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Podder S, Khan M, Sink Z, Verga S, Kurman JS, Malsin E. Bronchoscopic Lung Volume Reduction: A Review. Semin Respir Crit Care Med 2024. [PMID: 39025124 DOI: 10.1055/s-0044-1787876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
Bronchoscopic lung volume reduction (BLVR) is an established treatment modality for the management of advanced chronic obstructive pulmonary disease complicated by severe emphysema and hyperinflation refractory to other therapies. BLVR aims to reduce hyperinflation and residual volume, thereby improving pulmonary function, symptom control, and quality of life. Multiple distinct devices and technologies, including endobronchial coils, thermal vapor ablation, bio-lung volume reduction, and airway bypass stenting, have been developed to achieve lung volume reduction with varying degrees of accessibility and evidence. The most promising BLVR treatment modality to date has been the placement of one-way endobronchial valves (EBVs), with more than 25,000 cases performed worldwide. Identifying symptomatic patients who would benefit from BLVR is challenging and can be time and resource intensive, and candidacy may be limited by physiologic parameters. Additional new technologies may be able to improve the identification and evaluation of candidates as well as increase the portion of evaluated patients who ultimately qualify for BLVR. In this review, we aim to provide historical context to BLVR, summarize the available evidence regarding its use, discuss potential complications, and provide readers with a clear guide to patient selection and referral for BLVR, with a focus on EBV placement. In addition, we will highlight potential future directions for the field.
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Affiliation(s)
- Shreya Podder
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Marium Khan
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Zane Sink
- Jerry M. Wallace School of Osteopathic Medicine, Campbell University, Lillington, North Carolina
| | - Steven Verga
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
- Froedtert Memorial Lutheran Hospital, Milwaukee, Wisconsin
| | - Jonathan S Kurman
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
- Froedtert Memorial Lutheran Hospital, Milwaukee, Wisconsin
| | - Elizabeth Malsin
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
- Froedtert Memorial Lutheran Hospital, Milwaukee, Wisconsin
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Evidence of ventilatory constraints during exercise in hypermobile Ehlers-Danlos syndrome. Eur J Appl Physiol 2022; 122:2367-2374. [PMID: 35941284 DOI: 10.1007/s00421-022-05017-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 07/25/2022] [Indexed: 11/03/2022]
Abstract
PURPOSE Hypermobile Ehlers-Danlos syndrome (hEDS) is a connective tissue disorder with many different symptoms such as pain, fatigue, dysautonomia, or respiratory symptoms. Among the respiratory manifestations described, the most frequent are exertional dyspnea and breathing difficulties. Mechanical ventilatory constraints during exercise could participate in these respiratory manifestations. The objective of this study was to explore the response of pulmonary flow-volume loops to exercise in patients with hEDS and to look for dynamic hyperinflation and expiratory flow limitation during exercise. METHODS For this purpose, breathing pattern and tidal exercise flow-volume loops were recorded at two workloads (30% and 80% of the peak power output) of a constant load exercise test. RESULTS Twelve patients were included (11 women, mean age 41 ± 14 years). The results showed a decrease (p = 0.028) in the inspiratory capacity (from 3.12 ± 0.49 L to 2.97 ± 0.52 L), an increase (p = 0.025) in the end-expiratory lung volume (from 0.73 ± 0.68 L to 0.88 ± 0.66 L, i.e., from EELV comprising 17 ± 12% to 21 ± 12% of forced vital capacity) between the two workloads in favor of dynamic hyperinflation, and half of the patients had expiratory flow limitations. CONCLUSION This exploratory study provides evidence for mechanical ventilatory constraints during exercise in patients with hEDS, which may induce discomfort during exercise and could contribute to the respiratory symptomatology. TRIAL REGISTRATION NUMBER This study is part of a larger clinical trial (ID: NCT04680793, December 2020).
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Boontha N, Chen S, Lin JJ. Impairment of scapular control in individuals with chronic obstructive pulmonary disease (COPD): Systematic review and meta-analysis. Physiother Theory Pract 2022:1-16. [PMID: 35403547 DOI: 10.1080/09593985.2022.2060885] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND Upper quadrant geometrical changes in individuals with chronic obstructive pulmonary disease (COPD) appear to have negative influences on geometrical arrangements of the thorax and scapula. OBJECTIVE The purpose of this systematic review was to assess the impairment of scapular control in individuals with COPD as compared with healthy controls. METHODS We systematically searched seven electronic databases from inception to June 2021 and updated the searches again in December 2021. Eligible studies included the participants with COPD and compared scapular control outcomes (scapular/shoulder kinematic or related muscle activity) with a control group. Two researchers independently searched for, screened, extracted data from, and evaluated the quality of all articles. RESULTS Seven studies met the inclusion criteria and only five studies with 190 subjects were included in the meta-analyses. Subgroup analyses showed that the control group exhibited more scapular anterior tilt (SMD: 0.46; 95% CI: 0.01 to 0.90) and shoulder flexion (SMD: -1.02; 95% CI: -1.79 to -0.26) as compared with the COPD group. Conversely, the COPD group exhibited more scapular elevation (SMD: -1.03; 95% CI: -1.69 to -0.37), internal rotation (SMD: -1.65; 95% CI: -3.19 to -0.10), and protraction (SMD: -0.75; 95% CI: -1.18 to -0.32) compared with the control group. All other outcomes revealed non-significant findings. CONCLUSION This review demonstrated scapular control impairments, such as scapular elevation, internal rotation, protraction, and anterior tilt in a static position in patients with COPD. To validate these findings, high-quality randomized control trials with large sample sizes and reliable outcome measures should be conducted.
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Affiliation(s)
- Natharin Boontha
- School and Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University, Taipei City, Taiwan (R.O.C)
- Department of Physical Therapy, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Shiauyee Chen
- Department of Physical Medicine and Rehabilitation, Taipei Medical University–Wan Fang Hospital Taipei Taiwan (R.O.C.)
- School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Jiu-Jenq Lin
- School and Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University, Taipei City, Taiwan (R.O.C)
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Kim Y, Kim SH, Rhee CK, Lee JS, Lee CY, Kim DK, Shin KC, Jung KS, Yoo KH, Park YB. Air Trapping and the Risk of COPD Exacerbation: Analysis From Prospective KOCOSS Cohort. Front Med (Lausanne) 2022; 9:835069. [PMID: 35372402 PMCID: PMC8965692 DOI: 10.3389/fmed.2022.835069] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 02/14/2022] [Indexed: 11/13/2022] Open
Abstract
Background and AimsAir trapping is a predictive index for a decline in lung function and mortality in patients with chronic obstructive pulmonary disease (COPD). However, the role of air trapping in COPD exacerbation has rarely been studied. Therefore, this study aimed to investigate the impact of air trapping as a continuous parameter on COPD exacerbation.Materials and MethodsTo evaluate air trapping, we identified the ratio of residual volume (RV) to total lung capacity (TLC) of patients with COPD from the Korean COPD Subgroup Study (KOCOSS) cohort, which is a multicenter-based, prospective, consecutive cohort in Korea. The primary outcome was a development of COPD exacerbation during 3 years of follow-up.ResultsOf 2,181 participants, 902 patients measured the RV/TLC ratio in the baseline enrollment, and 410 were evaluated for assessing the development of COPD exacerbation. Of 410 patients, the rate of moderate to severe exacerbation and severe exacerbation was 70.7% and 25.9%. A 10% increase of RV/TLC ratio increased the risk of the moderate to severe exacerbation by 35% and severe exacerbation by 36%. In subgroup analysis, an interaction effect between triple inhaled therapy and the RV/TLC ratio for severe exacerbation nullified the association between the RV/TLC ratio and severe exacerbation (p for interaction = 0.002).ConclusionsIn this prospective cohort study, we found that air trapping (representing RV/TLC ratio as a continuous parameter) showed an association with an increased risk of COPD exacerbation, particularly in patients who have not undergone triple inhaler therapy.
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Affiliation(s)
- Youlim Kim
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Konkuk University Hospital, School of Medicine, Konkuk University, Seoul, South Korea
| | - Sang Hyuk Kim
- Division of Pulmonology and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea
| | - Chin Kook Rhee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Jae Seung Lee
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Chang Youl Lee
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Hallym University Chuncheon Sacred Heart Hospital, Chuncheon, South Korea
| | - Deog Kyeom Kim
- Department of Pulmonary, Allergy and Critical Care Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, South Korea
| | - Kyeong-Cheol Shin
- Division of Pulmonology and Allergy, Regional Center for Respiratory Disease, Yeungnam University Medical Center, Daegu, South Korea
| | - Ki Suck Jung
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Anyang, South Korea
| | - Kwang Ha Yoo
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Konkuk University Hospital, School of Medicine, Konkuk University, Seoul, South Korea
| | - Yong Bum Park
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Hallym Univeristy Kangdong Sacred Heart Hospital, Seoul, South Korea
- *Correspondence: Yong Bum Park
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Sarkar M, Madabhavi IV, Mehta S, Mohanty S. Use of flow volume curve to evaluate large airway obstruction. Monaldi Arch Chest Dis 2022; 92. [DOI: 10.4081/monaldi.2022.1947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 01/16/2022] [Indexed: 11/23/2022] Open
Abstract
The flow volume loop (FVL) is a graphic display of airflow against lung volumes at different levels obtained during the maximum inspiratory and expiratory maneuver. It is a simple and reproducible method of lung function assessment. A narrative review was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. PubMed, EMBASE, Ovid MEDLINE and CINAHL databases were queried and reviewed for studies pertinent to the various FVLs abnormalities and their mechanisms from January 2020 to December 2020. We used the following search terms; flow-volume loop, upper airway obstruction, Obstructive airway disease, and spirometry. Assessing the shape of the flow-volume loop is particularly helpful in diagnosing and localizing upper airway obstruction. They are also helpful in identifying bronchodilator response to treatment. Characteristic FVLs is also seen in patients with obstructive or restrictive lung disorders. Spirometry should be interpreted using the absolute values for flows and volumes as well as the flow volume and volume time curves.
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Gulart AA, Munari AB, Klein SR, Gavenda SG, Sagrillo LM, Mayer AF. Performance in the Glittre-ADL Test is Associated with the Pulmonary Function of Patients with Chronic Obstructive Pulmonary Disease. COPD 2021; 18:637-642. [PMID: 34865582 DOI: 10.1080/15412555.2021.2008339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The relationship between lung function and performance in some functional tests, as the six-minute walk test (6MWT) and Glittre-ADL test (TGlittre) are still discrepant in patients with chronic obstructive pulmonary disease (COPD). This study aimed to verify which test better correlates and is better explained by the pulmonary function, and which test better discriminates patients regarding the severity of the disease. Seventy-four patients with moderate to very severe COPD (54 men; 66 ± 9 years; FEV1: 37.2 ± 14.3%pred) were included. Spirometry, 6MWT and TGlittre were performed. The results showed weak to moderate correlation between pulmonary function variables and 6MWT (0.36 ≤ r ≤ 0.45) and TGlittre (-0.44 ≤ r ≤ -0.53). In patients with performance of ≤400 m in the 6MWT, a strong correlation was observed between TGlittre with FEV1 (%pred) (r = -0.82; p < .001). The pulmonary function variable that better predict the functional tests performance was FEV1 (R2 = 0.17). Both functional tests were able to discriminate patients with COPD GOLD 4 from the other classifications. When compared to GOLD 2 patients, GOLD 4 patients presented higher time spent on TGlittre (p < .001). When compared to GOLD 3 patients, GOLD 4 patients had higher TGlittre (p = .001). No statistical differences were found in the 6MWT between GOLD 3 and 4, as well as between GOLD 2 and 3. In conclusion, the pulmonary function presents stronger correlations and better explain the variability of TGlittre than of the 6MWT, especially in patients with greater functional impairment. The TGlittre seems to better discriminate patients with COPD regarding the severity of lung function.
