score (D), and exercise capacity (E), can predict outcomes in COPD. However, when spirometry was restricted to prevent cross-infection such as COVID-19 pandemic, a modified index would be needed. Because cardiovascular dysfunction is associated with poor clinical outcomes in COPD, we conducted a novel BHDE-index by replacing spirometry with post-exercise heart rate recovery (HRR, H) and evaluated its predictive performance in this observational study. METHODS From January 2019 to December 2019, enrolled patients were analyzed as a derivation cohort for the setup of the model. This model was verified in another group of patients generated between January 2020 and December 2020, as the validation cohort. The post exercise HRR was defined as the difference of heart rate immediately after and 1 min after test cessation. RESULTS A total of 447 patients with COPD were enrolled. Patients with abnormal HRR were older, with more severe airway obstruction, severe airway symptoms, faster resting heart rate, shorter 6-min walk distance and higher frequency of severe acute exacerbation in previous one year. The prediction performance of the BHDE-index for one-year severe COPD exacerbation was similar to that of the BODE-index in both the derivation and validation groups [area under the receiver operating characteristic curve (AUROC) 0.76 vs. 0.75, p = 0.369; AUROC 0.74 vs. 0.79, p = 0.05]. The prediction performance for 1 year mortality was also similar between BHDE-index and BODE-index in both cohorts [AUROC 0.80 vs. 0.77, p = 0.564; 0.76 vs. 0.70, p = 0.234]. Univariate and multivariate analyses also showed that the BHDE-index was an independent and important predictor of annual severe COPD exacerbation in the derivation and validation cohorts. CONCLUSIONS The BHDE-index is a good and easy-to-perform prediction model for the risk of severe acute exacerbation and 1-year mortality in COPD wherever spirometry results are unavailable.
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Affiliation(s)
- Shih-Yu Chen
- Department of Internal Medicine, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu City, Taiwan
- Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chun-Kai Huang
- Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
| | - Chia-Ling Wu
- Department of Integrated Diagnostic & Therapeutics, National Taiwan University Hospital, Taipei, Taiwan
| | - Hui-Chuan Peng
- Department of Nursing, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chong-Jen Yu
- Department of Internal Medicine, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu City, Taiwan
- Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
- Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Jung-Yien Chien
- Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan.
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9
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Raslan AS, Quint JK, Cook S. All-Cause, Cardiovascular and Respiratory Mortality in People with Type 2 Diabetes and Chronic Obstructive Pulmonary Disease (COPD) in England: A Cohort Study Using the Clinical Practice Research Datalink (CPRD). Int J Chron Obstruct Pulmon Dis 2023; 18:1207-1218. [PMID: 37332839 PMCID: PMC10276568 DOI: 10.2147/copd.s407085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 05/22/2023] [Indexed: 06/20/2023] Open
Abstract
Background Type 2 diabetes (T2D) and chronic obstructive pulmonary disease (COPD) are common non-communicable diseases. Both have an inflammatory nature and similar risk factors, and there is overlap and interaction between them. To date, there is a lack of research on outcomes in people that have both conditions. The aim of this study was to investigate whether the presence of COPD in people with T2D was associated with an increased risk of all-cause, respiratory-cause and cardiovascular-cause mortality. Methods A three-year cohort study (2017-19) was done using the Clinical Practice Research Datalink Aurum database. The study population was 121,563 people with T2D aged ≥40. The exposure was COPD status at baseline. Incident rates for all-cause, respiratory-cause and cardiovascular-cause mortality were calculated. Poisson models for each outcome were fitted to estimate rate ratios for COPD status adjusted for age, sex, Index of Multiple Deprivation, smoking status, body mass index, prior asthma and cardiovascular disease. Results COPD was present in 12.1% people with T2D. People with COPD had a higher all-cause mortality rate (448.7 persons per 1000 person years) compared with people without COPD (296.6 persons per 1000 person years). People with COPD also had substantially higher respiratory mortality incidence rates and moderately raised cardiovascular mortality rates. Fully adjusted Poisson models showed that people with COPD had a 1.23 (95% CI 1.21, 1.24) times higher rate of all-cause mortality as compared with those without COPD and a 3.03 (95% CI 2.89, 3.18) times higher rate of respiratory-cause mortality. There was no evidence of an association with cardiovascular mortality after adjusting for existing cardiovascular disease. Conclusion Co-morbid COPD in people with T2D was associated with increased mortality overall and particularly from respiratory causes. People with both COPD and T2D are a high-risk group who would benefit from particularly intensive management of both conditions.
