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Wienker J, Darwiche K, Rüsche N, Büscher E, Karpf-Wissel R, Winantea J, Özkan F, Westhölter D, Taube C, Kersting D, Hautzel H, Salhöfer L, Hosch R, Nensa F, Forsting M, Schaarschmidt BM, Zensen S, Theysohn J, Umutlu L, Haubold J, Opitz M. Body composition impacts outcome of bronchoscopic lung volume reduction in patients with severe emphysema: a fully automated CT-based analysis. Sci Rep 2024; 14:8718. [PMID: 38622275 PMCID: PMC11018765 DOI: 10.1038/s41598-024-58628-0] [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: 10/09/2023] [Accepted: 04/01/2024] [Indexed: 04/17/2024] Open
Abstract
Chronic Obstructive Pulmonary Disease (COPD) is characterized by progressive and irreversible airflow limitation, with individual body composition influencing disease severity. Severe emphysema worsens symptoms through hyperinflation, which can be relieved by bronchoscopic lung volume reduction (BLVR). To investigate how body composition, assessed through CT scans, impacts outcomes in emphysema patients undergoing BLVR. Fully automated CT-based body composition analysis (BCA) was performed in patients with end-stage emphysema receiving BLVR with valves. Post-interventional muscle and adipose tissues were quantified, body size-adjusted, and compared to baseline parameters. Between January 2015 and December 2022, 300 patients with severe emphysema underwent endobronchial valve treatment. Significant improvements were seen in outcome parameters, which were defined as changes in pulmonary function, physical performance, and quality of life (QoL) post-treatment. Muscle volume remained stable (1.632 vs. 1.635 for muscle bone adjusted ratio (BAR) at baseline and after 6 months respectively), while bone adjusted adipose tissue volumes, especially total and pericardial adipose tissue, showed significant increase (2.86 vs. 3.00 and 0.16 vs. 0.17, respectively). Moderate to strong correlations between bone adjusted muscle volume and weaker correlations between adipose tissue volumes and outcome parameters (pulmonary function, QoL and physical performance) were observed. Particularly after 6-month, bone adjusted muscle volume changes positively corresponded to improved outcomes (ΔForced expiratory volume in 1 s [FEV1], r = 0.440; ΔInspiratory vital capacity [IVC], r = 0.397; Δ6Minute walking distance [6MWD], r = 0.509 and ΔCOPD assessment test [CAT], r = -0.324; all p < 0.001). Group stratification by bone adjusted muscle volume changes revealed that groups with substantial muscle gain experienced a greater clinical benefit in pulmonary function improvements, QoL and physical performance (ΔFEV1%, 5.5 vs. 39.5; ΔIVC%, 4.3 vs. 28.4; Δ6MWDm, 14 vs. 110; ΔCATpts, -2 vs. -3.5 for groups with ΔMuscle, BAR% < -10 vs. > 10, respectively). BCA results among patients divided by the minimal clinically important difference for forced expiratory volume of the first second (FEV1) showed significant differences in bone-adjusted muscle and intramuscular adipose tissue (IMAT) volumes and their respective changes after 6 months (ΔMuscle, BAR% -5 vs. 3.4 and ΔIMAT, BAR% -0.62 vs. 0.60 for groups with ΔFEV1 ≤ 100 mL vs > 100 mL). Altered body composition, especially increased muscle volume, is associated with functional improvements in BLVR-treated patients.
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Affiliation(s)
- Johannes Wienker
- Division of Interventional Pneumology, Department of Pulmonary Medicine, University Medicine Essen-Ruhrlandklinik, Tüschener Weg 40, 45239, Essen, Germany.
| | - Kaid Darwiche
- Division of Interventional Pneumology, Department of Pulmonary Medicine, University Medicine Essen-Ruhrlandklinik, Tüschener Weg 40, 45239, Essen, Germany
| | - Nele Rüsche
- Division of Interventional Pneumology, Department of Pulmonary Medicine, University Medicine Essen-Ruhrlandklinik, Tüschener Weg 40, 45239, Essen, Germany
| | - Erik Büscher
- Division of Interventional Pneumology, Department of Pulmonary Medicine, University Medicine Essen-Ruhrlandklinik, Tüschener Weg 40, 45239, Essen, Germany
| | - Rüdiger Karpf-Wissel
- Division of Interventional Pneumology, Department of Pulmonary Medicine, University Medicine Essen-Ruhrlandklinik, Tüschener Weg 40, 45239, Essen, Germany
| | - Jane Winantea
- Division of Interventional Pneumology, Department of Pulmonary Medicine, University Medicine Essen-Ruhrlandklinik, Tüschener Weg 40, 45239, Essen, Germany
| | - Filiz Özkan
- Division of Interventional Pneumology, Department of Pulmonary Medicine, University Medicine Essen-Ruhrlandklinik, Tüschener Weg 40, 45239, Essen, Germany
| | - Dirk Westhölter
- Department of Pulmonary Medicine, University Medicine Essen-Ruhrlandklinik, Essen, Germany
| | - Christian Taube
- Department of Pulmonary Medicine, University Medicine Essen-Ruhrlandklinik, Essen, Germany
| | - David Kersting
- Department of Nuclear Medicine, University Hospital Essen, Essen, Germany
| | - Hubertus Hautzel
- Department of Nuclear Medicine, University Hospital Essen, Essen, Germany
| | - Luca Salhöfer
- Institute for Artificial Intelligence in Medicine, University Hospital Essen, Essen, Germany
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany
| | - René Hosch
- Institute for Artificial Intelligence in Medicine, University Hospital Essen, Essen, Germany
| | - Felix Nensa
- Institute for Artificial Intelligence in Medicine, University Hospital Essen, Essen, Germany
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany
| | - Michael Forsting
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany
| | - Benedikt M Schaarschmidt
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany
| | - Sebastian Zensen
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany
| | - Jens Theysohn
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany
| | - Lale Umutlu
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany
| | - Johannes Haubold
- Institute for Artificial Intelligence in Medicine, University Hospital Essen, Essen, Germany
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany
| | - Marcel Opitz
- Institute for Artificial Intelligence in Medicine, University Hospital Essen, Essen, Germany
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany
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Caviezel C, Rodriguez M, Sirotkin P, Held U, Opitz I, Schneiter D. Relevance of pleural adhesions for short- and long-term outcomes after lung volume reduction surgery. JTCVS OPEN 2023; 16:996-1003. [PMID: 38204661 PMCID: PMC10774947 DOI: 10.1016/j.xjon.2023.06.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 05/14/2023] [Accepted: 06/20/2023] [Indexed: 01/12/2024]
Abstract
Objective Pleural adhesions (PLAs) have been shown to be a possible risk factor for air leak after lung volume reduction surgery (LVRS), but the relevance of PLA for lung function outcome remains unclear. We analyzed our LVRS cohort for the influence of PLA on short-term (ie, prolonged air leak) and long-term outcomes. Methods Retrospective observational cohort study with 187 consecutive patients who underwent LVRS from January 2016 to December 2019. PLA were defined as relevant if they were distributed extensively at the dorsal pleura; were present in at least at 2 areas, including the dorsal pleura; or present extensively at the mediastinal pleura. In patients with bilateral emphysema, bilateral LVRS was performed preferentially. The objectives were to quantify the association of PLA and rate of prolonged air leak (chest tube >7 days), and the association of PLA with postoperative exacerbations and with forced expiratory volume in 1 second 3 months postoperatively. The associations were quantified with odds ratios for binary outcomes, and with between-group differences for continuous outcomes. To account for missing observations, 100-fold multiple imputation was used. Results PLAs were found in 46 of 187 patients (24.6%). There was a 32.6% rate of prolonged air leak (n = 61), mean chest tube time was 7.84 days. A total of 94 (50.3%) LVRSs were unilateral and 93 were bilateral. There was evidence for an association between PLA and the rate of prolonged air leak (odds ratio, 2.83; 95% CI, 1.36 to 5.89; P = .006). There was no evidence for an association between PLA and postoperative exacerbations (odds ratio, 1.11; 95% CI, 0.5 to 2.45; P = .79). There was no evidence for an association between PLA and forced expiratory volume in 1 second (estimate -1.52; 95% CI -5.67 to 2.63; P = .47). Both unilateral and bilateral LVRS showed significant postoperative improvements in forced expiratory volume in 1 second by 27% (8.43 units; 95% CI, 3.66-13.12; P = .0006) and by 28% (7.87 units; 95% CI, 4.68-11.06; P < .0001) and a reduction in residual volume of 15% (-33.9 units; 95% CI, -56.37 to -11.42; P = .003) and 15% (-34.9 units; 95% CI, -52.57 to -17.22; P = .0001), respectively. Conclusions Patients should be aware of potential prolongation of hospitalization due to PLA. However, there might be no relevant influence of PLA on lung function outcomes.