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Affiliation(s)
- Aline Almeida Gulart
- Núcleo de Assistência, Ensino e Pesquisa em Reabilitação Pulmonar (NuReab), Universidade do Estado de Santa Catarina (UDESC), Florianopolis, Brazil.,Programa de Pós-Graduação em Ciências do Movimento Humano, Centro de Ciências da Saúde e do Esporte (CEFID), Universidade do Estado de Santa Catarina (UDESC), Florianopolis, Brazil
| | - Anelise Bauer Munari
- Núcleo de Assistência, Ensino e Pesquisa em Reabilitação Pulmonar (NuReab), Universidade do Estado de Santa Catarina (UDESC), Florianopolis, Brazil.,Programa de Pós-Graduação em Ciências do Movimento Humano, Centro de Ciências da Saúde e do Esporte (CEFID), Universidade do Estado de Santa Catarina (UDESC), Florianopolis, Brazil
| | - Suelen Roberta Klein
- Núcleo de Assistência, Ensino e Pesquisa em Reabilitação Pulmonar (NuReab), Universidade do Estado de Santa Catarina (UDESC), Florianopolis, Brazil.,Programa de Pós-Graduação em Ciências do Movimento Humano, Centro de Ciências da Saúde e do Esporte (CEFID), Universidade do Estado de Santa Catarina (UDESC), Florianopolis, Brazil
| | - Simone Graciosa Gavenda
- Núcleo de Assistência, Ensino e Pesquisa em Reabilitação Pulmonar (NuReab), Universidade do Estado de Santa Catarina (UDESC), Florianopolis, Brazil.,Programa de Pós-Graduação em Fisioterapia, Centro de Ciências da Saúde e do Esporte (CEFID), Universidade do Estado de Santa Catarina (UDESC), Florianopolis, Brazil
| | - Luiza Minato Sagrillo
- Núcleo de Assistência, Ensino e Pesquisa em Reabilitação Pulmonar (NuReab), Universidade do Estado de Santa Catarina (UDESC), Florianopolis, Brazil.,Programa de Pós-Graduação em Ciências do Movimento Humano, Centro de Ciências da Saúde e do Esporte (CEFID), Universidade do Estado de Santa Catarina (UDESC), Florianopolis, Brazil
| | - Anamaria Fleig Mayer
- Núcleo de Assistência, Ensino e Pesquisa em Reabilitação Pulmonar (NuReab), Universidade do Estado de Santa Catarina (UDESC), Florianopolis, Brazil.,Programa de Pós-Graduação em Ciências do Movimento Humano, Centro de Ciências da Saúde e do Esporte (CEFID), Universidade do Estado de Santa Catarina (UDESC), Florianopolis, Brazil.,Programa de Pós-Graduação em Fisioterapia, Centro de Ciências da Saúde e do Esporte (CEFID), Universidade do Estado de Santa Catarina (UDESC), Florianopolis, Brazil
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Siler TM, Hohenwarter C, Xiong K, Sciarappa K, Sanjar S, Sharma S. Efficacy of Nebulized Glycopyrrolate on Lung Hyperinflation in Patients with COPD. Pulm Ther 2021; 7:503-516. [PMID: 34232493 PMCID: PMC8260570 DOI: 10.1007/s41030-021-00166-5] [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: 05/07/2021] [Accepted: 06/21/2021] [Indexed: 12/02/2022] Open
Abstract
INTRODUCTION Lung hyperinflation in chronic obstructive pulmonary disease (COPD) is associated with activity limitation, impaired cardiac output, and mortality. Several studies have demonstrated that long-acting muscarinic antagonists (LAMAs) delivered by dry powder inhalers can promote lung deflation; however, the potential of nebulized LAMAs on improving hyperinflation in COPD is currently unknown. METHODS This single-center, randomized, double-blind, two-way crossover study (NCT04155047) evaluated the efficacy of a single dose of nebulized LAMA [glycopyrrolate (GLY) 25 µg] versus placebo in patients with COPD and lung hyperinflation. Patients with moderate-to-severe COPD and a residual volume (RV) ≥ 130% of predicted normal were included. The primary endpoint was changed from baseline in RV at 6 h post-treatment. Other endpoints included changes from baseline in spirometric and plethysmographic measures up to 6 h post-treatment. RESULTS A total of 22 patients (mean pre-bronchodilator RV, 153.7% of predicted normal) were included. The primary objective of the study was not met; the placebo-adjusted least squares (LS) mean [95% confidence interval (CI) change from baseline in RV with GLY at 6 h post-treatment was - 0.323 l (- 0.711 to 0.066); p = 0.0987]. A post hoc evaluation of the primary analysis was conducted after excluding a single statistical outlier; substantial improvements in RV with GLY compared with placebo was observed after exclusion of this outlier [placebo-adjusted LS mean change from baseline (95% CI) in RV was - 0.446 l (- 0.741 to - 0.150)]. Improvements from baseline were also observed with GLY compared with placebo in spirometric and plethysmographic measures up to 6 h post-treatment. GLY was generally safe, and no new safety signals were detected. CONCLUSIONS This is the first study to evaluate the effect of nebulized GLY on lung deflation. Nebulized GLY resulted in marked improvements in RV up to 6 h post-treatment, compared with placebo. Improvements were also observed with GLY in spirometric and plethysmographic parameters of lung function. TRIAL REGISTRATION ClinicalTrials.gov identifier, NCT04155047.
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Affiliation(s)
| | | | | | | | | | - Sanjay Sharma
- Sunovion Pharmaceuticals Inc., Marlborough, MA, USA.
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Galera R, Casitas R, Martínez-Cerón E, Rodríguez-Fraga O, Utrilla C, Torres I, Cubillos-Zapata C, García-Río F. Effect of Dynamic Hyperinflation on Cardiac Response to Exercise of Patients With Chronic Obstructive Pulmonary Disease. Arch Bronconeumol 2021; 57:406-414. [PMID: 34088392 DOI: 10.1016/j.arbr.2020.09.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 09/06/2020] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Although the major limitation to exercise performance in patients with COPD is dynamic hyperinflation (DH), little is known about its relation with cardiac response to exercise. Our objectives were to compare the exercise response of stroke volume (SV) and cardiac output (CO) between COPD patients with or without DH and control subjects, and to assess the main determinants. METHODS Fifty-seven stable COPD patients without cardiac comorbidity and 25 healthy subjects were recruited. Clinical evaluation, baseline function tests, computed tomography and echocardiography were conducted in all subjects. Patients performed consecutive incremental exercise tests with measurement of operating lung volumes and non-invasive measurement of SV, CO and oxygen uptake (VO2) by an inert gas rebreathing method. Biomarkers of systemic inflammation and oxidative stress, tissue damage/repair, cardiac involvement and airway inflammation were measured. RESULTS COPD patients showed a lower SV/VO2 slope than control subjects, while CO response was compensated by a higher heart rate increase. COPD patients with DH experienced a reduction of SV/VO2 and CO/VO2 compared to those without DH. In COPD patients, the end-expiratory lung volume (EELV) increase was related to SV/VO2 and CO/VO2 slopes, and it was the only independent predictor of cardiac response to exercise. However, in the regression models without EELV, plasma IL-1β and high-sensitivity cardiac troponin T were also retained as independent predictors of SV/VO2 slope. CONCLUSION Dynamic hyperinflation decreases the cardiac response to exercise of COPD patients. This effect is related to systemic inflammation and myocardial stress but not with left ventricle diastolic dysfunction.
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Affiliation(s)
- Raúl Galera
- Grupo de Enfermedades Respiratorias, Servicio de Neumología, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Raquel Casitas
- Grupo de Enfermedades Respiratorias, Servicio de Neumología, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Elisabet Martínez-Cerón
- Grupo de Enfermedades Respiratorias, Servicio de Neumología, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | | | - Cristina Utrilla
- Servicio de Radiodiagnóstico, Hospital Universitario La Paz, Madrid, Spain
| | - Isabel Torres
- Servicio de Radiodiagnóstico, Hospital Universitario La Paz, Madrid, Spain
| | - Carolina Cubillos-Zapata
- Grupo de Enfermedades Respiratorias, Servicio de Neumología, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Francisco García-Río
- Grupo de Enfermedades Respiratorias, Servicio de Neumología, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain; Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain.
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Erram J, Bari M, Domingo A, Cannon DT. Pulmonary function with expiratory resistive loading in healthy volunteers. PLoS One 2021; 16:e0252916. [PMID: 34115812 PMCID: PMC8195373 DOI: 10.1371/journal.pone.0252916] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 05/25/2021] [Indexed: 11/19/2022] Open
Abstract
Expiratory flow limitation is a key characteristic in obstructive pulmonary diseases. To study abnormal lung mechanics isolated from heterogeneities of obstructive disease, we measured pulmonary function in healthy adults with expiratory loading. Thirty-seven volunteers (25±5 yr) completed spirometry and body plethysmography under control and threshold expiratory loading of 7, 11 cmH2O, and a subset at 20 cmH2O (n = 11). We analyzed the shape of the flow-volume relationship with rectangular area ratio (RAR; Ma et al., Respir Med 2010). Airway resistance was increased (p<0.0001) with 7 and 11 cmH2O loading vs control (9.20±1.02 and 11.76±1.68 vs. 2.53± 0.80 cmH2O/L/s). RAR was reduced (p = 0.0319) in loading vs control (0.45±0.07 and 0.47±0.09L vs. 0.48±0.08). FEV1 was reduced (p<0.0001) in loading vs control (3.24±0.81 and 3.23±0.80 vs. 4.04±1.05 L). FVC was reduced (p<0.0001) in loading vs control (4.11±1.01 and 4.14±1.03 vs. 5.03±1.34 L). Peak expiratory flow (PEF) was reduced (p<0.0001) in loading vs control (6.03±1.67 and 6.02±1.84 vs. 8.50±2.81 L/s). FEV1/FVC (p<0.0068) was not clinically significant and FRC (p = 0.4) was not different in loading vs control. Supra-physiologic loading at 20 cmH2O did not result in further limitation. Expiratory loading reduced FEV1, FVC, PEF, but there were no clinically meaningful differences in FEV1/FVC, FRC, or RAR. Imposed expiratory loading likely leads to high airway pressures that resist dynamic airway compression. Thus, a concave expiratory flow-volume relationship was consistently absent-a key limitation for model comparison with pulmonary function in COPD. Threshold loading may be a useful strategy to increase work of breathing or induce dynamic hyperinflation.
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Affiliation(s)
- Jyotika Erram
- School of Exercise & Nutritional Sciences, San Diego State University, San Diego, California, United States of America
| | - Monica Bari
- School of Exercise & Nutritional Sciences, San Diego State University, San Diego, California, United States of America
| | - Antoinette Domingo
- School of Exercise & Nutritional Sciences, San Diego State University, San Diego, California, United States of America
| | - Daniel T. Cannon
- School of Exercise & Nutritional Sciences, San Diego State University, San Diego, California, United States of America
- * E-mail:
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Neder JA, de Torres JP, O'Donnell DE. Recent Advances in the Physiological Assessment of Dyspneic Patients with Mild COPD. COPD 2021; 18:374-384. [PMID: 33902376 DOI: 10.1080/15412555.2021.1913110] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
There is growing recognition that a sizable fraction of COPD patients with forced expiratory volume in one second (FEV1)/forced vital capacity ratio below the lower limit of normal but preserved FEV1 reports out-of-proportion dyspnea relative to the severity of airflow limitation. Most physicians, however, assume that patients' breathlessness is unlikely to reflect the negative physiological consequences of COPD vis-à-vis FEV1 normalcy. This concise review integrates the findings of recent studies which uncovered the key pathophysiological features shared by these patients: poor pulmonary gas exchange efficiency (increased "wasted" ventilation) and gas trapping. These abnormalities are associated with two well-known causes of exertional dyspnea: heightened ventilation relative to metabolic demand and critically low inspiratory reserves, respectively. From a clinical standpoint, a low diffusion capacity associated with increased residual volume (RV) and/or RV/total lung capacity ratio might uncover these disturbances, identifying the subset of patients in whom exertional dyspnea is causally related to "mild" COPD.
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Affiliation(s)
- J Alberto Neder
- Laboratory of Clinical Exercise Physiology and Respiratory Investigation Unit, Division of Respirology, Department of Medicine, Queen's University & Kingston General Hospital, Kingston, ON, Canada
| | - Juan P de Torres
- Laboratory of Clinical Exercise Physiology and Respiratory Investigation Unit, Division of Respirology, Department of Medicine, Queen's University & Kingston General Hospital, Kingston, ON, Canada
| | - Denis E O'Donnell
- Laboratory of Clinical Exercise Physiology and Respiratory Investigation Unit, Division of Respirology, Department of Medicine, Queen's University & Kingston General Hospital, Kingston, ON, Canada
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Rotondo JC, Aquila G, Oton-Gonzalez L, Selvatici R, Rizzo P, De Mattei M, Pavasini R, Tognon M, Campo GC, Martini F. Methylation of SERPINA1 gene promoter may predict chronic obstructive pulmonary disease in patients affected by acute coronary syndrome. Clin Epigenetics 2021; 13:79. [PMID: 33858475 PMCID: PMC8048251 DOI: 10.1186/s13148-021-01066-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 04/03/2021] [Indexed: 12/16/2022] Open
Abstract
Background Diagnostic biomarkers for detecting chronic obstructive pulmonary disease (COPD) in acute coronary syndrome (ACS) patients are not available. SERPINA1, coding for the most potent circulating anti-inflammatory protein in the lung, has been found to be differentially methylated in blood cells from COPD patients. This study aimed to investigate the methylation profile of SERPINA1 in blood cells from ACS patients, with (COPD+) or without COPD (COPD−). Methods Blood samples were from 115 ACS patients, including 30 COPD+ and 85 COPD− according to lung function phenotype, obtained with spirometry. DNA treated with sodium bisulfite was PCR-amplified at SERPINA1 promoter region. Methylation analysis was carried out by sequencing the PCR products. Lymphocytes count in ACS patients was recorded at hospital admission and discharge. Results SERPINA1 was hypermethylated in 24/30 (80%) COPD+ and 48/85 (56.5%) COPD− (p < 0.05). Interestingly, at hospital discharge, lymphocytes count was higher in COPD− patients carrying SERPINA1 hypermethylated (1.98 × 103 ± 0.6 cell/µl) than in COPD− carrying SERPINA1 hypomethylated (1.7 × 103 ± 0.48 cell/µl) (p < 0.05). Conclusions SERPINA1 is hypermethylated in blood cells from COPD+ patients. COPD− carrying SERPINA1 hypermethylated and high lymphocytes count may be at risk of COPD development. Therefore, SERPINA1 hypermethylation may represent a potential biomarker for predicting COPD development in ACS patients.
