1
|
Plachi F, Balzan FM, Gass R, Käfer KD, Santos AZ, Gazzana MB, Neder JA, Berton DC. Mechanisms and consequences of excess exercise ventilation in fibrosing interstitial lung disease. Respir Physiol Neurobiol 2024; 325:104255. [PMID: 38555042 DOI: 10.1016/j.resp.2024.104255] [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: 01/23/2024] [Revised: 03/18/2024] [Accepted: 03/26/2024] [Indexed: 04/02/2024]
Abstract
The causes and consequences of excess exercise ventilation (EEV) in patients with fibrosing interstitial lung disease (f-ILD) were explored. Twenty-eight adults with f-ILD and 13 controls performed an incremental cardiopulmonary exercise test. EEV was defined as ventilation-carbon dioxide output (⩒E-⩒CO2) slope ≥36 L/L. Patients showed lower pulmonary function and exercise capacity compared to controls. Lower DLCO was related to higher ⩒E-⩒CO2 slope in patients (P<0.05). 13/28 patients (46.4%) showed EEV, reporting higher dyspnea scores (P=0.033). Patients with EEV showed a higher dead space (VD)/tidal volume (VT) ratio while O2 saturation dropped to a greater extent during exercise compared to those without EEV. Higher breathing frequency and VT/inspiratory capacity ratio were observed during exercise in the former group (P<0.05). An exaggerated ventilatory response to exercise in patients with f-ILD is associated with a blunted decrease in the wasted ventilation in the physiological dead space and greater hypoxemia, prompting higher inspiratory constraints and breathlessness.
Collapse
Affiliation(s)
- Franciele Plachi
- Programa de Pós-Graduação em Ciências Pneumológicas, Universidade Federal do Rio Grande do Sul & Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Fernanda M Balzan
- Serviço de Emergência, Departamento de Fisioterapia, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Ricardo Gass
- Programa de Pós-Graduação em Ciências Pneumológicas, Universidade Federal do Rio Grande do Sul & Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Kimberli D Käfer
- Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Artur Z Santos
- Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Marcelo B Gazzana
- Programa de Pós-Graduação em Ciências Pneumológicas, Universidade Federal do Rio Grande do Sul & Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - J A Neder
- Pulmonary Function Laboratory and Respiratory Investigation Unit, Division of Respirology, Kingston Health Science Center & Queen's University, Kingston, ON, Canada
| | - Danilo C Berton
- Programa de Pós-Graduação em Ciências Pneumológicas, Universidade Federal do Rio Grande do Sul & Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil.
| |
Collapse
|
2
|
Averjanovaitė V, Gumbienė L, Zeleckienė I, Šileikienė V. Unmasking a Silent Threat: Improving Pulmonary Hypertension Screening Methods for Interstitial Lung Disease Patients. MEDICINA (KAUNAS, LITHUANIA) 2023; 60:58. [PMID: 38256318 PMCID: PMC10820938 DOI: 10.3390/medicina60010058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 12/23/2023] [Accepted: 12/26/2023] [Indexed: 01/24/2024]
Abstract
This article provides a comprehensive overview of the latest literature on the diagnostics and treatment of pulmonary hypertension (PH) associated with interstitial lung disease (ILD). Heightened suspicion for PH arises when the advancement of dyspnoea in ILD patients diverges from the expected pattern of decline in pulmonary function parameters. The complexity of PH associated with ILD (PH-ILD) diagnostics is emphasized by the limitations of transthoracic echocardiography in the ILD population, necessitating the exploration of alternative diagnostic approaches. Cardiac magnetic resonance imaging (MRI) emerges as a promising tool, offering insights into hemodynamic parameters and providing valuable prognostic information. The potential of biomarkers, alongside pulmonary function and cardiopulmonary exercise tests, is explored for enhanced diagnostic and prognostic precision. While specific treatments for PH-ILD remain limited, recent studies on inhaled treprostinil provide new hope for improved patient outcomes.