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Affiliation(s)
- Claudio Caviezel
- Department of Thoracic Surgery, University Hospital Zürich, Zürich, Switzerland
| | - Medea Rodriguez
- Department of Thoracic Surgery, University Hospital Zürich, Zürich, Switzerland
| | - Pavel Sirotkin
- Epidemiology, Biostatistics, and Prevention Institute, University of Zürich, Zürich, Switzerland
| | - Ulrike Held
- Epidemiology, Biostatistics, and Prevention Institute, University of Zürich, Zürich, Switzerland
| | - Isabelle Opitz
- Department of Thoracic Surgery, University Hospital Zürich, Zürich, Switzerland
| | - Didier Schneiter
- Department of Thoracic Surgery, University Hospital Zürich, Zürich, Switzerland
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Criner GJ. Surgical and Interventional Approaches in COPD. Respir Care 2023; 68:939-960. [PMID: 37353329 PMCID: PMC10289622 DOI: 10.4187/respcare.10825] [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] [Indexed: 06/25/2023]
Abstract
Many patients suffer from complaints of dyspnea, cough, and sputum production, clinical symptoms that hallmark the structural abnormalities that are present in patients with COPD. Although pharmacologic and non-pharmacologic medical therapies help reduce these symptoms, many of these symptoms, especially dyspnea, remain unchecked and contribute to the burden of disease in patients with COPD. Over the last 3 decades, several surgical and interventional treatments delivered via a bronchoscopic approach have been developed to complement medical therapies and show promise to improve patient outcomes. Surgical and interventional treatments target structural abnormalities of the airway and lung parenchyma that can be identified with a combination of imaging and physiological testing, factors that are key to select patients most likely to benefit from these treatments. This paper reviews surgical and bronchoscopic interventional treatment options for patients with emphysema and airways disorders.
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Affiliation(s)
- Gerard J Criner
- Department of Thoracic Medicine and Surgery, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania.
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Yuan FZ, Xing YL, Xie LJ, Yang DL, Shui W, Niu YY, Zhang X, Zhang CR. The Relationship Between Prognostic Nutritional Indexes and the Clinical Outcomes of Patients with Acute Exacerbation of Chronic Obstructive Pulmonary Disease. Int J Chron Obstruct Pulmon Dis 2023; 18:1155-1167. [PMID: 37332836 PMCID: PMC10275318 DOI: 10.2147/copd.s402717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 05/30/2023] [Indexed: 06/20/2023] Open
Abstract
Purpose Nutritional status is related to the clinical outcomes of patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD). The aim of this study was to investigate the association between nutritional status, measured by the prognostic nutritional index (PNI), and adverse hospitalization outcomes in patients with AECOPD. Methods Consecutive AECOPD patients admitted to the First Affiliated Hospital of Sun Yat-sen University between January 1, 2015 to October 31, 2021 were enrolled. We collected the clinical characteristics and laboratory data of patients. Multivariable logistic regression models were developed to assess the relationship between the baseline PNI and adverse hospitalization outcomes. A generalized additive model (GAM) was used to identify any non-linear relationship. In addition, we performed a subgroup analysis to tested the robustness of the results. Results A total of 385 AECOPD patients were involved in this retrospective cohort study. Based on the tertiles of PNI, patients in the lower tertiles of PNI showed more worse outcome incidence (30 [23.6%] versus 17 [13.2%] versus 8 [6.2%]; p < 0.001). Multivariable logistic regression analysis revealed that the PNI were independently associated with adverse hospitalization outcomes after adjustment for confounding factors (Odds ratio [OR] = 0.94, 95% CI: 0.91 to 0.97, P < 0.0001). After adjusting for confounders, smooth curve fitting showed a saturation effect, suggesting that the relationship between the PNI and adverse hospitalization outcomes was nonlinear. Two-piecewise linear regression model suggested that the incidence of adverse hospitalization outcomes significantly decreased with PNI level up to the inflection point (PNI = 42), and PNI was not associated with adverse hospitalization outcome after that point. Conclusion Decreased PNI levels at admission were determined to be associated with adverse hospitalization outcomes in patients with AECOPD. The results obtained in this study may potentially assist clinicians optimize risk evaluations and clinical management processes.
