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Fu Y, Chapman EJ, Boland AC, Bennett MI. Evidence-based management approaches for patients with severe chronic obstructive pulmonary disease (COPD): A practice review. Palliat Med 2022; 36:770-782. [PMID: 35311415 PMCID: PMC9087316 DOI: 10.1177/02692163221079697] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Patients with chronic obstructive pulmonary disease (COPD) face limited treatment options and inadequate access to palliative care. AIM To provide a pragmatic overview of clinical guidelines and produce evidence-based recommendations for severe COPD. Interventions for which there is inconsistent evidence to support their use and areas requiring further research were identified. DESIGN Practice review of guidelines supported by scoping review methodology to examine the evidence reporting the use of guideline-recommended interventions. DATA SOURCES An electronic search was undertaken in MEDLINE, EMBASE, PsycINFO, CINAHL and The Cochrane Database of Systematic Reviews, complemented by web searching for guidelines and publications providing primary evidence (July 2021). Guidelines published within the last 5 years and evidence in the last 10 years were included. RESULTS Severe COPD should be managed using a multidisciplinary approach with a holistic assessment. For stable patients, long-acting beta-agonist/long-acting muscarinic antagonist and pulmonary rehabilitation are recommended. Low dose opioids, self-management, handheld fan and nutritional support may provide small benefits, whereas routine corticosteroids should be avoided. For COPD exacerbations, systematic corticosteroids, non-invasive ventilation and exacerbation action plans are recommended. Short-acting inhaled beta-agonists and antibiotics may be considered but pulmonary rehabilitation should be avoided during hospitalisation. Long term oxygen therapy is only recommended for patients with chronic severe hypoxaemia. Short-acting anticholinergic inhalers, nebulised opioids, oral theophylline or telehealth are not recommended. CONCLUSIONS Recommended interventions by guidelines are not always supported by high-quality evidence. Further research is required on efficacy and safety of inhaled corticosteroids, antidepressants, benzodiazepines, mucolytics, relaxation and breathing exercises.
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Affiliation(s)
- Yu Fu
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Emma J Chapman
- Academic Unit of Palliative Care, Leeds Institute of Health Sciences, University of Leeds, Leeds, UK
| | - Alison C Boland
- Department of Respiratory Medicine, St James's University Hospital, Leeds, UK
| | - Michael I Bennett
- Academic Unit of Palliative Care, Leeds Institute of Health Sciences, University of Leeds, Leeds, UK
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2
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Chun L, Li X, Feng Z, Xie Y, Li J. Role of Acupuncture in the Treatment of COPD: An Overview of Systematic Reviews. Int J Gen Med 2021; 14:1079-1092. [PMID: 33790637 PMCID: PMC8006972 DOI: 10.2147/ijgm.s300270] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Accepted: 02/12/2021] [Indexed: 01/08/2023] Open
Abstract
Background Since consistent evidence on the effectiveness of acupuncture in the treatment of chronic obstructive pulmonary disease (COPD) is not available, this overview aims to summarize and critically evaluate the methodological and evidence quality of systematic reviews (SRs) on this topic. Methods Eight electronic databases were searched to identify relevant SRs of the use of acupuncture in the treatment of COPD from inception to January 2021. Two researchers independently screened the literature, extracted the data, and cross-checked the data. The Assessing the Methodological Quality of Systematic Reviews 2 (AMSTAR 2) list was used to assess the methodological quality of SRs. The Grades of Recommendations, Assessment, Development and Evaluation (GRADE) system was used to assess the quality of evidence for the outcomes of interest. Results Nine SRs that conducted quantitative syntheses were included in this overview. The methodological quality of the SRs and the quality of evidence for the main outcome measures were generally unsatisfactory. Only 2 SRs were rated as low methodological quality by AMSTAR 2, and the remaining SRs were rated as critically low quality. The key limitations of the SRs were lack of a protocol and registration or a list of excluded studies. We did not find high-quality evidence to confirm the effectiveness of acupuncture for COPD, and the main reason was that the qualitative data synthesis relied on trials with small sample sizes and critically low quality. Conclusion Acupuncture appears to be an effective therapeutic method for COPD, but the credibility of the results is limited owing to the generally low methodological quality and evidence quality of the included SRs. Further rigorous and comprehensive studies are required to provide robust evidence and draw definitive conclusions.
