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Sikora M, Jastrzębski D, Pilzak K, Osiadło G, Ziora D, Żebrowska A. Determinants of daily physical activity limitation in patients with idiopathic pulmonary fibrosis. Respir Physiol Neurobiol 2023; 316:104139. [PMID: 37579930 DOI: 10.1016/j.resp.2023.104139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 08/09/2023] [Accepted: 08/11/2023] [Indexed: 08/16/2023]
Abstract
The purpose of the study was to determine the level of physical fitness assessed based on the physiological parameters and intensity of daily physical activity (PA) of patients with idiopathic pulmonary fibrosis (IPF). Additionally, we aimed to determine the intensity and duration of exercise that would bring beneficial modifications in the cardio-respiratory system of the patients with IPF. Eighteen patients with IPF (61.7 ± 4.3 years) and fifteen healthy volunteers performed a graded exercise test to exhaustion on a treadmill (Bruce protocol). Spirometry, dyspnea (mMRC, Borg scale) and fatigue (FAS) were measured. Total daily PA (kcal/day, MET) was monitored for seven days. The linear regression of PA (kcal/day) vs. peak oxygen uptake (%pred. peakVO2) was used to determine the intensity of daily PA that should be used in the rehabilitation of the patients with IPF. The average energy expenditure of daily PA of patients with IPF was 147.9 ± 86.4 kcal/day and it was significantly lower compared to healthy individuals. The linear regression indicated that the predicted energy expenditure of daily PA (PAEE) is 280.0 kcal/day, estimated based on VO2peak 100%pred. Therefore, the patients should add about 30 min of exercise of the intensity of 4.5 ± 0.2 kcal (calculated at the anaerobic threshold) or about 3700 steps/day to their daily PA. Diffusion for carbon monoxide and physiological variables of aerobic capacity seem to be the most important determinants of PA limitation in patients with IPF. The method of estimating PAEE should be used to plan training loads in IPF rehabilitation.
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Affiliation(s)
- Marcin Sikora
- Institute of Sport Science The Jerzy Kukuczka Academy of Physical Education, 72A Mikolowska Street, 40-065 Katowice, Poland.
| | - Dariusz Jastrzębski
- Department of Lung Diseases and Tuberculosis, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 41-800 Zabrze, Poland
| | - Katarzyna Pilzak
- Department of Physiological and Medical Sciences, The Jerzy Kukuczka Academy of Physical Education, 72A Mikolowska Street, 40-065 Katowice, Poland
| | - Grażyna Osiadło
- Department of Physiotherapy in Internal Diseases, The Jerzy Kukuczka Academy of Physical Education, 72A Mikolowska Street, 40-065 Katowice, Poland
| | - Dariusz Ziora
- Department of Lung Diseases and Tuberculosis, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 41-800 Zabrze, Poland
| | - Aleksandra Żebrowska
- Institute of Sport Science The Jerzy Kukuczka Academy of Physical Education, 72A Mikolowska Street, 40-065 Katowice, Poland
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Sikora M, Jastrzębski D, Pilzak K, Ziora D, Hall B, Żebrowska A. Impact of physical functional capacity on quality of life in patients with interstitial lung diseases. Respir Physiol Neurobiol 2023; 313:104064. [PMID: 37076026 DOI: 10.1016/j.resp.2023.104064] [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: 02/09/2023] [Revised: 04/05/2023] [Accepted: 04/16/2023] [Indexed: 04/21/2023]
Abstract
This study aimed to investigate the physical functioning predictors for health-related quality of life (HRQL) decline in patients with idiopathic interstitial fibrosis (IPF), sarcoidosis and other interstitial lung disease (ILD). The study enrolled 52 patients with ILD and 16 healthy individuals. Participants' HRQL was assessed using the 36-item Short-Form Health Survey questionnaire. Spirometry, physical performance, and daily physical activity (PA) were monitored. Patients with IPF showed significantly lower PA compared to patients with other ILD (p =0.002)and sarcoidosis (p =0.01). The type of disease aetiology had no significant effect on aerobic capacity, HRQL and fatigue. Patients with ILD showed significant greater fatigue, lower physical functioning and greater physical aspects scores compared to the control group (F=6.0; p=0.018; F=12.64; p=0.001, respectively). A significant positive correlation was observed between 6-minute walking distance (6MWD) and the physical domain of HRQL (r=0.35, p=0.012) and PA and the physical aspects of HRQL (r=0.37, p=0.007). This study revealed that the key predictors for HRQL decline were lower lung function, lower PA and physical performance.
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Affiliation(s)
- Marcin Sikora
- Institute of Sport Science The Jerzy Kukuczka Academy of Physical Education, 72A Mikolowska Street, 40-065 Katowice, Poland.
| | - Dariusz Jastrzębski
- Department of Lung Diseases and Tuberculosis, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 41-800 Zabrze, Poland
| | - Katarzyna Pilzak
- Department of Physiological and Medical Sciences, The Jerzy Kukuczka Academy of Physical Education, 72A Mikolowska Street, 40-065 Katowice, Poland
| | - Dariusz Ziora
- Department of Lung Diseases and Tuberculosis, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 41-800 Zabrze, Poland
| | - Barbara Hall
- School of Biological Sciences, Division of Infection, Immunity and Respiratory Medicine University of Manchester, United Kondon
| | - Aleksandra Żebrowska
- Institute of Sport Science The Jerzy Kukuczka Academy of Physical Education, 72A Mikolowska Street, 40-065 Katowice, Poland
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3
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Donnelly RP, Smyth AE, Mullan C, Riley MS, Nicholls DP. Responses to exercise in systemic sclerosis-associated interstitial lung disease. Clin Physiol Funct Imaging 2023. [PMID: 36660849 DOI: 10.1111/cpf.12813] [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: 06/20/2022] [Revised: 12/14/2022] [Accepted: 01/16/2023] [Indexed: 01/21/2023]
Abstract
INTRODUCTION Pulmonary complications in systemic sclerosis (SSc) significantly increase morbidity and mortality. Our aim was to determine the factors limiting exercise capacity in SSc patients with and without interstitial lung disease (ILD), and to identify and quantify abnormalities during exercise that might assist in clinical assessment of this complication. METHODS Fifteen patients with SSc and ILD (SSc-ILD) were compared with 10 patients with SSc without ILD and 9 age- and sex-matched normal volunteers. Subjects performed symptom-limited incremental treadmill exercise with online measurement of respiratory gas exchange, arterial blood gas sampling and measurement of neurohormones in venous blood. RESULTS Patients with SSc-ILD had lower exercise capacity than SSc patients without ILD or normal subjects (peak oxygen consumption (PV̇O2 ) (17.1 [4.2] vs. 22.0 [4.7] and 23.0 [5.4] ml kg-1 min-1 , respectively, mean [SD], p < 0.01 ANOVA), but PV̇O2 did not correlate with static pulmonary function measurements. Ventilatory equivalent for CO2 (V̇E/V̇CO2 ; nadir) was higher in SSc-ILD patients than the other two groups (36.6 [8.0] vs. 29.9 [4.4] and 30.0 [2.5], p < 0.005) as were peak exercise dead-space tidal volume ratio (0.44 [0.06] vs. 0.26 [0.09] and 0.26 [0.05], p < 0.001) and peak exercise alveolar-arterial difference (28.9 [16.9] vs. 18.8 [14.0] and 11.5 [6.9] mmHg, p < 0.05). Atrial natriuretic peptide was elevated in both SSc patient groups. CONCLUSIONS SSc-ILD results in lower exercise capacity than SSc without ILD, and abnormalities of gas exchange are seen. The possible use of cardiopulmonary exercise testing to identify disease and quantify impairment in SSc-ILD merits further study.
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Affiliation(s)
| | - Anita E Smyth
- Department of Rheumatology, Ulster Hospital, Dundonald, Northern Ireland
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Tomlinson OW, Markham L, Wollerton RL, Knight BA, Duckworth A, Gibbons MA, Scotton CJ, Williams CA. Validity and repeatability of cardiopulmonary exercise testing in interstitial lung disease. BMC Pulm Med 2022; 22:485. [PMID: 36550475 PMCID: PMC9784077 DOI: 10.1186/s12890-022-02289-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Cardiopulmonary exercise testing (CPET), and its primary outcome of peak oxygen uptake (VO2peak), are acknowledged as biomarkers in the diagnostic and prognostic management of interstitial lung disease (ILD). However, the validity and repeatability of CPET in those with ILD has yet to be fully characterised, and this study fills this evidence gap. METHODS Twenty-six people with ILD were recruited, and 21 successfully completed three CPETs. Of these, 17 completed two valid CPETs within a 3-month window, and 11 completed two valid CPETs within a 6-month window. Technical standards from the European Respiratory Society established validity, and repeatability was determined using mean change, intraclass correlation coefficient and typical error. RESULTS Every participant (100%) who successfully exercised to volitional exhaustion produced a maximal, and therefore valid, CPET. Approximately 20% of participants presented with a plateau in VO2, the primary criteria for establishing a maximal effort. The majority of participants otherwise presented with secondary criteria of respiratory exchange ratios in excess of 1.05, and maximal heart rates in excess of their predicted values. Repeatability analyses identified that the typical error (expressed as percent of coefficient of variation) was 20% over 3-months in those reaching volitional exhaustion. CONCLUSION This work has, for the first time, fully characterised how patients with ILD respond to CPET in terms of primary and secondary verification criteria, and generated novel repeatability data that will prove useful in the assessment of disease progression, and future evaluation of therapeutic regimens where VO2peak is used as an outcome measure.