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Affiliation(s)
- Fu-Zhen Yuan
- Department of General Practice Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, People’s Republic of China
| | - Yan-Li Xing
- Department of General Medicine, East Hospital, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510700, People’s Republic of China
| | - Liang-Jie Xie
- Department of General Practice Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, People’s Republic of China
| | - Dong-Ling Yang
- Department of General Practice Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, People’s Republic of China
| | - Wei Shui
- Department of General Medicine, East Hospital, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510700, People’s Republic of China
| | - Yuan-Yuan Niu
- Department of General Medicine, East Hospital, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510700, People’s Republic of China
| | - Xin Zhang
- Department of General Medicine, East Hospital, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510700, People’s Republic of China
| | - Chang-Ran Zhang
- Department of General Medicine, East Hospital, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510700, People’s Republic of China
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Neder JA, Berton DC, Phillips DB, O'Donnell DE. Exertional ventilation/carbon dioxide output relationship in COPD: from physiological mechanisms to clinical applications. Eur Respir Rev 2021; 30:30/161/200190. [PMID: 34526312 PMCID: PMC9489189 DOI: 10.1183/16000617.0190-2020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 09/30/2020] [Indexed: 01/09/2023] Open
Abstract
There is well established evidence that the minute ventilation (V′E)/carbon dioxide output (V′CO2) relationship is relevant to a number of patient-related outcomes in COPD. In most circumstances, an increased V′E/V′CO2 reflects an enlarged physiological dead space (“wasted” ventilation), although alveolar hyperventilation (largely due to increased chemosensitivity) may play an adjunct role, particularly in patients with coexistent cardiovascular disease. The V′E/V′CO2 nadir, in particular, has been found to be an important predictor of dyspnoea and poor exercise tolerance, even in patients with largely preserved forced expiratory volume in 1 s. As the disease progresses, a high nadir might help to unravel the cause of disproportionate breathlessness. When analysed in association with measurements of dynamic inspiratory constraints, a high V′E/V′CO2 is valuable to ascertain a role for the “lungs” in limiting dyspnoeic patients. Regardless of disease severity, cardiocirculatory (heart failure and pulmonary hypertension) and respiratory (lung fibrosis) comorbidities can further increase V′E/V′CO2. A high V′E/V′CO2 is a predictor of poor outcome in lung resection surgery, adding value to resting lung hyperinflation in predicting all-cause and respiratory mortality across the spectrum of disease severity. Considering its potential usefulness, the V′E/V′CO2 should be valued in the clinical management of patients with COPD. The minute ventilation/carbon dioxide production relationship is relevant to a number of patient-related outcomes in COPD. Minute ventilation/carbon dioxide production, therefore, should be valued in the clinical management of these patients.https://bit.ly/3df2upH
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Affiliation(s)
- J Alberto Neder
- Respiratory Investigation Unit and Laboratory of Clinical Exercise Physiology, Queen's University and Kingston General Hospital, Kingston, ON, Canada
| | - Danilo C Berton
- Respiratory Investigation Unit and Laboratory of Clinical Exercise Physiology, Queen's University and Kingston General Hospital, Kingston, ON, Canada.,Division of Respiratory Medicine, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Devin B Phillips
- Respiratory Investigation Unit and Laboratory of Clinical Exercise Physiology, Queen's University and Kingston General Hospital, Kingston, ON, Canada
| | - Denis E O'Donnell
- Respiratory Investigation Unit and Laboratory of Clinical Exercise Physiology, Queen's University and Kingston General Hospital, Kingston, ON, Canada
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Chen YT, Miao K, Zhou L, Xiong WN. Stem cell therapy for chronic obstructive pulmonary disease. Chin Med J (Engl) 2021; 134:1535-1545. [PMID: 34250959 PMCID: PMC8280064 DOI: 10.1097/cm9.0000000000001596] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Indexed: 12/25/2022] Open
Abstract
ABSTRACT Chronic obstructive pulmonary disease (COPD), characterized by persistent and not fully reversible airflow restrictions, is currently one of the most widespread chronic lung diseases in the world. The most common symptoms of COPD are cough, expectoration, and exertional dyspnea. Although various strategies have been developed during the last few decades, current medical treatment for COPD only focuses on the relief of symptoms, and the reversal of lung function deterioration and improvement in patient's quality of life are very limited. Consequently, development of novel effective therapeutic strategies for COPD is urgently needed. Stem cells were known to differentiate into a variety of cell types and used to regenerate lung parenchyma and airway structures. Stem cell therapy is a promising therapeutic strategy that has the potential to restore the lung function and improve the quality of life in patients with COPD. This review summarizes the current state of knowledge regarding the clinical research on the treatment of COPD with mesenchymal stem cells (MSCs) and aims to update the understanding of the role of MSCs in COPD treatment, which may be helpful for developing effective therapeutic strategies in clinical settings.
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Affiliation(s)
- Yun-Tian Chen
- Department of Pulmonary and Critical Care Medicine, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, China
| | - Kang Miao
- Department of Pulmonary and Critical Care Medicine, Key Laboratory of Pulmonary Diseases of Health Ministry, Key Cite of National Clinical Research Center for Respiratory Disease, Wuhan Clinical Medical Research Center for Chronic Airway Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Linfu Zhou
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Wei-Ning Xiong
- Department of Pulmonary and Critical Care Medicine, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, China
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Chuang ML. Mechanisms affecting exercise ventilatory inefficiency-airflow obstruction relationship in male patients with chronic obstructive pulmonary disease. Respir Res 2020; 21:206. [PMID: 32762752 PMCID: PMC7409645 DOI: 10.1186/s12931-020-01463-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Accepted: 07/22/2020] [Indexed: 12/12/2022] Open
Abstract
Background Exercise ventilatory inefficiency is usually defined as high ventilation (\documentclass[12pt]{minimal}
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\begin{document}$$ \dot{\mathrm{V}}\mathrm{E} $$\end{document}V˙E) versus low CO2 output (\documentclass[12pt]{minimal}
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\begin{document}$$ \dot{\mathrm{V}}\mathrm{CO}2 $$\end{document}V˙CO2). The inefficiency may be lowered when airflow obstruction is severe because \documentclass[12pt]{minimal}
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\begin{document}$$ \dot{\mathrm{V}}\mathrm{E} $$\end{document}V˙E cannot be adequately increased in response to exercise. However, the ventilatory inefficiency-airflow obstruction relationship differs to a varying degree. This has been hypothesized to be affected by increased dead space fraction of tidal volume (VD/VT), acidity, hypoxemia, and hypercapnia. Methods A total of 120 male patients with chronic obstructive pulmonary disease were enrolled. Lung function and incremental exercise tests were conducted, and \documentclass[12pt]{minimal}
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\begin{document}$$ \dot{\mathrm{V}}\mathrm{E} $$\end{document}V˙E versus \documentclass[12pt]{minimal}
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\begin{document}$$ \dot{\mathrm{V}}\mathrm{E}/\dot{\mathrm{V}}\mathrm{CO}2\mathrm{S} $$\end{document}V˙E/V˙CO2S) and intercept (\documentclass[12pt]{minimal}