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Affiliation(s)
- Liu Chun
- Longhua Hospital Shanghai University of Traditional Chinese Medicine, Shanghai, 200030, People's Republic of China
| | - Xuanlin Li
- Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, Henan, 450046, People's Republic of China
| | - Zhenzhen Feng
- Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, Henan, 450046, People's Republic of China
| | - Yang Xie
- Department of Respiratory Diseases, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, Henan, 450000, People's Republic of China
| | - Jiansheng Li
- Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, Henan, 450046, People's Republic of China.,Department of Respiratory Diseases, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, Henan, 450000, People's Republic of China
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3
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Monroe JC, Lin C, Perkins SM, Han Y, Wong BJ, Motaganahalli RL, Roseguini BT. Leg heat therapy improves perceived physical function but does not enhance walking capacity or vascular function in patients with peripheral artery disease. J Appl Physiol (1985) 2020; 129:1279-1289. [PMID: 33002377 DOI: 10.1152/japplphysiol.00277.2020] [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] [Indexed: 12/17/2022] Open
Abstract
A single session of leg heat therapy (HT) has been shown to elicit increases in leg blood flow and reduce blood pressure (BP) and the circulating levels of endothelin-1 (ET-1) in patients with symptomatic peripheral artery disease (PAD). We assessed whether 6 wk of supervised leg HT (3 times/wk) with water-circulating trousers perfused with water at 48°C improved 6-min walk distance in individuals with PAD compared with a sham treatment. Secondary outcomes included the assessment of leg vascular function, BP, quality of life, and serum ET-1 and nitrite plus nitrate (NOx) levels. Of 32 PAD patients randomized, 30 [age: 68 ± 8 yr; ankle-brachial index (ABI): 0.6 ± 0.1] completed the 3- and 6-wk follow-ups. Participants completed 98.7% of the treatment sessions. Compared with the sham treatment, exposure to HT did not improve 6-min walk distance, BP, popliteal artery reactive hyperemia, cutaneous microvascular reactivity, resting ABI, or serum NOx levels. The change from baseline to 6 wk in scores of the physical functioning subscale of the 36-item Short Form Health Survey was significantly higher in the HT group (control -6.9 ± 10 vs. HT 6.8 ± 15; 95% confidence interval: 2.5-24.3, P = 0.017). Similarly, the change in ET-1 levels after 6 wk was different between groups, with the HT group experiencing a 0.4 pg/mL decrease (95% confidence interval: -0.8-0.0, P = 0.03). These preliminary results indicate that leg HT may improve perceived physical function in symptomatic PAD patients. Additional, larger studies are needed to confirm these findings and determine the optimal treatment regimen for symptomatic PAD patients.NEW & NOTEWORTHY This is the first sham-controlled study to investigate the effects of leg heat therapy (HT) on walking performance, vascular function, and quality of life in patients with peripheral artery disease (PAD). Adherence to HT was high, and the treatment was well tolerated. Our findings revealed that HT applied with water-circulating trousers evokes a clinically meaningful increase in perceived physical function and reduces the serum concentration of the potent vasoconstrictor endothelin-1 in patients with PAD.
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Affiliation(s)
- Jacob C Monroe
- Department of Health and Kinesiology, Purdue University, West Lafayette, Indiana
| | - Chen Lin
- Department of Radiology, Mayo Clinic, Jacksonville, Florida
| | - Susan M Perkins
- Department of Biostatistics, Indiana University School of Medicine, Indianapolis, Indiana
| | - Yan Han
- Department of Biostatistics, Indiana University School of Medicine, Indianapolis, Indiana
| | - Brett J Wong
- Department of Kinesiology and Health, Georgia State University, Atlanta, Georgia
| | - Raghu L Motaganahalli
- Division of Vascular Surgery, Department of Surgery, Indiana University School of Medicine, Indianapolis, Indiana
| | - Bruno T Roseguini
- Department of Health and Kinesiology, Purdue University, West Lafayette, Indiana
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4
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Kochovska S, Fazekas B, Hensley M, Wheatley J, Allcroft P, Currow DC. A Randomized, Double-Blind, Multisite, Pilot, Placebo-Controlled Trial of Regular, Low-Dose Morphine on Outcomes of Pulmonary Rehabilitation in COPD. J Pain Symptom Manage 2019; 58:e7-e9. [PMID: 31404644 DOI: 10.1016/j.jpainsymman.2019.07.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 07/30/2019] [Indexed: 11/22/2022]
Affiliation(s)
- Slavica Kochovska
- IMPACCT, Faculty of Health, University of Technology Sydney, Ultimo, New South Wales, Australia; Australian National Palliative Clinical Studies Collaborative, Faculty of Health, University of Technology Sydney, Ultimo, New South Wales, Australia
| | - Belinda Fazekas
- IMPACCT, Faculty of Health, University of Technology Sydney, Ultimo, New South Wales, Australia; Australian National Palliative Clinical Studies Collaborative, Faculty of Health, University of Technology Sydney, Ultimo, New South Wales, Australia
| | - Michael Hensley
- University of Newcastle, John Hunter Hospital, Newcastle, Australia
| | - John Wheatley
- University of Sydney at Westmead Hospital, New South Wales, Australia; Ludwig Engel Centre for Respiratory Research, The Westmead Institute for Medical Research, New South Wales, Australia
| | - Peter Allcroft
- Australian National Palliative Clinical Studies Collaborative, Faculty of Health, University of Technology Sydney, Ultimo, New South Wales, Australia; Flinders University, Flinders Drive, Bedford Park, South Australia, Australia
| | - David C Currow
- IMPACCT, Faculty of Health, University of Technology Sydney, Ultimo, New South Wales, Australia; Australian National Palliative Clinical Studies Collaborative, Faculty of Health, University of Technology Sydney, Ultimo, New South Wales, Australia; Wolfson Palliative Care Research Centre, University of Hull, Hull, England.