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Affiliation(s)
- Abdul Sattar Raslan
- Department of Primary Care and Public Health, School of Public Health, Imperial College London, London, UK
| | - Jennifer K Quint
- Department of Primary Care and Public Health, School of Public Health, Imperial College London, London, UK
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Sarah Cook
- Department of Primary Care and Public Health, School of Public Health, Imperial College London, London, UK
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10
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Alter P, Lucke T, Watz H, Andreas S, Kahnert K, Trudzinski FC, Speicher T, Söhler S, Bals R, Waschki B, Welte T, Rabe KF, Vestbo J, Wouters EFM, Vogelmeier CF, Jörres RA. Cardiovascular predictors of mortality and exacerbations in patients with COPD. Sci Rep 2022; 12:21882. [PMID: 36536050 PMCID: PMC9763357 DOI: 10.1038/s41598-022-25938-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 12/07/2022] [Indexed: 12/23/2022] Open
Abstract
In chronic obstructive pulmonary disease (COPD), comorbidities and worse functional status predict worse outcomes, but how these predictors compare with regard to different outcomes is not well studied. We thus compared the role of cardiovascular comorbidities for mortality and exacerbations. Data from baseline and up to four follow-up visits of the COSYCONET cohort were used. Cox or Poisson regression was employed to determine the relationship of predictors to mortality or mean annual exacerbation rate, respectively. Predictors comprised major comorbidities (including cardiovascular disease), lung function (forced expiratory volume in 1 s [FEV1], diffusion capacity for carbon monoxide [TLCO]) and their changes over time, baseline symptoms, exacerbations, physical activity, and cardiovascular medication. Overall, 1817 patients were included. Chronic coronary artery disease (p = 0.005), hypertension (p = 0.044) and the annual decline in TLCO (p = 0.001), but not FEV1 decline, were predictors of mortality. In contrast, the annual decline of FEV1 (p = 0.019) but not that of TLCO or cardiovascular comorbidities were linked to annual exacerbation rate. In conclusion, the presence of chronic coronary artery disease and hypertension were predictors of increased mortality in COPD, but not of increased exacerbation risk. This emphasizes the need for broad diagnostic workup in COPD, including the assessment of cardiovascular comorbidity.Clinical Trials: NCT01245933.
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Affiliation(s)
- Peter Alter
- grid.10253.350000 0004 1936 9756Department of Medicine, Pulmonary and Critical Care Medicine, University of Marburg (UMR), Member of the German Center for Lung Research (DZL), Baldingerstrasse 1, 35033 Marburg, Germany
| | - Tanja Lucke
- grid.411095.80000 0004 0477 2585Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, University Hospital, LMU Munich, Comprehensive Pneumology Center Munich (CPC-M), Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Henrik Watz
- grid.414769.90000 0004 0493 3289Airway Research Center North (ARCN), Member of the German Center for Lung Research (DZL), Pulmonary Research Institute at LungenClinic Grosshansdorf, Grosshansdorf, Germany
| | - Stefan Andreas
- grid.411984.10000 0001 0482 5331LungClinic Immenhausen and Department of Cardiology and Pneumology, University Medical Center Göttingen, Member of the German Center for Lung Research (DZL), Göttingen, Germany
| | - Kathrin Kahnert
- grid.411095.80000 0004 0477 2585Department of Internal Medicine V, University Hospital, LMU Munich, Comprehensive Pneumology Center Munich (CPC-M), Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Franziska C. Trudzinski
- grid.7700.00000 0001 2190 4373Department of Pneumology and Critical Care Medicine, Thoraxklinik, University of Heidelberg, Translational Lung Research Center Heidelberg (TLRC-H), Member of the German Center for Lung Research (DZL), Heidelberg, Germany
| | - Tim Speicher
- grid.10253.350000 0004 1936 9756Department of Medicine, Pulmonary and Critical Care Medicine, University of Marburg (UMR), Member of the German Center for Lung Research (DZL), Baldingerstrasse 1, 35033 Marburg, Germany
| | - Sandra Söhler
- grid.10253.350000 0004 1936 9756Department of Medicine, Pulmonary and Critical Care Medicine, University of Marburg (UMR), Member of the German Center for Lung Research (DZL), Baldingerstrasse 1, 35033 Marburg, Germany
| | - Robert Bals
- grid.411937.9Department of Internal Medicine V - Pulmonology, Allergology, Intensive Care Medicine, Saarland University Hospital, Homburg, Germany
| | - Benjamin Waschki
- grid.414769.90000 0004 0493 3289Department of Pneumology, Hospital Itzehoe, Airway Research Center North (ARCN), Member of the German Center for Lung Research (DZL), LungenClinic Grosshansdorf, Grosshansdorf, Germany ,grid.13648.380000 0001 2180 3484Department of Cardiology, University Heart Center Hamburg, Hamburg, Germany
| | - Tobias Welte
- grid.452624.3Clinic for Pneumology, Hannover Medical School, Member of the German Center for Lung Research (DZL), Hannover, Germany