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\begin{document}$$ \dot{\mathrm{V}}\mathrm{E}/\dot{\mathrm{V}}\mathrm{CO}2\mathrm{I} $$\end{document}V˙E/V˙CO2I) were obtained by linear regression. Arterial blood gas analysis was also performed in 47 of the participants during exercise tests. VD/VT and lactate level were measured. Results VD/VTpeak was moderately positively related to \documentclass[12pt]{minimal}
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\begin{document}$$ \dot{\mathrm{V}}\mathrm{E}/\dot{\mathrm{V}}\mathrm{CO}2\mathrm{S} $$\end{document}V˙E/V˙CO2S (r = 0.41) and negatively related to forced expired volume in 1 sec % predicted (FEV1%) (r = − 0.27), and hence the FEV1%- \documentclass[12pt]{minimal}
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\begin{document}$$ \dot{\mathrm{V}}\mathrm{E}/\dot{\mathrm{V}}\mathrm{CO}2\mathrm{S} $$\end{document}V˙E/V˙CO2S relationship was paradoxical. The higher the \documentclass[12pt]{minimal}
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\begin{document}$$ \dot{\mathrm{V}}\mathrm{E}/\dot{\mathrm{V}}\mathrm{CO}2\mathrm{S} $$\end{document}V˙E/V˙CO2S, the higher the pH and PaO2, and the lower the PaCO2 and exercise capacity. \documentclass[12pt]{minimal}
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\begin{document}$$ \dot{\mathrm{V}}\mathrm{E}/\dot{\mathrm{V}}\mathrm{CO}2\mathrm{I} $$\end{document}V˙E/V˙CO2I was marginally related to VD/VTrest. The higher the \documentclass[12pt]{minimal}
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\begin{document}$$ \dot{\mathrm{V}}\mathrm{E}/\dot{\mathrm{V}}\mathrm{CO}2\mathrm{I} $$\end{document}V˙E/V˙CO2I, the higher the inspiratory airflow, work rate, and end-tidal PCO2peak. Conclusion 1) Dead space ventilation perturbs the airflow- \documentclass[12pt]{minimal}
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\begin{document}$$ \dot{\mathrm{V}}\mathrm{E}/\dot{\mathrm{V}}\mathrm{CO}2\mathrm{S} $$\end{document}V˙E/V˙CO2S relationship, 2) increasing ventilation thereby increases \documentclass[12pt]{minimal}
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\begin{document}$$ \dot{\mathrm{V}}\mathrm{E}/\dot{\mathrm{V}}\mathrm{CO}2\mathrm{S} $$\end{document}V˙E/V˙CO2S to maintain biological homeostasis, and 3) the physiology- \documentclass[12pt]{minimal}
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\begin{document}$$ \dot{\mathrm{V}}\mathrm{E}/\dot{\mathrm{V}}\mathrm{CO}2\mathrm{S} $$\end{document}V˙E/V˙CO2S- \documentclass[12pt]{minimal}
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\begin{document}$$ \dot{\mathrm{V}}\mathrm{E}/\dot{\mathrm{V}}\mathrm{CO}2\mathrm{I} $$\end{document}V˙E/V˙CO2I relationships are inconsistent in the current and previous studies. Trial Registration MOST 106–2314-B-040-025.
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Affiliation(s)
- Ming-Lung Chuang
- Department of Internal Medicine and Division of Pulmonary Medicine, Chung Shan Medical University Hospital, #110, Section 1, Chien-Kuo North Road, South District, Taichung, 40201, Taiwan, Republic of China. .,School of Medicine, Chung Shan Medical University, Taichung, 40201, Taiwan, Republic of China.
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Fernandez-Bussy S, Kornafeld A, Labarca G, Abia-Trujillo D, Patel NM, Herth FJF. Endoscopic Lung Volume Reduction in Relation to Body Mass Index in Patients with Severe Heterogeneous Emphysema. Respiration 2020; 99:477-483. [PMID: 32492686 DOI: 10.1159/000507591] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 03/30/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND In chronic obstructive pulmonary disease (COPD), body mass index (BMI) is significantly lower in the emphysema-dominant type. Endoscopic lung volume reduction (ELVR) is an innovative way of treating severe emphysema. However, the specific associations of low BMI values and outcomes of ELVR is not well-studied. OBJECTIVES We evaluated associations between initial BMI and changes in major outcomes after endobronchial valve (EBV) placement in patients with heterogeneous severe emphysema. METHODS In a retrospective cohort study, patients were divided into 2 groups based on their baseline BMI (higher BMI ≥21 kg/m2 [n = 18] and lower BMI <21 kg/m2 [n = 63]). Demographics, procedure data, pulmonary function test and 6-min-walk test (6MWT), dyspnea score (according to the modified Medical Research Council [mMRC] scale), BODE (BMI, airflow obstruction, dyspnea, exercise capacity) index, and complications were recorded. After 6 months, changes in variables (dWeight and dBMI) were recorded. RESULTS Comparing the 2 groups, we found the following: a dWeight of -2.34 kg and +3.39 kg (p value <0.01) and a dBMI of -0.74 and +1.99 kg/m2, in the higher BMI and lower BMI group, respectively (p value <0.01). Changes in forced expiratory volume <1 s (FEV1), 6MWT, mMRC score, and BODE index were not statistically significant. The most common complication was pneumothorax. The lower BMI group experienced more complications than the higher BMI group (40 vs. 24%). CONCLUSION Baseline BMI is relevant when selecting candidates for ELVR. Our results show that the COPD patients with a lower BMI gained a significant amount of weight, thus increasing their BMI after the procedure. The rate of complications was higher in the lower BMI group. These findings should alert physicians and encourage nutritional assessment in this population.
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Affiliation(s)
| | - Anna Kornafeld
- Division of Pulmonary and Critical Care, Mayo Clinic, Jacksonville, Florida, USA
| | - Gonzalo Labarca
- Department of Clinical Biochemistry and Immunology, Faculty of Pharmacy, University of Concepcion, Concepcion, Chile
| | - David Abia-Trujillo
- Division of Pulmonary and Critical Care, Mayo Clinic, Jacksonville, Florida, USA
| | - Neal M Patel
- Division of Pulmonary and Critical Care, Mayo Clinic, Jacksonville, Florida, USA
| | - Felix J F Herth
- Thoraxklinik, Department of Pulmonology and Respiratory Care Medicine, University of Heidelberg, Heidelberg, Germany
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Seadler B, Thuppal S, Rizvi N, Markwell S, Sawyer J, McCullough K, Crabtree T, Hazelrigg S. Clinical and Quality of Life Outcomes After Lung Volume Reduction Surgery. Ann Thorac Surg 2019; 108:866-872. [DOI: 10.1016/j.athoracsur.2019.03.089] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 02/26/2019] [Accepted: 03/26/2019] [Indexed: 11/26/2022]
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Marchioro J, Gazzotti MR, Moreira GL, Manzano BM, Menezes AMB, Perez-Padilla R, Jardim JR, Nascimento OA. Anthropometric status of individuals with COPD in the city of São Paulo, Brazil, over time - analysis of a population-based study. ACTA ACUST UNITED AC 2019; 45:e20170157. [PMID: 31365731 PMCID: PMC6715159 DOI: 10.1590/1806-3713/e20170157] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 01/18/2019] [Indexed: 12/19/2022]
Abstract
OBJECTIVE To evaluate the anthropometric data obtained for residents of the city of São Paulo, Brazil, in a study of Latin America conducted in two phases (baseline, in 2003, and follow-up, in 2012). METHODS This was an analysis of data obtained for São Paulo residents in a two-phase population-based study evaluating the prevalence of COPD and its relationship with certain risk factors among individuals ≥ 40 years of age. The anthropometric data included values for weight, height, body mass index (BMI), and waist circumference. In the follow-up phase of that study, the same variables were evaluated in the same population sample as that of the baseline phase. RESULTS Of the 1,000 São Paulo residents enrolled in the baseline phase of that study, 587 participated in the follow-up phase, and 80 (13.6%) of those 587 subjects had COPD. Comparing the baseline and follow-up phases, we found increases in all anthropometric measures in both groups (COPD and non-COPD), although the differences were significant only in the non-COPD group. The subjects with mild COPD showed increases in weight and BMI (Δweight = 1.6 ± 5.7 and ΔBMI = 0.7 ± 2.2), whereas those with moderate or severe COPD showed reductions (Δweight = -1.7 ± 8.1 and ΔBMI = -0.4 ± 3.0), as did those with severe or very severe COPD (Δweight = -0.5 ± 5.4 and ΔBMI = -0.8 ± 3.3). CONCLUSIONS Between the two phases of the study, the subjects with mild COPD showed increases in weight and BMI, whereas those with a more severe form of the disease showed reductions.