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5
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Zeng GS, Chen LC, Fan HZ, Wu LL, Wu XP, Fang ZK, He X, Yu HP. The relationship between steps of 6MWT and COPD severity: a cross-sectional study. Int J Chron Obstruct Pulmon Dis 2018; 14:141-148. [PMID: 30643400 PMCID: PMC6312395 DOI: 10.2147/copd.s188994] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Background and objective The distance of 6-minute walk test (D6MWT) has been widely used in the assessment of functional status in patients with COPD, while very little attention has been paid to the role of steps of 6-minute walk test (S6MWT). The purpose of this study was to investigate the relationship between S6MWT and other physiologic parameters of COPD. Patients and methods Seventy patients with stable COPD were enrolled consecutively in this cross-sectional study. Pulmonary function tests, including spirometry, impulse oscillometry (IOS) and the single-breath diffusing capacity of the lungs for carbon monoxide (DLCO), were carried out at rest. Quality of life was assessed by health-related quality of life (HRQoL) questionnaires, including modified Medical Research Council dyspnea scale (mMRC), St George’s Respiratory Questionnaire, Chronic Obstructive Pulmonary Disease Assessment Test (CAT) and Clinical Chronic Obstructive Pulmonary Questionnaire. Both steps and distance were measured in the following 6-minute walk test (6MWT). Results Both S6MWT and D6MWT showed significant correlation with spirometry, IOS, DLCO parameters and HRQoL questionnaires score. Both pre- and post-6MWT inspiratory capacity showed significant correlation with S6MWT (ρ=0.338, P=0.004; ρ=0.359, P=0.002, respectively), whereas did not correlate with D6MWT (ρ=0.145, P=0.230; ρ=0.160, P=0.189, respectively). In stepwise multiple regression analysis, mMRC grade, age and CAT score remained as significant predictors in the final model for D6MWT (adjusted R2=0.445, P<0.01). DLCO and CAT score remained as significant predictors in the final model for S6MWT (adjusted R2=0.417, P<0.01). Conclusion S6MWT is efficient in the evaluation of functional status and quality of life in COPD and has significant correlation with various parameters indicating disease severity. Additionally, S6MWT might be better in predicting lung hyperinflation in COPD compared with D6MWT.
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Affiliation(s)
- Guan-Sheng Zeng
- Department of Pulmonary and Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China,
| | - Li-Chang Chen
- Department of Pulmonary and Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China,
| | - Hui-Zhen Fan
- Department of Pulmonary and Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China,
| | - Ling-Ling Wu
- Department of Pulmonary and Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China,
| | - Xi-Ping Wu
- Department of Pulmonary and Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China,
| | - Ze-Kui Fang
- Department of Pulmonary and Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China,
| | - Xi He
- Department of Pulmonary and Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China,
| | - Hua-Peng Yu
- Department of Pulmonary and Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China,
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6
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Payne P, Fiering S, Zava D, Gould TJ, Brown A, Hage P, Gaudet C, Crane-Godreau M. Digital Delivery of Meditative Movement Training Improved Health of Cigarette-Smoke-Exposed Subjects. Front Public Health 2018; 6:282. [PMID: 30406067 PMCID: PMC6202937 DOI: 10.3389/fpubh.2018.00282] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 09/12/2018] [Indexed: 12/11/2022] Open
Abstract
Many FA who flew prior to the ban on smoking in commercial aircraft exhibit an unusual pattern of long-term pulmonary dysfunction. This randomized controlled study tested the hypothesis that digitally delivered meditative movement (MM) training improves chronic obstructive pulmonary disease (COPD)-related symptoms in flight attendants (FA) who were exposed to second-hand cigarette smoke (SHCS) while flying. Phase I of this two-phase clinical trial was a single-arm non-randomized pilot study that developed and tested methods for MM intervention; we now report on Phase II, a randomized controlled trial comparing MM to a control group of similar FA receiving health education (HE) videos. Primary outcomes were the 6-min walk test and blood levels of high sensitivity C-reactive protein (hs-CRP). Pulmonary, cardiovascular, autonomic and affective measures were also taken. There were significant improvements in the 6-min walk test, the Multidimensional Assessment of Interoceptive Awareness (MAIA) score, and the COPD Assessment Test. Non-significant trends were observed for increased dehydroepiandrosterone sulfate (DHEAS) levels, decreased anxiety scores and reduced blood hs-CRP levels, and increased peak expiratory flow (PEF). In a Survey Monkey questionnaire, 81% of participants who completed pre and post-testing expressed mild to strong positive opinions of the study contents, delivery, or impact, while 16% expressed mild negative opinions. Over the course of the year including the study, participant adoption of the MM practices showed a significant and moderately large correlation with overall health improvement; Pearson's R = 0.62, p < 0.005. These results support the hypothesized benefits of video-based MM training for this population. No adverse effects were reported. Clinical Trial Registration:www.ClinicalTrials.gov, identifier: NCT02612389
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Affiliation(s)
- Peter Payne
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, PA, United States
| | - Steven Fiering
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, PA, United States
| | - David Zava
- ZRT Laboratory, Beaverton, OR, United States
| | - Thomas J Gould
- Department of Biobehavioral Health, Pennsylvania State University, University Park, PA, United States
| | - Anthony Brown
- Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
| | - Paul Hage
- Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
| | - Carole Gaudet
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, PA, United States
| | - Mardi Crane-Godreau
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, PA, United States
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7
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Eden MM, Tompkins J, Verheijde JL. Reliability and a correlational analysis of the 6MWT, ten-meter walk test, thirty second sit to stand, and the linear analog scale of function in patients with head and neck cancer. Physiother Theory Pract 2017; 34:202-211. [DOI: 10.1080/09593985.2017.1390803] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Melissa M. Eden
- Physical Medicine and Rehabilitation, Mayo Clinic, Phoenix, AZ, USA
| | - James Tompkins
- Physical Medicine and Rehabilitation, Mayo Clinic, Phoenix, AZ, USA
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8
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Lahart IM, Carmichael AR, Nevill AM, Kitas GD, Metsios GS. The effects of a home-based physical activity intervention on cardiorespiratory fitness in breast cancer survivors; a randomised controlled trial. J Sports Sci 2017; 36:1077-1086. [PMID: 28745131 DOI: 10.1080/02640414.2017.1356025] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The aim of this current randomised controlled trial was to evaluate the effects of a home-based physical activity (PA) intervention on cardiorespiratory fitness in breast cancer survivors. Thirty-two post-adjuvant therapy breast cancer survivors (age = 52 ± 10 years; BMI = 27.2 ± 4.4 kg∙m2) were randomised to a six-month home-based PA intervention with face-to-face and telephone PA counselling or usual care. Cardiorespiratory fitness and self-reported PA were assessed at baseline and at six-months. Participants had a mean relative V̇O2max of 25.3 ± 4.7 ml∙kg-1∙min-1, which is categorised as "poor" according to age and gender matched normative values. Magnitude-based inference analyses revealed likely at least small beneficial effects (effect sizes ≥.20) on absolute and relative V̇O2 max (d = .44 and .40, respectively), and total and moderate PA (d = .73 and .59, respectively) in the intervention compared to the usual care group. We found no likely beneficial improvements in any other outcome. Our home-based PA intervention led to likely beneficial, albeit modest, increases in cardiorespiratory fitness and self-reported PA in breast cancer survivors. This intervention has the potential for widespread implementation and adoption, which could considerably impact on post-treatment recovery in this population.