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Affiliation(s)
- Owen W. Tomlinson
- grid.8391.30000 0004 1936 8024Department of Public Health and Sports Sciences, Faculty of Health and Life Sciences, University of Exeter, Heavitree Road, Exeter, EX1 2LU UK ,Academic Department of Respiratory Medicine, Royal Devon University Healthcare NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW UK ,grid.8391.30000 0004 1936 8024Department of Clinical and Biomedical Science, Faculty of Health and Life Sciences, University of Exeter, Heavitree Road, Exeter, EX1 2LU UK
| | - Laura Markham
- Academic Department of Respiratory Medicine, Royal Devon University Healthcare NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW UK ,grid.8391.30000 0004 1936 8024Department of Clinical and Biomedical Science, Faculty of Health and Life Sciences, University of Exeter, Heavitree Road, Exeter, EX1 2LU UK
| | - Rebecca L. Wollerton
- Academic Department of Respiratory Medicine, Royal Devon University Healthcare NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW UK ,grid.8391.30000 0004 1936 8024Department of Clinical and Biomedical Science, Faculty of Health and Life Sciences, University of Exeter, Heavitree Road, Exeter, EX1 2LU UK
| | - Bridget A. Knight
- grid.8391.30000 0004 1936 8024Department of Clinical and Biomedical Science, Faculty of Health and Life Sciences, University of Exeter, Heavitree Road, Exeter, EX1 2LU UK ,grid.477603.1NIHR Exeter Clinical Research Facility, Royal Devon University Healthcare NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW UK
| | - Anna Duckworth
- grid.8391.30000 0004 1936 8024Department of Clinical and Biomedical Science, Faculty of Health and Life Sciences, University of Exeter, Heavitree Road, Exeter, EX1 2LU UK
| | - Michael A. Gibbons
- Academic Department of Respiratory Medicine, Royal Devon University Healthcare NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW UK ,grid.8391.30000 0004 1936 8024Department of Clinical and Biomedical Science, Faculty of Health and Life Sciences, University of Exeter, Heavitree Road, Exeter, EX1 2LU UK
| | - Chris J. Scotton
- grid.8391.30000 0004 1936 8024Department of Clinical and Biomedical Science, Faculty of Health and Life Sciences, University of Exeter, Heavitree Road, Exeter, EX1 2LU UK
| | - Craig A. Williams
- grid.8391.30000 0004 1936 8024Department of Public Health and Sports Sciences, Faculty of Health and Life Sciences, University of Exeter, Heavitree Road, Exeter, EX1 2LU UK ,Academic Department of Respiratory Medicine, Royal Devon University Healthcare NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW UK
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Rocha V, Paixão C, Marques A. Physical activity, exercise capacity and mortality risk in people with interstitial lung disease: A systematic review and meta-analysis. J Sci Med Sport 2022; 25:903-910. [DOI: 10.1016/j.jsams.2022.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 09/22/2022] [Accepted: 10/05/2022] [Indexed: 11/06/2022]
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Gillis C, Martinez MC, Mina DS. Tailoring prehabilitation to address the multifactorial nature of functional capacity for surgery. J Hum Nutr Diet 2022; 36:395-405. [PMID: 35716131 DOI: 10.1111/jhn.13050] [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: 06/07/2022] [Indexed: 11/30/2022]
Abstract
Mounting evidence suggests that recovery begins before the surgical incision. The pre-surgery phase of recovery - the preparation for optimal surgical recovery - can be reinforced with prehabilitation. Prehabilitation is the approach of enhancing the functional capacity of the individual to enable them to withstand a stressful event. With this narrative review, we apply the Wilson & Cleary conceptual model of patient outcomes to specify the complex and integrative relationship of health factors that limit functional capacity before surgery. To have the greatest impact on patient outcomes, prehabilitation programs require individualized and coordinated care from medical, nutritional, psychosocial, and exercise services. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Chelsia Gillis
- School of Human Nutrition, McGill University.,Anesthesia Department, McGill University
| | | | - Daniel Santa Mina
- Faculty of Kinesiology and Physical Education, University of Toronto.,Department of Anesthesia and Pain Management, University Health Network
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Gille T, Laveneziana P. Cardiopulmonary exercise testing in interstitial lung diseases and the value of ventilatory efficiency. Eur Respir Rev 2021; 30:30/162/200355. [PMID: 34853093 DOI: 10.1183/16000617.0355-2020] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 05/26/2021] [Indexed: 12/27/2022] Open
Abstract
Interstitial lung diseases (ILDs) are diverse parenchymal pulmonary disorders, primarily characterised by alveolar and interstitial inflammation and/or fibrosis, and sharing pathophysiological similarities. Thus, patients generally harbour common respiratory symptoms, lung function abnormalities and modified exercise adaptation. The most usual and disabling complaint is exertional dyspnoea, frequently responsible for premature exercise interruption. Cardiopulmonary exercise testing (CPET) is increasingly used for the clinical assessment of patients with ILD. This is because exercise performance or dyspnoea on exertion cannot reliably be predicted by resting pulmonary function tests. CPET, therefore, provides an accurate evaluation of functional capacity on an individual basis. CPET can unmask anomalies in the integrated functions of the respiratory, cardiovascular, metabolic, peripheral muscle and neurosensory systems in ILDs. CPET uniquely provides an evaluation of all above aspects and can help clinicians shape ILD patient management. Preliminary evidence suggests that CPET may also generate valuable prognostic information in ILDs and can be used to shed light on the presence of associated pulmonary hypertension. This review aims to provide comprehensive and updated evidence concerning the clinical utility of CPET in ILD patients, with particular focus on the physiological and clinical value of ventilatory efficiency (V˙E/V˙CO2 ).
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Affiliation(s)
- Thomas Gille
- Université Sorbonne Paris Nord (USPN), INSERM, UMR 1272 Hypoxia & the Lung, UFR SMBH Léonard de Vinci, Bobigny, France .,Assistance Publique - Hôpitaux de Paris (AP-HP), Groupe Hospitalo-Universitaire Paris-Seine-Saint-Denis (GHUPSSD), Hôpital Avicenne, Service de Physiologie et Explorations Fonctionnelles du Département Médico-Universitaire NARVAL, Bobigny, France
| | - Pierantonio Laveneziana
- Sorbonne Université, INSERM, UMRS1158 Neurophysiologie Respiratoire Expérimentale et Clinique, Paris, France.,Assistance Publique - Hôpitaux de Paris (AP-HP), Groupe Hospitalier Universitaire APHP-Sorbonne Université, sites Pitié-Salpêtrière, Saint-Antoine et Tenon, Service des Explorations Fonctionnelles de la Respiration, de l'Exercice et de la Dyspnée (Département R3S), Paris, France
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8
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Mendes RG, Castello-Simões V, Trimer R, Garcia-Araújo AS, Gonçalves Da Silva AL, Dixit S, Di Lorenzo VAP, Archiza B, Borghi-Silva A. Exercise-Based Pulmonary Rehabilitation for Interstitial Lung Diseases: A Review of Components, Prescription, Efficacy, and Safety. FRONTIERS IN REHABILITATION SCIENCES 2021; 2:744102. [PMID: 36188788 PMCID: PMC9397914 DOI: 10.3389/fresc.2021.744102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 10/21/2021] [Indexed: 11/13/2022]
Abstract
Interstitial lung diseases (ILDs) comprise a heterogeneous group of disorders (such as idiopathic pulmonary fibrosis, sarcoidosis, asbestosis, and pneumonitis) characterized by lung parenchymal impairment, inflammation, and fibrosis. The shortness of breath (i.e., dyspnea) is a hallmark and disabling symptom of ILDs. Patients with ILDs may also exhibit skeletal muscle dysfunction, oxygen desaturation, abnormal respiratory patterns, pulmonary hypertension, and decreased cardiac function, contributing to exercise intolerance and limitation of day-to-day activities. Pulmonary rehabilitation (PR) including physical exercise is an evidence-based approach to benefit functional capacity, dyspnea, and quality of life in ILD patients. However, despite recent advances and similarities with other lung diseases, the field of PR for patients with ILD requires further evidence. This mini-review aims to explore the exercise-based PR delivered around the world and evidence supporting prescription modes, considering type, intensity, and frequency components, as well as efficacy and safety of exercise training in ILDs. This review will be able to strengthen the rationale for exercise training recommendations as a core component of the PR for ILD patients.
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Affiliation(s)
- Renata G. Mendes
- Cardiopulmonary Physiotherapy Laboratory, Department of Physiotherapy, Federal University of Sao Carlos (UFSCar), Sao Carlos, Brazil
- *Correspondence: Renata G. Mendes
| | - Viviane Castello-Simões
- Cardiopulmonary Physiotherapy Laboratory, Department of Physiotherapy, Federal University of Sao Carlos (UFSCar), Sao Carlos, Brazil
| | - Renata Trimer
- Cardiorespiratory Rehabilitation Laboratory, Health Sciences Department, University of Santa Cruz do Sul, Santa Cruz do Sul, Brazil
| | - Adriana S. Garcia-Araújo
- Cardiopulmonary Physiotherapy Laboratory, Department of Physiotherapy, Federal University of Sao Carlos (UFSCar), Sao Carlos, Brazil
| | - Andrea Lucia Gonçalves Da Silva
- Cardiorespiratory Rehabilitation Laboratory, Health Sciences Department, University of Santa Cruz do Sul, Santa Cruz do Sul, Brazil
| | - Snehil Dixit
- Department of Medical Rehabilitation Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Valéria Amorim Pires Di Lorenzo
- Laboratory of Spirometry and Respiratory Physiotherapy, Department of Physiotherapy, Federal University of Sao Carlos (UFSCar), Sao Carlos, Brazil
| | - Bruno Archiza
- Cardiopulmonary Physiotherapy Laboratory, Department of Physiotherapy, Federal University of Sao Carlos (UFSCar), Sao Carlos, Brazil
| | - Audrey Borghi-Silva
- Cardiopulmonary Physiotherapy Laboratory, Department of Physiotherapy, Federal University of Sao Carlos (UFSCar), Sao Carlos, Brazil
- Audrey Borghi-Silva
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Harada J, Nagata K, Morimoto T, Iwata K, Matsunashi A, Sato Y, Tachikawa R, Ishikawa A, Tomii K. Effect of high-flow nasal cannula oxygen therapy on exercise tolerance in patients with idiopathic pulmonary fibrosis: A randomized crossover trial. Respirology 2021; 27:144-151. [PMID: 34729862 DOI: 10.1111/resp.14176] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 10/13/2021] [Accepted: 10/19/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND AND OBJECTIVE Exercise capacity in idiopathic pulmonary fibrosis (IPF) is limited by exercise-induced hypoxaemia. This study aimed to examine the effect of high-flow nasal cannula oxygen therapy (HFNC) on exercise tolerance in patients with IPF. METHODS We conducted a single-centre, open-label, randomized crossover trial to compare HFNC and Venturi mask (VM) therapy in terms of exercise tolerance. Patients underwent constant-load symptom-limited exercise testing at 80% peak work rate with HFNC or a VM in a randomized order. The settings were 60 L/min and a 50% fraction of inspired oxygen (FiO2 ) for HFNC and 12 L/min and 50% FiO2 for VM. The primary outcome was endurance time, and the secondary outcomes were heart rate (HR), percutaneous oxygen saturation (SpO2 ), dyspnoea and leg fatigue, as determined by the modified Borg Scale at the isotime and endpoint, and the level of comfort while using the devices. RESULTS Twenty-four participants (75.0% men; age, median [interquartile range]: 77.5 [68.8-83.0] years) were enrolled. Compared with VM, HFNC significantly improved the endurance time (647.5 s [454.0-1014.8] vs. 577.5 s [338.0-861.5]), minimum SpO2 (96.0% [95.0-98.0] vs. 94.0% [92.8-96.0]) and leg fatigue at the isotime (3.0 [1.6-4.0] vs. 5.0 [3.0-6.3]) and endpoint (4.0 [2.8-5.0] vs. 5.0 [3.8-6.3]). Differences in maximum HR, dyspnoea at the isotime and endpoint and comfort were non-significant between HFNC and VM therapy. CONCLUSION HFNC increased exercise tolerance in patients with stable IPF experiencing exercise-induced hypoxaemia.
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Affiliation(s)
- Jumpei Harada
- Department of Rehabilitation, Kobe City Medical Center General Hospital, Kobe, Japan.,Department of Public Health, Kobe University Graduate School of Health Sciences, Kobe, Japan
| | - Kazuma Nagata
- Department of Respiratory Medicine, Kobe City Medical Center General Hospital, Kobe, Japan
| | - Takeshi Morimoto
- Department of Clinical Research Center, Kobe City Medical Center General Hospital, Kobe, Japan.,Department of Clinical Epidemiology, Hyogo College of Medicine, Nishinomiya, Japan
| | - Kentaro Iwata
- Department of Rehabilitation, Kobe City Medical Center General Hospital, Kobe, Japan.,Department of Public Health, Kobe University Graduate School of Health Sciences, Kobe, Japan
| | - Atsushi Matsunashi
- Department of Respiratory Medicine, Kobe City Medical Center General Hospital, Kobe, Japan
| | - Yuki Sato
- Department of Respiratory Medicine, Kobe City Medical Center General Hospital, Kobe, Japan
| | - Ryo Tachikawa
- Department of Respiratory Medicine, Kobe City Medical Center General Hospital, Kobe, Japan
| | - Akira Ishikawa
- Department of Public Health, Kobe University Graduate School of Health Sciences, Kobe, Japan
| | - Keisuke Tomii
- Department of Respiratory Medicine, Kobe City Medical Center General Hospital, Kobe, Japan
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10
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Gandhi SA, Cohen RA, Blanc PD, Go LHT. Early radiographic pneumoconiosis is associated with impaired exercise gas exchange among coal miners with normal resting spirometry. Am J Ind Med 2021; 64:453-461. [PMID: 33768567 DOI: 10.1002/ajim.23247] [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: 11/05/2020] [Revised: 01/21/2021] [Accepted: 02/22/2021] [Indexed: 11/10/2022]
Abstract
RATIONALE We sought to determine if radiographic pneumoconiosis predicts abnormal gas exchange during exercise in coal mine workers with preserved resting lung function. METHODS We analyzed data from former coal miners seen between 2006 and 2014 in a single clinic specializing in black lung evaluations. We limited the analysis to those with normal resting spirometry and an A-a gradient at peak exercise ≥10 mmHg. We used multivariable logistic regression to estimate predictors of A-a gradient widened to >150% of the reference value. We focused on chest radiographs consistent with pneumoconiosis, taking into account higher silica exposure mining activities and years underground, and adjusting for cigarette smoking, obesity, and coronary artery disease. RESULTS Of 5507 miners, we analyzed data for 742 subjects with normal spirometry and all key clinical variables available, of whom 372 (50.1%) had radiographic evidence of pneumoconiosis. All but 21 had small opacity profusion of less than 2/1. The median A-a gradient at peak exercise was 108% of reference value (interquartile range, 81%-141%). In the multivariable analysis, radiographic pneumoconiosis was associated with increased odds of widened A-a gradient (odds ratio [OR], 2.47; 95% confidence interval [CI], 1.7-3.7). Limited to 660 subjects with normal diffusing capacity for carbon monoxide, the odds were similarly increased (OR, 3.20; 95% CI, 1.5-3.6). DISCUSSION Among coal miners with preserved resting lung function, radiographic evidence of early pneumoconiosis more than doubled the odds of abnormal exercise physiology. Impairment in pneumoconiosis occurs in early disease and may only be evident on exercise testing.