| | - Klaus F. Rabe
- grid.9764.c0000 0001 2153 9986LungenClinic Grosshansdorf and Department of Medicine, Airway Research Center North (ARCN), Member of the German Center for Lung Research (DZL), Christian-Albrechts University, Kiel, Kiel/Grosshansdorf, Germany
| | - Jørgen Vestbo
- grid.5379.80000000121662407Division of Infection, Immunity and Respiratory Medicine, University of Manchester, Manchester, UK
| | - Emiel F. M. Wouters
- grid.412966.e0000 0004 0480 1382Department of Respiratory Medicine, Maastricht University Medical Centre, Maastricht, The Netherlands ,grid.476478.e0000 0004 9342 5701Ludwig Boltzmann Institute for Lung Health, Vienna, Austria
| | - Claus F. Vogelmeier
- grid.10253.350000 0004 1936 9756Department of Medicine, Pulmonary and Critical Care Medicine, University of Marburg (UMR), Member of the German Center for Lung Research (DZL), Baldingerstrasse 1, 35033 Marburg, Germany
| | - Rudolf A. Jörres
- grid.411095.80000 0004 0477 2585Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, University Hospital, LMU Munich, Comprehensive Pneumology Center Munich (CPC-M), Member of the German Center for Lung Research (DZL), Munich, Germany
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11
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LIU JL, WANG JQ, WANG D, QIN Y, ZHANG YQ, XIANG QY. The interaction effect of grip strength and lung function (especially FVC) on cardiovascular diseases: a prospective cohort study in Jiangsu Province, China. J Geriatr Cardiol 2022; 19:651-659. [PMID: 36284679 PMCID: PMC9548053 DOI: 10.11909/j.issn.1671-5411.2022.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023] Open
Abstract
OBJECTIVE Lung function and grip strength (GS) are associated with cardiovascular disease (CVD), but whether these risk factors interact to affect CVD is unknown. This study aimed to explore the interactions between lung function and GS with major CVD (defined as fatal/non-fatal myocardial infarction, stroke, and heart failure) incidence. METHODS We conducted a prospective cohort study on the Chinese population in Jiangsu Province. Cox proportional hazards models were used to explore the associations between GS, lung function, and major CVD incidence. RESULTS A total of 5967 participants were included in our study; among them, 182 participants developed major CVD. Participants with low forced vital capacity (FVC) had a higher risk of major CVD (hazard ratio (HR) = 1.45; 95% confidence interval (CI): 1.05-2.01; P < 0.05) compared with normal FVC. The risk of major CVD incidence (HR = 0.54; 95% CI: 0.35-0.83; P < 0.01) was significantly lower in participants with high GS than in individuals with low GS. The interaction between FVC and GS for major CVD incidence (P = 0.006) was statistically significant. Compared with normal FVC participants with high GS, low FVC participants with low GS had the highest risk of major CVD incidence (HR = 2.50; 95% CI: 1.43-4.36; P < 0.01). CONCLUSION Among people with low FVC, the risk of major CVD is lower with high GS. Participants with low FVC and low GS have the highest risk of major CVD. Therefore, more attention should be paid to the incidence of major CVD in individuals with low FVC, especially those who have lower GS.
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Affiliation(s)
- Jia-Li LIU
- School of Public Health, Southeast University; Nanjing, Jiangsu Province, China
| | - Jia-Qi WANG
- School of Public Health, Southeast University; Nanjing, Jiangsu Province, China
| | - Dan WANG
- School of Public Health, Southeast University; Nanjing, Jiangsu Province, China
| | - Yu QIN
- Department of Chronic Non-communicable Disease Control, Jiangsu Province Center for Disease Control and Prevention; Nanjing, Jiangsu Province, China
| | - Yong-Qing ZHANG
- Department of Chronic Non-communicable Disease Control, Jiangsu Province Center for Disease Control and Prevention; Nanjing, Jiangsu Province, China
| | - Quan-Yong XIANG
- School of Public Health, Southeast University; Nanjing, Jiangsu Province, China
- Department of Chronic Non-communicable Disease Control, Jiangsu Province Center for Disease Control and Prevention; Nanjing, Jiangsu Province, China
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12
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Annual decline rate in FEV1s in community-dwelling older adults diagnosed with mild to moderate COPD. NPJ Prim Care Respir Med 2022; 32:30. [PMID: 36028513 PMCID: PMC9418326 DOI: 10.1038/s41533-022-00292-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 08/16/2022] [Indexed: 11/25/2022] Open
Abstract
Information about the decline rate in forced expiratory volume in 1 s (FEV1s) in older adults with COPD is scarce. A total of 4082 community-dwelling older adults from the population-based study Good Aging in Skåne were followed for 12 years and 143 participants developed COPD. The average FEV1s decline is estimated to be 66.3 mL/year, (95% CI [56.4; 76.3]) and 43.3 mL/year (1.7%/year, 95% CI [41.2; 45.5]) for COPD and non-COPD participants, respectively.