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Affiliation(s)
- Ian M Lahart
- a Faculty of Education, Health and Wellbeing, Institute of Sport , University of Wolverhampton , Walsall , UK
| | | | - Alan M Nevill
- a Faculty of Education, Health and Wellbeing, Institute of Sport , University of Wolverhampton , Walsall , UK
| | - George D Kitas
- c Department of Research and Development , Dudley Group NHS Foundation Trust, Russells Hall Hospital , Dudley , UK
| | - George S Metsios
- a Faculty of Education, Health and Wellbeing, Institute of Sport , University of Wolverhampton , Walsall , UK
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9
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Sandoz JS, Roberts MM, Cho JG, Wheatley JR. Magnitude of exercise capacity and quality of life improvement following repeat pulmonary rehabilitation in patients with COPD. Int J Chron Obstruct Pulmon Dis 2017; 12:1085-1091. [PMID: 28435241 PMCID: PMC5388229 DOI: 10.2147/copd.s131778] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Maintenance and repeated pulmonary rehabilitation programs (PRPs) for patients with COPD have attempted to prolong PRP benefits beyond 12–24 months. However, there is limited evidence as to the magnitude of benefit or the ideal interval between repeating the program under “real-world” conditions in which patients are referred based on clinical necessity. Therefore, we reviewed the effects of repeating PRP in a physician-referred cohort of patients with COPD. Methods A total of 141 individuals with COPD completed PRP twice and 35 completed PRP three times over a 12-year period. We used linear mixed-effects models to quantify the magnitude and change in 6-minute walk distance (6MWD), St George’s Respiratory Questionnaire (SGRQ), and Hospital Anxiety and Depression Scale (HADS) for each PRP. One-way analysis of variance with Tukey’s post hoc analysis compared the effects of different time intervals on 6MWD, SGRQ, and HADS between PRPs. Results Despite 39 mL/year average decrease in forced expiratory volume in 1 second, overall 6MWD improved following each PRP (PRP1=58 m, P<0.0001; PRP2=42 m, P<0.0001; PRP3=32 m, P<0.003). Mean SGRQ decreased after PRP1 (−7.0 units; P<0.001) and PRP2 (−4.9 units; P<0.0001) but not after PRP3 (−3.2 units; P=0.10). HADS decreased after PRP1 (−1.9 units; P<0.0001) and PRP2 (−1.7 units; P=0.0001) but not after PRP3 (−0.4 units; P=0.63). Conclusion In physician-referred patients who underwent repeat PRP as clinically required, there were clear benefits in functional exercise capacity following each repeat PRP, which was not affected by the time interval between PRPs. Health-related quality of life and mood improved after the first two PRPs, but not after a third.