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Affiliation(s)
- Sheiphali A. Gandhi
- Department of Medicine, Division of Occupational and Environmental Medicine University of California San Francisco San Francisco California USA
| | - Robert A. Cohen
- Environmental and Occupational Health Sciences, School of Public Health University of Illinois at Chicago Chicago Illinois USA
- Division of Pulmonary and Critical Care Medicine Northwestern University Feinberg School of Medicine Chicago Illinois USA
| | - Paul D. Blanc
- Department of Medicine, Division of Occupational and Environmental Medicine University of California San Francisco San Francisco California USA
| | - Leonard H. T. Go
- Environmental and Occupational Health Sciences, School of Public Health University of Illinois at Chicago Chicago Illinois USA
- Division of Pulmonary and Critical Care Medicine Northwestern University Feinberg School of Medicine Chicago Illinois USA
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11
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Davis R, Dixon C, Millar AB, Maskell NA, Barratt SL. A role for cardiopulmonary exercise testing in detecting physiological changes underlying health status in Idiopathic pulmonary fibrosis: a feasibility study. BMC Pulm Med 2021; 21:147. [PMID: 33952224 PMCID: PMC8097115 DOI: 10.1186/s12890-021-01520-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 04/12/2021] [Indexed: 01/11/2023] Open
Abstract
Introduction There is limited data available on the use of CPET as a predictive tool for disease outcomes in the setting of IPF. We investigated the feasibility of undertaking CPET and the relationship between CPET and quality of life measurements in a well-defined population of mild and moderate IPF patients. Methods A prospective, single-centre observational study. Results Thirty-two IPF patients (mild n = 23, moderate n = 9) participated in the study, n = 13 mild patients attended for repeat CPET testing at 12 months. At baseline, total K-BILD scores and total IPF-PROM scores significantly correlated with 6MWT distance, but not with baseline FVC % predicted, TLco % predicted, baseline or minimum SpO2. VO2 peak/kg at AT positively correlated with total scores, breathlessness/activity and chest domains of the K-BILD questionnaire (p < 0.05). VO2 peak significantly correlated with total IPF PROM scores and wellbeing domains (p < 0.05), with a trend towards statistical significance for total IPF-PROM and VO2 peak/kg at anaerobic threshold (p = 0.06). There was a statistically significant reduction in FVC% predicted at 12 months follow up, although the mean absolute decline was < 10% (p < 0.05). During this period VO2 peak significantly reduced (21.6 ml/kg/min ± 2.9 vs 19.1 ± 2.8; p = 0.017), with corresponding reductions in total K-BILD and breathlessness/activity domains that exceeded the MCID for responsiveness. Lower baseline VO2 peak/kg at anaerobic threshold correlated with greater declines in total K-BILD scores (r = − 0.62, 0.024) at 12 months. Whilst baseline FVC% predicted or TLco % predicted did not predict change in health status, Conclusion We have shown that it is feasible to undertake CPET in patients with mild to moderate IPF. CPET measures of VO2 peak correlated with both baseline and change in K-BILD measurements at 1 year, despite relatively stable standard lung function (declines of < 10% in FVC), suggesting its potential sensitivity to detect physiological changes underlying health status. Supplementary Information The online version contains supplementary material available at 10.1186/s12890-021-01520-8.
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Affiliation(s)
- R Davis
- Academic Respiratory Unit, School of Clinical Sciences, Southmead Hospital, University of Bristol, Learning and Research Building, Bristol, BS10 5NB, UK
| | - C Dixon
- Bristol Interstitial Lung Disease Service, North Bristol NHS Trust, Bristol, UK
| | - A B Millar
- Academic Respiratory Unit, School of Clinical Sciences, Southmead Hospital, University of Bristol, Learning and Research Building, Bristol, BS10 5NB, UK.,Bristol Interstitial Lung Disease Service, North Bristol NHS Trust, Bristol, UK
| | - N A Maskell
- Bristol Interstitial Lung Disease Service, North Bristol NHS Trust, Bristol, UK
| | - S L Barratt
- Academic Respiratory Unit, School of Clinical Sciences, Southmead Hospital, University of Bristol, Learning and Research Building, Bristol, BS10 5NB, UK. .,Bristol Interstitial Lung Disease Service, North Bristol NHS Trust, Bristol, UK.
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12
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Tomlinson O, Duckworth A, Markham L, Wollerton R, Knight B, Spiers A, Gibbons M, Williams C, Scotton C. Feasibility of cardiopulmonary exercise testing in interstitial lung disease: the PETFIB study. BMJ Open Respir Res 2021; 8:8/1/e000793. [PMID: 33926958 PMCID: PMC8094359 DOI: 10.1136/bmjresp-2020-000793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 03/02/2021] [Accepted: 03/13/2021] [Indexed: 11/24/2022] Open
Abstract
Introduction Cardiopulmonary exercise testing (CPET) provides a series of biomarkers, such as peak oxygen uptake, which could assess the development of disease status in interstitial lung disease (ILD). However, despite use in research and clinical settings, the feasibility of CPET in this patient group has yet to be established. Methods Twenty-six patients with ILD (19 male) were recruited to this study. Following screening for contraindications to maximal exercise, participants underwent an incremental CPET to volitional exhaustion. Feasibility of CPET was assessed by the implementation, practicality, acceptability and demand, thus providing clinical-driven and patient-driven information on this testing procedure. Results Of the 26 recruited participants, 24 successfully completed at least one CPET, with 67/78 prospective tests being completed. Contraindications included hypertension, low resting oxygen saturation and recent pulmonary embolism. Of the CPETs undertaken, 63% successfully reached volitional exhaustion, with 31% being terminated early by clinicians due to excessive desaturation. Quantitative and qualitative feedback from participants revealed a positive experience of CPET and desire for it to be included as a future monitoring tool. Conclusion CPET is feasible in patients with ILD. Identification of common clinical contraindications, and understanding of patient perspectives will allow for effective design of future studies utilising CPET as a monitoring procedure.
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Affiliation(s)
- Owen Tomlinson
- Sport and Health Science, University of Exeter, Exeter, UK.,Academic Department of Respiratory Medicine, Royal Devon & Exeter NHS Foundation Trust, Exeter, UK
| | - Anna Duckworth
- Academic Department of Respiratory Medicine, Royal Devon & Exeter NHS Foundation Trust, Exeter, UK.,Institute of Biomedical & Clinical Science, College of Medicine & Health, University of Exeter, Exeter, UK
| | - Laura Markham
- Academic Department of Respiratory Medicine, Royal Devon & Exeter NHS Foundation Trust, Exeter, UK.,Institute of Biomedical & Clinical Science, College of Medicine & Health, University of Exeter, Exeter, UK
| | - Rebecca Wollerton
- Academic Department of Respiratory Medicine, Royal Devon & Exeter NHS Foundation Trust, Exeter, UK.,Institute of Biomedical & Clinical Science, College of Medicine & Health, University of Exeter, Exeter, UK
| | - Bridget Knight
- Institute of Biomedical & Clinical Science, College of Medicine & Health, University of Exeter, Exeter, UK.,NIHR Exeter Clinical Research Facility, Royal Devon & Exeter NHS Foundation Trust, Exeter, UK
| | - Alexander Spiers
- Academic Department of Respiratory Medicine, Royal Devon & Exeter NHS Foundation Trust, Exeter, UK
| | - Michael Gibbons
- Academic Department of Respiratory Medicine, Royal Devon & Exeter NHS Foundation Trust, Exeter, UK.,Institute of Biomedical & Clinical Science, College of Medicine & Health, University of Exeter, Exeter, UK
| | - Craig Williams
- Sport and Health Science, University of Exeter, Exeter, UK.,Academic Department of Respiratory Medicine, Royal Devon & Exeter NHS Foundation Trust, Exeter, UK
| | - Chris Scotton
- Academic Department of Respiratory Medicine, Royal Devon & Exeter NHS Foundation Trust, Exeter, UK .,Institute of Biomedical & Clinical Science, College of Medicine & Health, University of Exeter, Exeter, UK
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13
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Clinical Improvement and Effectiveness of Exercise-Based Pulmonary Rehabilitation in Patients With Idiopathic Pulmonary Fibrosis: A BRIEF ANALYTICAL REVIEW. J Cardiopulm Rehabil Prev 2020; 41:52-57. [PMID: 33186196 DOI: 10.1097/hcr.0000000000000544] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Idiopathic pulmonary fibrosis (IPF) is a chronic, progressive lung disease associated with high mortality rates and poor clinical condition. Exercise-based pulmonary rehabilitation (EBPR) has been demonstrated to be effective in improving 6-min walk distance (6MWD), although the clinical improvement and effectiveness are less characterized. The current review examined the existing evidence of EBPR among patients with IPF and aimed to analyze the effect of EBPR on clinical improvement and effectiveness. METHODS A systematic databases search (MEDLINE/PubMed, EMBASE, and the Cochrane Library) was conducted for available publications as of January 2020. Randomized controlled trials (RCTs) and meta-analyses of RCTs examining the effect of EBPR in patients with IPF were reviewed. Mean difference for RCTs and weighted mean difference for meta-analyses between the EBPR arm and the usual-care arm in 6MWD were compared with the established minimal clinically important difference (MCID) of 30 m. Clinical improvement following EBPR was determined when mean difference and weighted mean difference were equal or exceeding the MCID. Effectiveness of EBPR was assessed using the number needed to treat (NNT) analysis. RESULTS Five independent RCTs (including 21-61 patients/study) and five meta-analyses (including two to five studies with 62-169 patients/meta-analysis) were included. The mean difference of 6MWD ranged from 16-81 m in RCTs. Three of five RCTs demonstrated an average improvement that meets or exceeds the MCID. Two RCTs showed favorable improvement in 6MWD but did not reach the MCID. The weighted mean difference of 6MWD ranged from 27-49 m in the meta-analyses. Four of five meta-analyses showed an average improvement that meets or exceeds the MCID. One early meta-analysis of only two RCTs showed significant improvement, although did not reach the MCID. The NNT in three RCTs and four meta-analyses that met clinical improvement in 6MWD was one. CONCLUSIONS This review provides novel evidence with respect to clinical improvement and high effectiveness of EBPR among patients with IPF. The results suggest that, on average, the majority of patients would be expected to clinically improve by completing the EBPR program. The findings further support the prescription of EBPR as clinically effective therapy and implementation as standard of care for patients with IPF. Future studies examining clinical improvement and effectiveness utilizing additional outcomes with the MCID are warranted.