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Affiliation(s)
- Josiane Marchioro
- . Disciplina de Pneumologia, Escola Paulista de Medicina, Universidade Federal de São Paulo - EPM/UNIFESP - São Paulo (SP) Brasil
| | - Mariana Rodrigues Gazzotti
- . Disciplina de Pneumologia, Escola Paulista de Medicina, Universidade Federal de São Paulo - EPM/UNIFESP - São Paulo (SP) Brasil
| | - Graciane Laender Moreira
- . Disciplina de Pneumologia, Escola Paulista de Medicina, Universidade Federal de São Paulo - EPM/UNIFESP - São Paulo (SP) Brasil
| | - Beatriz Martins Manzano
- . Disciplina de Pneumologia, Escola Paulista de Medicina, Universidade Federal de São Paulo - EPM/UNIFESP - São Paulo (SP) Brasil
| | | | | | - José Roberto Jardim
- . Disciplina de Pneumologia, Escola Paulista de Medicina, Universidade Federal de São Paulo - EPM/UNIFESP - São Paulo (SP) Brasil
| | - Oliver Augusto Nascimento
- . Disciplina de Pneumologia, Escola Paulista de Medicina, Universidade Federal de São Paulo - EPM/UNIFESP - São Paulo (SP) Brasil.,. Faculdade de Medicina São Leopoldo Mandic, Campinas (SP) Brasil
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Zanella PB, Àvila CC, de Souza CG. Anthropometric Evaluation and Functional Assessment of Patients with Pulmonary Hypertension and its Relationship with Pulmonary Circulation Parameters and Functional Performance. J Am Coll Nutr 2018. [DOI: 10.1080/07315724.2017.1417925] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Priscila B. Zanella
- Postgraduate Program in Pulmonary Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Camila C. Àvila
- Postgraduate Program in Pulmonary Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Carolina G. de Souza
- Postgraduate Program in Pulmonary Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
- Department of Nutrition, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
- Food and Nutrition Research Center, Hospital de Clinicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, (CESAN/HCPA), Porto Alegre, Brazil
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Harris LR, Andras LM, Sponseller PD, Johnston CE, Emans JB, Skaggs DL. Comparison of Percentile Weight Gain of Growth-Friendly Constructs in Early-Onset Scoliosis. Spine Deform 2018; 6:43-47. [PMID: 29287816 DOI: 10.1016/j.jspd.2017.05.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 05/19/2017] [Accepted: 05/21/2017] [Indexed: 11/29/2022]
Abstract
STUDY DESIGN Multicenter retrospective cohort. OBJECTIVE To compare improvement in nutritional status seen in early-onset scoliosis (EOS) patients following treatment with various growth-friendly techniques, especially in underweight patients (<20th weight percentile). BACKGROUND Thoracic insufficiency resulting from EOS can lead to severe cardiopulmonary disease. In this age group, pulmonary function tests are often difficult or impossible to perform. Weight gain has been used in prior studies as a proxy for improvement and has been demonstrated following VEPTR and growing rod implantation. In this study, we aim to analyze weight gain of EOS patients treated with four different spinal implants to evaluate if significant differences in weight percentile change exist between them. METHODS Retrospective review of patients treated surgically for EOS was performed from a multicenter database. Exclusion criteria were index instrumentation at >10 years old and <2 years' follow-up. RESULTS 287 patients met the inclusion criteria and etiologies were as follows: congenital = 85; syndromic = 79; neuromuscular = 69; and idiopathic = 52. Average patient age at surgery was 5.41 years, with an average follow-up of 5.8 years. Preoperatively, 55.4% (162/287) fell below the 20th weight percentile. There was no significant difference in preoperative weight between implants (p = .77), or diagnoses (p = .25). Among this group, the mean change in weight percentile was 10.5% (range: -16.7% to 88.7%) and all implant groups increased in mean weight percentile at final follow-up. There were no significant differences in weight percentile change between the groups when divided by implant type (p = .17). CONCLUSIONS Treatment of EOS with growth-friendly constructs resulted in an increase in weight percentile for underweight patients (<20th percentile), with no significant difference between constructs. LEVEL OF EVIDENCE Level III.
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Affiliation(s)
- Liam R Harris
- Children's Orthopaedic Center, Children's Hospital Los Angeles, 4650 Sunset Blvd, Los Angeles, CA 90027, USA
| | - Lindsay M Andras
- Children's Orthopaedic Center, Children's Hospital Los Angeles, 4650 Sunset Blvd, Los Angeles, CA 90027, USA
| | - Paul D Sponseller
- Department of Orthopaedic Surgery, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Charles E Johnston
- Department of Orthopaedic Surgery, Texas Scottish Rite Hospital for Children, 2222 Welborn St, Dallas, TX 75219, USA
| | - John B Emans
- Department of Orthopaedic Surgery, Boston Children's Hospital, 300 Longwood Ave, Boston, MA 02115, USA
| | - David L Skaggs
- Children's Orthopaedic Center, Children's Hospital Los Angeles, 4650 Sunset Blvd, Los Angeles, CA 90027, USA.
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- Growing Spine Study Group, Growing Spine Foundation, 555 East Wells Street, Suite 1100, Milwaukee, WI 53202, USA
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Neder JA, Berton DC, Arbex FF, Alencar MC, Rocha A, Sperandio PA, Palange P, O'Donnell DE. Physiological and clinical relevance of exercise ventilatory efficiency in COPD. Eur Respir J 2017; 49:49/3/1602036. [PMID: 28275174 DOI: 10.1183/13993003.02036-2016] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 12/12/2016] [Indexed: 01/09/2023]
Abstract
Exercise ventilation (V'E) relative to carbon dioxide output (V'CO2 ) is particularly relevant to patients limited by the respiratory system, e.g. those with chronic obstructive pulmonary disease (COPD). High V'E-V'CO2 (poor ventilatory efficiency) has been found to be a key physiological abnormality in symptomatic patients with largely preserved forced expiratory volume in 1 s (FEV1). Establishing an association between high V'E-V'CO2 and exertional dyspnoea in mild COPD provides evidence that exercise intolerance is not a mere consequence of detraining. As the disease evolves, poor ventilatory efficiency might help explaining "out-of-proportion" breathlessness (to FEV1 impairment). Regardless, disease severity, cardiocirculatory co-morbidities such as heart failure and pulmonary hypertension have been found to increase V'E-V'CO2 In fact, a high V'E-V'CO2 has been found to be a powerful predictor of poor outcome in lung resection surgery. Moreover, a high V'E-V'CO2 has added value to resting lung hyperinflation in predicting all-cause and respiratory mortality across the spectrum of COPD severity. Documenting improved ventilatory efficiency after lung transplantation and lung volume reduction surgery provides objective evidence of treatment efficacy. Considering the usefulness of exercise ventilatory efficiency in different clinical scenarios, the V'E-V'CO2 relationship should be valued in the interpretation of cardiopulmonary exercise tests in patients with mild-to-end-stage COPD.