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Affiliation(s)
- Jacqueline S Sandoz
- Respiratory Ambulatory Care Service, Western Sydney Local Health District, NSW, Australia.,Canadian Alternatives in Non-invasive Ventilation (CANVent) Program, Ottawa Hospital Rehabilitation Centre, Division of Respiratory Medicine, Ottawa Hospital, Ontario, Canada
| | - Mary M Roberts
- Respiratory Ambulatory Care Service, Western Sydney Local Health District, NSW, Australia.,Department of Respiratory and Sleep Medicine, Westmead Hospital.,Ludwig Engel Centre for Respiratory Research, Westmead Institute for Medical Research
| | - Jin-Gun Cho
- Respiratory Ambulatory Care Service, Western Sydney Local Health District, NSW, Australia.,Department of Respiratory and Sleep Medicine, Westmead Hospital.,Ludwig Engel Centre for Respiratory Research, Westmead Institute for Medical Research.,Sydney Medical School, University of Sydney, Westmead, NSW, Australia
| | - John R Wheatley
- Respiratory Ambulatory Care Service, Western Sydney Local Health District, NSW, Australia.,Department of Respiratory and Sleep Medicine, Westmead Hospital.,Ludwig Engel Centre for Respiratory Research, Westmead Institute for Medical Research.,Sydney Medical School, University of Sydney, Westmead, NSW, Australia
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10
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Payne P, Fiering S, Leiter JC, Zava DT, Crane-Godreau MA. Effectiveness of a Novel Qigong Meditative Movement Practice for Impaired Health in Flight Attendants Exposed to Second-Hand Cigarette Smoke. Front Hum Neurosci 2017; 11:67. [PMID: 28270757 PMCID: PMC5318411 DOI: 10.3389/fnhum.2017.00067] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Accepted: 02/01/2017] [Indexed: 12/12/2022] Open
Abstract
This single-arm non-randomized pilot study explores an intervention to improve the health of flight attendants (FA) exposed to second-hand cigarette smoke prior to the smoking ban on commercial airlines. This group exhibits an unusual pattern of long-term pulmonary dysfunction. We report on Phase I of a two-phase clinical trial; the second Phase will be a randomized controlled trial testing digital delivery of the intervention. Subjects were recruited in the Northeastern US; testing and intervention were administered in 4 major cities. The intervention involved 12 h of training in Meditative Movement practices. Based on recent research on the effects of nicotine on fear learning, and the influence of the autonomic nervous system on immune function, our hypothesis was that this training would improve autonomic function and thus benefit a range of health measures. Primary outcomes were the 6-min walk test and blood levels of C-reactive protein. Pulmonary, cardiovascular, autonomic, and affective measures were also taken. Fourteen participants completed the training and post-testing. There was a 53% decrease in high sensitivity C-Reactive Protein (p ≤ 0.05), a 7% reduction in systolic blood pressure (p ≤ 0.05), a 13% increase in the 6-min walk test (p ≤ 0.005), and significant positive changes in several other outcomes. These results tend to confirm the hypothesized benefits of MM training for this population, and indicate that autonomic function may be important in the etiology and treatment of their symptoms. No adverse effects were reported. This trial is registered at ClinicalTrials.gov (https://clinicaltrials.gov/ct2/show/NCT02612389/), and is supported by a grant from the Flight Attendant Medical Research Institute (FAMRI).
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Affiliation(s)
- Peter Payne
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth Lebanon, NH, USA
| | - Steven Fiering
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth Lebanon, NH, USA
| | - James C Leiter
- Department of Molecular and System Biology, Geisel School of Medicine at Dartmouth Lebanon, NH, USA
| | | | - Mardi A Crane-Godreau
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth Lebanon, NH, USA
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11
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Padilha GDA, Horta LFB, Moraes L, Braga CL, Oliveira MV, Santos CL, Ramos IP, Morales MM, Capelozzi VL, Goldenberg RCS, de Abreu MG, Pelosi P, Silva PL, Rocco PRM. Comparison between effects of pressure support and pressure-controlled ventilation on lung and diaphragmatic damage in experimental emphysema. Intensive Care Med Exp 2016; 4:35. [PMID: 27761886 PMCID: PMC5071308 DOI: 10.1186/s40635-016-0107-0] [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] [Received: 06/18/2016] [Accepted: 10/04/2016] [Indexed: 12/20/2022] Open
Abstract
Background In patients with emphysema, invasive mechanical ventilation settings should be adjusted to minimize hyperinflation while reducing respiratory effort and providing adequate gas exchange. We evaluated the impact of pressure-controlled ventilation (PCV) and pressure support ventilation (PSV) on pulmonary and diaphragmatic damage, as well as cardiac function, in experimental emphysema. Methods Emphysema was induced by intratracheal instillation of porcine pancreatic elastase in Wistar rats, once weekly for 4 weeks. Control animals received saline under the same protocol. Eight weeks after first instillation, control and emphysema rats were randomly assigned to PCV (n = 6/each) or PSV (n = 6/each) under protective tidal volume (6 ml/kg) for 4 h. Non-ventilated control and emphysema animals (n = 6/group) were used to characterize the model and for molecular biology analysis. Cardiorespiratory function, lung histology, diaphragm ultrastructure alterations, extracellular matrix organization, diaphragmatic proteolysis, and biological markers associated with pulmonary inflammation, alveolar stretch, and epithelial and endothelial cell damage were assessed. Results Emphysema animals exhibited cardiorespiratory changes that resemble human emphysema, such as increased areas of lung hyperinflation, pulmonary amphiregulin expression, and diaphragmatic injury. In emphysema animals, PSV compared to PCV yielded: no changes in gas exchange; decreased mean transpulmonary pressure (Pmean,L), ratio between inspiratory and total time (Ti/Ttot), lung hyperinflation, and amphiregulin expression in lung; increased ratio of pulmonary artery acceleration time to pulmonary artery ejection time, suggesting reduced right ventricular afterload; and increased ultrastructural damage to the diaphragm. Amphiregulin correlated with Pmean,L (r = 0.99, p < 0.0001) and hyperinflation (r = 0.70, p = 0.043), whereas Ti/Ttot correlated with hyperinflation (r = 0.81, p = 0.002) and Pmean,L (r = 0.60, p = 0.04). Conclusions In the model of elastase-induced emphysema used herein, PSV reduced lung damage and improved cardiac function when compared to PCV, but worsened diaphragmatic injury. Electronic supplementary material The online version of this article (doi:10.1186/s40635-016-0107-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Gisele de A Padilha