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14
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Barratt SL, Davis R, Sharp C, Pauling JD. The prognostic value of cardiopulmonary exercise testing in interstitial lung disease: a systematic review. ERJ Open Res 2020; 6:00027-2020. [PMID: 32832530 PMCID: PMC7430148 DOI: 10.1183/23120541.00027-2020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Accepted: 04/22/2020] [Indexed: 01/05/2023] Open
Abstract
The heterogeneity of interstitial lung disease (ILD) results in prognostic uncertainty concerning end-of-life discussions and optimal timing for transplantation. Effective prognostic markers and prediction models are needed. Cardiopulmonary exercise testing (CPET) provides a comprehensive assessment of the physiological changes in the respiratory, cardiovascular and musculoskeletal systems in a controlled laboratory environment. It has shown promise as a prognostic factor for other chronic respiratory conditions. We sought to evaluate the prognostic value of CPET in predicting outcomes in longitudinal studies of ILD. MEDLINE, Embase and the Cochrane Database of Systematic Reviews were used to identify studies reporting the prognostic value of CPET in predicting outcomes in longitudinal studies of ILD. Study quality was assessed using the Quality in Prognosis Study risk of bias tool. Thirteen studies were included that reported the prognostic value of CPET in ILD. All studies reported at least one CPET parameter predicting clinical outcomes in ILD, with survival being the principal outcome assessed. Maximum oxygen consumption, reduced ventilatory efficiency and exercise-induced hypoxaemia were all reported to have prognostic value in ILD. Issues with study design (primarily due to inherent problems of retrospective studies, patient selection and presentation of numerous CPET parameters), insufficient adjustment for important confounders and inadequate statistical analyses limit the strength of the conclusions that can be drawn at this stage. There is insufficient evidence to confirm the value of CPET in facilitating “real-world” clinical decisions in ILD. Additional prospective studies are required to validate the putative prognostic associations reported in previous studies in carefully phenotyped patient populations. There is presently insufficient evidence to confirm the value of CPET in facilitating “real-world” clinical decisions in ILD. Additional prospective studies are required to validate the putative prognostic associations reported in previous studies.https://bit.ly/3dfp5kq
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Affiliation(s)
- Shaney L Barratt
- Academic Respiratory Unit, School of Clinical Sciences, University of Bristol, Bristol, UK.,Bristol Interstitial Lung Disease Service, North Bristol NHS Trust, Westbury-on-Trym, Bristol, UK
| | - Richard Davis
- Academic Respiratory Unit, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - Charles Sharp
- Gloucestershire Hospitals NHS Foundation Trust, Gloucester, UK
| | - John D Pauling
- Department of Pharmacy and Pharmacology, University of Bath, Bath, UK.,Royal National Hospital for Rheumatic Diseases, Royal United Hospitals NHS Foundation Trust, Bath, UK
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15
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Arizono S, Furukawa T, Taniguchi H, Sakamoto K, Kimura T, Kataoka K, Ogawa T, Watanabe F, Kondoh Y. Supplemental oxygen improves exercise capacity in
IPF
patients with exertional desaturation. Respirology 2020; 25:1152-1159. [DOI: 10.1111/resp.13829] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 03/10/2020] [Accepted: 03/31/2020] [Indexed: 12/01/2022]
Affiliation(s)
- Shinichi Arizono
- School of Rehabilitation Sciences Seirei Christopher University Hamamatsu Japan
- Department of Rehabilitation Tosei General Hospital Seto Japan
| | - Taiki Furukawa
- Department of Respiratory Medicine Nagoya University Graduate School of Medicine Nagoya Japan
- Department of Medical IT Center Nagoya University Graduate School of Medicine Nagoya Japan
| | - Hiroyuki Taniguchi
- Department of Respiratory Medicine and Allergy Tosei General Hospital Seto Japan
| | - Koji Sakamoto
- Department of Respiratory Medicine Nagoya University Graduate School of Medicine Nagoya Japan
| | - Tomoki Kimura
- Department of Respiratory Medicine and Allergy Tosei General Hospital Seto Japan
| | - Kensuke Kataoka
- Department of Respiratory Medicine and Allergy Tosei General Hospital Seto Japan
| | - Tomoya Ogawa
- Department of Rehabilitation Tosei General Hospital Seto Japan
| | - Fumiko Watanabe
- Department of Rehabilitation Tosei General Hospital Seto Japan
| | - Yasuhiro Kondoh
- Department of Respiratory Medicine and Allergy Tosei General Hospital Seto Japan
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16
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Gochicoa-Rangel L, Ramírez-José MC, Troncoso-Huitrón P, Silva-Cerón M, Guzmán-Valderrábano C, Lechuga-Trejo I, Cid-Juárez S, Torre-Bouscoulet L. Shorter corridors can be used for the six-minute walk test in subjects with chronic lung diseases. Respir Investig 2020; 58:255-261. [PMID: 32111517 DOI: 10.1016/j.resinv.2019.12.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 11/23/2019] [Accepted: 12/23/2019] [Indexed: 11/18/2022]
Abstract
BACKGROUND The main limitation of the six-minute walk test (6-MWT) is that not all pulmonary function testing facilities have an indoor flat, 30-m-long corridor. Therefore, this study aimed 1) to evaluate the correlation and agreement of the distances walked in 30-m- vs. 15-m-long corridors by subjects with chronic lung diseases (CLD group) and 2) to compare the levels of oxygen saturation (nSpO2), blood pressure (BP), heart rate recovery at minute one post-exercise (HRR1), and Borg scale scores for dyspnea and fatigue between the two distances walked. METHODS A prospective, cross-sectional study was conducted at the National Institute of Respiratory Diseases in Mexico City. Subjects with chronic lung diseases and healthy adults were invited to participate. The distance of the 6-MWT was randomly assigned based on whether the first test was in the 15-m or 30-m corridor. RESULTS Ninety individuals were included; the correlation in meters walked between the two corridors was r = 0.96 in CLD; the 95% limits of agreement for the 6-MWT ranged from -73 to +37 m. Most subjects walked further in the 30-m corridor (82%); however, the percent predicted values for the CLD group were 3.5% lower for the 15-m corridor than the 30-m corridor. Only 10.5% of the subjects with CLD would have been falsely classified as having a normal 6-MWT (false negative). No significant differences in the nSpO2, Borg scale, BP or HRR1 were found between the two 6-MWT corridor lengths. CONCLUSION The 6-MWT can be performed using a 15-m corridor in subjects with CLD, and the results for the distance walked, HRR1, nSpO2, and Borg scale scores are similar to between the 15-m and 30-m corridors.
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Affiliation(s)
- Laura Gochicoa-Rangel
- Departamento de Fisiología Respiratoria, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosío Villegas", Tlalpan 4502, Sección XXI, Alcaldía Tlalpan, Ciudad de México, 14080, Mexico; Laboratorio de Función Pulmonar, Insituto de Desarrollo e Innovación en Fisiología Respiratoria S. de R.L, Av. Baja California 67-301, Romar Sur, Alcaldia Cuauhtémoc, Ciudad de México, 06760, Mexico.
| | - María C Ramírez-José
- Departamento de Fisiología Respiratoria, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosío Villegas", Tlalpan 4502, Sección XXI, Alcaldía Tlalpan, Ciudad de México, 14080, Mexico
| | - Prysila Troncoso-Huitrón
- Departamento de Fisiología Respiratoria, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosío Villegas", Tlalpan 4502, Sección XXI, Alcaldía Tlalpan, Ciudad de México, 14080, Mexico
| | - Mónica Silva-Cerón
- Departamento de Fisiología Respiratoria, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosío Villegas", Tlalpan 4502, Sección XXI, Alcaldía Tlalpan, Ciudad de México, 14080, Mexico
| | - Carlos Guzmán-Valderrábano
- Departamento de Fisiología Respiratoria, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosío Villegas", Tlalpan 4502, Sección XXI, Alcaldía Tlalpan, Ciudad de México, 14080, Mexico
| | - Irma Lechuga-Trejo
- Departamento de Fisiología Respiratoria, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosío Villegas", Tlalpan 4502, Sección XXI, Alcaldía Tlalpan, Ciudad de México, 14080, Mexico
| | - Silvia Cid-Juárez
- Departamento de Fisiología Respiratoria, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosío Villegas", Tlalpan 4502, Sección XXI, Alcaldía Tlalpan, Ciudad de México, 14080, Mexico
| | - Luis Torre-Bouscoulet
- Laboratorio de Función Pulmonar, Insituto de Desarrollo e Innovación en Fisiología Respiratoria S. de R.L, Av. Baja California 67-301, Romar Sur, Alcaldia Cuauhtémoc, Ciudad de México, 06760, Mexico.
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17
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Suzuki A, Ando M, Kimura T, Kataoka K, Yokoyama T, Shiroshita E, Kondoh Y. The impact of high-flow nasal cannula oxygen therapy on exercise capacity in fibrotic interstitial lung disease: a proof-of-concept randomized controlled crossover trial. BMC Pulm Med 2020; 20:51. [PMID: 32093665 PMCID: PMC7041255 DOI: 10.1186/s12890-020-1093-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 02/19/2020] [Indexed: 11/28/2022] Open
Abstract
Background Patients with fibrotic interstitial lung disease (FILD) often experience gas exchange abnormalities and ventilatory limitations, resulting in reduced exercise capacity. High-flow nasal cannula (HFNC) oxygen therapy is a novel treatment, whose physiological beneficial effects have been demonstrated in various clinical settings. We hypothesized that HFNC oxygen therapy might be superior to conventional oxygen therapy for improving exercise capacity in FILD patients. Methods We performed a prospective randomized controlled crossover trial with a high-intensity constant work-rate endurance test (CWRET) using HFNC (50 L/min, FiO2 0.5) and a venturi mask (VM) (15 L/min, FiO2 0.5) for oxygen delivery in FILD patients. The primary outcome variable was endurance time. The secondary outcome variables were SpO2, heart rate, Borg scale (dyspnea and leg fatigue), and patient’s comfort. Results Seven hundred and eleven patients were screened and 20 eligible patients were randomized. All patients completed the trial. The majority of patients were good responders to VM and HFNC compared with the baseline test (VM 75%; HFNC 65%). There was no significant difference in endurance time between HFNC and VM (HFNC 6.8 [95% CI 4.3–9.3] min vs VM 7.6 [95% CI 5.0–10.1] min, p = 0.669). No significant differences were found in other secondary endpoints. Subgroup analysis with HFNC good responders revealed that HFNC significantly extended the endurance time compared with VM (VM 6.4 [95%CI 4.5–8.3] min vs HFNC 7.8 [95%CI 5.8–9.7] min, p = 0.046), while no similar effect was observed in the VM good responders. Conclusions HFNC did not exceed the efficacy of VM on exercise capacity in FILD, but it may be beneficial if the settings match. Further large studies are needed to confirm these findings. Trial registration UMIN-CTR: UMIN000021901.
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Affiliation(s)
- Atsushi Suzuki
- Department of Respiratory Medicine and Allergy, Tosei General Hospital, 160 Nishioiwake-cho, Seto, Aichi, 489-8642, Japan. .,Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan.
| | - Masahiko Ando
- Center for Advanced Medicine and Clinical Research, Nagoya University Hospital, Nagoya, Aichi, Japan
| | - Tomoki Kimura
- Department of Respiratory Medicine and Allergy, Tosei General Hospital, 160 Nishioiwake-cho, Seto, Aichi, 489-8642, Japan
| | - Kensuke Kataoka
- Department of Respiratory Medicine and Allergy, Tosei General Hospital, 160 Nishioiwake-cho, Seto, Aichi, 489-8642, Japan
| | - Toshiki Yokoyama
- Department of Respiratory Medicine and Allergy, Tosei General Hospital, 160 Nishioiwake-cho, Seto, Aichi, 489-8642, Japan
| | | | - Yasuhiro Kondoh
- Department of Respiratory Medicine and Allergy, Tosei General Hospital, 160 Nishioiwake-cho, Seto, Aichi, 489-8642, Japan
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18
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Hagmeyer L, Herkenrath S, Anduleit N, Treml M, Randerath W. Cardiopulmonary Exercise Testing Allows Discrimination Between Idiopathic Non-specific Interstitial Pneumonia and Idiopathic Pulmonary Fibrosis in Mild to Moderate Stages of the Disease. Lung 2019; 197:721-726. [PMID: 31676976 DOI: 10.1007/s00408-019-00282-9] [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: 04/14/2019] [Accepted: 10/15/2019] [Indexed: 10/25/2022]
Abstract
It is unclear whether there are cardiopulmonary exercise testing (CPET) parameters which may indicate poor prognosis in the early course of fibrosing interstitial lung disease. 27 untreated consecutive subjects (13 idiopathic non-specific interstitial pneumonia (iNSIP), 14 idiopathic pulmonary fibrosis (IPF); 19 male; age 69 ± 10 years) were enrolled in this observational pilot study. Subjects underwent routine pulmonary function testing and CPET. Statistically, the t test and the Mann-Whitney-U test were applied in the presence of normal and non-normal distribution (according to Shapiro-Wilk), respectively. Analyzing the whole cohort, only mild functional impairments were determined. Comparison of iNSIP and IPF groups detected significant differences for the CPET parameters V'O2Peak[%pred] (p = 0.011), V'O2/kgPeak (p = 0.033), Watt[%pred] (p = 0.048), V'E/V'CO2 (Rest: p = 0.016; AT: p = 0.011; Peak: p = 0.019; Slope: p = 0.040), V'E/V'O2 (Rest: p = 0.033 AT: p = 0.014; Peak: p = 0.035). CPET parameters may indicate IPF-specific impairments even in mild disease. It may be hypothesized that these parameters are early biomarkers of poor prognosis.