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13
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Effect of Noninvasive Positive Pressure Ventilation on Prognosis and Blood Gas Level in COPD Patients Complicated with Respiratory Failure. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:3089227. [PMID: 35966741 PMCID: PMC9374560 DOI: 10.1155/2022/3089227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 07/04/2022] [Indexed: 11/17/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) is a respiratory disease caused by chronic bronchitis, which seriously threatens the life safety of patients. Noninvasive positive pressure ventilation (NIPPV) has great advantages in its treatment. Here, we explore the effect of NIPPV on prognosis and blood gas level in COPD patients complicated with respiratory failure (RF). A case control study was retrospectively analyzed, where 36 COPD patients with RF were regarded as the regular group to carry on the routine treatment, and 42 patients were assigned to the research group to carry out the routine treatment plus NIPPV. The monofactorial analysis showed that the overall response rate, forced expiratory volume in 1 s (FEV1), forced vital capacity (FVC), and FEV1/FVC in the research group were higher than those in the regular group, while partial pressure of arterial carbondioxide (PaCO2), posttreatment endotracheal intubation (EI), length of stay (LOS), tumor necrosis factor (TNF-α), interleukin (IL)-6, IL-1β, Acute Physiology and Chronic Health Evaluation (APACHE) II score, and modified Medical Research Council (mMRC) scores in the research group were lower than those in the regular group. These results indicated that NIPPV can improve the curative effect of emergency medicine patients with RF, improve BG level and PF, reduce inflammation, and facilitate patient's recovery.
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14
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Whittaker H, Van Ganse E, Dalon F, Nolin M, Marrant-Micallef C, Pison C, Ryan DP, Deslee G, Quint JK, Belhassen M. Differences in severe exacerbations rates and healthcare utilisation in COPD populations in the UK and France. BMJ Open Respir Res 2022; 9:9/1/e001150. [PMID: 35944943 PMCID: PMC9367183 DOI: 10.1136/bmjresp-2021-001150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 07/31/2022] [Indexed: 11/15/2022] Open
Abstract
Introduction Chronic obstructive pulmonary disease (COPD) is a leading cause of mortality in Europe; however, it is important to understand how clinical practice patterns differ between countries and how this might relate to disease outcomes, to identify ways of improving local disease management. We aimed to describe and compare the management of patients with COPD in the UK and France between 2008 and 2017. Methods We used data from the Clinical Practice Research Datalink GOLD and Hospital Episode Statistics in the UK and the Echantillon Généraliste des Bénéficiaire in France to identify patients with COPD each year between 2008 and 2017. We compared patient characteristics, all-cause mortality and COPD exacerbations each year between 2008 and 2017 for patients in the UK and France separately. Health care utilisation and COPD exacerbations in 2017 were compared between France and the UK using t-tests and χ2 tests. Results Patients with COPD were similar in gender and comorbidities in both countries. Incidence of COPD exacerbations remained stable in the UK and France between 2007 and 2017. In 2017, the proportion of all-cause and COPD-related hospitalisations was greater in the UK than in France (43.9% vs 32.8% and 8.3% vs 4.9%, respectively; p<0.001) as was the proportion of patients visiting accident and emergency (A&E) (39.8% vs 16.2%, respectively; p<0.001). In addition, the mean length of stay in hospital for COPD-related causes was shorter in the UK than in France (6.2 days (SD 8.4) vs 10.5 days (SD 9.1), respectively; p<0.001). Discussion Overall, UK patients were more likely to go to A&E, be hospitalised for COPD-related causes and stay in hospital for fewer days after being admitted for COPD-related reasons compared with patients in France, illustrating a difference in health-seeking behaviours and access to healthcare.