Collapse
Affiliation(s)
| | - Lina Gumbienė
- Clinic of Cardiac and Vascular Diseases, Faculty of Medicine, Institute of Clinical Medicine, Vilnius University, LT-03101 Vilnius, Lithuania;
| | | | - Virginija Šileikienė
- Clinic of Chest Diseases, Immunology and Allergology, Faculty of Medicine, Institute of Clinical Medicine, Vilnius University, LT-03101 Vilnius, Lithuania;
| |
Collapse
|
3
|
Pezzuto B, Agostoni P. The Current Role of Cardiopulmonary Exercise Test in the Diagnosis and Management of Pulmonary Hypertension. J Clin Med 2023; 12:5465. [PMID: 37685532 PMCID: PMC10487723 DOI: 10.3390/jcm12175465] [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: 06/26/2023] [Revised: 08/01/2023] [Accepted: 08/14/2023] [Indexed: 09/10/2023] Open
Abstract
Pulmonary arterial hypertension (PAH) is a progressive disease with a poor prognosis if left untreated. Despite remarkable achievements in understanding disease pathophysiology, specific treatments, and therapeutic strategies, we are still far from a definitive cure for the disease, and numerous evidences have underlined the importance of early diagnosis and treatment to improve the prognosis. Cardiopulmonary exercise testing (CPET) is the gold standard for assessing functional capacity and evaluating the pathophysiological mechanisms underlying exercise limitation. As effort dyspnea is the earliest and one of the main clinical manifestations of PAH, CPET has been shown to provide valid support in early detection, differential diagnosis, and prognostic stratification of PAH patients, being a useful tool in both the first approach to patients and follow-up. The purpose of this review is to present the current applications of CPET in pulmonary hypertension and to propose possible future utilization to be further investigated.
Collapse
Affiliation(s)
| | - Piergiuseppe Agostoni
- Centro Cardiologico Monzino IRCCS, 20138 Milan, Italy;
- Department of Clinical Sciences and Community Health, University of Milan, 20122 Milan, Italy
| |
Collapse
|
4
|
Value of Cardiopulmonary Exercise Testing in Prognostic Assessment of Patients with Interstitial Lung Diseases. J Clin Med 2022; 11:jcm11061609. [PMID: 35329935 PMCID: PMC8954900 DOI: 10.3390/jcm11061609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 03/01/2022] [Accepted: 03/11/2022] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Interstitial lung disease (ILD) is associated with high rates of comorbidities and non-infectious lung disease mortality. Against this background, we aimed to evaluate the prognostic capacity of lung function and cardiopulmonary exercise testing (CPET) in patients with ILD. MATERIALS AND METHODS A total of 183 patients with diverse ILD entities were included in this monocentric analysis. Prediction models were determined using Cox regression models with age, sex, body mass index (BMI), and all parameters from pulmonary function testing and CPET. Kaplan-Meier curves were plotted for selected variables. RESULTS The median follow-up period was 3.0 ± 2.5 years. Arterial hypertension (57%) and pulmonary hypertension (38%) were the leading comorbidities. The Charlson comorbidity index score was 2 ± 2 points. The 3-year and 5-year survival rates were 68% and 50%, respectively. VO2peak (mL/kg/min or %pred.) was identified as a significant prognostic parameter in patients with ILD. The cut-off value for discriminating mortality was 61%. CONCLUSION The present analyses consistently revealed the high prognostic power of VO2peak %pred. and other parameters evaluating breathing efficacy (VÉ/VCO2 @AT und VÉ/VCO2 slope) in ILD patients. VO2peak %pred., in contrast to the established prognostic values FVC %pred., DLCO/KCO %pred., and GAP, showed an even higher prognostic ability in all statistical models.
Collapse
|
5
|
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 ).