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Affiliation(s)
| | - Giorgio Aquila
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | | | - Rita Selvatici
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Paola Rizzo
- Department of Translational Medicine and for Romagna, University of Ferrara, Ferrara, Italy.,Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, 70 Eliporto Street, 44121, Ferrara, Italy
| | - Monica De Mattei
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Rita Pavasini
- Cardiology Unit, Azienda Ospedaliera Universitaria Di Ferrara, Ferrara, Italy
| | - Mauro Tognon
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | | | - Fernanda Martini
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy. .,Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, 70 Eliporto Street, 44121, Ferrara, Italy.
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12
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Effects of Tiotropium/Olodaterol on Activity-Related Breathlessness, Exercise Endurance and Physical Activity in Patients with COPD: Narrative Review with Meta-/Pooled Analyses. Adv Ther 2021; 38:835-853. [PMID: 33306188 PMCID: PMC7889690 DOI: 10.1007/s12325-020-01557-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 10/29/2020] [Indexed: 01/17/2023]
Abstract
Abstract One of the most debilitating symptoms of chronic obstructive pulmonary disease (COPD) is breathlessness, which leads to avoidance of physical activities in daily living and hastens clinical deterioration. Treatment of patients with COPD with inhaled long-acting muscarinic antagonist (LAMA)/long-acting β2-agonist (LABA) combination therapy improves airflow limitation, reduces breathlessness compared with LAMA or LABA monotherapies, and improves health status and quality of life. A large clinical trial programme focusing on the effects of tiotropium/olodaterol combination therapy demonstrated that this LAMA/LABA combination improves lung function and reduces hyperinflation (assessed by serial inspiratory capacity measurements) compared with either tiotropium alone or placebo in patients with COPD. Tiotropium/olodaterol also increases exercise endurance capacity and improves patient perception of the intensity of breathlessness compared with placebo. In this narrative review, we focus on the relationship between improving symptoms during activity, the ability to remain active in daily life and how this may impact quality of life. We consider the benefits of therapy optimisation by means of dual bronchodilation with tiotropium/olodaterol, and present new data from meta-analyses/pooled analyses showing that tiotropium/olodaterol improves inspiratory capacity compared with placebo and tiotropium and improves exercise endurance time compared with placebo after 6 weeks of treatment. We also discuss the importance of taking a holistic approach to improving physical activity, including pulmonary rehabilitation and exercise programmes in parallel with bronchodilator therapy and psychological programmes to support behaviour change. Graphic Abstract ![]()
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13
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Galera R, Casitas R, Martínez-Cerón E, Rodríguez-Fraga O, Utrilla C, Torres I, Cubillos-Zapata C, García-Río F. Effect of Dynamic Hyperinflation on Cardiac Response to Exercise of Patients With Chronic Obstructive Pulmonary Disease. Arch Bronconeumol 2020. [PMID: 33127199 DOI: 10.1016/j.arbres.2020.09.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Although the major limitation to exercise performance in patients with COPD is dynamic hyperinflation (DH), little is known about its relation with cardiac response to exercise. Our objectives were to compare the exercise response of stroke volume (SV) and cardiac output (CO) between COPD patients with or without DH and control subjects, and to assess the main determinants. METHODS Fifty-seven stable COPD patients without cardiac comorbidity and 25 healthy subjects were recruited. Clinical evaluation, baseline function tests, computed tomography and echocardiography were conducted in all subjects. Patients performed consecutive incremental exercise tests with measurement of operating lung volumes and non-invasive measurement of SV, CO and oxygen uptake (VO2) by an inert gas rebreathing method. Biomarkers of systemic inflammation and oxidative stress, tissue damage/repair, cardiac involvement and airway inflammation were measured. RESULTS COPD patients showed a lower SV/VO2 slope than control subjects, while CO response was compensated by a higher heart rate increase. COPD patients with DH experienced a reduction of SV/VO2 and CO/VO2 compared to those without DH. In COPD patients, the end-expiratory lung volume (EELV) increase was related to SV/VO2 and CO/VO2 slopes, and it was the only independent predictor of cardiac response to exercise. However, in the regression models without EELV, plasma IL-1β and high-sensitivity cardiac troponin T were also retained as independent predictors of SV/VO2 slope. CONCLUSION Dynamic hyperinflation decreases the cardiac response to exercise of COPD patients. This effect is related to systemic inflammation and myocardial stress but not with left ventricle diastolic dysfunction.
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Affiliation(s)
- Raúl Galera
- Grupo de Enfermedades Respiratorias, Servicio de Neumología, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Raquel Casitas
- Grupo de Enfermedades Respiratorias, Servicio de Neumología, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Elisabet Martínez-Cerón
- Grupo de Enfermedades Respiratorias, Servicio de Neumología, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | | | - Cristina Utrilla
- Servicio de Radiodiagnóstico, Hospital Universitario La Paz, Madrid, Spain
| | - Isabel Torres
- Servicio de Radiodiagnóstico, Hospital Universitario La Paz, Madrid, Spain
| | - Carolina Cubillos-Zapata
- Grupo de Enfermedades Respiratorias, Servicio de Neumología, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Francisco García-Río
- Grupo de Enfermedades Respiratorias, Servicio de Neumología, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain; Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain.
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14
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Domnik NJ, Walsted ES, Langer D. Clinical Utility of Measuring Inspiratory Neural Drive During Cardiopulmonary Exercise Testing (CPET). Front Med (Lausanne) 2020; 7:483. [PMID: 33043023 PMCID: PMC7530180 DOI: 10.3389/fmed.2020.00483] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 07/16/2020] [Indexed: 12/18/2022] Open
Abstract
Cardiopulmonary exercise testing (CPET) has traditionally included ventilatory and metabolic measurements alongside electrocardiographic characterization; however, research increasingly acknowledges the utility of also measuring inspiratory neural drive (IND) through its surrogate measure of diaphragmatic electromyography (EMGdi). While true IND also encompasses the activation of non-diaphragmatic respiratory muscles, the current review focuses on diaphragmatic measurements, providing information about additional inspiratory muscle groups for context where appropriate. Evaluation of IND provides mechanistic insight into the origins of dyspnea and exercise limitation across pathologies; yields valuable information reflecting the integration of diverse mechanical, chemical, locomotor, and metabolic afferent signals; and can help assess the efficacy of therapeutic interventions. Further, IND measurement during the physiologic stress of exercise is uniquely poised to reveal the underpinnings of physiologic limitations masked during resting and unloaded breathing, with important information provided not only at peak exercise, but throughout exercise protocols. As our understanding of IND presentation across varying conditions continues to grow and methods for its measurement become more accessible, the translation of these principles into clinical settings is a logical next step in facilitating appropriate and nuanced management tailored to each individual's unique physiology. This review provides an overview of the current state of understanding of IND measurement during CPET: its origins, known patterns of behavior and links with dyspnea in health and major respiratory diseases, and the possibility of expanding this approach to applications beyond exercise.
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Affiliation(s)
| | - Emil S. Walsted
- Respiratory Research Unit, Bispebjerg University Hospital, Copenhagen, Denmark
| | - Daniel Langer
- Research Group for Rehabilitation in Internal Disorders, Respiratory Rehabilitation and Respiratory Division, Department of Rehabilitation Sciences, University Hospital Leuven, KU Leuven, Leuven, Belgium
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15
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Morris NR, Hill K, Walsh J, Sabapathy S. Exercise & Sports Science Australia (ESSA) position statement on exercise and chronic obstructive pulmonary disease. J Sci Med Sport 2020; 24:52-59. [PMID: 32928654 DOI: 10.1016/j.jsams.2020.08.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 08/15/2020] [Accepted: 08/17/2020] [Indexed: 12/26/2022]
Abstract
OBJECTIVES Chronic obstructive pulmonary disease (COPD) results in airflow obstruction and a marked reduction in exercise capacity and health-related quality of life (HRQoL). Affecting over 1 in four Australians aged over 75 years, COPD remains one of the major causes of disability and death in the world. To date there have been over 80 randomised controlled trials examining the role of exercise training in a range of settings for individuals with COPD. This review will synthesise existing literature and provide health practitioners with broad evidence-based guidelines for exercise-training in this growing population. DESIGN Position stand. METHODS Synthesis of randomised controlled trials of exercise training and of existing guidelines for exercise in COPD. Systematic reviews of alternative modes of exercise training will also be reviewed. RESULTS There is convincing evidence that in adults with COPD, exercise-training improves exercise capacity, decreases symptoms such as dyspnoea and fatigue, and improves HRQoL. There is emerging evidence in this population that alternative modes of exercise training such as high intensity interval training (HIIT), aquatic based therapy, tai chi and neuromuscular electrical stimulation improve exercise outcomes when compared to no exercise. CONCLUSIONS For individuals with COPD, an exercise program of aerobic and strength exercises delivered over at least an 8-week period, that engages lower and upper body skeletal muscles, will deliver significant health improvements. Programs should be individualised, take into consideration relevant co-morbid conditions and be delivered appropriately qualified health practitioners experienced in clinical exercise prescription.
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Affiliation(s)
- Norman R Morris
- School of Allied Health Sciences, Griffith University, Australia; Metro North Hospital and Health Service, The Prince Charles Hospital. Allied Health Research Collaborative, Australia; Menzies Health Institute, Griffith University, Australia; Queensland Lung Transplant Service, The Prince Charles Hospital, Australia.
| | - Kylie Hill
- School of Physiotherapy and Exercise Science, Curtin University, Australia
| | - James Walsh
- School of Allied Health Sciences, Griffith University, Australia; Queensland Lung Transplant Service, The Prince Charles Hospital, Australia
| | - Surendran Sabapathy
- School of Allied Health Sciences, Griffith University, Australia; Metro North Hospital and Health Service, The Prince Charles Hospital. Allied Health Research Collaborative, Australia; Menzies Health Institute, Griffith University, Australia
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16
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van Dijk M, Klooster K, Hartman JE, Ten Hacken NHT, Slebos DJ. Change in Dynamic Hyperinflation After Bronchoscopic Lung Volume Reduction in Patients with Emphysema. Lung 2020; 198:795-801. [PMID: 32710165 PMCID: PMC7502448 DOI: 10.1007/s00408-020-00382-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 07/14/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND PURPOSE In patients with severe emphysema, dynamic hyperinflation is superimposed on top of already existing static hyperinflation. Static hyperinflation reduces significantly after bronchoscopic lung volume reduction (BLVR). In this study, we investigated the effect of BLVR compared to standard of care (SoC) on dynamic hyperinflation. METHODS Dynamic hyperinflation was induced by a manually paced tachypnea test (MPT) and was defined by change in inspiratory capacity (IC) measured before and after MPT. Static and dynamic hyperinflation measurements were performed both at baseline and 6 months after BLVR with endobronchial valves or coils (treatment group) or SoC (control group). RESULTS Eighteen patients underwent BLVR (78% female, 57 (43-67) years, FEV1 25(18-37) %predicted, residual volume 231 (182-376) %predicted). Thirteen patients received SoC (100% female, 59 (44-74) years, FEV1 25 (19-37) %predicted, residual volume 225 (152-279) %predicted. The 6 months median change in dynamic hyperinflation in the treatment group was: + 225 ml (range - 113 to + 803) (p < 0.01) vs 0 ml (- 1067 to + 500) in the control group (p = 0.422). An increase in dynamic hyperinflation was significantly associated with a decrease in residual volume (r = - 0.439, p < 0.01). CONCLUSION Bronchoscopic lung volume reduction increases the ability for dynamic hyperinflation in patients with severe emphysema. We propose this is a consequence of improved static hyperinflation.