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Centro de Ciências da Saúde, Av. Carlos Chagas Filho, s/n, Bloco G-014, Ilha do Fundão, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Lucas F B Horta
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Centro de Ciências da Saúde, Av. Carlos Chagas Filho, s/n, Bloco G-014, Ilha do Fundão, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Lillian Moraes
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Centro de Ciências da Saúde, Av. Carlos Chagas Filho, s/n, Bloco G-014, Ilha do Fundão, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Cassia L Braga
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Centro de Ciências da Saúde, Av. Carlos Chagas Filho, s/n, Bloco G-014, Ilha do Fundão, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Milena V Oliveira
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Centro de Ciências da Saúde, Av. Carlos Chagas Filho, s/n, Bloco G-014, Ilha do Fundão, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Cíntia L Santos
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Centro de Ciências da Saúde, Av. Carlos Chagas Filho, s/n, Bloco G-014, Ilha do Fundão, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Isalira P Ramos
- Laboratory of Molecular and Cellular Cardiology, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil.,National Center for Structural Biology and Bio-imaging, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Marcelo M Morales
- Laboratory of Cellular and Molecular Physiology, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Vera Luiza Capelozzi
- Department of Pathology, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Regina C S Goldenberg
- Laboratory of Molecular and Cellular Cardiology, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Marcelo Gama de Abreu
- Pulmonary Engineering Group, Department of Anesthesiology and Intensive Care Therapy, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Paolo Pelosi
- Department of Surgical Sciences and Integrated Diagnostics, IRCCS AOU San Martino-IST, University of Genoa, Genoa, Italy
| | - Pedro L Silva
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Centro de Ciências da Saúde, Av. Carlos Chagas Filho, s/n, Bloco G-014, Ilha do Fundão, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Patricia R M Rocco
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Centro de Ciências da Saúde, Av. Carlos Chagas Filho, s/n, Bloco G-014, Ilha do Fundão, Rio de Janeiro, RJ, 21941-902, Brazil.
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Abstract
BACKGROUND Lung volume reduction surgery (LVRS) performed to treat patients with severe diffuse emphysema was reintroduced in the nineties. Lung volume reduction surgery aims to resect damaged emphysematous lung tissue, thereby increasing elastic properties of the lung. This treatment is hypothesised to improve long-term daily functioning and quality of life, although it may be costly and may be associated with risks of morbidity and mortality. Ten years have passed since the last version of this review was prepared, prompting us to perform an update. OBJECTIVES The objective of this review was to gather all available evidence from randomised controlled trials comparing the effectiveness of lung volume reduction surgery (LVRS) versus non-surgical standard therapy in improving health outcomes for patients with severe diffuse emphysema. Secondary objectives included determining which subgroup of patients benefit from LVRS and for which patients LVRS is contraindicated, to establish the postoperative complications of LVRS and its morbidity and mortality, to determine which surgical approaches for LVRS are most effective and to calculate the cost-effectiveness of LVRS. SEARCH METHODS We identified RCTs by using the Cochrane Airways Group Chronic Obstructive Pulmonary Disease (COPD) register, in addition to the online clinical trials registers. Searches are current to April 2016. SELECTION CRITERIA We included RCTs that studied the safety and efficacy of LVRS in participants with diffuse emphysema. We excluded studies that investigated giant or bullous emphysema. DATA COLLECTION AND ANALYSIS Two independent review authors assessed trials for inclusion and extracted data. When possible, we combined data from more than one study in a meta-analysis using RevMan 5 software. MAIN RESULTS We identified two new studies (89 participants) in this updated review. A total of 11 studies (1760 participants) met the entry criteria of the review, one of which accounted for 68% of recruited participants. The quality of evidence ranged from low to moderate owing to an unclear risk of bias across many studies, lack of blinding and low participant numbers for some outcomes. Eight of the studies compared LVRS versus standard medical care, one compared two closure techniques (stapling vs laser ablation), one looked at the effect of buttressing the staple line on the effectiveness of LVRS and one compared traditional 'resectional' LVRS with a non-resectional surgical approach. Participants completed a mandatory course of pulmonary rehabilitation/physical training before the procedure commenced. Short-term mortality was higher for LVRS (odds ratio (OR) 6.16, 95% confidence interval (CI) 3.22 to 11.79; 1489 participants; five studies; moderate-quality evidence) than for control, but long-term mortality favoured LVRS (OR 0.76, 95% CI 0.61 to 0.95; 1280 participants; two studies; moderate-quality evidence). Participants identified post hoc as being at high risk of death from surgery were those with particularly impaired lung function, poor diffusing capacity and/or homogenous emphysema. Participants with upper lobe-predominant emphysema and low baseline exercise capacity showed the most favourable outcomes related to mortality, as investigators reported no significant differences in early mortality between participants treated with LVRS and those in the control group (OR 0.87, 95% CI 0.23 to 3.29; 290 participants; one study), as well as significantly lower mortality at the end of follow-up for LVRS compared with control (OR 0.45, 95% CI 0.26 to 0.78; 290 participants; one study). Trials in this review furthermore provided evidence of low to moderate quality showing that improvements in lung function parameters other than forced expiratory volume in one second (FEV1), quality of life and exercise capacity were more likely with LVRS than with usual follow-up. Adverse events were more common with LVRS than with control, specifically the occurrence of (persistent) air leaks, pulmonary morbidity (e.g. pneumonia) and cardiovascular morbidity. Although LVRS leads to an increase in quality-adjusted life-years (QALYs), the procedure is relatively costly overall. AUTHORS' CONCLUSIONS Lung volume reduction surgery, an effective treatment for selected patients with severe emphysema, may lead to better health status and lung function outcomes, specifically for patients who have upper lobe-predominant emphysema with low exercise capacity, but the procedure is associated with risks of early mortality and adverse events.