Collapse
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
| |
Collapse
|
6
|
Dipla K, Boutou AK, Markopoulou A, Papadopoulos S, Kritikou S, Pitsiou G, Stanopoulos I, Kioumis I, Zafeiridis A. Differences in cerebral oxygenation during exercise in patients with idiopathic pulmonary fibrosis with and without exertional hypoxemia: does exercise intensity matter? Pulmonology 2021; 29:221-229. [PMID: 34274251 DOI: 10.1016/j.pulmoe.2021.06.006] [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: 01/20/2021] [Revised: 06/08/2021] [Accepted: 06/15/2021] [Indexed: 10/20/2022] Open
Abstract
INTRODUCTION AND OBJECTIVES Patients with idiopathic pulmonary fibrosis (IPF) present respiratory derangements at rest and during exercise, accompanied by exercise intolerance. Some patients may develop profound exertional desaturation even without resting hypoxemia. Evidence suggests the involvement of reduced cerebral-oxygenation in exercise intolerance. We aimed to examine (i) differences in cerebral-oxygenation during exercise between IPF patients with and without isolated exertional desaturation, (ii) whether the impairments in cerebral-oxygenation are detected at similar exercise intensity, and (iii) correlations between cerebral-oxygenation indices, disease severity, and 6-min walk test (6MWT). MATERIALS AND METHODS Patients with IPF (n = 24; 62.1 ± 9.3 years) without resting hypoxemia underwent cardiopulmonary exercise testing (CPET) with cerebral-oxygenation monitoring via near-infrared-spectroscopy (NIRS). Βased on their pulse-oxymetry saturation (SpO2) during CPET, patients were divided into the "exertional-desaturators" group (SpO2nadir≤89% and ≥6% drop in SpO2) and the "non-exertional-desaturators" group (SpO2nadir≥90% and ≤5% drop). RESULTS During CPET, the "exertional-desaturators" group exhibited lower oxygenated-hemoglobin (-0.67 ± 1.48 vs. 0.69 ± 1.75 μmol/l; p < 0.05) and higher deoxygenated-hemoglobin (1.67 ± 1.13 vs. 0.17 ± 0.62 μmol/l; p < 0.001) than the "non-exertional-desaturators" group. A different pattern (p < 0.01) in cerebral-oxygenation responses was observed in the two groups. In exertional-desaturators oxygenated-hemoglobin declined below baseline even at low/moderate-intensity exercise (p < 0.05), whereas, in non-exertional-desaturators cerebral-oxygenation declined (p < 0.05) at high-intensity exercise. Cerebral-NIRS indices correlated (p < 0.05) with CPET-duration, dyspnea, diffusion capacity, and 6MWT. CONCLUSIONS During incremental exercise, patients with IPF and exertional desaturation present a significant decline in cerebral-oxygenation even during low-intensity exercise. Our findings support the implementation of longer-duration rehabilitation programs in IPF so that lower intensity exercise can be applied at the initial stages. (NCT03683082).
Collapse
Affiliation(s)
- Konstantina Dipla
- Exercise Physiology & Biochemistry Laboratory, Dept. of Sport Sciences at Serres, Aristotle University of Thessaloniki, Ippokratous 22, Ag. Ioannis, Serres 621 22, Greece.
| | - Afroditi K Boutou
- Department of Respiratory Medicine, G. Papanikolaou Hospital, Thessaloniki, Greece
| | | | - Stavros Papadopoulos
- Exercise Physiology & Biochemistry Laboratory, Dept. of Sport Sciences at Serres, Aristotle University of Thessaloniki, Ippokratous 22, Ag. Ioannis, Serres 621 22, Greece
| | - Stella Kritikou
- Exercise Physiology & Biochemistry Laboratory, Dept. of Sport Sciences at Serres, Aristotle University of Thessaloniki, Ippokratous 22, Ag. Ioannis, Serres 621 22, Greece
| | - Georgia Pitsiou
- Department of Respiratory Failure, Aristotle University of Thessaloniki, Greece
| | - Ioannis Stanopoulos
- Department of Respiratory Failure, Aristotle University of Thessaloniki, Greece
| | - Ioannis Kioumis
- Department of Respiratory Failure, Aristotle University of Thessaloniki, Greece
| | - Andreas Zafeiridis
- Exercise Physiology & Biochemistry Laboratory, Dept. of Sport Sciences at Serres, Aristotle University of Thessaloniki, Ippokratous 22, Ag. Ioannis, Serres 621 22, Greece
| |
Collapse
|
7
|
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.
Collapse
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.
| |
Collapse
|
8
|
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.