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Affiliation(s)
- Marlies van Dijk
- Department of Pulmonary Diseases, University Medical Center Groningen, Research Institute for Asthma and COPD Groningen, University of Groningen, Groningen, The Netherlands. .,Department of Pulmonary Diseases, AA11, University Medical Center Groningen, PO Box 30001, 9700 RB, Groningen, The Netherlands.
| | - Karin Klooster
- Department of Pulmonary Diseases, University Medical Center Groningen, Research Institute for Asthma and COPD Groningen, University of Groningen, Groningen, The Netherlands
| | - Jorine E Hartman
- Department of Pulmonary Diseases, University Medical Center Groningen, Research Institute for Asthma and COPD Groningen, University of Groningen, Groningen, The Netherlands
| | - Nick H T Ten Hacken
- Department of Pulmonary Diseases, University Medical Center Groningen, Research Institute for Asthma and COPD Groningen, University of Groningen, Groningen, The Netherlands
| | - Dirk-Jan Slebos
- Department of Pulmonary Diseases, University Medical Center Groningen, Research Institute for Asthma and COPD Groningen, University of Groningen, Groningen, The Netherlands
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17
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Cherneva RV, Denchev SV, Cherneva ZV. The link between dynamic hyperinflation, autonomic dysfunction and exercise testing parameters with masked heart failure in patients with non-severe obstructive pulmonary disease. J Basic Clin Physiol Pharmacol 2020; 32:179-188. [PMID: 32658862 DOI: 10.1515/jbcpp-2019-0311] [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: 11/04/2019] [Accepted: 02/20/2020] [Indexed: 12/20/2022]
Abstract
OBJECTIVES Autonomic dysfunction (AD) and dynamic hyperinflation (DH) have been implicated as pathophysiological mechanisms of heart failure with preserved ejection fraction (HFpEF) in chronic obstructive pulmonary disease (COPD) patients. Their association, however, remains elusive: The aims of the study were: (1) to determine the prevalence of AD and DH in non-severe COPD patients, with exertional dyspnea, without clinically overt cardio-vascular (CV) comorbidities; (2) to analyze the correlation and clinical significance between DH, AD, and maksed HFpEF. METHODS We applied CPET in 68 subjects. Echocardiography was performed before CPET and 1-2 min after peak exercise. IC manoeuvres were applied. Patients were divided into two groups: patients with and without masked HFpEF. Wilkoff method calculated the meatabolic - chronotropic relationship (MCR). Chronotropic incompetence (CI) and abnormal HR recovery (HRR) were determined. RESULTS The prevalence of CI was 77 vs. 52% in patients with/without masked HFpEF; of abnormal HRR - 98 vs. 62% respectively; of DH - 53 vs. 29%. ICdyn was associated with AD. Univariate regression showed association between masked HFpEF, ICdyn, HRR, oxygenuptake ('VO2), 'VO2 at anaerobic threshold, oxygen (O2) pulse and 'VE/'VCO2 slope. None of these parameters is an independent predictor for masked HFpEF. CONCLUSIONS DH, AD, and masked HFpEF are prevalent in non-severe COPD patients, who complain of exertional dyspnea and are free of clinically overt CV comorbidities. DH is independently associated with AD. Neither AD, nor DH and CPET are independent predictors for masked HFpEF.
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Affiliation(s)
- Radostina Vl Cherneva
- University Hospital for Respiratory Diseases "St. Sophia'', Han Presian 17, Sofia, Bulgaria
| | | | - Zheina Vl Cherneva
- Medical Institute of the Ministry of Internal Affairs, Gen Skobelev 79, Sofia, Bulgaria
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18
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Neder JA, Berton DC, Muller PT, O'Donnell DE. Incorporating Lung Diffusing Capacity for Carbon Monoxide in Clinical Decision Making in Chest Medicine. Clin Chest Med 2020; 40:285-305. [PMID: 31078210 DOI: 10.1016/j.ccm.2019.02.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Lung diffusing capacity for carbon monoxide (Dlco) remains the only noninvasive pulmonary function test to provide an integrated picture of gas exchange efficiency in human lungs. Due to its critical dependence on the accessible "alveolar" volume (Va), there remains substantial misunderstanding on the interpretation of Dlco and the diffusion coefficient (Dlco/Va ratio, Kco). This article presents the physiologic and methodologic foundations of Dlco measurement. A clinically friendly approach for Dlco interpretation that takes those caveats into consideration is outlined. The clinical scenarios in which Dlco can effectively assist the chest physician are discussed and illustrative clinical cases are presented.
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Affiliation(s)
- J Alberto Neder
- Laboratory of Clinical Exercise Physiology, Division of Respirology and Sleep Medicine, Department of Medicine, Kingston Health Science Center, Queen's University, Richardson House, 102 Stuart Street, Kingston, Ontario K7L 2V6, Canada.
| | - Danilo C Berton
- Division of Respirology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Paulo T Muller
- Division of Respirology, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Denis E O'Donnell
- Respiratory Investigation Unit, Division of Respirology and Sleep Medicine, Kingston Health Science Center & Queen's University, Kingston, Ontario, Canada
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19
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Effects of Osteopathic Manual Therapy on Hyperinflation in Patients with Chronic Obstructive Pulmonary Disease: A Randomized Cross-Over Study. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1222:17-25. [PMID: 31541364 DOI: 10.1007/5584_2019_418] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Osteopathic manual therapy (OMT) may reduce hyperinflation in patients with chronic obstructive pulmonary disease (COPD) by improving breathing mechanics. The aim of the study was to evaluate the immediate effects of OMT on hyperinflation in stable COPD patients with forced expired volume in 1 s (FEV1) <50% predicted. Nineteen COPD patients of the median age 68 (IQR 63-72) years and the median FEV1 39.8 (IQR 33.4-46.6) % predicted were enrolled into the study. For the first session, patients were randomly assigned to either OMT or sham therapy. During the second session, the two groups of patients were crossed over. Pulmonary function and dyspnea were compared before and after both procedures. Neither pulmonary function nor dyspnea differed significantly before and after OMT or sham procedures. However, 36.7% and 47.4% patients achieved the minimally important difference for residual volume (RV) reduction after both OMT and sham therapy, respectively. Responders to OMT had a greater median (IQR) baseline sense of dyspnea compared to non-responders, assessed on a visual analog scale, of 7.0 (4.5-7.0) vs. 3.0 (0.0-5.0), p = 0.040, respectively. Although OMT did not have an immediate effect on hyperinflation or dyspnea, a subgroup experienced a reduction in RV following OMT and sham therapy. Future studies are needed to identify the characteristics of responders.
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20
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Arjomandi M, Zeng S, Barjaktarevic I, Barr RG, Bleecker ER, Bowler RP, Buhr RG, Criner GJ, Comellas AP, Cooper CB, Couper DJ, Curtis JL, Dransfield MT, Han MK, Hansel NN, Hoffman EA, Kaner RJ, Kanner RE, Krishnan JA, Paine R, Peters SP, Rennard SI, Woodruff PG. Radiographic lung volumes predict progression to COPD in smokers with preserved spirometry in SPIROMICS. Eur Respir J 2019; 54:13993003.02214-2018. [PMID: 31439683 DOI: 10.1183/13993003.02214-2018] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 07/17/2019] [Indexed: 11/05/2022]
Abstract
The characteristics that predict progression to overt chronic obstructive pulmonary disease (COPD) in smokers without spirometric airflow obstruction are not clearly defined.We conducted a post hoc analysis of 849 current and former smokers (≥20 pack-years) with preserved spirometry from the Subpopulations and Intermediate Outcome Measures in COPD Study (SPIROMICS) cohort who had baseline computed tomography (CT) scans of lungs and serial spirometry. We examined whether CT-derived lung volumes representing air trapping could predict adverse respiratory outcomes and more rapid decline in spirometry to overt COPD using mixed-effect linear modelling.Among these subjects with normal forced expiratory volume in 1 s (FEV1) to forced vital capacity (FVC) ratio, CT-measured residual volume (RVCT) to total lung capacity (TLCCT) ratio varied widely, from 21% to 59%. Over 2.5±0.7 years of follow-up, subjects with higher RVCT/TLCCT had a greater differential rate of decline in FEV1/FVC; those in the upper RVCT/TLCCT tertile had a 0.66% (95% CI 0.06%-1.27%) faster rate of decline per year compared with those in the lower tertile (p=0.015) regardless of demographics, baseline spirometry, respiratory symptoms score, smoking status (former versus current) or smoking burden (pack-years). Accordingly, subjects with higher RVCT/TLCCT were more likely to develop spirometric COPD (OR 5.7 (95% CI 2.4-13.2) in upper versus lower RVCT/TLCCT tertile; p<0.001). Other CT indices of air trapping showed similar patterns of association with lung function decline; however, when all CT indices of air trapping, emphysema, and airway disease were included in the same model, only RVCT/TLCCT retained its significance.Increased air trapping based on radiographic lung volumes predicts accelerated spirometry decline and progression to COPD in smokers without obstruction.
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Affiliation(s)
- Mehrdad Arjomandi
- San Francisco Veterans Affairs Healthcare System, San Francisco, CA, USA .,Dept of Medicine, University of California, San Francisco, CA, USA
| | - Siyang Zeng
- San Francisco Veterans Affairs Healthcare System, San Francisco, CA, USA.,Dept of Medicine, University of California, San Francisco, CA, USA
| | - Igor Barjaktarevic
- Dept of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - R Graham Barr
- Columbia-Presbyterian Medical Center, New York, NY, USA
| | | | | | - Russell G Buhr
- Dept of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA.,Greater Los Angeles Veterans Affairs Healthcare System, Los Angeles, CA, USA
| | | | | | - Christopher B Cooper
- Dept of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA.,Dept of Physiology, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | | | - Jeffrey L Curtis
- Medical Service, VA Ann Arbor Healthcare System, Ann Arbor, MI, USA.,Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | | | - MeiLan K Han
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | | | - Eric A Hoffman
- Dept of Physiology, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Robert J Kaner
- Weill Cornell Weill Cornell Medical Center, New York, NY, USA
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Elbehairy AF, O'Donnell CD, Abd Elhameed A, Vincent SG, Milne KM, James MD, Webb KA, Neder JA, O’Donnell DE. Low resting diffusion capacity, dyspnea, and exercise intolerance in chronic obstructive pulmonary disease. J Appl Physiol (1985) 2019; 127:1107-1116. [DOI: 10.1152/japplphysiol.00341.2019] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The mechanisms linking reduced diffusing capacity of the lung for carbon monoxide (DlCO) to dyspnea and exercise intolerance across the chronic obstructive pulmonary disease (COPD) continuum are poorly understood. COPD progression generally involves both DlCO decline and worsening respiratory mechanics, and their relative contribution to dyspnea has not been determined. In a retrospective analysis of 300 COPD patients who completed symptom-limited incremental cardiopulmonary exercise tests, we tested the association between peak oxygen-uptake (V̇o2), DlCO, and other resting physiological measures. Then, we stratified the sample into tertiles of forced expiratory volume in 1 s (FEV1) and inspiratory capacity (IC) and compared dyspnea ratings, pulmonary gas exchange, and respiratory mechanics during exercise in groups with normal and low DlCO [i.e., <lower limit of normal (LLN)] using Global Lung Function Initiative reference values. DlCO was associated with peak V̇o2 ( P = 0.006), peak work-rate ( P = 0.005), and dyspnea/V̇o2 slope ( P < 0.001) after adjustment for other independent variables (airway obstruction and hyperinflation). Within FEV1 and IC tertiles, peak V̇o2 and work rate were lower ( P < 0.05) in low versus normal DlCO groups. Across all tertiles, low DlCO groups had higher dyspnea ratings, greater ventilatory inefficiency and arterial oxygen desaturation, and showed greater mechanical volume constraints at a lower ventilation during exercise than the normal DlCO group (all P < 0.05). After accounting for baseline resting respiratory mechanical abnormalities, DlCO<LLN was consistently associated with greater dyspnea and poorer exercise performance compared with preserved DlCO. The higher dyspnea ratings and earlier exercise termination in low DlCO groups were linked to significantly greater pulmonary gas exchange abnormalities, higher ventilatory demand, and associated accelerated dynamic mechanical constraints. NEW & NOTEWORTHY Our study demonstrated that chronic obstructive pulmonary disease patients with diffusing capacity of the lung for carbon monoxide (DlCO) less than the lower limit of normal had greater pulmonary gas exchange abnormalities, which resulted in higher ventilatory demand and greater dynamic mechanical constraints at lower ventilation during exercise. This, in turn, led to greater exertional dyspnea and exercise intolerance compared with patients with normal DlCO.
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Affiliation(s)
- Amany F. Elbehairy
- Department of Medicine and Queen’s University and Kingston Health Sciences Centre, Kingston, Ontario, Canada
- Department of Chest Diseases, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Conor D. O'Donnell
- Department of Medicine and Queen’s University and Kingston Health Sciences Centre, Kingston, Ontario, Canada
| | - Asmaa Abd Elhameed
- Department of Biomedical Informatics and Medical Statistics, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Sandra G. Vincent
- Department of Medicine and Queen’s University and Kingston Health Sciences Centre, Kingston, Ontario, Canada
| | - Kathryn M. Milne
- Department of Medicine and Queen’s University and Kingston Health Sciences Centre, Kingston, Ontario, Canada
- Clinician Investigator Program, Department of Medicine, University of British Columbia, Vancouver, Canada
| | - Matthew D. James
- Department of Medicine and Queen’s University and Kingston Health Sciences Centre, Kingston, Ontario, Canada
| | - Katherine A. Webb
- Department of Medicine and Queen’s University and Kingston Health Sciences Centre, Kingston, Ontario, Canada
| | - J. Alberto Neder
- Department of Medicine and Queen’s University and Kingston Health Sciences Centre, Kingston, Ontario, Canada
| | - Denis E. O’Donnell
- Department of Medicine and Queen’s University and Kingston Health Sciences Centre, Kingston, Ontario, Canada
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Dorneles RG, Plachi F, Gass R, Toniazzo VT, Thome P, Sanches PR, Gazzana MB, Neder JA, Berton DC. Sensory consequences of critical inspiratory constraints during exercise in pulmonary arterial hypertension. Respir Physiol Neurobiol 2019; 261:40-47. [PMID: 30630111 DOI: 10.1016/j.resp.2019.01.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 01/04/2019] [Accepted: 01/06/2019] [Indexed: 10/27/2022]
Abstract
We aimed to assess detailed ventilatory and sensory responses to exercise contrasting subjects with and without PAH. 20 non-smoking patients with PAH (37.5 ± 12.1 ys; FEV1/FVC = 0.77 ± 0.04; mPAP by heart catheterization = 50.6 ± 18.1 mmHg) and 10 matched controls performed cycling cardiopulmonary exercise test with serial assessments of dyspnea, airway occlusion pressure during the first 0.1 s (P0.1) of tidal volume and inspiratory capacity (IC). Patients showed lower spirometric variables compared to controls. Dyspnea and ventilation (VE) were significantly higher in patients for a given work rate. Dyspnea persisted more intense in patients even when expressed as a function of VE. Lower IC at rest (in non-hyperinflators; n = 10) or exercise-induced reduction in IC (in hyperinflators) predisposed patients to achieve earlier and at lower workloads a critical inspiratory reserve volume (IRV). At this point, there was a sudden rise in P0.1 and dyspnea perception. Attainment of a critical IRV at premature workloads leads to neuromechanical dissociation with an abrupt increment in exertional dyspnea.