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Affiliation(s)
| | | | - Leong Ung Tiong
- The Queen Elizabeth HospitalDepartment of SurgeryAdelaideAustralia
| | - Brian J Smith
- The University of AdelaideSchool of MedicineAdelaideAustralia
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Mirdamadi M, Rahimi B, Safavi E, Abtahi H, Peiman S. Correlation of cardiopulmonary exercise testing parameters with quality of life in stable COPD patients. J Thorac Dis 2016; 8:2138-45. [PMID: 27621870 DOI: 10.21037/jtd.2016.07.07] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND The precise head to head relationships between Cardio-pulmonary exercise testing (CPET) parameters and patients' daily symptoms/activities and the disease social/emotional impact are less well defined. In this study, the correlation of COPD daily symptoms and quality of life [assessed by St. George's Respiratory Questionnaire (SGRQ)] and COPD severity index (BODE-index) with CPET parameters were investigated. METHODS Symptom-limited CPET was performed in 37 consecutive COPD (GOLD I-III) subjects during non-exacerbation phase. The SGRQ was also completed by each patient. RESULTS SGRQ-score correlated negatively with FEV1 (r=-0.49, P<0.01), predicted maximal work-rate (%WR-max) (r=-0.44, P<0.01), V'O2/WR (r=-0.52, P<0.01) and breathing reserve (r=-0.50, P<0.01). However it did not correlate with Peak-V'O2% predicted (r=-0.27, P=0.10). In 20 (54.1%) subjects in which leg fatigue was the main cause for stopping the test, Peak-V'O2, %WR-max, HR-Reserve and Breathing reserve were higher (P=0.04, <0.01, 0.04 and <0.01 respectively) than the others. There was also a significant correlation between BODE-index and ∆VO2/∆WR (r=-0.64, P<0.001) and breathing-reserve (r=-0.38, P=0.018). CONCLUSIONS The observed relationships between CPET parameter and daily subjective complaints in COPD were not strong. Those who discontinued the CPET because of leg fatigue were in the earlier stages of COPD. Significant negative correlation between ∆VO2/∆WR and BODE-index suggests that along with COPD progression, regardless of negative past history, other comorbidities such as cardiac/musculoskeletal problems should be sought.
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Affiliation(s)
- Mahsa Mirdamadi
- Thoracic Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Besharat Rahimi
- Thoracic Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Enayat Safavi
- Thoracic Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Hamidreza Abtahi
- Thoracic Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Soheil Peiman
- Thoracic Research Center, Tehran University of Medical Sciences, Tehran, Iran;; Department of Internal Medicine, Tehran University of Medical Sciences, Tehran, Iran
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Russo D, Simonelli C, Paneroni M, Saleri M, Piroddi IMG, Cardinale F, Vitacca M, Nicolini A. ¿Cuál es el nivel óptimo de presión espiratoria positiva (PEP) capaz de mejorar la tolerancia a la deambulación de los pacientes con enfermedad pulmonar obstructiva cronica (EPOC) grave? Arch Bronconeumol 2016; 52:354-60. [DOI: 10.1016/j.arbres.2015.11.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 11/14/2015] [Accepted: 11/19/2015] [Indexed: 10/22/2022]
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Liu Y, Li H, Ding N, Wang N, Wen D. Functional Status Assessment of Patients With COPD: A Systematic Review of Performance-Based Measures and Patient-Reported Measures. Medicine (Baltimore) 2016; 95:e3672. [PMID: 27196472 PMCID: PMC4902414 DOI: 10.1097/md.0000000000003672] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Presently, there is no recommendation on how to assess functional status of chronic obstructive pulmonary disease (COPD) patients. This study aimed to summarize and systematically evaluate these measures.Studies on measures of COPD patients' functional status published before the end of January 2015 were included using a search filters in PubMed and Web of Science, screening reference lists of all included studies, and cross-checking against some relevant reviews. After title, abstract, and main text screening, the remaining was appraised using the Consensus-based Standards for the Selection of Health Measurement Instruments (COSMIN) 4-point checklist. All measures from these studies were rated according to best-evidence synthesis and the best-rated measures were selected.A total of 6447 records were found and 102 studies were reviewed, suggesting 44 performance-based measures and 14 patient-reported measures. The majority of the studies focused on internal consistency, reliability, and hypothesis testing, but only 21% of them employed good or excellent methodology. Their common weaknesses include lack of checks for unidimensionality, inadequate sample sizes, no prior hypotheses, and improper methods. On average, patient-reported measures perform better than performance-based measures. The best-rated patient-reported measures are functional performance inventory (FPI), functional performance inventory short form (FPI-SF), living with COPD questionnaire (LCOPD), COPD activity rating scale (CARS), University of Cincinnati dyspnea questionnaire (UCDQ), shortness of breath with daily activities (SOBDA), and short-form pulmonary functional status scale (PFSS-11), and the best-rated performance-based measures are exercise testing: 6-minute walk test (6MWT), endurance treadmill test, and usual 4-meter gait speed (usual 4MGS).Further research is needed to evaluate the reliability and validity of performance-based measures since present studies failed to provide convincing evidence. FPI, FPI-SF, LCOPD, CARS, UCDQ, SOBDA, PFSS-11, 6MWT, endurance treadmill test, and usual 4MGS performed well and are preferable to assess functional status of COPD patients.