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Affiliation(s)
- Hannah Whittaker
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Eric Van Ganse
- PELyon, Pharmaco Epidemiologie Lyon, Lyon, France.,Respiratory Medicine, Hospital Croix-Rousse, Lyon, France
| | | | - Maeva Nolin
- PELyon, Pharmaco Epidemiologie Lyon, Lyon, France
| | | | - Christophe Pison
- Clinique de Pneumologie, Centre Hospitalier Universitaire de Grenoble, Service de Pneumologie, Grenoble, France
| | - Dermot P Ryan
- Allergy and Respiratory Research Group, Centre for Population Health Sciences: GP Section, University of Edinburgh, Edinburgh, UK
| | - Gaetan Deslee
- Department of Respiratory Medicine, INSERM UMRS 903, University Hospital of Reims, Reims, France
| | - Jennifer K Quint
- National Heart and Lung Institute, Imperial College London, London, UK
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15
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Gregory A, Xu Z, Pratte K, Lee S, Liu C, Chase R, Yun J, Saferali A, Hersh CP, Bowler R, Silverman E, Castaldi PJ, Boueiz A. Clustering-based COPD subtypes have distinct longitudinal outcomes and multi-omics biomarkers. BMJ Open Respir Res 2022; 9:9/1/e001182. [PMID: 35999035 PMCID: PMC9403129 DOI: 10.1136/bmjresp-2021-001182] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 07/31/2022] [Indexed: 11/25/2022] Open
Abstract
Introduction Chronic obstructive pulmonary disease (COPD) can progress across several domains, complicating the identification of the determinants of disease progression. In our previous work, we applied k-means clustering to spirometric and chest radiological measures to identify four COPD-related subtypes: ‘relatively resistant smokers (RRS)’, ‘mild upper lobe-predominant emphysema (ULE)’, ‘airway-predominant disease (AD)’ and ‘severe emphysema (SE)’. In the current study, we examined the associations of these subtypes to longitudinal COPD-related health measures as well as blood transcriptomic and plasma proteomic biomarkers. Methods We included 8266 non-Hispanic white and African-American smokers from the COPDGene study. We used linear regression to investigate cluster associations to 5-year prospective changes in spirometric and radiological measures and to gene expression and protein levels. We used Cox-proportional hazard test to test for cluster associations to prospective exacerbations, comorbidities and mortality. Results The RRS, ULE, AD and SE clusters represented 39%, 15%, 26% and 20% of the studied cohort at baseline, respectively. The SE cluster had the greatest 5-year FEV1 (forced expiratory volume in 1 s) and emphysema progression, and the highest risks of exacerbations, cardiovascular disease and mortality. The AD cluster had the highest diabetes risk. After adjustments, only the SE cluster had an elevated respiratory mortality risk, while the ULE, AD and SE clusters had elevated all-cause mortality risks. These clusters also demonstrated differential protein and gene expression biomarker associations, mostly related to inflammatory and immune processes. Conclusion COPD k-means subtypes demonstrate varying rates of disease progression, prospective comorbidities, mortality and associations to transcriptomic and proteomic biomarkers. These findings emphasise the clinical and biological relevance of these subtypes, which call for more study for translation into clinical practice. Trail registration number NCT00608764.
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Affiliation(s)
- Andrew Gregory
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Zhonghui Xu
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Katherine Pratte
- Department of Biostatistics, National Jewish Health, Denver, Colorado, USA
| | - Sool Lee
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Congjian Liu
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Robert Chase
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Jeong Yun
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA.,Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Aabida Saferali
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Craig P Hersh
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA.,Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Russell Bowler
- Division of Pulmonary, Critical Care and Sleep Medicine, National Jewish Health, Denver, Colorado, USA
| | - Edwin Silverman
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA.,Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Peter J Castaldi
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA.,General Medicine and Primary Care, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Adel Boueiz
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA .,Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
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16
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Balkissoon R, Mkorombindo T. Journal Club: Impaired Ventilatory Efficiency and Exercise Intolerance in Former/Current Smokers With Dyspnea Disproportionate to Their Lung Function: Pathophysiological Insights Gained Through Cardiopulmonary Exercise Testing. CHRONIC OBSTRUCTIVE PULMONARY DISEASES (MIAMI, FLA.) 2022; 9:477-485. [PMID: 35905756 PMCID: PMC9448006 DOI: 10.15326/jcopdf.2022.0344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Affiliation(s)
| | - Takudzwa Mkorombindo
- Lung Health Center, Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Alabama, Birmingham, Alabama, United States
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17
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Izquierdo JL, Rodríguez JM, Almonacid C, Benavent M, Arroyo-Espliguero R, Agustí A. Real-life burden of hospitalizations due to COPD exacerbations in Spain. ERJ Open Res 2022; 8:00141-2022. [PMID: 35983537 PMCID: PMC9379352 DOI: 10.1183/23120541.00141-2022] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 06/06/2022] [Indexed: 11/05/2022] Open
Abstract
Patients with chronic obstructive pulmonary disease (COPD) often suffer episodes of exacerbation of symptoms (ECOPD) that may eventually require hospitalization due to several, often overlapping, causes. We aimed to analyse the characteristics of patients hospitalized because of ECOPD in a real-life setting using a big-data approach. The study population included all patients older than 40 years with a diagnosis of COPD (n=69.359; prevalence 3.72%) registered since January 1st, 2011, until March 1, 2020, in the database of the public healthcare service (SESCAM) of Castilla-La Mancha (Spain) (n=1.863.759 subjects). We used natural language processing (Savana Manager v3.0) to identify those who were hospitalized during this period for any cause, including ECOPD. During the study 26.453 COPD patients (38.1%) were hospitalized (at least once). Main diagnoses at discharge were respiratory infection (51%), heart failure (38%) or pneumonia (19%). ECOPD was the main diagnosis at discharge (or hospital death) in 8.331 of them (12.0% of the entire COPD population and 31.5% of those hospitalized). In-hospital ECOPD-related mortality rate was 3.1%. These patients were hospitalized 2.36 times per patient, with a mean hospital stay of 6.1 days. Heart failure (HF) was the most frequent comorbidity in patients hospitalized because of ECOPD (52.6%). This analysis shows that, in a real-life setting, ECOPD hospitalizations are prevalent, complex (particularly in relation to HF), repetitive and associated with significant in-hospital mortality.