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Affiliation(s)
- Rui Gustavo Dorneles
- Universidade Federal do Rio Grande do Sul (UFRGS) & Hospital de Clinicas de Porto Alegre (HCPA), Porto Alegre, RS, Brazil
| | - Franciele Plachi
- Universidade Federal do Rio Grande do Sul (UFRGS) & Hospital de Clinicas de Porto Alegre (HCPA), Porto Alegre, RS, Brazil
| | - Ricardo Gass
- Universidade Federal do Rio Grande do Sul (UFRGS) & Hospital de Clinicas de Porto Alegre (HCPA), Porto Alegre, RS, Brazil
| | - Vinicius Timm Toniazzo
- Universidade Federal do Rio Grande do Sul (UFRGS) & Hospital de Clinicas de Porto Alegre (HCPA), Porto Alegre, RS, Brazil
| | - Paulo Thome
- Universidade Federal do Rio Grande do Sul (UFRGS) & Hospital de Clinicas de Porto Alegre (HCPA), Porto Alegre, RS, Brazil
| | - Paulo R Sanches
- Universidade Federal do Rio Grande do Sul (UFRGS) & Hospital de Clinicas de Porto Alegre (HCPA), Porto Alegre, RS, Brazil
| | - Marcelo B Gazzana
- Universidade Federal do Rio Grande do Sul (UFRGS) & Hospital de Clinicas de Porto Alegre (HCPA), Porto Alegre, RS, Brazil
| | - J Alberto Neder
- Laboratory of Clinical Exercise Physiology, Kingston Health Science Center & Queen's University, Kingston, ON, Canada
| | - Danilo C Berton
- Universidade Federal do Rio Grande do Sul (UFRGS) & Hospital de Clinicas de Porto Alegre (HCPA), Porto Alegre, RS, Brazil; Laboratory of Clinical Exercise Physiology, Kingston Health Science Center & Queen's University, Kingston, ON, Canada.
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Singh D, Abbott-Banner K, Bengtsson T, Newman K. The short-term bronchodilator effects of the dual phosphodiesterase 3 and 4 inhibitor RPL554 in COPD. Eur Respir J 2018; 52:13993003.01074-2018. [PMID: 30166326 PMCID: PMC6214575 DOI: 10.1183/13993003.01074-2018] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 08/22/2018] [Indexed: 02/04/2023]
Abstract
We investigated the short-term bronchodilator effects of RPL554 (an inhaled dual phosphodiesterase 3 and 4 inhibitor) combined with other bronchodilators in chronic obstructive pulmonary disease patients with reversibility (>150 mL to short-acting bronchodilators). Study 1 was a six-way, placebo-controlled crossover study (n=36) with single doses of RPL554 (6 mg), salbutamol (200 µg), ipratropium (40 µg), RPL554 (6 mg)+salbutamol (200 µg), RPL554 (6 mg)+ipratropium (40 µg) or placebo. Study 2 was a three-way crossover study (n=30) of tiotropium (18 µg) combined with RPL554 (1.5 or 6 mg) or placebo for 3 days. Forced expiratory volume in 1 s (FEV1), lung volumes and specific airway conductance (sGaw) were measured. In study 1, peak FEV1 change compared with placebo was similar with RPL554, ipratropium and salbutamol (mean 223, 199 and 187 mL, respectively). The peak FEV1 was higher for RPL554+ipratropium versus ipratropium (mean difference 94 mL; p<0.0001) and RPL554+salbutamol versus salbutamol (mean difference 108 mL; p<0.0001). In study 2 (day 3), both RPL554 doses caused greater peak FEV1 effects than placebo. The average FEV1(0–12 h) increase was greater with RPL554 6 mg only versus placebo (mean difference 65 mL; p=0.0009). In both studies, lung volumes and sGaw showed greater RPL554 combination treatment effects versus monotherapy. RPL554 combined with standard bronchodilators caused additional bronchodilation and hyperinflation reduction. The dual PDE3 and PDE4 inhibitor RPL554 causes additional bronchodilation when combined with commonly used short- or long-acting bronchodilatorshttp://ow.ly/CUYi30lDcYW
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Affiliation(s)
- Dave Singh
- Medicines Evaluation Unit, University of Manchester and Manchester University NHS Foundation Trust, Manchester, UK
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24
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Difference Between Slow and Forced Vital Capacity and Its Relationship with Dynamic Hyperinflation in Patients with Chronic Obstructive Pulmonary Disease. Lung 2018; 197:9-13. [DOI: 10.1007/s00408-018-0174-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 10/22/2018] [Indexed: 11/27/2022]
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Alter P, Rabe KF, Schulz H, Vogelmeier CF, Jörres RA. Influence of body mass on predicted values of static hyperinflation in COPD. Int J Chron Obstruct Pulmon Dis 2018; 13:2551-2555. [PMID: 30197511 PMCID: PMC6112801 DOI: 10.2147/copd.s164096] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Introduction For interpretation of body plethysmographic static hyperinflation, reference values are of crucial importance. Earliest reference values have been published by the European Coal and Steel Community (ECSC) and are based on sex, body height and age as predictors. As obesity can lead to a reduction of functional residual capacity (FRC) in lung-healthy subjects, more recent approaches included body weight or body surface area. This raises the question whether these models are appropriate in patients with COPD-induced hyperinflation. Method Several FRC prediction models and their relation to body weight were analyzed in 1513 patients with stable COPD (mean [SD] age: 64.5 [8.2] years; GOLD grades 1–4: 219/722/484/88), a subset of the multicenter COPD and Systemic Consequences – Comorbidities Network cohort. Results Absolute values of FRC were inversely related to body mass index (p<0.001). Applying the ECSC equations to calculate predicted values, this pattern was maintained (p<0.001). By contrast, an inverted, ie, positive, relation occurred when using equations that include body weight or surface area (p<0.001). The present analysis confirmed the inverse relation of body mass and FRC in COPD, resulting from a restrictive ventilatory pattern by diaphragm elevation and decreased chest wall compliance in obesity. The weight influence in the prediction models, as obtained from lung-healthy controls, appears to lead to an overcorrection and consequently to an inappropriate overestimation of hyperinflation as indicated by FRC %predicted in COPD. Conclusion It is concluded that models not including body weight as predictor, like the classical ECSC equations, could be superior in the interpretation of FRC in COPD.
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Affiliation(s)
- Peter Alter
- Department of Medicine, Pulmonary and Critical Care Medicine, Philipps University of Marburg, Member of the German Center for Lung Research (DZL), Marburg, Germany,
| | - Klaus F Rabe
- LungenClinic Grosshansdorf, Member of the German Center for Lung Research (DZL), Airway Research Center North (ARCN), Grosshansdorf, Germany.,Christian-Albrechts University, Airway Research Center North (ARCN), Kiel, Germany
| | - Holger Schulz
- Helmholtz-Zentrum München, Institute of Epidemiology, German Research Center for Environmental Health, Comprehensive Pneumology Center Munich (CPC-M), Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Claus F Vogelmeier
- Department of Medicine, Pulmonary and Critical Care Medicine, Philipps University of Marburg, Member of the German Center for Lung Research (DZL), Marburg, Germany,
| | - Rudolf A Jörres
- Institute 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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26
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Zeng S, Tham A, Bos B, Jin J, Giang B, Arjomandi M. Lung volume indices predict morbidity in smokers with preserved spirometry. Thorax 2018; 74:114-124. [PMID: 30030304 DOI: 10.1136/thoraxjnl-2018-211881] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 06/19/2018] [Accepted: 06/25/2018] [Indexed: 11/03/2022]
Abstract
BACKGROUND Abnormal lung volumes that reflect air trapping are common in COPD. However, their significance in smokers with preserved spirometry (normal FEV1 to FVC ratio) is unclear. METHODS Using the Veterans Administration Informatics and Computing Infrastructure database, we identified 7479 patients at risk for COPD (ever smokers >40 years of age without restrictive lung disease) who had preserved spirometry and concomitant lung volume measurements, and examined their subsequent health records for clinical diagnoses of COPD, healthcare utilisation, follow-up spirometry and mortality. RESULTS Air trapping was prevalent, with 31% of patients having residual volume to total lung capacity ratio (RV:TLC) greater than the upper limit of normal (ULN). RV:TLC varied widely from 14% to 77% (51% to 204% of predicted) across the normal ranges of FEV1:FVC and FEV1. Patients with RV:TLC greater than the ULN were more likely to receive subsequent clinical diagnoses of COPD (HR (95% CI)=1.55 (1.42 to 1.70), p<0.001) and had higher all-cause mortality (HR (95% CI)=1.41 (1.29 to 1.54), p<0.001). They had higher rates of respiratory medication prescriptions and hospital and intensive care unit admissions. Other air trapping and static hyperinflation indices showed similar associations with health outcomes. Additionally, high-normal RV:TLC was associated with intermediate adverse health outcomes compared with low-normal and abnormal RV:TLC. Abnormal RV:TLC predicted higher likelihood of progression to spirometric COPD (OR (95% CI)=1.30 (1.03 to 1.65), p=0.027). CONCLUSION In this study of the Veterans Affairs electronic health records, air trapping was common in smokers with preserved spirometry and predicted adverse respiratory outcomes and progression to overt COPD.
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Affiliation(s)
- Siyang Zeng
- Medical Section, San Francisco Veterans Affairs Medical Center, San Francisco, California, USA.,Department of Medicine, University of California, San Francisco, California, USA
| | - Andrea Tham
- Medical Section, San Francisco Veterans Affairs Medical Center, San Francisco, California, USA.,School of Medicine, University of Southern California, Los Angeles, USA
| | - Bruce Bos
- Medical Section, San Francisco Veterans Affairs Medical Center, San Francisco, California, USA.,School of Medicine, Radboud University Medical Center, Nijmegen, Gelderland, The Netherlands
| | - Joan Jin
- Medical Section, San Francisco Veterans Affairs Medical Center, San Francisco, California, USA.,School of Pharmacy, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Brian Giang
- Medical Section, San Francisco Veterans Affairs Medical Center, San Francisco, California, USA.,Department of Medicine, University of California, San Francisco, California, USA
| | - Mehrdad Arjomandi
- Medical Section, San Francisco Veterans Affairs Medical Center, San Francisco, California, USA.,Department of Medicine, University of California, San Francisco, California, USA
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27
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Vanfleteren MJ, Koopman M, Spruit MA, Pennings HJ, Smeenk F, Pieters W, van den Bergh JJ, Michels AJ, Wouters EF, Groenen MT, Franssen FM, Vanfleteren LE. Effectiveness of Pulmonary Rehabilitation in Patients With Chronic Obstructive Pulmonary Disease With Different Degrees of Static Lung Hyperinflation. Arch Phys Med Rehabil 2018; 99:2279-2286.e3. [PMID: 29906421 DOI: 10.1016/j.apmr.2018.05.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 03/31/2018] [Accepted: 05/07/2018] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To evaluate the effect of pulmonary rehabilitation (PR) on exercise performance and quality of life in patients with chronic obstructive pulmonary disease (COPD) with different degrees of static lung hyperinflation (LH). DESIGN Retrospective cohort study. SETTING PR network. PARTICIPANTS A cohort of 1981 patients with COPD (55% men; age: 66.8±9.3y; forced expiratory volume in the first second%: 50.7±19.5; residual volume [RV]%: 163.0±49.7). INTERVENTION An interdisciplinary PR program for patients with COPD consisting of 40 sessions. MAIN OUTCOME MEASURES Participants were stratified into 5 quintiles according to baseline RV and were evaluated on the basis of pre- and post-PR 6-minute walk distance (6MWD), constant work rate test (CWRT), and Saint George's Respiratory Questionnaire (SGRQ), among other clinical parameters. RESULTS With increasing RV quintile, patients were younger, more frequently women, had lower forced expiratory volume in the first second%, lower body mass index and fat-free mass index, shorter 6MWD, shorter CWRT, and worse SGRQ scores (P<.01). All RV strata improved after PR in all 3 outcomes (P<.001). Nevertheless, higher, compared to lower RV categories, had lower ΔCWRT (P<.01) but similar Δ6MWD (P=.948) and ΔSGRQ (P=.086) after PR. CONCLUSIONS LH in COPD is related to younger age, female sex, lower body weight, worse exercise capacity and health status, but did not prevent patients from benefitting from PR. LH, however, influences walking and cycling response after PR differently.