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Affiliation(s)
- Lars Hagmeyer
- Hospital Bethanien Solingen, Institute of Pneumology, University of Cologne, Solingen, Germany. .,Hospital Bethanien Solingen, Clinic of Pneumology and Allergology, Center for Sleep Medicine and Respiratory Care, Aufderhöher Straße 169-175, 42699, Solingen, Germany.
| | - Simon Herkenrath
- Hospital Bethanien Solingen, Institute of Pneumology, University of Cologne, Solingen, Germany.,Hospital Bethanien Solingen, Clinic of Pneumology and Allergology, Center for Sleep Medicine and Respiratory Care, Aufderhöher Straße 169-175, 42699, Solingen, Germany
| | - Norbert Anduleit
- Hospital Bethanien Solingen, Institute of Pneumology, University of Cologne, Solingen, Germany
| | - Marcel Treml
- Hospital Bethanien Solingen, Institute of Pneumology, University of Cologne, Solingen, Germany
| | - Winfried Randerath
- Hospital Bethanien Solingen, Institute of Pneumology, University of Cologne, Solingen, Germany.,Hospital Bethanien Solingen, Clinic of Pneumology and Allergology, Center for Sleep Medicine and Respiratory Care, Aufderhöher Straße 169-175, 42699, Solingen, Germany
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19
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Physiological Responses and Prognostic Value of Common Exercise Testing Modalities in Idiopathic Pulmonary Fibrosis. J Cardiopulm Rehabil Prev 2019; 39:193-198. [DOI: 10.1097/hcr.0000000000000362] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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20
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Christopoulos G, Bois J, Allison TG, Rodriguez-Porcel M, Chareonthaitawee P. The impact of combined cardiopulmonary exercise testing and SPECT myocardial perfusion imaging on downstream evaluation and management. J Nucl Cardiol 2019; 26:92-106. [PMID: 28508270 DOI: 10.1007/s12350-017-0910-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 04/11/2017] [Accepted: 04/17/2017] [Indexed: 11/27/2022]
Abstract
OBJECTIVE The diagnostic yield of combined cardiopulmonary exercise testing (CPET) and myocardial perfusion imaging (MPI) in patients referred for stress testing has received limited study. METHODS We evaluated consecutive patients who underwent combined CPET-MPI at a single tertiary referral center between 2011 and 2015. An abnormal CPET was defined as any of the following: reduced oxygen consumption, cardiac output impairment, or pulmonary impairment. Normal MPI was defined as the absence of resting or stress perfusion defect. The primary study outcome was change in clinical decision-making after CPET-MPI including management of pulmonary disease, management of deconditioning, heart failure management, and referral for cardiac catheterization. Outcomes of patients with normal and abnormal MPI were presented based on the specific CPET abnormality. RESULTS 415 patients were included in the study. Of the 269 patients that had normal MPI, 206 (77%) had abnormal CPET. Patients with abnormal CPET and normal MPI, compared with patients that had normal CPET and normal MPI, were more frequently diagnosed with pulmonary disease (11.7% vs 3.2%, P = .04) and deconditioning (33.5% vs 17.4%, P = .01). Of the 146 patients that had abnormal MPI, 128 (88%) had abnormal CPET. Patients with abnormal CPET and abnormal MPI, compared with patients that had normal CPET and abnormal MPI, did not statistically differ with regard to the study outcome. CONCLUSION An abnormal CPET, if the MPI was normal, prompted further evaluation and led to management of pulmonary disease and deconditioning.
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Affiliation(s)
| | - John Bois
- Department of Cardiovascular Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
| | - Thomas G Allison
- Department of Cardiovascular Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
| | - Martin Rodriguez-Porcel
- Department of Cardiovascular Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
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21
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Vainshelboim B, Kramer MR, Myers J, Unterman A, Izhakian S, Oliveira J. 8-Foot-Up-and-Go Test is Associated with Hospitalizations and Mortality in Idiopathic Pulmonary Fibrosis: A Prospective Pilot Study. Lung 2019; 197:81-88. [PMID: 30600393 DOI: 10.1007/s00408-018-0189-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 12/16/2018] [Indexed: 05/05/2023]
Abstract
PURPOSE To assess the prognostic value of the 8-foot-up-and-go test (8-FUGT) in pilot cohort of patients with idiopathic pulmonary fibrosis (IPF). METHODS Thirty-four patients with IPF (68 ± 8 years) underwent 8-FUGT at baseline and were followed for up to 40 months. Receiver operating characteristics and age-adjusted Cox hazard ratios (HR) were analyzed for 8-FUGT, hospitalizations, and mortality. Correlation coefficients were determined between 8-FUGT and other exercise tests. RESULTS 8-FUGT ≥ 6.9 s was found to be associated with hospitalization (sensitivity = 77%, specificity = 76%, p = 0.03) and mortality (sensitivity = 91%, specificity = 70% p = 0.008) in patients with IPF. Categorical models demonstrated that 8-FUGT ≥ 6.9 s was associated with 14.1- (p < 0.001) and 55.4-fold (p = 0.001) increased risks for hospitalization and mortality, respectively. In continuous models, for every 1-s slower performance in the 8-FUGT there were 54% [HR = 1.54, 95% CI (1.11-2.15) p = 0.01] increased risk for hospitalization and 94% [HR = 1.94, 95% CI (1.26-2.99) p = 0.003] increased risk for mortality. 8-FUGT was inversely related to 6-min walk distance (r = - 0.61), peak oxygen consumption (r = - 0.58), and peak work rate (r = - 0.72), all p < 0.001. CONCLUSIONS The 8-FUGT was strongly associated with hospitalizations and mortality in patients with IPF, as well as correlated with established prognostic markers. These novel findings suggest a prognostic value of the 8-FUGT for risk stratification, referral to pulmonary rehabilitation, and considering listing for lung transplantation. 8-FUGT is an inexpensive and practical tool that has prospective for implementation in clinical and research settings in IPF. Future prospective studies should evaluate the effect of changes in 8-FUGT on clinical outcomes. TRIAL REGISTRATION NCT01499745, Clinicaltrials.gov.
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Affiliation(s)
- Baruch Vainshelboim
- Master of Cancer Care Program, School of Health Sciences, Saint Francis University, Loretto, PA, USA. .,Pulmonary Institute, Rabin Medical Center, Beilinson Hospital, Petach Tikva, Israel. .,Research Center in Physical Activity, Health and Leisure (CIAFEL), Faculty of Sport, University of Porto, Porto, Portugal.
| | - Mordechai Reuven Kramer
- Pulmonary Institute, Rabin Medical Center, Beilinson Hospital, Petach Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Jonathan Myers
- Cardiology Division, Veterans Affairs Palo Alto Health Care System/Stanford University, Palo Alto, CA, USA
| | - Avraham Unterman
- Pulmonary Institute, Rabin Medical Center, Beilinson Hospital, Petach Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Shimon Izhakian
- Pulmonary Institute, Rabin Medical Center, Beilinson Hospital, Petach Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Jose Oliveira
- Research Center in Physical Activity, Health and Leisure (CIAFEL), Faculty of Sport, University of Porto, Porto, Portugal
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Faverio P, De Giacomi F, Bonaiti G, Stainer A, Sardella L, Pellegrino G, Sferrazza Papa GF, Bini F, Bodini BD, Carone M, Annoni S, Messinesi G, Pesci A. Management of Chronic Respiratory Failure in Interstitial Lung Diseases: Overview and Clinical Insights. Int J Med Sci 2019; 16:967-980. [PMID: 31341410 PMCID: PMC6643124 DOI: 10.7150/ijms.32752] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 05/05/2019] [Indexed: 01/11/2023] Open
Abstract
Interstitial lung diseases (ILDs) may be complicated by chronic respiratory failure (CRF), especially in the advanced stages. Aim of this narrative review is to evaluate the current evidence in management of CRF in ILDs. Many physiological mechanisms underlie CRF in ILDs, including lung restriction, ventilation/perfusion mismatch, impaired diffusion capacity and pulmonary vascular damage. Intermittent exertional hypoxemia is often the initial sign of CRF, evolving, as ILD progresses, into continuous hypoxemia. In the majority of the cases, the development of CRF is secondary to the worsening of the underlying disease; however, associated comorbidities may also play a role. When managing CRF in ILDs, the need for pulmonary rehabilitation, the referral to lung transplant centers and palliative care should be assessed and, if necessary, promptly offered. Long-term oxygen therapy is commonly prescribed in case of resting or exertional hypoxemia with the purpose to decrease dyspnea and improve exercise tolerance. High-Flow Nasal Cannula oxygen therapy may be used as an alternative to conventional oxygen therapy for ILD patients with severe hypoxemia requiring both high flows and high oxygen concentrations. Non-Invasive Ventilation may be used in the chronic setting for palliation of end-stage ILD patients, although the evidence to support this application is very limited.