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18
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Xue Z, Guo S, Liu X, Ma J, Zhu W, Zhou Y, Liu F, Luo J. Impact of COPD or Asthma on the Risk of Atrial Fibrillation: A Systematic Review and Meta-Analysis. Front Cardiovasc Med 2022; 9:872446. [PMID: 35479273 PMCID: PMC9035743 DOI: 10.3389/fcvm.2022.872446] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 03/21/2022] [Indexed: 11/29/2022] Open
Abstract
Background: Respiratory diseases related to chronic pulmonary ventilation dysfunction are mainly composed of chronic obstructive pulmonary disease (COPD) and asthma. Our meta-analysis aimed to illustrate the association of COPD or asthma with risk of atrial fibrillation (AF). Methods We systematically searched the databases of the PubMed, Embase, and Cochrane library until December 2021 for studies focusing on the relationship between COPD or asthma and AF risk. Due to the potential heterogeneity across studies, the random-effects model was used to pool the studies. Results Our meta-analysis included 14 studies. Based on the random-effects model, the pooled analysis showed that COPD (risk ratio[RR] = 1.74, 95% confidence interval [CI]: 1.70–1.79) and asthma (RR = 1.08, 95% CI: 1.04–1.12) were significantly associated with an increased risk of AF. The results did not change after each study was excluded. Conclusion Our current data suggested that COPD or asthma with associated with an increased risk of AF.
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Li A, Roveda JM, Powers LS, Quan SF. Obstructive sleep apnea predicts 10-year cardiovascular disease-related mortality in the Sleep Heart Health Study: a machine learning approach. J Clin Sleep Med 2022; 18:497-504. [PMID: 34437053 PMCID: PMC8805009 DOI: 10.5664/jcsm.9630] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 08/19/2021] [Accepted: 08/19/2021] [Indexed: 02/03/2023]
Abstract
STUDY OBJECTIVES Obstructive sleep apnea (OSA) is considered to be an important risk factor for the development of cardiovascular disease (CVD). This study aimed to develop and evaluate a machine learning approach with a set of features for assessing the 10-year CVD mortality risk of the OSA population. METHODS This study included 2,464 patients with OSA who met study inclusion criteria and were selected from the Sleep Heart Health Study. We evaluated the importance of potential features by mutual information. The top 9 features were selected to develop a random forest model. RESULTS We evaluated the model performance on a test set (n = 493) using the area under the receiver operating curve with 95% confidence interval and confusion matrix. A random forest model awarded the highest area under the receiver operating curve of 0.84 (95% confidence interval: 0.78-0.89). The specificity and sensitivity were 73.94% and 81.82%, respectively. Sixty-three years old was a threshold for increased risk of 10-year CVD mortality. Persons with severe OSA had higher risk than those with mild OSA. CONCLUSIONS This study demonstrated that a random forest model can provide a quick assessment of the risk of 10-year CVD mortality. Our model may be more informative for patients with OSA in determining their future CVD mortality risk. CITATION Li A, Roveda JM, Powers LS, Quan SF. Obstructive sleep apnea predicts 10-year cardiovascular disease-related mortality in the Sleep Heart Health Study: a machine learning approach. J Clin Sleep Med. 2022;18(2):497-504.