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Affiliation(s)
- Yang Liu
- From the School of Public Health (YL, HL, DW); The Research Centre for Medical Education (ND), China Medical University, Shenyang; and School of Public Health (NW), Dalian Medical University, Dalian, Liaoning, China
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Payne P, Zava D, Fiering S, Crane-Godreau M. Meditative Movement as a Treatment for Pulmonary Dysfunction in Flight Attendants Exposed to Second-Hand Cigarette Smoke: Study Protocol for a Randomized Trial. Front Psychiatry 2016; 7:38. [PMID: 27047398 PMCID: PMC4801846 DOI: 10.3389/fpsyt.2016.00038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 02/29/2016] [Indexed: 12/03/2022] Open
Abstract
A study protocol is presented for the investigation of meditative movement (MM) as a treatment for pulmonary dysfunction in flight attendants (FA) who were exposed to second-hand cigarette smoke while flying before the smoking ban. The study will have three parts, some of which will run concurrently. The first is a data gathering and screening phase, which will gather data on pulmonary and other aspects of the health of FA, and will also serve to screen participants for the other phases. Second is an exercise selection phase, in which a variety of MM exercises will be taught, over a 16-week period, to a cohort of 20 FA. A subset of these exercises will be selected on the basis of participant feedback on effectiveness and compliance. Third is a 52-week randomized controlled trial to evaluate the effectiveness of a digitally delivered form of the previously selected exercises on a group of 20 FA, as compared with an attention control group. Outcome measures to be used in all three parts of the study include the 6-min walk test as a primary measure, as well as a range of biomarkers, tests, and questionnaires documenting hormonal, cardio-respiratory, autonomic, and affective state. This study is registered at ClinicalTrials.gov. Identifier: NCT02612389.
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Affiliation(s)
- Peter Payne
- Microbiology and Immunology, Geisel School of Medicine at Dartmouth , Hanover, NH , USA
| | | | - Steven Fiering
- Microbiology and Immunology, Geisel School of Medicine at Dartmouth , Hanover, NH , USA
| | - Mardi Crane-Godreau
- Microbiology and Immunology, Geisel School of Medicine at Dartmouth , Hanover, NH , USA
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Hiatt WR, Rogers RK, Brass EP. The Treadmill Is a Better Functional Test Than the 6-Minute Walk Test in Therapeutic Trials of Patients With Peripheral Artery Disease. Circulation 2014; 130:69-78. [PMID: 24982118 DOI: 10.1161/circulationaha.113.007003] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- William R Hiatt
- From the University of Colorado School of Medicine, Department of Medicine, Division of Cardiology and CPC Clinical Research, Aurora (W.R.H., R.K.R.); and Harbor-UCLA Centers for Clinical Pharmacology, Torrance, CA (E.P.B.).
| | - R Kevin Rogers
- From the University of Colorado School of Medicine, Department of Medicine, Division of Cardiology and CPC Clinical Research, Aurora (W.R.H., R.K.R.); and Harbor-UCLA Centers for Clinical Pharmacology, Torrance, CA (E.P.B.)
| | - Eric P Brass
- From the University of Colorado School of Medicine, Department of Medicine, Division of Cardiology and CPC Clinical Research, Aurora (W.R.H., R.K.R.); and Harbor-UCLA Centers for Clinical Pharmacology, Torrance, CA (E.P.B.)
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Weir NA, Brown AW, Shlobin OA, Smith MA, Reffett T, Battle E, Ahmad S, Nathan SD. The Influence of Alternative Instruction on 6-Min Walk Test Distance. Chest 2013; 144:1900-1905. [DOI: 10.1378/chest.13-0287] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Nicolini A, Merliak F, Barlascini C. Use of positive expiratory pressure during six minute walk test: results in patients with moderate to severe chronic obstructive pulmonary disease. Multidiscip Respir Med 2013; 8:19. [PMID: 23497658 PMCID: PMC3637106 DOI: 10.1186/2049-6958-8-19] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2012] [Accepted: 01/17/2013] [Indexed: 11/20/2022] Open
Abstract
Background The six-minute walk test (6MWT) is widely used because it is both simple and reliable as a measure of exercise capacity. Individuals with chronic obstructive pulmonary disease (COPD) usually show a limited capacity to perform exercise. Methods Our study is a prospective, randomized controlled trial which uses the 6MWT in one hundred consecutive in and out- patients with moderate to severe COPD to assess the benefit of a simple positive expiratory pressure (PEP) device. PEP device consisted of a PEP valve 5 cmH2O connected to 1-meter tube and a mouthpiece. All the enrolled patients performed a 6MWT before randomization. The following day PEP group patients performed the 6MWT using PEP device. Control group patients performed the 6MWT without this device. The primary outcome was the difference in distance (meters) walked. Results Functional capacity assessed by the distance covered during 6MWT improved in the PEP group more than in the control group. The difference was statistically significant (p < 0.001).Oxygen saturation improved to a statistically significant level during 6MWT (p < 0.01). Heart rate was also reduced (p < 0.03). Conclusions There are few studies demonstrating that PEP devices enhance exercise capacity in COPD patients. Our results has been obtained using only a low positive expiratory pressure (5 cmH2O). In our opinion the strength of this study is the simplicity and the lower cost when compared to other devices and approaches. The study was registered as Chi CTR-ORC-12002173 at http://www.chictr.org.
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Affiliation(s)
- Antonello Nicolini
- Respiratory Diseases Unit,Hospital of Sestri Levante, Via Terzi 43-16039, SestriLevante, Italy.
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