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Affiliation(s)
- Michiel J Vanfleteren
- Department of Research and Education, Center of Expertise for Chronic Organ Failure (CIRO), Horn, the Netherlands; Department of Respiratory Medicine, Maastricht University Medical Centre (MUMC+), Maastricht, the Netherlands.
| | - Maud Koopman
- Department of Research and Education, Center of Expertise for Chronic Organ Failure (CIRO), Horn, the Netherlands
| | - Martijn A Spruit
- Department of Research and Education, Center of Expertise for Chronic Organ Failure (CIRO), Horn, the Netherlands
| | - Herman-Jan Pennings
- Department of Respiratory Medicine, St. Laurentius Hospital, Roermond, the Netherlands
| | - Frank Smeenk
- Department of Respiratory Medicine, Catharina Hospital, Eindhoven, the Netherlands
| | - Willem Pieters
- Department of Respiratory Medicine, Elkerliek Hospital, Helmond, the Netherlands
| | - Jan J van den Bergh
- Department of Respiratory Medicine, St. Jans Gasthuis, Weert, the Netherlands
| | - Arent-Jan Michels
- Department of Respiratory Medicine, St Anna Hospital, Geldrop, the Netherlands
| | - Emiel F Wouters
- Department of Research and Education, Center of Expertise for Chronic Organ Failure (CIRO), Horn, the Netherlands; Department of Respiratory Medicine, Maastricht University Medical Centre (MUMC+), Maastricht, the Netherlands
| | - Miriam T Groenen
- Department of Research and Education, Center of Expertise for Chronic Organ Failure (CIRO), Horn, the Netherlands
| | - Frits M Franssen
- Department of Research and Education, Center of Expertise for Chronic Organ Failure (CIRO), Horn, the Netherlands; Department of Respiratory Medicine, Maastricht University Medical Centre (MUMC+), Maastricht, the Netherlands
| | - Lowie E Vanfleteren
- Department of Research and Education, Center of Expertise for Chronic Organ Failure (CIRO), Horn, the Netherlands; Department of Respiratory Medicine, Maastricht University Medical Centre (MUMC+), Maastricht, the Netherlands; COPD Center, Sahlgrenska University Hospital, Göteborg, Sweden
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28
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Arjomandi M, Zeng S, Geerts J, Stiner RK, Bos B, van Koeverden I, Keene J, Elicker B, Blanc PD, Gold WM. Lung volumes identify an at-risk group in persons with prolonged secondhand tobacco smoke exposure but without overt airflow obstruction. BMJ Open Respir Res 2018; 5:e000284. [PMID: 29755755 PMCID: PMC5942438 DOI: 10.1136/bmjresp-2018-000284] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 03/19/2018] [Indexed: 12/05/2022] Open
Abstract
Introduction Exposure to secondhand smoke (SHS) is associated with occult obstructive lung disease as evident by abnormal airflow indices representing small airway disease despite having preserved spirometry (normal forced expiratory volume in 1 s-to-forced vital capacity ratio, FEV1/FVC). The significance of lung volumes that reflect air trapping in the presence of preserved spirometry is unclear. Methods To investigate whether lung volumes representing air trapping could determine susceptibility to respiratory morbidity in people with SHS exposure but without spirometric chronic obstructive pulmonary disease, we examined a cohort of 256 subjects with prolonged occupational SHS exposure and preserved spirometry. We elicited symptom prevalence by structured questionnaires, examined functional capacity (maximum oxygen uptake, VO2max) by exercise testing, and estimated associations of those outcomes with air trapping (plethysmography-measured residual volume-to-total lung capacity ratio, RV/TLC), and progressive air trapping with exertion (increase in fraction of tidal breathing that is flow limited on expiration during exercise (per cent of expiratory flow limitation, %EFL)). Results RV/TLC was within the predicted normal limits, but was highly variable spanning 22%±13% and 16%±8% across the increments of FEV1/FVC and FEV1, respectively. Respiratory complaints were prevalent (50.4%) with the most common symptom being ≥2 episodes of cough per year (44.5%). Higher RV/TLC was associated with higher OR of reporting respiratory symptoms (n=256; r2=0.03; p=0.011) and lower VO2max (n=179; r2=0.47; p=0.013), and %EFL was negatively associated with VO2max (n=32; r2=0.40; p=0.017). Conclusions In those at risk for obstruction due to SHS exposure but with preserved spirometry, higher RV/TLC identifies a subgroup with increased respiratory symptoms and lower exercise capacity.
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Affiliation(s)
- Mehrdad Arjomandi
- Division of Pulmonary, Critical Care, Allergy and Immunology, and Sleep Medicine, Department of Medicine, University of California, San Francisco, California, USA.,Division of Occupational and Environmental Medicine; Department of Medicine, University of California, San Francisco, California, USA.,Department of Medicine, San Francisco Veterans Affairs Medical Center, San Francisco, California, USA
| | - Siyang Zeng
- Division of Pulmonary, Critical Care, Allergy and Immunology, and Sleep Medicine, Department of Medicine, University of California, San Francisco, California, USA.,Department of Medicine, San Francisco Veterans Affairs Medical Center, San Francisco, California, USA
| | - Jeroen Geerts
- Radboud University Medical Center, Nijmegen, The Netherlands
| | - Rachel K Stiner
- Division of Pulmonary, Critical Care, Allergy and Immunology, and Sleep Medicine, Department of Medicine, University of California, San Francisco, California, USA.,Department of Medicine, San Francisco Veterans Affairs Medical Center, San Francisco, California, USA
| | - Bruce Bos
- Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - Jason Keene
- Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado, Denver, Colorado, USA
| | - Brett Elicker
- Department of Medicine, Cardiovascular Research Institute, University of California, San Francisco, California, USA.,Department of Radiology, University of California, San Francisco, California, USA
| | - Paul D Blanc
- Division of Pulmonary, Critical Care, Allergy and Immunology, and Sleep Medicine, Department of Medicine, University of California, San Francisco, California, USA.,Department of Medicine, San Francisco Veterans Affairs Medical Center, San Francisco, California, USA.,Division of Occupational and Environmental Medicine; Department of Medicine, University of California, San Francisco, California, USA.,Department of Medicine, Cardiovascular Research Institute, University of California, San Francisco, California, USA
| | - Warren M Gold
- Division of Pulmonary, Critical Care, Allergy and Immunology, and Sleep Medicine, Department of Medicine, University of California, San Francisco, California, USA.,Department of Medicine, Cardiovascular Research Institute, University of California, San Francisco, California, USA
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Abstract
Dynamic hyperinflation (DH) is common in chronic obstructive pulmonary disease and is associated with dyspnea and exercise intolerance. DH also has adverse cardiac effects, although the magnitude of DH and the mechanisms responsible for the hemodynamic impairment remain unclear. We hypothesized that incrementally increasing DH would systematically reduce left ventricular (LV) end-diastolic volume (LVEDV) and LV stroke volume (LVSV) because of direct ventricular interaction. Twenty-three healthy subjects (22 ± 2 yr) were exposed to varying degrees of expiratory loading to induce DH such that inspiratory capacity was decreased by 25%, 50%, 75%, and 100% (100% DH = inspiratory capacity of resting tidal volume plus inspiratory reserve volume ≈ 0.5 l). LV volumes, LV geometry, inferior vena cava collapsibility, and LV end-systolic wall stress were assessed by triplane echocardiography. 25% DH reduced LVEDV (-6 ± 5%) and LVSV (-9 ± 8%). 50% DH elicited a similar response in LVEDV (-6 ± 7%) and LVSV (-11 ± 10%) and was associated with significant septal flattening [31 ± 32% increase in the radius of septal curvature at end diastole (RSC-ED)]. 75% DH caused a larger reduction in LVEDV and LVSV (-9 ± 7% and -16 ± 10%, respectively) and RSC-ED (49 ± 70%). 100% DH caused the largest reduction in LVEDV and LVSV (-13 ± 9% and -18 ± 9%) and an increase in RSC-ED (56 ± 63%). Inferior vena cava collapsibility and LV afterload (LV end-systolic wall stress) were unchanged at all levels of DH. Modest DH (-0.6 ± 0.2 l inspiratory reserve volume) reduced LVSV because of reduced LVEDV, likely because of increased pulmonary vascular resistance. At higher levels of DH, direct ventricular interaction may be the primary cause of attenuated LVSV, as indicated by septal flattening because of a greater relative increase in right ventricular pressure and/or mediastinal constraint. NEW & NOTEWORTHY By systematically reducing inspiratory capacity during spontaneous breathing, we demonstrate that dynamic hyperinflation (DH) progressively reduces left ventricular (LV) end diastolic volume and LV stroke volume. Evidence of significant septal flattening suggests that direct ventricular interaction may be primarily responsible for the reduced LV stroke volume during DH. Hemodynamic impairment appears to occur at relatively lower levels of DH and may have important clinical implications for patients with chronic obstructive pulmonary disease.
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Affiliation(s)
- William S Cheyne
- Centre for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, University of British Columbia , Kelowna, British Columbia , Canada
| | - Jinelle C Gelinas
- Centre for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, University of British Columbia , Kelowna, British Columbia , Canada
| | - Neil D Eves
- Centre for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, University of British Columbia , Kelowna, British Columbia , Canada
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30
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Low exertional inspiratory capacity is not related to dynamic inspiratory muscle weakness in heart failure. Respir Physiol Neurobiol 2018; 254:32-35. [PMID: 29673610 DOI: 10.1016/j.resp.2018.04.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Revised: 04/11/2018] [Accepted: 04/14/2018] [Indexed: 11/23/2022]
Abstract
Reduction in inspiratory capacity (IC) during exercise has been reported in chronic heart failure (CHF). Since inspiratory muscle dysfunction may be present to a variable degree, the assumption that IC reduction during exercise represents an increase in end-expiratory lung volume must be made with caution. This interpretation is flawed if patients develop dynamic inspiratory muscle strength reduction, i.e., progressively lower esophageal (Pes) pressures as the IC maneuvers are repeated. Sixteen CHF patients and 9 age-matched controls performed an incremental exercise test with serial IC and respiratory pressure measurements. Regardless whether IC decreased or not with exercise (N = 4 and N = 12, respectively), Pes,IC remained stable. This was confirmed by similar Pes,sniff immediately upon exercise cessation (p > .05). No association was found between changes in IC and related Pes from rest to peak exercise. Owing to the lack of dynamic inspiratory muscle weakness, non-invasive indexes of lung mechanics can be reliably obtained from exercise IC in CHF.
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31
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van Geffen WH, Kerstjens HA. Static and dynamic hyperinflation during severe acute exacerbations of chronic obstructive pulmonary disease. Int J Chron Obstruct Pulmon Dis 2018; 13:1269-1277. [PMID: 29713160 PMCID: PMC5912369 DOI: 10.2147/copd.s154878] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Static hyperinflation is known to be increased during moderate acute exacerbations of chronic obstructive pulmonary disease (COPD) (AECOPD), but few data exist in patients with severe exacerbations of COPD. The role of dynamic hyperinflation during exacerbations is unclear. Methods In a prospective, observational cohort study, we recruited patients admitted to hospital for AECOPD. The following measurements were performed upon admission and again after resolution (stable state) at least 42 days later: inspiratory capacity (IC), body plethysmography, dynamic hyperinflation by metronome-paced IC measurement, health-related quality of life and dyspnea. Results Forty COPD patients were included of whom 28 attended follow-up. The IC was low at admission (2.05±0.11 L) and increased again during resolution by 15.6%±23.1% or 0.28±0.08 L (mean ± standard error of the mean, p<0.01). Testing of metronome-paced changes in IC was feasible, and it decreased by 0.74±0.06 L at admission, similarly to at stable state. Clinical COPD Questionnaire score was 3.7±0.2 at admission and improved by 1.7±0.2 points (p<0.01), and the Borg dyspnea score improved by 2.2±0.5 points from 4.4±0.4 at admission (p<0.01). Conclusion Static hyperinflation is increased during severe AECOPD requiring hospitalization compared with stable state. We could measure metronome-paced dynamic hyperinflation during severe AECOPD but found no increase.