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Affiliation(s)
- Ao Li
- Department of Electrical and Computer Engineering, College of Engineering, University of Arizona, Tucson, Arizona
- The BIO5 Institute, University of Arizona, Tucson, Arizona
| | - Janet M. Roveda
- Department of Electrical and Computer Engineering, College of Engineering, University of Arizona, Tucson, Arizona
- The BIO5 Institute, University of Arizona, Tucson, Arizona
- Department of Biomedical Engineering, College of Engineering, University of Arizona, Tucson, Arizona
| | - Linda S. Powers
- Department of Electrical and Computer Engineering, College of Engineering, University of Arizona, Tucson, Arizona
- The BIO5 Institute, University of Arizona, Tucson, Arizona
- Department of Biomedical Engineering, College of Engineering, University of Arizona, Tucson, Arizona
| | - Stuart F. Quan
- Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
- Asthma and Airway Disease Research Center, College of Medicine, University of Arizona, Tucson, Arizona
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Whittaker HR, Kiddle SJ, Quint JK. Challenges and Pitfalls of Using Repeat Spirometry Recordings in Routine Primary Care Data to Measure FEV 1 Decline in a COPD Population. Pragmat Obs Res 2021; 12:119-130. [PMID: 34512071 PMCID: PMC8420778 DOI: 10.2147/por.s319965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 07/06/2021] [Indexed: 11/23/2022] Open
Abstract
Background Electronic healthcare records (EHR) are increasingly used in epidemiological studies but are often viewed as lacking quality compared to randomised control trials and prospective cohorts. Studies of patients with chronic obstructive pulmonary disease (COPD) often use the rate of forced expiratory volume in 1 second (FEV1) decline as an outcome; however, its definition and robustness in EHR have not been investigated. We aimed to investigate how the rate of FEV1 decline differs by the criteria used in an EHR database. Methods Clinical Practice Research Datalink and Hospital Episode Statistics were used. Patient populations were defined using 8 sets of criteria around repeated FEV1 measurements. At a minimum, patients had a diagnosis of COPD, were ≥35 years old, were current or ex-smokers, and had data recorded from 2004. FEV1 measurements recorded during follow-up were identified. Thereafter, eight populations were defined based on criteria around: i) the exclusion of patients or individual measurements with potential measurement error; ii) minimum number of FEV1 measurements; iii) minimum time interval between measurements; iv) specific timing of measurements; v) minimum follow-up time; and vi) the use of linked data. For each population, the rate of FEV1 decline was estimated using mixed linear regression. Results For 7/8 patient populations, rates of FEV1 decline (age and sex adjusted) were similar and ranged from −18.7mL/year (95% CI −19.2 to −18.2) to −16.5mL/year (95% CI −17.3 to −15.7). Rates of FEV1 decline in populations that excluded patients with potential measurement error ranged from −79.4mL/year (95% CI −80.7 to −78.2) to −46.8mL/year (95% CI −47.6 to −46.0). Conclusion FEV1 decline remained similar in a COPD population regardless of number of FEV1 measurements, time intervals between measurements, follow-up period, exclusion of specific FEV1 measurements, and linkage to HES. However, exclusion of individuals with questionable data led to selection bias and faster rates of decline.
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Affiliation(s)
| | - Steven J Kiddle
- MRC Biostatistics Unit, University of Cambridge, Cambridge, UK
| | - Jennifer K Quint
- National Heart and Lung Institute, Imperial College London, London, UK
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Hering T, Batra A, Mühlig S, Nowak D, Rüther T, Schwarzkopf L. [Potential Savings in Treatment Costs of COPD through Smoking Cessation: Modeling for DMP COPD in Germany - Scientific Action Group on Tobacco Cessation (WAT) e. V.]. Pneumologie 2021; 75:577-582. [PMID: 34182578 PMCID: PMC8352717 DOI: 10.1055/a-1479-0876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 04/09/2021] [Indexed: 11/24/2022]
Abstract
Based on real-life data for the stage distribution of COPD patients (GOLD) and the actual stage-related treatment costs in a large nationwide cohort study (COSYCONET) 1, the influence of the reduced smoking rate on treatment costs was determined for the scenario of a reduction in the smoking rate of 26 % in this patient group by 10 percentage points to 16 %. The assumption was made that with a reduced smoking rate, lower stages (I/II) will be more strongly represented, while higher and more cost-intensive stages (III/IV) will be proportionally reduced. The intervention to achieve tobacco abstinence was calculated for the rough model calculations with the typical costs of a guideline-compliant treatment by a behavioral therapy group cessation program and the parallel use of medication support 2 3. The result showed a potential reduction of case costs by 10.5 %, not including reduction in costs associated with treatment of comorbidities.