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Affiliation(s)
- J Alberto Neder
- Respiratory Investigation Unit and Laboratory of Clinical Exercise Physiology, Queen's University and Kingston General Hospital, Kingston, ON, Canada
| | - Danilo C Berton
- Respiratory Investigation Unit and Laboratory of Clinical Exercise Physiology, Queen's University and Kingston General Hospital, Kingston, ON, Canada.,Division of Respiratory Medicine, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Flavio F Arbex
- Pulmonary Function and Clinical Exercise Physiology, Respiratory Division, Federal University of Sao Paulo, Sao Paulo, Brazil
| | - Maria Clara Alencar
- Division of Cardiology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Alcides Rocha
- Pulmonary Function and Clinical Exercise Physiology, Respiratory Division, Federal University of Sao Paulo, Sao Paulo, Brazil
| | - Priscila A Sperandio
- Pulmonary Function and Clinical Exercise Physiology, Respiratory Division, Federal University of Sao Paulo, Sao Paulo, Brazil
| | - Paolo Palange
- Dept of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Denis E O'Donnell
- Respiratory Investigation Unit and Laboratory of Clinical Exercise Physiology, Queen's University and Kingston General Hospital, Kingston, ON, Canada
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Jones JH, Zelt JT, Hirai DM, Diniz CV, Zaza A, O'Donnell DE, Neder JA. Emphysema on Thoracic CT and Exercise Ventilatory Inefficiency in Mild-to-Moderate COPD. COPD 2016; 14:210-218. [PMID: 27997255 DOI: 10.1080/15412555.2016.1253670] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
There is growing evidence that emphysema on thoracic computed tomography (CT) is associated with poor exercise tolerance in COPD patients with only mild-to-moderate airflow obstruction. We hypothesized that an excessive ventilatory response to exercise (ventilatory inefficiency) would underlie these abnormalities. In a prospective study, 19 patients (FEV1 = 82 ± 13%, 12 Global Initiative for Chronic Obstructive Lung Disease (GOLD) stage 1) and 26 controls underwent an incremental exercise test. Ventilatory inefficiency was assessed by the ventilation ([Formula: see text]E)/CO2 output ([Formula: see text]CO2) nadir. Pulmonary blood flow (PBF) in a submaximal test was calculated by inert gas rebreathing. Emphysema was quantified as % of attenuation areas below 950 HU. Patients typically presented with centrilobular emphysema (76.8 ± 10.1% of total emphysema) in the upper lobes (upper/total lung ratio = 0.82 ± 0.04). They had lower peak oxygen uptake ([Formula: see text]O2), higher [Formula: see text]E/[Formula: see text]CO2 nadir, and greater dyspnea scores than controls (p < 0.05). Lower peak [Formula: see text]O2 and worse dyspnea were found in patients with higher [Formula: see text]E/[Formula: see text]CO2 nadirs (≥30). Patients had blunted increases in PBF from rest to iso-[Formula: see text]O2 exercise (p < 0.05). Higher [Formula: see text]E/[Formula: see text]CO2 nadir in COPD was associated with emphysema severity (r = 0.63) which, in turn, was related to reduced lung diffusing capacity (r = -0.72) and blunted changes in PBF from rest to exercise (r = -0.69) (p < 0.01). Ventilation "wasted" in emphysematous areas is associated with impaired exercise ventilatory efficiency in mild-to-moderate COPD. Exercise ventilatory inefficiency links structure (emphysema) and function (DLCO) to a key clinical outcome (poor exercise tolerance) in COPD patients with only modest spirometric abnormalities.
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Affiliation(s)
- Joshua H Jones
- a Laboratory of Clinical Exercise Physiology (LACEP), Division of Respiratory and Critical Care Medicine, Department of Medicine, Queen's University , Kingston , ON , Canada
| | - Joel T Zelt
- a Laboratory of Clinical Exercise Physiology (LACEP), Division of Respiratory and Critical Care Medicine, Department of Medicine, Queen's University , Kingston , ON , Canada
| | - Daniel M Hirai
- a Laboratory of Clinical Exercise Physiology (LACEP), Division of Respiratory and Critical Care Medicine, Department of Medicine, Queen's University , Kingston , ON , Canada
| | - Camilla V Diniz
- a Laboratory of Clinical Exercise Physiology (LACEP), Division of Respiratory and Critical Care Medicine, Department of Medicine, Queen's University , Kingston , ON , Canada
| | - Aida Zaza
- a Laboratory of Clinical Exercise Physiology (LACEP), Division of Respiratory and Critical Care Medicine, Department of Medicine, Queen's University , Kingston , ON , Canada
| | - Denis E O'Donnell
- b Respiratory Investigation Unit (RIU), Division of Respiratory and Critical Care Medicine, Department of Medicine, Queen's University , Kingston , ON , Canada
| | - J Alberto Neder
- a Laboratory of Clinical Exercise Physiology (LACEP), Division of Respiratory and Critical Care Medicine, Department of Medicine, Queen's University , Kingston , ON , Canada
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Abstract
BACKGROUND Lung volume reduction surgery (LVRS) performed to treat patients with severe diffuse emphysema was reintroduced in the nineties. Lung volume reduction surgery aims to resect damaged emphysematous lung tissue, thereby increasing elastic properties of the lung. This treatment is hypothesised to improve long-term daily functioning and quality of life, although it may be costly and may be associated with risks of morbidity and mortality. Ten years have passed since the last version of this review was prepared, prompting us to perform an update. OBJECTIVES The objective of this review was to gather all available evidence from randomised controlled trials comparing the effectiveness of lung volume reduction surgery (LVRS) versus non-surgical standard therapy in improving health outcomes for patients with severe diffuse emphysema. Secondary objectives included determining which subgroup of patients benefit from LVRS and for which patients LVRS is contraindicated, to establish the postoperative complications of LVRS and its morbidity and mortality, to determine which surgical approaches for LVRS are most effective and to calculate the cost-effectiveness of LVRS. SEARCH METHODS We identified RCTs by using the Cochrane Airways Group Chronic Obstructive Pulmonary Disease (COPD) register, in addition to the online clinical trials registers. Searches are current to April 2016. SELECTION CRITERIA We included RCTs that studied the safety and efficacy of LVRS in participants with diffuse emphysema. We excluded studies that investigated giant or bullous emphysema. DATA COLLECTION AND ANALYSIS Two independent review authors assessed trials for inclusion and extracted data. When possible, we combined data from more than one study in a meta-analysis using RevMan 5 software. MAIN RESULTS We identified two new studies (89 participants) in this updated review. A total of 11 studies (1760 participants) met the entry criteria of the review, one of which accounted for 68% of recruited participants. The quality of evidence ranged from low to moderate owing to an unclear risk of bias across many studies, lack of blinding and low participant numbers for some outcomes. Eight of the studies compared LVRS versus standard medical