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Affiliation(s)
- Wouter H van Geffen
- Department of Respiratory Medicine, Medical Centre Leeuwarden, Leeuwarden, the Netherlands.,Department of Pulmonary Diseases, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Huib Am Kerstjens
- Department of Pulmonary Diseases, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
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32
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Guiedem E, Ikomey GM, Nkenfou C, Walter PYE, Mesembe M, Chegou NN, Jacobs GB, Okomo Assoumou MC. Chronic obstructive pulmonary disease (COPD): neutrophils, macrophages and lymphocytes in patients with anterior tuberculosis compared to tobacco related COPD. BMC Res Notes 2018; 11:192. [PMID: 29580274 PMCID: PMC5869764 DOI: 10.1186/s13104-018-3309-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Accepted: 03/20/2018] [Indexed: 12/30/2022] Open
Abstract
OBJECTIVE The inflammatory profile of chronic obstructive pulmonary disease (COPD) related to tobacco is known in certain studies while that of the post tuberculosis form is not yet known. This study aimed to evaluate the levels of neutrophils, macrophages and lymphocytes cells in sputum of COPD patients with history of smoking or anterior tuberculosis. Enumeration of cells in samples was analyzed using standard microscopy. RESULTS We enrolled 92 participants, 46 (50%) were COPD subjects comprising 22 (47.83%) smokers and 24 (52.17%) with anterior tuberculosis while 46 (50%) healthy persons constituted the control group. The levels of neutrophils, lymphocytes and monocytes were statistically higher in COPD patients compared to the control group with p-values of 0.0001 respectively. Neutrophils levels were higher in COPD patients with history of tobacco than in COPD patients with anterior tuberculosis with a mean rate of 4.72 × 106/ml and 2.48 × 106/ml respectively (p = 0.04). The monocytes and lymphocytes levels were not statistically different between the two sub-groups of COPD patients with p-value of 0.052 and 0.91 respectively. Neutrophils are the only inflammatory cells that were significantly higher in COPD patients with history of smoking as compared to COPD patients with anterior tuberculosis.
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Affiliation(s)
- Elise Guiedem
- Center for the Study and Control of Communicable Diseases (CSCCD), Faculty of Medicine and Biomedical Sciences, University of Yaounde 1, Yaoundé, Cameroon
| | - George Mondinde Ikomey
- Center for the Study and Control of Communicable Diseases (CSCCD), Faculty of Medicine and Biomedical Sciences, University of Yaounde 1, Yaoundé, Cameroon
| | - Céline Nkenfou
- Chantal BIYA International Reference Centre for Research on HIV/AIDS Prevention and Management (CBIRC), Yaoundé, Cameroon
| | | | - Martha Mesembe
- Center for the Study and Control of Communicable Diseases (CSCCD), Faculty of Medicine and Biomedical Sciences, University of Yaounde 1, Yaoundé, Cameroon
| | - Novel Njweipi Chegou
- DST/NRF Centre of Excellence for Biomedical Tuberculosis Research and SAMRC Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, PO Box 241, Cape Town, 8000 South Africa
| | - Graeme Brendon Jacobs
- DST/NRF Centre of Excellence for Biomedical Tuberculosis Research and SAMRC Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, PO Box 241, Cape Town, 8000 South Africa
| | - Marie Claire Okomo Assoumou
- Center for the Study and Control of Communicable Diseases (CSCCD), Faculty of Medicine and Biomedical Sciences, University of Yaounde 1, Yaoundé, Cameroon
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Palamidas AF, Kemp SV, Shen M, McNulty W, Zoumot Z, Hopkinson NS, Yang GZ, Shah PL. Putative Mechanisms of Action of Endobronchial Coils. Am J Respir Crit Care Med 2017; 196:109-115. [PMID: 28665200 DOI: 10.1164/rccm.201606-1123le] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Anastasios F Palamidas
- 1 Royal Brompton & Harefield NHS Foundation Trust London, United Kingdom.,2 Imperial College London London, United Kingdom.,3 Chelsea and Westminster Hospital NHS Foundation Trust London, United Kingdom and
| | - Samuel V Kemp
- 1 Royal Brompton & Harefield NHS Foundation Trust London, United Kingdom.,2 Imperial College London London, United Kingdom
| | - Mali Shen
- 2 Imperial College London London, United Kingdom
| | - Will McNulty
- 1 Royal Brompton & Harefield NHS Foundation Trust London, United Kingdom.,2 Imperial College London London, United Kingdom.,3 Chelsea and Westminster Hospital NHS Foundation Trust London, United Kingdom and
| | - Zaid Zoumot
- 4 Cleveland Clinic Abu Dhabi Abu Dhabi, United Arab Emirates
| | - Nicholas S Hopkinson
- 1 Royal Brompton & Harefield NHS Foundation Trust London, United Kingdom.,2 Imperial College London London, United Kingdom
| | | | - Pallav L Shah
- 1 Royal Brompton & Harefield NHS Foundation Trust London, United Kingdom.,2 Imperial College London London, United Kingdom.,3 Chelsea and Westminster Hospital NHS Foundation Trust London, United Kingdom and
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Criner G. More Options for Treating Severe Hyperinflation in Advanced Emphysema. Am J Respir Crit Care Med 2017; 196:1496-1498. [DOI: 10.1164/rccm.201709-1799ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Gerard Criner
- Temple University School of MedicinePhiladelphia, Pennsylvania
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Criner G. Sorting Out the Mechanisms of Benefit of High Flow Nasal Cannula in Stable COPD. CHRONIC OBSTRUCTIVE PULMONARY DISEASES-JOURNAL OF THE COPD FOUNDATION 2017; 4:259-261. [PMID: 29354669 DOI: 10.15326/jcopdf.4.4.2017.0176] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Magnussen H, Canepa M, Zambito PE, Brusasco V, Meinertz T, Rosenkranz S. What can we learn from pulmonary function testing in heart failure? Eur J Heart Fail 2017; 19:1222-1229. [DOI: 10.1002/ejhf.946] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 06/06/2017] [Accepted: 06/26/2017] [Indexed: 12/28/2022] Open
Affiliation(s)
- Helgo Magnussen
- Pulmonary Research Institute at Lung Clinic Grosshansdorf and Airway Research Center North; Member of the German Center for Lung Research; Grosshansdorf Germany
| | - Marco Canepa
- Department of Internal Medicine and Medical Specialties; University of Genoa, San Martino Hospital; Genoa Italy
| | | | - Vito Brusasco
- Department of Internal Medicine and Medical Specialties; University of Genoa, San Martino Hospital; Genoa Italy
| | | | - Stephan Rosenkranz
- Klinik III für Innere Medizin, Herzzentrum der Universität zu Köln, Cologne, and Cologne Cardiovascular Research Center (CCRC); Heart Center at the University of Cologne; Cologne Germany
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Di Marco F, Santus P, Scichilone N, Solidoro P, Contoli M, Braido F, Corsico AG. Symptom variability and control in COPD: Advantages of dual bronchodilation therapy. Respir Med 2017; 125:49-56. [PMID: 28340862 DOI: 10.1016/j.rmed.2017.03.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 12/23/2016] [Accepted: 03/01/2017] [Indexed: 10/20/2022]
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD) is a heterogeneous disorder characterized by usually progressive development of airflow obstruction that is not fully reversible. While most patients will experience symptoms throughout the day or in the morning upon awakening, many patients do not experience their symptoms as constant but report variability in symptoms during the course of the day or over time. Symptom variability adversely affects patients' health status and increases the risk of COPD exacerbations. METHODS We examined data from the literature on symptom variability and control in patients with COPD, with focus on the use of inhaled bronchodilator therapy with long-acting muscarinic antagonist agents (LAMA) plus long-acting β2-agonists (LABA); in particular twice-daily fixed-dose combination LAMA/LABA therapy with aclidinium/formoterol. RESULTS Correct diagnosis and assessment of COPD requires comprehensive clinical and functional evaluation and consideration of individual needs to support the clinical decisions necessary for effective long-term management. Combining bronchodilators from different and complementary pharmacological classes with distinct mechanisms of action can increase the magnitude of bronchodilation as opposed to increasing the dose of a single bronchodilator. CONCLUSIONS The use of inhaled bronchodilator therapy with LAMA/LABA fixed-dose combinations in patients with stable COPD is supported by current evidence. This treatment approach provides robust effects on lung function and symptom control and may improve patients' adherence to treatment. Administration of the long-acting bronchodilators aclidinium and formoterol as twice daily fixed-dose aclidinium/formoterol 400/12 μg has the potential to control symptoms throughout the 24 h in patients with stable moderate-to-severe COPD.
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Affiliation(s)
- Fabiano Di Marco
- Respiratory Unit, Ospedale San Paolo, Department of Health Science, Università degli Studi di Milano, Via Antonio di Rudinì 8, 20142 Milan, Italy
| | - Pierachille Santus
- Università degli Studi di Milano, Department of Biomedical and Clinical Sciences, Division of Respiratory Diseases "L. Sacco" Hospital, ASST Fatebenefratelli Sacco, Via G.B. Grassi 74, 20157 Milan, Italy
| | - Nicola Scichilone
- DIBIMIS, University of Palermo, via Trabucco 180, 90146 Palermo, Italy
| | - Paolo Solidoro
- AOU Città della Salute e della Scienza di Torino, University of Turin, Molinette Hospital, Lung Diseases Unit, via Genova 3, 10126 Turin, Italy
| | - Marco Contoli
- Section of Respiratory Diseases, Department of Medical Sciences, University of Ferrara, Via Ludovico Ariosto 35, 44121 Ferrara, Italy
| | - Fulvio Braido
- Respiratory and Allergy Diseases Clinic, Department of Internal Medicine, University of Genoa, IRCCS AOU San Martino-IST, L.go R Benzi 10, 16166 Genoa, Italy
| | - Angelo Guido Corsico
- Division of Respiratory Diseases, IRCCS Policlinico San Matteo Foundation, Department of Internal Medicine and Therapeutics, University of Pavia, Viale Camillo Golgi 19, 27100 Pavia, Italy.
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Hulo S, Inamo J, Dehon A, Le Rouzic O, Edme JL, Neviere R. Chronotropic incompetence can limit exercise tolerance in COPD patients with lung hyperinflation. Int J Chron Obstruct Pulmon Dis 2016; 11:2553-2561. [PMID: 27799755 PMCID: PMC5074704 DOI: 10.2147/copd.s112490] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Purpose Metabolic-chronotropic relationship is the only concept that assesses the entire chronotropic function during exercise, as it takes into account individual fitness. To better understand interrelationships between chronotropic incompetence (CI), dynamic hyperinflation (DH) and exercise limitation among Global initiative for chronic Obstructive Lung Disease (GOLD) stages of chronic obstructive pulmonary disease (COPD) disease severity, we evaluated cardiopulmonary responses to symptom-limited cycle exercise in stable patients. Patients and methods We prospectively studied 47 COPD patients classified by GOLD stage severity. Pulmonary function tests and cardiopulmonary responses to symptom-limited incremental exercise were studied. CI was defined by regression line between percent heart rate (HR) reserve and percent oxygen uptake (V’O2) reserve, ie, chronotropic-metabolic index (CMI). DH was defined from the knot resulting from the nonlinear regressions of inspiratory capacity changes from rest to peak (dynamic inspiratory capacity (ICdyn)) with percentage of maximal HR and CMI. Results Aerobic capacity (median interquartile ranges) peak V’O2, 24.3 (23.6; 25.2), 18.5 (15.5; 21.8), 17.5 (15.4; 19.1) mL·kg−1·min−1 and CMI worsened according to GOLD severity. The optimal knot of ICdyn was equal to −0.34 L. The multivariate logistic regression showed a strong relationship between CI (outcome) and DH (odds ratio [confidence interval 95]) 25 (3.5; 191.6). Conclusion COPD patients with DH have a poor cardiovascular response to exercise, which may be attributed to CI.
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Affiliation(s)
- Sébastien Hulo
- Université Lille, CHU Lille, EA 4483, IMPact de l'Environnement Chimique sur la Santé humaine, Lille, France
| | - Jocelyn Inamo
- Département de Cardiologie - CHU Fort de France, Martinique - Faculté de Médecine - Université des Antilles, France
| | - Aurélie Dehon
- Pôle d'Anesthésie Réanimation ADRU, CHU Nîmes, Nîmes, France
| | - Olivier Le Rouzic
- Université Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, Center for Infection and Immunity of Lille, Lille, France
| | - Jean-Louis Edme
- Université Lille, CHU Lille, EA 4483, IMPact de l'Environnement Chimique sur la Santé humaine, Lille, France
| | - Remi Neviere
- Université Lille, Inserm, CHU Lille, Lille Inflammation Research International Center, Lille, France
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Cheyne WS, Williams AM, Harper MI, Eves ND. Heart-lung interaction in a model of COPD: importance of lung volume and direct ventricular interaction. Am J Physiol Heart Circ Physiol 2016; 311:H1367-H1374. [PMID: 27765746 DOI: 10.1152/ajpheart.00458.2016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Accepted: 10/03/2016] [Indexed: 01/29/2023]
Abstract
Chronic obstructive pulmonary disease (COPD) is associated with dynamic lung hyperinflation (DH), increased pulmonary vascular resistance (PVR), and large increases in negative intrathoracic pressure (nITP). The individual and interactive effect of these stressors on left ventricular (LV) filling, emptying, and geometry and the role of direct ventricular interaction (DVI) in mediating these interactions have not been fully elucidated. Twenty healthy subjects were exposed to the following stressors alone and in combination: 1) inspiratory resistive loading of -20 cmH2O (nITP), 2) expiratory resistive loading to cause dynamic hyperinflation (DH), and 3) normobaric-hypoxia to increase PVR (hPVR). LV volumes and geometry were assessed using triplane echocardiography. LV stroke volume (LVSV) was reduced during nITP by 7 ± 7% (mean ± SD; P < 0.001) through a 4 ± 5% reduction in LV end-diastolic volume (LVEDV) (P = 0.002), while DH reduced LVSV by 12 ± 13% (P = 0.001) due to a 9 ± 10% reduction in LVEDV (P < 0.001). The combination of nITP and DH (nITP+DH) caused larger reductions in LVSV (16 ± 16%, P < 0.001) and LVEDV (12 ± 10%, P < 0.001) than nITP alone (P < 0.05). The addition of hPVR to nITP+DH did not further reduce LV volumes. Significant septal flattening (indicating DVI) occurred in all conditions, with a significantly greater leftward septal shift occurring with nITP+DH than either condition alone (P < 0.05). In summary, the interaction of nITP and DH reduces LV filling through DVI. However, DH may be more detrimental to LV hemodynamics than nITP, likely due to mediastinal constraint of the heart amplifying DVI.