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Affiliation(s)
- Paola Faverio
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy; Respiratory Unit, San Gerardo Hospital, ASST di Monza, Monza, Italy
| | - Federica De Giacomi
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy; Respiratory Unit, San Gerardo Hospital, ASST di Monza, Monza, Italy
| | - Giulia Bonaiti
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy; Respiratory Unit, San Gerardo Hospital, ASST di Monza, Monza, Italy
| | - Anna Stainer
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy; Respiratory Unit, San Gerardo Hospital, ASST di Monza, Monza, Italy
| | - Luca Sardella
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy; Respiratory Unit, San Gerardo Hospital, ASST di Monza, Monza, Italy
| | - Giulia Pellegrino
- Casa di Cura del Policlinico, Dipartimento di Scienze Neuroriabilitative, Milan, Italy
| | | | - Francesco Bini
- UOC Pulmonology, Department of Internal Medicine, Ospedale ASST-Rhodense, Garbagnate Milanese, Italy
| | - Bruno Dino Bodini
- Pulmonology Unit, Ospedale Maggiore della Carità, University of Piemonte Orientale, Novara, Italy
| | - Mauro Carone
- UOC Pulmonology and Pulmonary Rehabilitation, Istituti Clinici Scientifici Maugeri, IRCCS di Cassano Murge (BA), Italy
| | - Sara Annoni
- Physical therapy and Rehabilitation Unit, San Gerardo Hospital, ASST di Monza, Monza, Italy
| | - Grazia Messinesi
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy; Respiratory Unit, San Gerardo Hospital, ASST di Monza, Monza, Italy
| | - Alberto Pesci
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy; Respiratory Unit, San Gerardo Hospital, ASST di Monza, Monza, Italy
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The Keys to Making a Confident Diagnosis of IPF. Respir Med 2019. [DOI: 10.1007/978-3-319-99975-3_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Impact of Pulmonary Rehabilitation on Exercise Tolerance and Quality of Life in Patients With Idiopathic Pulmonary Fibrosis. J Cardiopulm Rehabil Prev 2018; 38:273-278. [DOI: 10.1097/hcr.0000000000000273] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Naz I, Sahin H, Demirci Uçsular F, Yalnız E. A comparison trial of eight weeks versus twelve weeks of exercise program in interstitial lung diseases. SARCOIDOSIS VASCULITIS AND DIFFUSE LUNG DISEASES 2018; 35:299-307. [PMID: 32476917 PMCID: PMC7170130 DOI: 10.36141/svdld.v35i4.6830] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 08/20/2018] [Indexed: 01/08/2023]
Abstract
Background: Exercise training have been shown to be the effective approach for functional outcomes in interstitial lung diseases (ILD). In many studies, the duration of exercise programs (EPs) varies between 8-12 weeks. However, the optimal duration of EPs is still unknown. Objective: In our prospective non-controlled study, we aimed to compare the results of the 8th week with the results of the 12th week of the PR programs applied to the patients with ILD. Methods: A total of 14 patients [Age; 63(53,70) years, body mass index: 28(25,32) kg/m2, disease duration; 1.5 (1,4) years] with ILD [11 idiopathic pulmonary fibrosis, 2 sarcoidosis (stage 3 and 4) and 1 nonspecific interstitial pneumonia] were included in the study. 6-minute walk test, pulmonary function test, arterial blood gas analysis, mMRC dyspnea scale, quality of life questionnaires and hospital anxiety depression scale were performed at before and 8 and 12 weeks after the program. Results: 6-minute walk distance, dyspnea, anxiety, depression and quality of life improved both at 8th and 12th week after EP when compared the with the initial assessment(P<0.05). When compared with 8th week; mMRC dyspnea score, 6-minute walk distance and quality of life scores significantly improved at 12th weeks (P=0.046, P=0.016, P<0.05, respectively). Conclusions: Prolonging duration of the EPs results in more improvement in functional outcomes in patients with ILD. However, it has no effect on pulmonary functions and arterial blood gas results. (Sarcoidosis Vasc Diffuse Lung Dis 2018; 35: 299-307)
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Affiliation(s)
- Ilknur Naz
- Katip Celebi University, Faculty of Health Sciences, Department of Physiotherapy and Rehabilitation, Izmir, Turkey
| | - Hulya Sahin
- Dr. Suat Seren Chest Diseases and Surgery Training and Research Hospital, Izmir, Turkey
| | - Fatma Demirci Uçsular
- Dr. Suat Seren Chest Diseases and Surgery Training and Research Hospital, Izmir, Turkey
| | - Enver Yalnız
- Dr. Suat Seren Chest Diseases and Surgery Training and Research Hospital, Izmir, Turkey
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Physical activity in daily life in patients with idiopathic pulmonary fibrosis. Respir Investig 2017; 56:57-63. [PMID: 29325683 DOI: 10.1016/j.resinv.2017.09.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 06/21/2017] [Accepted: 09/21/2017] [Indexed: 12/31/2022]
Abstract
BACKGROUND Idiopathic pulmonary fibrosis (IPF) is characterized by progressive impairment of lung function and degradation of daily activity; however, this degradation has not been adequately elucidated. The objective of this study was to measure the physical activity of patients with IPF to determine its relationships with physiological parameters and survival rate. METHODS In total, 31 patients with IPF and 20 age-matched healthy participants were enrolled in this study. Physical activity was assessed using a physical activity monitor. The relationships among physical activity, physiological data, questionnaire-based patient-centered data, and survival were examined. RESULTS Physical activity, expressed as daily activity energy expenditure (AEE), was significantly lower, and the percentage of sedentary time was significantly longer in patients with IPF than in healthy participants. Moreover, AEE was moderately correlated with body-mass index, forced vital capacity, diffusing capacity of carbon monoxide, and partial arterial pressure of oxygen. Relatively strong correlation was also observed between AEE and the 6-min walk distance, but not with daily dyspnea, depression, and health-related quality of life scores. Prognostic analysis indicated that daily AEE was a significant predictor of survival. CONCLUSIONS Patients with IPF were significantly inactive compared with age-matched healthy participants. In patients with more impaired physiological functions, the lower the physical activity was, the more was the sedentary time increased. Furthermore, lower daily physical activity resulted in significantly worse survival.
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Layton AM, Armstrong HF, Kim HP, Meza KS, D'Ovidio F, Arcasoy SM. Cardiopulmonary exercise factors predict survival in patients with advanced interstitial lung disease referred for lung transplantation. Respir Med 2017; 126:59-67. [PMID: 28427551 DOI: 10.1016/j.rmed.2017.03.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 02/06/2017] [Accepted: 03/24/2017] [Indexed: 10/19/2022]
Abstract
BACKGROUND The purpose of this work was to determine if parameters assessed during Cardiopulmonary Exercise Testing (CPET) while using supplemental oxygen can independently predict one-year transplant-free survival in patients with Interstitial Lung Disease (ILD) referred for lung transplant evaluation. METHODS We performed a chart review of patients with ILD who completed CPET with 30% FiO2 and gathered spirometry, pulmonary hemodynamic, six-minute walk, and CPET data. The primary end-point was death or lung transplantation within one-year of CPET. RESULTS The final data set included 192 patients. 79 patients died/underwent transplant, 113 survived transplant-free. Multivariable Cox regression revealed peak workload % predicted, nadir CPET SpO2, and FVC% predicted as independent predictors of one-year transplant-free survival. Of the independent predictors of survival, receiver operating characteristics analysis revealed peak workload %predicted cutoff of 35% to be highly discriminatory, more so than nadir CPET SpO2 or FVC % predicted in identifying patients at risk for one-year mortality or transplant (peak workload % predicted < 35% HR = 4.71, 95% CI = 2.64-8.38 and area under the curve (AUC) = 0.740, nadir CPET SpO2 < 86% HR = 2.27, 95%CI = 1.41-3.68, AUC = 0.645, FVC %predicted <45% HR = 1.82, 95% CI = 1.15-2.87, AUC = 0.624). CONCLUSION Peak workload % predicted, nadir CPET SpO2, and FVC% predicted in ILD patients referred for lung transplant evaluation are independently predictive of one-year mortality or need for transplant.
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Affiliation(s)
- Aimee M Layton
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Columbia University Medical Center, New York, NY, USA.
| | - Hilary F Armstrong
- Department of Rehabilitation and Regenerative Medicine, Columbia University Medical Center, New York, NY, USA; Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA
| | | | | | - Frank D'Ovidio
- Columbia Lung Transplant Program, College of Physicians and Surgeons, Columbia University Medical Center, New York, NY, USA
| | - Selim M Arcasoy
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Columbia University Medical Center, New York, NY, USA; Columbia Lung Transplant Program, College of Physicians and Surgeons, Columbia University Medical Center, New York, NY, USA
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Bonini M, Fiorenzano G. Exertional dyspnoea in interstitial lung diseases: the clinical utility of cardiopulmonary exercise testing. Eur Respir Rev 2017; 26:26/143/160099. [DOI: 10.1183/16000617.0099-2016] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 12/01/2016] [Indexed: 01/08/2023] Open
Abstract
Interstitial lung diseases (ILDs) represent a heterogeneous group of pathologies characterised by alveolar and interstitial damage, pulmonary inflammation (usually associated with fibrosis), decreased lung function and impaired gas exchange, which can be attributed to either a known or an unknown aetiology. Dyspnoea is one of the most common and disabling symptoms in patients with ILD, significantly impacting quality of life. The mechanisms causing dyspnoea are complex and not yet fully understood. However, it is recognised that dyspnoea occurs when there is an imbalance between the central respiratory efferent drive and the response of the respiratory musculature. The respiratory derangement observed in ILD patients at rest is even more evident during exercise. Pathophysiological mechanisms responsible for exertional dyspnoea and reduced exercise tolerance include altered respiratory mechanics, impaired gas exchange, cardiovascular abnormalities and peripheral muscle dysfunction.This review describes the respiratory physiology of ILD, both at rest and during exercise, and aims to provide comprehensive and updated evidence on the clinical utility of the cardiopulmonary exercise test in the assessment and management of these pathological entities. In addition, the role of exercise training and pulmonary rehabilitation programmes in the ILD population is addressed.
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Abstract
Key points Educational aims Exercise is a well-documented safe and effective intervention for prevention and rehabilitation of chronic diseases. Idiopathic pulmonary fibrosis (IPF) is a chronic deadly lung disease associated with severe signs and symptoms, exercise intolerance, diminished quality of life and poor prognosis. In the short term, supervised exercise training programmes have demonstrated clinical benefits in improving exercise capacity, dyspnoea and quality of life in patients with IPF. The underlying mechanisms of chronic adaption to a regular exercise regimen in IPF have yet to be well described and require further investigation. The available data underscore the importance of implementing training principles to target the pathophysiological impairments of IPF in order to optimise training adaption and enhance the outcomes. The current exercise training data in IPF provide sufficient evidence of clinical benefit for consideration to be given to recommending exercise-based pulmonary rehabilitation as standard of care for IPF. An overview of data on exercise for IPF patients, highlighting the importance of exercise training in IPF managementhttp://ow.ly/4mWCCd
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Affiliation(s)
- Baruch Vainshelboim
- Pulmonary Institute, Rabin Medical Center, Beilinson Hospital, Petach Tikva, Israel; Cardiology Division, Veterans Affairs Palo Alto Health Care System/Stanford University, Palo Alto, CA, USA
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31
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Olson AL, Brown KK, Swigris JJ. Understanding and optimizing health-related quality of life and physical functional capacity in idiopathic pulmonary fibrosis. PATIENT-RELATED OUTCOME MEASURES 2016; 7:29-35. [PMID: 27274328 PMCID: PMC4876092 DOI: 10.2147/prom.s74857] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Idiopathic pulmonary fibrosis (IPF) is a relentlessly progressive pulmonary disease characterized by the insidious onset of shortness of breath due to parenchymal scarring. As IPF progresses, breathlessness worsens, physical functional capacity declines, and health-related quality of life (HRQL) - the impact of health or disease on a person's satisfaction with their overall station in life - deteriorates. These two inextricably linked variables - breathlessness and physical functional capacity - are strong drivers of HRQL. With the emergence of new and prospective therapies for IPF, it is more important than ever to be able to accurately and reliably assess how IPF patients feel and function. Doing so will promote the development of novel interventions to target impairments in these areas and ensure that the field is capable of assessing the effect of therapeutics interventions on these critically important patient-centered outcomes.
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Affiliation(s)
- Amy L Olson
- Department of Medicine Division of Pulmonary Medicine, Interstitial Lung Disease Program and Autoimmune Lung Center, National Jewish Health, Denver, CO, USA
| | - Kevin K Brown
- Department of Medicine Division of Pulmonary Medicine, Interstitial Lung Disease Program and Autoimmune Lung Center, National Jewish Health, Denver, CO, USA
| | - Jeffrey J Swigris
- Department of Medicine Division of Pulmonary Medicine, Interstitial Lung Disease Program and Autoimmune Lung Center, National Jewish Health, Denver, CO, USA
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Nishiyama O, Yamazaki R, Sano A, Yamagata T, Sano H, Iwanaga T, Higashimoto Y, Kume H, Tohda Y. Prognostic value of forced expiratory volume in 1 second/forced vital capacity in idiopathic pulmonary fibrosis. Chron Respir Dis 2016; 13:40-7. [PMID: 26374300 PMCID: PMC5720194 DOI: 10.1177/1479972315603714] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Emphysema on high-resolution computed tomography of the chest is the recent focus in the general practice in idiopathic pulmonary fibrosis (IPF). However, adequate attention has not been paid to obstructive disorder. Therefore, we retrospectively evaluated the association between the degree of airway obstruction and longevity in IPF subjects, with a hypothesis that lower forced expiratory volume in 1 second (FEV1)/forced vital capacity (FVC) has an impact on prognosis. One hundred and fourteen consecutive IPF subjects who had been diagnosed with IPF and had undergone evaluation including pulmonary function test from January 2008 to May 2013 were included in the study. The relationship between baseline data and survival was examined. FEV1/FVC was widely distributed, ranging from 48.6% to 100%. On both univariate and multivariate Cox's regression analyses, lower FEV1/FVC was significantly associated with better survival (hazard ratio of 1.07 and 1.04 and 95% confidential interval of 1.03-1.10 and 1.01-1.08, respectively). Even on analysis with backward selection, FEV1/FVC remained a significant prognostic factor. FEV1/FVC is widely distributed and negatively predicts survival in IPF. A FEV1/FVC should be assessed in "real-world" general practice. Also, the effect of smoking on the clinical course of IPF should be investigated further.