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Affiliation(s)
- Thomas Hering
- Wissenschaftlicher Aktionskreis Tabakentwöhnung (WAT) e. V., UKT – Universitäts-Klinik für Psychiatrie und Psychotherapie, Tübingen
| | - Anil Batra
- Wissenschaftlicher Aktionskreis Tabakentwöhnung (WAT) e. V., Sektion Suchtmedizin und Suchtforschung am Universitätsklinikum Tübingen
| | - Stephan Mühlig
- Wissenschaftlicher Aktionskreis Tabakentwöhnung (WAT) e. V., Technische Universität Chemnitz, Professur für Klinische Psychologie und Psychotherapie, Chemnitz
| | - Dennis Nowak
- LMU Klinikum, Institut und Poliklinik für Arbeits-, Sozial- und Umweltmedizin Campus Innenstadt, München, Mitglied, Comprehensive Pneumology Center (CPC) München, Deutsches Zentrum für Lungenforschung (DZL)
| | - Tobias Rüther
- Wissenschaftlicher Aktionskreis Tabakentwöhnung (WAT) e. V., LMU Klinikum Klinik für Psychiatrie und Psychotherapie, Spezialambulanz für Tabakabhängigkeit, München
| | - Larissa Schwarzkopf
- Therapie- & Versorgungsforschung, IFT Institut für Therapieforschung, München
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The Importance of Appropriate Diagnosis in the Practical Management of Chronic Obstructive Pulmonary Disease. Diagnostics (Basel) 2021; 11:diagnostics11040618. [PMID: 33808229 PMCID: PMC8067197 DOI: 10.3390/diagnostics11040618] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 03/25/2021] [Accepted: 03/28/2021] [Indexed: 12/25/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is projected to continue to contribute to an increase in the overall worldwide burden of disease until 2030. Therefore, an accurate assessment of the risk of airway obstruction in patients with COPD has become vitally important. Although the Global Initiative for Chronic Obstructive Lung Disease (GOLD), the American Thoracic Society (ATS) and European Respiratory Society (ERS), and the Japanese Respiratory Society (JRS) provide the criteria by which to diagnose COPD, many studies suggest that it is in fact underdiagnosed. Its prevalence increases, while the impact of COPD-related systemic comorbidities is also increasingly recognized in clinical aspects of COPD. Although a recent report suggests that spirometry should not be used to screen for airflow limitation in individuals without respiratory symptoms, the early detection of COPD in patients with no, or few, symptoms is an opportunity to provide appropriate management based on COPD guidelines. Clinical advances have been made in pharmacotherapeutic approaches to COPD. This article provides a current understanding of the importance of an appropriate diagnosis in the real-world management of COPD.
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Çolak Y. Cardiac disease from accelerated FEV 1 decline and acute exacerbations: time to rethink comorbidities in COPD. Eur Respir J 2021; 57:57/3/2004008. [PMID: 33664099 DOI: 10.1183/13993003.04008-2020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 11/10/2020] [Indexed: 11/05/2022]
Affiliation(s)
- Yunus Çolak
- Dept of Clinical Biochemistry, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark .,The Copenhagen General Population Study, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark.,Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Komalla V, Mehta M, Achi F, Dua K, Haghi M. The Potential for Phospholipids in the Treatment of Airway Inflammation: An Unexplored Solution. Curr Mol Pharmacol 2021; 14:333-349. [PMID: 33557743 DOI: 10.2174/1874467214666210208114439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 11/09/2020] [Accepted: 11/19/2020] [Indexed: 11/22/2022]
Abstract
Asthma, chronic obstructive pulmonary disease (COPD), and cystic fibrosis (CF) are major inflammatory respiratory diseases. Current mainstay therapy for asthma, and chronic obstructive pulmonary disease are corticosteroids, which have well-established side effect profiles. Phospholipids (PLs) are ubiquitous, diverse compounds with varying functions such as their structural role incell membrane, energy storage, and cell signaling.Recent advances in understanding PLs role as inflammatory mediators in the body as well as their widespread long-standing use as carrier molecules in drug delivery demonstrate the potential application of phospholipids in modulating inflammatory conditions. This review briefly explains the main mechanisms of inflammation in chronic respiratory diseases, currentanti-inflammatory treatments and areas of unmet need. The structural features, roles of endogenous and exogenous phospholipids, including their use as pharmaceutical excipients are reviewed. Current research on the immunomodulatory properties of PLs and their potentialapplication in inflammatory diseasesis the major section of this review. Considering the roles of PLs as inflammatory mediators and their safety profile established in pharmaceutical formulations, these small molecules demonstrate great potential as candidates in respiratory inflammation. Future studies need to focus on the immunomodulatory properties and the underlying mechanisms of phospholipids in respiratory inflammatory diseases.
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Affiliation(s)
- Varsha Komalla
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Chippendale NSW 2008. Australia
| | - Meenu Mehta
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Chippendale NSW 2008. Australia
| | - Fatima Achi
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Chippendale NSW 2008. Australia
| | - Kamal Dua
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Chippendale NSW 2008. Australia
| | - Mehra Haghi
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Chippendale NSW 2008. Australia
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