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Affiliation(s)
- William S Cheyne
- Centre for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, University of British Columbia, Kelowna, British Columbia, Canada
| | - Alexandra M Williams
- Centre for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, University of British Columbia, Kelowna, British Columbia, Canada
| | - Megan I Harper
- Centre for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, University of British Columbia, Kelowna, British Columbia, Canada
| | - Neil D Eves
- Centre for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, University of British Columbia, Kelowna, British Columbia, Canada
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Abstract
In recent years, thousands of publications on chronic obstructive pulmonary disease (COPD) and its related biology have entered the world literature, reflecting the increasing scientific and medical interest in this devastating condition. This article is a selective review of several important emerging themes that offer the hope of creating new classes of COPD medicines. Whereas basic science is parsing molecular pathways in COPD, its comorbidities, and asthma COPD overlap syndrome (ACOS) with unprecedented sophistication, clinical translation is disappointingly slow. The article therefore also considers solutions to current difficulties that are impeding progress in translating insights from basic science into clinically useful treatments.
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Affiliation(s)
- Gary P Anderson
- Lung Health Research Centre, Faculty of Medicine, University of Melbourne, Parkville, VIC, Australia; Department of Pharmacology and Therapeutics, Faculty of Medicine, University of Melbourne, Parkville, VIC, Australia
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O'Donnell DE, Webb KA, Harle I, Neder JA. Pharmacological management of breathlessness in COPD: recent advances and hopes for the future. Expert Rev Respir Med 2016; 10:823-34. [PMID: 27115291 DOI: 10.1080/17476348.2016.1182867] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
INTRODUCTION Activity-related breathlessness is often the dominant symptom in patients with chronic obstructive pulmonary disease (COPD) and usually persists despite optimal medical therapy. Currently, our inability to meaningfully alter the pathophysiology of the underlying disease means that we must focus our attention on relieving this distressing symptom so as to improve exercise tolerance and quality of life. AREAS COVERED The current review examines the neurobiology of breathlessness and constructs a solid physiological rationale for amelioration of this distressing symptom. We will examine the efficacy of interventions which: 1) reduce the increased central drive to breathe (opioids); 2) improve the respiratory system's ability to appropriately respond to this increased demand (bronchodilators); and 3) address the important affective dimension of breathlessness (anxiolytics). Expert commentary: Advances in our understanding of the mechanisms of activity-related breathlessness in COPD, and its measurement in the clinical domain, now set the stage for the development of effective management strategies on an individual patient basis.
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Affiliation(s)
- Denis E O'Donnell
- a Department of Medicine , Queen's University & Kingston General Hospital , Kingston , ON , Canada
| | - Katherine A Webb
- a Department of Medicine , Queen's University & Kingston General Hospital , Kingston , ON , Canada
| | - Ingrid Harle
- a Department of Medicine , Queen's University & Kingston General Hospital , Kingston , ON , Canada
| | - J Alberto Neder
- a Department of Medicine , Queen's University & Kingston General Hospital , Kingston , ON , Canada
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Charususin N, Gosselink R, McConnell A, Demeyer H, Topalovic M, Decramer M, Langer D. Inspiratory muscle training improves breathing pattern during exercise in COPD patients. Eur Respir J 2016; 47:1261-4. [PMID: 26917617 DOI: 10.1183/13993003.01574-2015] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 12/04/2015] [Indexed: 11/05/2022]
Affiliation(s)
- Noppawan Charususin
- Respiratory Rehabilitation and Respiratory Division, University Hospital Leuven, Leuven, Belgium Faculty of Kinesiology and Rehabilitation Sciences, KU Leuven, Leuven, Belgium Dept of Physical Therapy, Thammasat University, Pathumthani, Thailand
| | - Rik Gosselink
- Respiratory Rehabilitation and Respiratory Division, University Hospital Leuven, Leuven, Belgium Faculty of Kinesiology and Rehabilitation Sciences, KU Leuven, Leuven, Belgium
| | - Alison McConnell
- Dept of Human Sciences and Public Health, Faculty of Health and Social Sciences, Bournemouth University, Bournemouth, UK
| | - Heleen Demeyer
- Respiratory Rehabilitation and Respiratory Division, University Hospital Leuven, Leuven, Belgium Faculty of Kinesiology and Rehabilitation Sciences, KU Leuven, Leuven, Belgium
| | - Marko Topalovic
- Respiratory Rehabilitation and Respiratory Division, University Hospital Leuven, Leuven, Belgium
| | - Marc Decramer
- Respiratory Rehabilitation and Respiratory Division, University Hospital Leuven, Leuven, Belgium
| | - Daniel Langer
- Respiratory Rehabilitation and Respiratory Division, University Hospital Leuven, Leuven, Belgium Faculty of Kinesiology and Rehabilitation Sciences, KU Leuven, Leuven, Belgium
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Bartoli ML, Costa F, Malagrinò L, Nieri D, Antonelli S, Decusatis G, Simone CD, Santerini S, Cianchetti S, Latorre M, Vagaggini B, Paggiaro P. Sputum inflammatory cells in COPD patients classified according to GOLD 2011 guidelines. Eur Respir J 2016; 47:978-80. [PMID: 26846824 DOI: 10.1183/13993003.00784-2015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 10/29/2015] [Indexed: 11/05/2022]
Affiliation(s)
- Maria Laura Bartoli
- Cardio-Thoracic and Vascular Department, Respiratory Pathophysiology and Rehabilitation Unit, University Hospital of Pisa, Italy
| | - Francesco Costa
- Cardio-Thoracic and Vascular Department, Respiratory Pathophysiology and Rehabilitation Unit, University Hospital of Pisa, Italy
| | - Laura Malagrinò
- Cardio-Thoracic and Vascular Department, Respiratory Pathophysiology and Rehabilitation Unit, University Hospital of Pisa, Italy
| | - Dario Nieri
- Cardio-Thoracic and Vascular Department, Respiratory Pathophysiology and Rehabilitation Unit, University Hospital of Pisa, Italy
| | - Sandra Antonelli
- Cardio-Thoracic and Vascular Department, Respiratory Pathophysiology and Rehabilitation Unit, University Hospital of Pisa, Italy
| | - Giovanna Decusatis
- Cardio-Thoracic and Vascular Department, Respiratory Pathophysiology and Rehabilitation Unit, University Hospital of Pisa, Italy
| | - Claudia De Simone
- Cardio-Thoracic and Vascular Department, Respiratory Pathophysiology and Rehabilitation Unit, University Hospital of Pisa, Italy
| | - Sabrina Santerini
- Cardio-Thoracic and Vascular Department, Respiratory Pathophysiology and Rehabilitation Unit, University Hospital of Pisa, Italy
| | - Silvana Cianchetti
- Cardio-Thoracic and Vascular Department, Respiratory Pathophysiology and Rehabilitation Unit, University Hospital of Pisa, Italy
| | - Manuela Latorre
- Cardio-Thoracic and Vascular Department, Respiratory Pathophysiology and Rehabilitation Unit, University Hospital of Pisa, Italy
| | - Barbara Vagaggini
- Cardio-Thoracic and Vascular Department, Respiratory Pathophysiology and Rehabilitation Unit, University Hospital of Pisa, Italy
| | - Pierluigi Paggiaro
- Cardio-Thoracic and Vascular Department, Respiratory Pathophysiology and Rehabilitation Unit, University Hospital of Pisa, Italy
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Dubé BP, Guerder A, Morelot-Panzini C, Laveneziana P. The clinical relevance of the emphysema-hyperinflated phenotype in COPD. ACTA ACUST UNITED AC 2016. [DOI: 10.1186/s40749-015-0017-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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O’Donnell DE, Webb KA, Neder JA. Lung hyperinflation in COPD: applying physiology to clinical practice. ACTA ACUST UNITED AC 2015. [DOI: 10.1186/s40749-015-0008-8] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Matera MG, Rogliani P, Cazzola M. QVA149 (indacaterol/glycopyrronium) for the treatment of chronic obstructive pulmonary disease. Expert Opin Pharmacother 2015; 16:1079-90. [DOI: 10.1517/14656566.2015.1032247] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Oliveira MF, Zelt JTJ, Jones JH, Hirai DM, O'Donnell DE, Verges S, Neder JA. Does impaired O2 delivery during exercise accentuate central and peripheral fatigue in patients with coexistent COPD-CHF? Front Physiol 2015; 5:514. [PMID: 25610401 PMCID: PMC4285731 DOI: 10.3389/fphys.2014.00514] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 12/15/2014] [Indexed: 02/04/2023] Open
Abstract
Impairment in oxygen (O2) delivery to the central nervous system ("brain") and skeletal locomotor muscle during exercise has been associated with central and peripheral neuromuscular fatigue in healthy humans. From a clinical perspective, impaired tissue O2 transport is a key pathophysiological mechanism shared by cardiopulmonary diseases, such as chronic obstructive pulmonary disease (COPD) and chronic heart failure (CHF). In addition to arterial hypoxemic conditions in COPD, there is growing evidence that cerebral and muscle blood flow and oxygenation can be reduced during exercise in both isolated COPD and CHF. Compromised cardiac output due to impaired cardiopulmonary function/interactions and blood flow redistribution to the overloaded respiratory muscles (i.e., ↑work of breathing) may underpin these abnormalities. Unfortunately, COPD and CHF coexist in almost a third of elderly patients making these mechanisms potentially more relevant to exercise intolerance. In this context, it remains unknown whether decreased O2 delivery accentuates neuromuscular manifestations of central and peripheral fatigue in coexistent COPD-CHF. If this holds true, it is conceivable that delivering a low-density gas mixture (heliox) through non-invasive positive pressure ventilation could ameliorate cardiopulmonary function/interactions and reduce the work of breathing during exercise in these patients. The major consequence would be increased O2 delivery to the brain and active muscles with potential benefits to exercise capacity (i.e., ↓central and peripheral neuromuscular fatigue, respectively). We therefore hypothesize that patients with coexistent COPD-CHF stop exercising prematurely due to impaired central motor drive and muscle contractility as the cardiorespiratory system fails to deliver sufficient O2 to simultaneously attend the metabolic demands of the brain and the active limb muscles.
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Affiliation(s)
- Mayron F Oliveira
- Pulmonary Function and Clinical Exercise Physiology Unit (SEFICE), Respiratory Division, Department of Medicine, School of Medicine, Federal University of São Paulo (UNIFESP) São Paulo, Brazil
| | - Joel T J Zelt
- Laboratory of Clinical Exercise Physiology, Division of Respiratory and Critical Care Medicine, Department of Medicine, Queen's University Kingston, ON, Canada
| | - Joshua H Jones
- Laboratory of Clinical Exercise Physiology, Division of Respiratory and Critical Care Medicine, Department of Medicine, Queen's University Kingston, ON, Canada
| | - Daniel M Hirai
- Pulmonary Function and Clinical Exercise Physiology Unit (SEFICE), Respiratory Division, Department of Medicine, School of Medicine, Federal University of São Paulo (UNIFESP) São Paulo, Brazil ; Laboratory of Clinical Exercise Physiology, Division of Respiratory and Critical Care Medicine, Department of Medicine, Queen's University Kingston, ON, Canada
| | - Denis E O'Donnell
- Respiratory Investigation Unit, Division of Respiratory and Critical Care Medicine, Department of Medicine, Queen's University Kingston, ON, Canada
| | - Samuel Verges
- HP2 Laboratory, Grenoble Alpes University Grenoble, France
| | - J Alberto Neder
- Pulmonary Function and Clinical Exercise Physiology Unit (SEFICE), Respiratory Division, Department of Medicine, School of Medicine, Federal University of São Paulo (UNIFESP) São Paulo, Brazil ; Laboratory of Clinical Exercise Physiology, Division of Respiratory and Critical Care Medicine, Department of Medicine, Queen's University Kingston, ON, Canada
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