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Affiliation(s)
- Osamu Nishiyama
- Department of Respiratory Medicine and Allergology, Faculty of Medicine, Kinki University, Onohigashi, Osakasayama, Osaka, Japan
| | - Ryo Yamazaki
- Department of Respiratory Medicine and Allergology, Faculty of Medicine, Kinki University, Onohigashi, Osakasayama, Osaka, Japan
| | - Akiko Sano
- Department of Respiratory Medicine and Allergology, Faculty of Medicine, Kinki University, Onohigashi, Osakasayama, Osaka, Japan
| | - Toshiyuki Yamagata
- Department of Respiratory Medicine and Allergology, Faculty of Medicine, Kinki University, Onohigashi, Osakasayama, Osaka, Japan
| | - Hiroyuki Sano
- Department of Respiratory Medicine and Allergology, Faculty of Medicine, Kinki University, Onohigashi, Osakasayama, Osaka, Japan
| | - Takashi Iwanaga
- Department of Respiratory Medicine and Allergology, Faculty of Medicine, Kinki University, Onohigashi, Osakasayama, Osaka, Japan
| | - Yuji Higashimoto
- Department of Respiratory Medicine and Allergology, Faculty of Medicine, Kinki University, Onohigashi, Osakasayama, Osaka, Japan
| | - Hiroaki Kume
- Department of Respiratory Medicine and Allergology, Faculty of Medicine, Kinki University, Onohigashi, Osakasayama, Osaka, Japan
| | - Yuji Tohda
- Department of Respiratory Medicine and Allergology, Faculty of Medicine, Kinki University, Onohigashi, Osakasayama, Osaka, Japan
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Puente-Maestu L, Palange P, Casaburi R, Laveneziana P, Maltais F, Neder JA, O'Donnell DE, Onorati P, Porszasz J, Rabinovich R, Rossiter HB, Singh S, Troosters T, Ward S. Use of exercise testing in the evaluation of interventional efficacy: an official ERS statement. Eur Respir J 2016; 47:429-60. [DOI: 10.1183/13993003.00745-2015] [Citation(s) in RCA: 255] [Impact Index Per Article: 31.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 09/14/2015] [Indexed: 12/20/2022]
Abstract
This document reviews 1) the measurement properties of commonly used exercise tests in patients with chronic respiratory diseases and 2) published studies on their utilty and/or evaluation obtained from MEDLINE and Cochrane Library searches between 1990 and March 2015.Exercise tests are reliable and consistently responsive to rehabilitative and pharmacological interventions. Thresholds for clinically important changes in performance are available for several tests. In pulmonary arterial hypertension, the 6-min walk test (6MWT), peak oxygen uptake and ventilation/carbon dioxide output indices appear to be the variables most responsive to vasodilators. While bronchodilators do not always show clinically relevant effects in chronic obstructive pulmonary disease, high-intensity constant work-rate (endurance) tests (CWRET) are considerably more responsive than incremental exercise tests and 6MWTs. High-intensity CWRETs need to be standardised to reduce interindividual variability. Additional physiological information and responsiveness can be obtained from isotime measurements, particularly of inspiratory capacity and dyspnoea. Less evidence is available for the endurance shuttle walk test. Although the incremental shuttle walk test and 6MWT are reliable and less expensive than cardiopulmonary exercise testing, two repetitions are needed at baseline. All exercise tests are safe when recommended precautions are followed, with evidence suggesting that no test is safer than others.
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Vainshelboim B, Fox BD, Oliveira J, Kramer MR. Exercise training in idiopathic pulmonary fibrosis. Expert Rev Respir Med 2015; 10:69-77. [PMID: 26567878 DOI: 10.1586/17476348.2016.1121104] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Idiopathic pulmonary fibrosis (IPF) is a chronic devastating interstitial lung disease associated with exercise intolerance, dyspnea, hypoxemia, diminished quality of life and poor prognosis. A growing body of evidence with respect to short-term effects of exercise training has demonstrated clinical benefits in IPF patients. A recent systematic review showed significant improvements in 6-min walking distance, peak aerobic capacity, reduced dyspnea and improved quality of life. However, aspects of training programs, maintenance and predictors of improvement and the impact on prognosis need to be further explored. The aim of this paper was to comprehensively review the existing scientific literature regarding exercise training in patients with IPF and identify important gaps that should be studied in the future.
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Affiliation(s)
- Baruch Vainshelboim
- a Pulmonary Institute, Rabin Medical Center , Beilinson Hospital , Petach Tikva , Israel.,b Research Center in Physical Activity, Health and Leisure (CIAFEL), Faculty of Sport , University of Porto , Porto , Portugal
| | - Benjamin Daniel Fox
- a Pulmonary Institute, Rabin Medical Center , Beilinson Hospital , Petach Tikva , Israel.,c Sackler Faculty of Medicine , Tel Aviv University , Tel Aviv , Israel
| | - Jose Oliveira
- b Research Center in Physical Activity, Health and Leisure (CIAFEL), Faculty of Sport , University of Porto , Porto , Portugal
| | - Mordechai Reuven Kramer
- a Pulmonary Institute, Rabin Medical Center , Beilinson Hospital , Petach Tikva , Israel.,c Sackler Faculty of Medicine , Tel Aviv University , Tel Aviv , Israel
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Troy LK, Young IH, Lau EM, Corte TJ. Exercise pathophysiology and the role of oxygen therapy in idiopathic interstitial pneumonia. Respirology 2015; 21:1005-14. [DOI: 10.1111/resp.12650] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2014] [Revised: 01/29/2015] [Accepted: 08/03/2015] [Indexed: 12/22/2022]
Affiliation(s)
- Lauren K. Troy
- Department of Respiratory Medicine; Royal Prince Alfred Hospital; Sydney Australia
- Sydney Medical School; University of Sydney; Sydney Australia
| | - Iven H. Young
- Department of Respiratory Medicine; Royal Prince Alfred Hospital; Sydney Australia
- Sydney Medical School; University of Sydney; Sydney Australia
| | - Edmund M.T. Lau
- Department of Respiratory Medicine; Royal Prince Alfred Hospital; Sydney Australia
- Sydney Medical School; University of Sydney; Sydney Australia
| | - Tamera J. Corte
- Department of Respiratory Medicine; Royal Prince Alfred Hospital; Sydney Australia
- Sydney Medical School; University of Sydney; Sydney Australia
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Olson AL, Swigris JJ, Belkin A, Hannen L, Yagihashi K, Schenkman M, Brown KK. Physical functional capacity in idiopathic pulmonary fibrosis: performance characteristics of the continuous-scale physical function performance test. Expert Rev Respir Med 2015; 9:361-7. [PMID: 25843290 DOI: 10.1586/17476348.2015.1030396] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Physical functional capacity is impaired in idiopathic pulmonary fibrosis (IPF). There is no tool to measure this key clinical outcome. The continuous-scale physical function performance (CS-PFP) test is one that assesses activities of daily living, but it has never been used in IPF. METHODS We determined internal consistency of the CS-PFP. We used correlations to assess the strength of association between CS-PFP scores and various parameters of IPF severity, and compared the CS-PFP scores between patients with IPF and published values from a healthy control group. RESULTS Sixteen subjects completed the test and retest. Test-retest reliability (0.84, p = 0.003) and internal consistency (Cronbach's α = 0.91) were excellent. Subjects with IPF had significantly worse CS-PFP scores than controls (46.0 ± 11.1 vs 58.7 ± 12.5, p = 0.001). In IPF, the CS-PFP scores correlated moderately to very strongly with several disease severity variables. CONCLUSION The CS-PFP is a reliable and valid tool in IPF.
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Affiliation(s)
- Amy L Olson
- National Jewish Health, Interstitial Lung Disease Program and Autoimmune Lung Center, Denver, CO, USA
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Vainshelboim B, Oliveira J, Yehoshua L, Weiss I, Fox BD, Fruchter O, Kramer MR. Exercise Training-Based Pulmonary Rehabilitation Program Is Clinically Beneficial for Idiopathic Pulmonary Fibrosis. Respiration 2014; 88:378-88. [DOI: 10.1159/000367899] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2014] [Accepted: 07/28/2014] [Indexed: 11/19/2022] Open
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Holland AE, Dowman L, Fiore J, Brazzale D, Hill CJ, McDonald CF. Cardiorespiratory responses to 6-minute walk test in interstitial lung disease: not always a submaximal test. BMC Pulm Med 2014; 14:136. [PMID: 25113781 PMCID: PMC4139493 DOI: 10.1186/1471-2466-14-136] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Accepted: 06/16/2014] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND The 6-minute walk test (6 MWT) is used to measure exercise capacity and assess prognosis in interstitial lung disease (ILD). Although the 6 MWT is usually considered to be a test of submaximal exercise capacity in ILD, the physiological load imposed by this test is not well described and 6 MWT outcomes are poorly understood. This study aimed to compare cardiorespiratory responses to 6 MWT and cardiopulmonary exercise test (CPET) in people with ILD. METHODS 47 participants with ILD (27 idiopathic pulmonary fibrosis (IPF), mean age 71 (SD 12) years, diffusing capacity for carbon monoxide (TLCO) 49(15) %predicted) undertook CPET and 6 MWT on the same day in random order. Oxygen uptake (VO(2)), ventilation (VE) and carbon dioxide production (VCO2) were assessed during each test using a portable metabolic cart. RESULTS The VO(2)peak during the 6 MWT was lower than during CPET (1.17(0.27) vs 1.30(0.37) L.min-1, p = 0.001), representing an average of 94% (range 62-135%) of CPET VO(2)peak. Achieving a higher percentage of CPET VO(2)peak on 6 MWT was associated with lower TLCO %predicted (r = -0.43, p = 0.003) and more desaturation during walking (r = -0.46, p = 0.01). The VEpeak and VCO(2)peak were significantly lower during 6 MWT than CPET (p < 0.05). However, participants desaturated more during the 6 MWT (86(6)% vs 89(4)%, p < 0.001). The degree of desaturation was not affected by the percent of peak VO2 achieved during the 6 MWT. Responses were similar in the subgroup with IPF. CONCLUSIONS On average, the 6 MWT elicits a high but submaximal oxygen uptake in people with ILD. However the physiological load varies between individuals, with higher peak VO2 in those with more severe disease that may match or exceed that achieved on CPET. The 6 MWT is not always a test of submaximal exercise capacity in people with ILD.
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Cicchitto G, Musella V, Acitorio M, Capuano N, Fiorenzano G, Owen CA, Polverino M, Polverino F. Idiopathic pulmonary fibrosis and coronary artery disease. Multidiscip Respir Med 2014; 9:31. [PMID: 24976970 PMCID: PMC4074111 DOI: 10.1186/2049-6958-9-31] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Accepted: 05/07/2014] [Indexed: 11/10/2022] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is defined as a chronic fibrosing interstitial disease of unknown cause, limited to the lungs, and associated with the histopathologic and/or radiologic pattern of usual interstitial pneumonia (UIP); it generally progresses into respiratory failure and death. Although progression of the disease is the most common cause of death, there are increasing reports of its association with other pathologies has been reported: e.g., IPF patients seem more susceptible to cardiovascular diseases. Therefore, other pathologies might also influence the natural course. In this paper, we describe a case of IPF and coronary artery disease (CAD). We emphasize the importance of cardiopulmonary exercise test (CPET) as a useful procedure to monitor disease progression in IPF patients. We also stress the importance of a careful analysis of variables measured for an accurate interpretation of the clinical picture and an improvement of the clinical management of patients. Moreover, we suggest that a careful assessment of CPET parameters may additionally help in the early detection of high cardiovascular ischemic risk.