care, one compared two closure techniques (stapling vs laser ablation), one looked at the effect of buttressing the staple line on the effectiveness of LVRS and one compared traditional 'resectional' LVRS with a non-resectional surgical approach. Participants completed a mandatory course of pulmonary rehabilitation/physical training before the procedure commenced. Short-term mortality was higher for LVRS (odds ratio (OR) 6.16, 95% confidence interval (CI) 3.22 to 11.79; 1489 participants; five studies; moderate-quality evidence) than for control, but long-term mortality favoured LVRS (OR 0.76, 95% CI 0.61 to 0.95; 1280 participants; two studies; moderate-quality evidence). Participants identified post hoc as being at high risk of death from surgery were those with particularly impaired lung function, poor diffusing capacity and/or homogenous emphysema. Participants with upper lobe-predominant emphysema and low baseline exercise capacity showed the most favourable outcomes related to mortality, as investigators reported no significant differences in early mortality between participants treated with LVRS and those in the control group (OR 0.87, 95% CI 0.23 to 3.29; 290 participants; one study), as well as significantly lower mortality at the end of follow-up for LVRS compared with control (OR 0.45, 95% CI 0.26 to 0.78; 290 participants; one study). Trials in this review furthermore provided evidence of low to moderate quality showing that improvements in lung function parameters other than forced expiratory volume in one second (FEV1), quality of life and exercise capacity were more likely with LVRS than with usual follow-up. Adverse events were more common with LVRS than with control, specifically the occurrence of (persistent) air leaks, pulmonary morbidity (e.g. pneumonia) and cardiovascular morbidity. Although LVRS leads to an increase in quality-adjusted life-years (QALYs), the procedure is relatively costly overall. AUTHORS' CONCLUSIONS Lung volume reduction surgery, an effective treatment for selected patients with severe emphysema, may lead to better health status and lung function outcomes, specifically for patients who have upper lobe-predominant emphysema with low exercise capacity, but the procedure is associated with risks of early mortality and adverse events.
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Affiliation(s)
| | | | - Leong Ung Tiong
- The Queen Elizabeth HospitalDepartment of SurgeryAdelaideAustralia
| | - Brian J Smith
- The University of AdelaideSchool of MedicineAdelaideAustralia
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Stolk J, Broekman W, Mauad T, Zwaginga JJ, Roelofs H, Fibbe WE, Oostendorp J, Bajema I, Versteegh MIM, Taube C, Hiemstra PS. A phase I study for intravenous autologous mesenchymal stromal cell administration to patients with severe emphysema. QJM 2016; 109:331-6. [PMID: 26819296 PMCID: PMC4888332 DOI: 10.1093/qjmed/hcw001] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Mesenchymal stromal cells (MSCs) may reduce inflammation and promote tissue repair in pulmonary emphysema. AIM To study the safety and feasibility of bone marrow-derived autologous (BM-) MSC intravenous administration to patients with severe emphysema. DESIGN A phase I, prospective open-label study registered at ClinicalTrials.gov as NCT01306513 Eligible patients had lung volume reduction surgery (LVRS) on two separate occasions. During the first LVRS bone marrow was collected, from which MSCs were isolated and expanded ex vivo After 8 weeks, patients received two autologous MSC infusions 1 week apart, followed by the second LVRS procedure at 3 weeks after the second BM-MSC infusion. METHODS Up to 3 weeks after the last MSC infusion adverse events were recorded. Using immunohistochemistry and qPCR for analysis of cell and proliferation markers, emphysematous lung tissue obtained during the first surgery was compared with lung tissue obtained after the second surgical session to assess BM-MSC effects. RESULTS From 10 included patients three were excluded: two did not receive MSCs due to insufficient MSC culture expansion, and one had no second surgery. No adverse events related to MSC infusions occurred and lung tissue showed no fibrotic responses. After LVRS and MSC infusions alveolar septa showed a 3-fold increased expression of the endothelial marker CD31 (P = 0.016). CONCLUSIONS Autologous MSC treatment in severe emphysema is feasible and safe. The increase in CD31 expression after LVRS and MSC treatment suggests responsiveness of microvascular endothelial cells in the most severely affected parts of the lung.
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Affiliation(s)
- J Stolk
- From the Department of Pulmonology, Leiden University Medical Center, Leiden, the Netherlands,
| | - W Broekman
- From the Department of Pulmonology, Leiden University Medical Center, Leiden, the Netherlands
| | - T Mauad
- Department of Pathology, São Paulo University Medical School, São Paulo, Brazil
| | - J J Zwaginga
- Department of Immunohaematology and Blood Transfusion
| | - H Roelofs
- Department of Immunohaematology and Blood Transfusion
| | - W E Fibbe
- Department of Immunohaematology and Blood Transfusion
| | | | | | - M I M Versteegh
- Department of Cardiothoracic Surgery, Leiden University Medical Center, Leiden, the Netherlands
| | - C Taube
- From the Department of Pulmonology, Leiden University Medical Center, Leiden, the Netherlands
| | - P S Hiemstra
- From the Department of Pulmonology, Leiden University Medical Center, Leiden, the Netherlands
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Neder JA, Alharbi A, Berton DC, Alencar MCN, Arbex FF, Hirai DM, Webb KA, O'Donnell DE. Exercise Ventilatory Inefficiency Adds to Lung Function in Predicting Mortality in COPD. COPD 2016; 13:416-24. [DOI: 10.3109/15412555.2016.1158801] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Schols AMWJ. The 2014 ESPEN Arvid Wretlind Lecture: Metabolism & nutrition: Shifting paradigms in COPD management. Clin Nutr 2015; 34:1074-9. [PMID: 26474814 DOI: 10.1016/j.clnu.2015.09.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 09/10/2015] [Indexed: 01/09/2023]
Abstract
COPD is a chronic disease of the lungs, but heterogeneous with respect to clinical manifestations and disease progression. This has consequences for health risk assessment, stratification and management. Heterogeneity can be driven by pulmonary events but also by systemic consequences (e.g. cachexia and muscle weakness) and co-morbidity (e.g. osteoporosis, diabetes and cardiovascular disease). This paper shows how a metabolic perspective on COPD has contributed significantly to understanding clinical heterogeneity and the need for a paradigm shift from reactive medicine towards predictive, preventive, personalized and participatory medicine. These insights have also lead to a paradigm shift in nutritional therapy for COPD from initial ignorance or focusing on putative adverse effects of carbohydrate overload on the ventilatory system to beneficial effects of nutritional intervention on body composition and physical functioning as integral part of disease management. The wider implications beyond COPD as disease have been as clinical model for translational cachexia research.