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Affiliation(s)
| | | | | | | | | | - Caroline A Owen
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA ; Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | | | - Francesca Polverino
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA ; Lovelace Respiratory Research Institute, Albuquerque, NM, USA
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Ortega Ruiz F, Díaz Lobato S, Galdiz Iturri JB, García Rio F, Güell Rous R, Morante Velez F, Puente Maestu L, Tàrrega Camarasa J. Oxigenoterapia continua domiciliaria. Arch Bronconeumol 2014; 50:185-200. [DOI: 10.1016/j.arbres.2013.11.025] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 11/22/2013] [Accepted: 11/24/2013] [Indexed: 11/24/2022]
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Schmidt SL, Tayob N, Han MK, Zappala C, Kervitsky D, Murray S, Wells AU, Brown KK, Martinez FJ, Flaherty KR. Predicting pulmonary fibrosis disease course from past trends in pulmonary function. Chest 2014; 145:579-585. [PMID: 24231810 DOI: 10.1378/chest.13-0844] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND The clinical course of idiopathic pulmonary fibrosis (IPF) is characterized by progressive decline in lung function and eventual mortality. We sought to determine if future declines in pulmonary function, mortality, or both can be predicted from prior trends in pulmonary function tests (PFTs). METHODS Data from 1981 to 2008 on 4,431 PFTs and mortality were analyzed from 734 subjects with IPF. The Kaplan-Meier method was used for mortality analyses. Mixed models were used to describe longitudinal pulmonary function dynamics, since PFTs were observed at varying time points from baseline. RESULTS During the first year of follow-up, 135 subjects (73%) had stable FVC while 50 subjects (37%) showed a decline in FVC. During months 12 to 24 (1-2 years after diagnosis), a stable FVC occurred with the same frequency among both subjects whose FVC had declined during year 1 and whose FVC had remained stable (84.0% and 80.7%, respectively; P=.59). Among subjects alive at the end of year 1, those with a stable FVC were more likely to be alive at the end of year 2 than those whose FVC declined (hazard ratio [HR], 0.91 [95% CI, 0.87-0.94] and HR, 0.71 [95% CI, 0.62-0.78], respectively). CONCLUSIONS PFT decline predicts early mortality, but not future declines in physiology, regardless of time since diagnosis.
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Affiliation(s)
| | - Nabihah Tayob
- University of Michigan Department of Biostatistics, Ann Arbor, MI
| | - Meilan K Han
- University of Michigan Health System, Ann Arbor, MI
| | - Christopher Zappala
- Royal Brompton and Harefield National Health Service Foundation Trust, London, England
| | | | - Susan Murray
- University of Michigan Department of Biostatistics, Ann Arbor, MI
| | - Athol U Wells
- Royal Brompton and Harefield National Health Service Foundation Trust, London, England
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Jackson RM, Gómez-Marín OW, Ramos CF, Sol CM, Cohen MI, Gaunaurd IA, Cahalin LP, Cardenas DD. Exercise limitation in IPF patients: a randomized trial of pulmonary rehabilitation. Lung 2014; 192:367-76. [PMID: 24705678 DOI: 10.1007/s00408-014-9566-9] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Accepted: 02/05/2014] [Indexed: 01/10/2023]
Abstract
BACKGROUND Patients with idiopathic pulmonary fibrosis (IPF) have severely limited exercise capacity due to dyspnea, hypoxemia, and abnormal lung mechanics. This pilot study was designed to determine whether pulmonary rehabilitation were efficacious in improving the 6-min walk test (6-MWT) distance, exercise oxygen uptake, respiratory muscle strength [maximum inspiratory pressure (MIP)], and dyspnea in patients with IPF. Underlying physiological mechanisms and effects of the intervention were investigated. METHODS Subjects were randomly assigned to a 3-month pulmonary rehabilitation program (n = 11) or to a control group (n = 10). All subjects initially underwent the 6-MWT and constant load exercise gas exchange studies. RESULTS Subjects in the rehabilitation group increased treadmill exercise [metabolic equivalent of task-minutes] over the first 14 sessions. Beneficial effects on physical function resulted in those who completed rehabilitation. Subjects who completed the program increased cycle ergometer time and maintained exercise oxygen consumption (exercise VO(2)) at the baseline level over 3 months, while the control group suffered a significant decrease in exercise VO(2). Rehabilitation subjects also increased their MIP. Plasma lactate doubled and brain natriuretic peptide levels increased significantly after exercise, as did the plasma amino acids glutamic acid, arginine, histidine, and methionine. These changes were associated with significant decreases in arterial oxygen saturation and increases in 15-F(2t)-isoprostanes after exercise. CONCLUSIONS Pulmonary rehabilitation effectively maintained exercise oxygen uptake over 3 months and lengthened constant load exercise time in patients with moderately severe IPF. Exercise endurance on cycle ergometry testing was limited by dyspnea and severe hypoxemia associated with systemic oxidant stress.
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Affiliation(s)
- Robert M Jackson
- Research Service (151), Miami VAHS, 1201 NW 16th Street, Miami, FL, 33125, USA,
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van der Plas MN, van Kan C, Blumenthal J, Jansen HM, Wells AU, Bresser P. Pulmonary vascular limitation to exercise and survival in idiopathic pulmonary fibrosis. Respirology 2013; 19:269-275. [DOI: 10.1111/resp.12206] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Revised: 03/18/2013] [Accepted: 09/17/2013] [Indexed: 11/29/2022]
Affiliation(s)
- Mart N. van der Plas
- Department of Respiratory Medicine; Onze Lieve Vrouwe Gasthuis; Amsterdam the Netherlands
- Department of Respiratory Medicine; Academic Medical Centre; University of Amsterdam; Amsterdam the Netherlands
| | - Coen van Kan
- Department of Respiratory Medicine; Onze Lieve Vrouwe Gasthuis; Amsterdam the Netherlands
| | - Judith Blumenthal
- Department of Respiratory Medicine; Onze Lieve Vrouwe Gasthuis; Amsterdam the Netherlands
- Department of Respiratory Medicine; Academic Medical Centre; University of Amsterdam; Amsterdam the Netherlands
| | - Henk M. Jansen
- Department of Respiratory Medicine; Academic Medical Centre; University of Amsterdam; Amsterdam the Netherlands
| | - Athol U. Wells
- Interstitial Lung Disease Unit; Royal Brompton Hospital; London UK
| | - Paul Bresser
- Department of Respiratory Medicine; Onze Lieve Vrouwe Gasthuis; Amsterdam the Netherlands
- Department of Respiratory Medicine; Academic Medical Centre; University of Amsterdam; Amsterdam the Netherlands
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The Role of Cardiopulmonary Exercise Test in IPF Prognosis. Pulm Med 2013; 2013:514817. [PMID: 24288606 PMCID: PMC3833281 DOI: 10.1155/2013/514817] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 07/25/2013] [Accepted: 07/26/2013] [Indexed: 11/19/2022] Open
Abstract
Background. In IPF, defects in lung mechanics and gas exchange manifest with exercise limitation due to dyspnea, the most prominent and disabling symptom. Aim. To evaluate the role of exercise testing through the 6MWT (6-minute walk test) and CPET (cardiopulmonary exercise testing) in the survival of patients with IPF. Methods. This is a prospective, observational study evaluating in 25 patients the relationship between exercise variables through both the 6MWT and CPET and survival. Results. By the end of the observational period 17 patients were alive (33% mortality). Observation ranged from 9 to 64 months. VE/VCO2 slope (slope of relation between minute ventilation and CO2 production), VO2 peak/kg (peak oxygen consumption/kg), VE/VCO2 ratio at anaerobic threshold, 6MWT distance, desaturation, and DLCO% were significant predictors of survival while VE/VCO2 slope and VO2 peak/kg had the strongest correlation with outcome. The optimal model for mortality risk estimation was VO2 peak/kg + DLCO% combined. Furthermore, VE/VCO2 slope and VO2 peak/kg were correlated with distance and desaturation during the 6MWT. Conclusion. The integration of oxygen consumption and diffusing capacity proved to be a reliable predictor of survival because both variables reflect major underlying physiologic determinants of exercise limitation.
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Normativa sobre el diagnóstico y tratamiento de la fibrosis pulmonar idiopática. Arch Bronconeumol 2013; 49:343-53. [DOI: 10.1016/j.arbres.2013.03.011] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2012] [Revised: 03/21/2013] [Accepted: 03/22/2013] [Indexed: 11/18/2022]
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Xaubet A, Ancochea J, Bollo E, Fernández-Fabrellas E, Franquet T, Molina-Molina M, Montero MA, Serrano-Mollar A. Guidelines for the Diagnosis and Treatment of Idiopathic Pulmonary Fibrosis. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.arbr.2013.06.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Pulmonary hypertension in patients with idiopathic pulmonary fibrosis - the predictive value of exercise capacity and gas exchange efficiency. PLoS One 2013; 8:e65643. [PMID: 23840349 PMCID: PMC3688763 DOI: 10.1371/journal.pone.0065643] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Accepted: 03/13/2013] [Indexed: 11/28/2022] Open
Abstract
Exercise capacity and survival of patients with IPF is potentially impaired by pulmonary hypertension. This study aims to investigate diagnostic and prognostic properties of gas exchange during exercise and lung function in IPF patients with or without pulmonary hypertension. In a multicentre setting, patients with IPF underwent right heart catheterization, cardiopulmonary exercise and lung function testing during their initial evaluation. Mortality follow up was evaluated. Seventy-three of 135 patients [82 males; median age of 64 (56; 72 years)] with IPF had pulmonary hypertension as assessed by right heart catheterization [median mean pulmonary arterial pressure 34 (27; 43) mmHg]. The presence of pulmonary hypertension was best predicted by gas exchange efficiency for carbon dioxide (cut off ≥152% predicted; area under the curve 0.94) and peak oxygen uptake (≤56% predicted; 0.83), followed by diffusing capacity. Resting lung volumes did not predict pulmonary hypertension. Survival was best predicted by the presence of pulmonary hypertension, followed by peak oxygen uptake [HR 0.96 (0.93; 0.98)]. Pulmonary hypertension in IPF patients is best predicted by gas exchange efficiency during exercise and peak oxygen uptake. In addition to invasively measured pulmonary arterial pressure, oxygen uptake at peak exercise predicts survival in this patient population.
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Aguilaniu B, Wallaert B. De l’interprétation de l’exploration fonctionnelle d’exercice (EFX) à la décision médicale. Rev Mal Respir 2013; 30:498-515. [DOI: 10.1016/j.rmr.2013.05.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Accepted: 05/05/2013] [Indexed: 11/27/2022]
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Holland AE, Hill CJ, Glaspole I, Goh N, Dowman L, McDonald CF. Impaired chronotropic response to 6-min walk test and reduced survival in interstitial lung disease. Respir Med 2013; 107:1066-72. [PMID: 23669412 DOI: 10.1016/j.rmed.2013.04.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 04/01/2013] [Accepted: 04/07/2013] [Indexed: 12/19/2022]
Abstract
BACKGROUND Reduced chronotropic response to maximal exercise has been associated with poor survival in people without respiratory disease. The contribution of chronotropic response to exercise limitation and survival in interstitial lung disease (ILD) is not well defined. This study investigated the relationships between chronotropic response during 6-min walk test, exercise capacity and survival in ILD. METHODS Eligible participants had ILD, were ambulant and free of heart failure and beta blocker therapy. Chronotropic response during the 6-min walk test was defined as peak heart rate (HR) minus resting HR. Survival was recorded at four years. RESULTS Sixty-two participants (40 idiopathic pulmonary fibrosis) were included, with mean (SD) TLCO 50(18)% predicted and 6-min walk distance (6MWD) 377 (127) metres. A smaller chronotropic response was associated with reduced 6MWD (r = 0.65, p < 0.001). Independent predictors of 6MWD were chronotropic response, peak oxygen uptake on cardiopulmonary exercise test; right ventricular systolic pressure on echocardiogram; and age. This model explained 83% of the variance in 6MWD, with 24% of the variance attributable to chronotropic response. A chronotropic response during 6-min walk test of less than 20 beats per minute was an independent predictor of death at four years (odds ratio 10.71, 95% confidence interval 2.67-42.94) in a model that also included oxygen desaturation and forced vital capacity. CONCLUSIONS Impaired chronotropic response to 6-min walk test is associated with reduced 6MWD and reduced survival in ILD, independent of physical fitness and pulmonary hypertension. Investigation of the mechanisms underlying attenuated HR response to exercise in ILD is warranted.
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Affiliation(s)
- Anne E Holland
- Alfred Health, VIC 3004, Australia; La Trobe University, VIC 3086, Australia; Institute for Breathing and Sleep, VIC 3084, Australia.
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Maher TM. A Clinical Approach to Diffuse Parenchymal Lung Disease. Immunol Allergy Clin North Am 2012; 32:453-72. [DOI: 10.1016/j.iac.2012.08.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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