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Affiliation(s)
- Annemie M W J Schols
- NUTRIM School of Nutrition and Translational Research in Metabolism, Department of Respiratory Medicine, Maastricht University Medical Centre, PO Box 5800, 6202 AZ Maastricht, The Netherlands.
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Neder JA, Arbex FF, Alencar MCN, O’Donnell CD, Cory J, Webb KA, O’Donnell DE. Exercise ventilatory inefficiency in mild to end-stage COPD. Eur Respir J 2014; 45:377-87. [DOI: 10.1183/09031936.00135514] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Ventilatory inefficiency during exercise is a key pathophysiological feature of chronic obstructive pulmonary disease. Currently, it is unknown how this physiological marker relates to clinically relevant outcomes as resting ventilatory impairment progresses across disease stages.Slope and intercept of the linear region of the ventilation–carbon dioxide output relationship and the ratio between these variables, at the lowest point (nadir), were contrasted in 316 patients with Global Initiative for Chronic Obstructive Lung Disease (GOLD) stages 1–4 (forced expiratory volume in 1 s, ranging from 148% pred to 12% pred) and 69 aged- and gender-matched controls,Compared to controls, slope and intercept were higher in GOLD stages 1 and 2, leading to higher nadirs (p<0.05). Despite even larger intercepts in GOLD stages 3 and 4, slopes diminished as disease evolved (from mean±sd35±6 in GOLD stage 1 to 24±5 in GOLD stage 3, p<0.05). As a result, there were no significant differences in nadirs among patient groups. Higher intercepts, across all stages (p<0.01), and to a lesser extent lower slopes in GOLD stages 2–4 (p<0.05), were related to greater mechanical constraints, worsening pulmonary gas exchange, higher dyspnoea scores, and poorer exercise capacity.Increases in the ventilation intercept best indicate the progression of exercise ventilatory inefficiency across the whole spectrum of chronic obstructive pulmonary disease severity.
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Schols AM, Ferreira IM, Franssen FM, Gosker HR, Janssens W, Muscaritoli M, Pison C, Rutten-van Mölken M, Slinde F, Steiner MC, Tkacova R, Singh SJ. Nutritional assessment and therapy in COPD: a European Respiratory Society statement. Eur Respir J 2014; 44:1504-20. [PMID: 25234804 DOI: 10.1183/09031936.00070914] [Citation(s) in RCA: 174] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Nutrition and metabolism have been the topic of extensive scientific research in chronic obstructive pulmonary disease (COPD) but clinical awareness of the impact dietary habits, nutritional status and nutritional interventions may have on COPD incidence, progression and outcome is limited. A multidisciplinary Task Force was created by the European Respiratory Society to deliver a summary of the evidence and description of current practice in nutritional assessment and therapy in COPD, and to provide directions for future research. Task Force members conducted focused reviews of the literature on relevant topics, advised by a methodologist. It is well established that nutritional status, and in particular abnormal body composition, is an important independent determinant of COPD outcome. The Task Force identified different metabolic phenotypes of COPD as a basis for nutritional risk profile assessment that is useful in clinical trial design and patient counselling. Nutritional intervention is probably effective in undernourished patients and probably most when combined with an exercise programme. Providing evidence of cost-effectiveness of nutritional intervention is required to support reimbursement and thus increase access to nutritional intervention. Overall, the evidence indicates that a well-balanced diet is beneficial to all COPD patients, not only for its potential pulmonary benefits, but also for its proven benefits in metabolic and cardiovascular risk.
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Affiliation(s)
- Annemie M Schols
- NUTRIM School for Nutrition, Toxicology and Metabolism, Dept of Respiratory Medicine, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Ivone M Ferreira
- Asthma and Airways Centre, Toronto Western Hospital, Toronto, Canada Dept of Respiratory Medicine, McMaster University, Hamilton, Canada
| | - Frits M Franssen
- Program Development Centre, CIRO+ (Centre of Expertise for Chronic Organ Failure), Horn, The Netherlands
| | - Harry R Gosker
- NUTRIM School for Nutrition, Toxicology and Metabolism, Dept of Respiratory Medicine, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Wim Janssens
- Laboratory of Respiratory Medicine, Katholieke Universiteit, Leuven, Belgium
| | | | - Christophe Pison
- Clinique Universitaire de Pneumologie, Institut du Thorax, CHU Grenoble, Grenoble, France Inserm U1055, Grenoble, France Université Joseph Fourier, Grenoble, France European Institute for Systems Biology and Medicine, Lyon, France
| | - Maureen Rutten-van Mölken
- Erasmus University Rotterdam, Institute of Health Policy and Management, Rotterdam The Netherlands Erasmus University Rotterdam, Institute of Medical Technology Assessment, Rotterdam, The Netherlands
| | - Frode Slinde
- Dept of Internal Medicine and Clinical Nutrition, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Michael C Steiner
- Centre for Exercise and Rehabilitation Science, Leicester Respiratory Biomedical Research Unit, University Hospitals of Leicester NHS Trust, Glenfield Hospital, Leicester, UK
| | - Ruzena Tkacova
- Dept of Respiratory Medicine, Faculty of Medicine, P.J. Safarik University, Kosice, Slovakia L. Pasteur University Hospital, Kosice, Slovakia
| | - Sally J Singh
- Centre for Exercise and Rehabilitation Science, Leicester Respiratory Biomedical Research Unit, University Hospitals of Leicester NHS Trust, Glenfield Hospital, Leicester, UK
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Abstract
COPD is an important global health problem. In addition to pulmonary impairment, systemic inflammation, musculoskeletal abnormalities, and cardiovascular comorbidity influence disease burden and mortality risk. Body weight and body composition are important discriminants in classifying disease heterogeneity. The rationale for and efficacy of caloric supplementation in preventing and treating involuntary weight loss is currently well established. For maintenance of muscle and bone tissue, appropriately timed, high-quality protein intake and addressing vitamin D deficiency must be considered. Specific nutrients (eg, n-3 polyunsaturated fatty acids and polyphenolic compounds) may have the pharmacologic potential to boost decreased muscle mitochondrial metabolism and enhance impaired physical performance, particularly when the metabolic stimulus of physical activity alone is limited. At this stage, evidence is insufficient to support an intake of high doses of single nutritional supplements to modulate respiratory pathology, but some small studies have identified micronutrient modulation via the diet as a promising intervention.
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Affiliation(s)
- Annemie M W J Schols
- Department of Respiratory Medicine, NUTRIM School for Nutrition, Toxicology and Metabolism, Maastricht University Medical Center, Maastricht, The Netherlands.
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23
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Han MK, Criner GJ. Update in chronic obstructive pulmonary disease 2012. Am J Respir Crit Care Med 2013; 188:29-34. [PMID: 23815721 DOI: 10.1164/rccm.201302-0319up] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Meilan K Han
- Division of Pulmonary and Critical Care Medicine, University of Michigan, Ann Arbor, MI, USA
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Mineo D, Mineo TC. Lung volume reduction surgery: a better understanding for a renewed challenge in the treatment of emphysema. Am J Respir Crit Care Med 2012. [PMID: 23204369 DOI: 10.1164/rccm.201209-1751ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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