Collapse
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
| |
Collapse
|
9
|
Westhoff M, Litterst P, Ewert R. Cardiopulmonary Exercise Testing in Combined Pulmonary Fibrosis and Emphysema. Respiration 2021; 100:395-403. [PMID: 33657565 DOI: 10.1159/000513848] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 12/16/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Combined pulmonary fibrosis and emphysema (CPFE) is a distinct entity among fibrosing lung diseases with a high risk for lung cancer and pulmonary hypertension (PH). Notably, concomitant PH was identified as a negative prognostic indicator that could help with early diagnosis to provide important information regarding prognosis. OBJECTIVES The current study aimed to determine whether cardiopulmonary exercise testing (CPET) can be helpful in differentiating patients having CPFE with and without PH. METHODS Patients diagnosed with CPFE in 2 German cities (Hemer and Greifswald) over a period of 10 years were included herein. CPET parameters, such as peak oxygen uptake (peak VO2), functional dead space ventilation (VDf/VT), alveolar-arterial oxygen difference (AaDO2), arterial-end-tidal CO2 difference [P(a-ET)CO2] at peak exercise, and the minute ventilation-carbon dioxide production relationship (VE/VCO2 slope), were compared between patients with and without PH. RESULTS A total of 41 patients with CPET (22 with PH, 19 without PH) were analyzed. Right heart catheterization was performed in 15 of 41 patients without clinically relevant complications. Significant differences in peak VO2 (861 ± 190 vs. 1,397 ± 439 mL), VO2/kg body weight/min (10.8 ± 2.6 vs. 17.4 ± 5.2 mL), peak AaDO2 (72.3 ± 7.3 vs. 46.3 ± 14.2 mm Hg), VE/VCO2 slope (70.1 ± 31.5 vs. 39.6 ± 9.6), and peak P(a-ET)tCO2 (13.9 ± 3.5 vs. 8.1 ± 3.6 mm Hg) were observed between patients with and without PH (p < 0.001). Patients with PH had significantly higher VDf/VT at rest, VT1, and at peak exercise (65.6 ± 16.8% vs. 47.2 ± 11.6%; p < 0.001) than those without PH. A cutoff value of 44 for VE/VCO2 slope had a sensitivity and specificity of 94.7 and 72.7%, while a cutoff value of 11 mm Hg for P(a-ET)CO2 in combination with peak AaDO2 >60 mm Hg had a specificity and sensitivity of 95.5 and 84.2%, respectively. Combining peak AaDO2 >60 mm Hg with peak VO2/body weight/min <16.5 mL/kg/min provided a sensitivity and specificity of 100 and 95.5%, respectively. CONCLUSION This study provided initial data on CPET among patients having CPFE with and without PH. CPET can help noninvasively detect PH and identify patients at risk. AaDO2 at peak exercise, VE/VCO2 slope, peak P(a-ET)CO2, and peak VO2 were parameters that had high sensitivity and, when combined, high specificity.
Collapse
Affiliation(s)
- Michael Westhoff
- Department of Pneumology, Sleep and Respiratory Medicine, Hemer Lung Clinic, Hemer, Germany, .,University Witten/Herdecke, Witten, Germany,
| | - Patric Litterst
- Department of Pneumology, Sleep and Respiratory Medicine, Hemer Lung Clinic, Hemer, Germany
| | - Ralf Ewert
- Department of Internal Medicine, University Medicine, Greifswald, Germany
| |
Collapse
|
10
|
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
Collapse
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
| |
Collapse
|
11
|
Pulmonary Vascular and Right Ventricular Burden During Exercise in Interstitial Lung Disease. Chest 2020; 158:350-358. [PMID: 32173491 DOI: 10.1016/j.chest.2020.02.043] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 12/25/2019] [Accepted: 02/03/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Pulmonary hypertension (PH) adversely affects patient's exercise capacity in interstitial lung disease (ILD). The impact of pulmonary vascular and right ventricular (RV) dysfunction, however, has traditionally been believed to be mild and clinically relevant principally in advanced lung disease states. RESEARCH QUESTION The aim of this study was to evaluate the relative contributions of pulmonary mechanics, pulmonary vascular function, and RV function to the ILD exercise limit. STUDY DESIGN AND METHODS Forty-nine patients with ILD who underwent resting right heart catheterization followed by invasive exercise testing were evaluated. Patients with PH at rest (ILD + rPH) and with PH diagnosed exclusively during exercise (ILD + ePH) were contrasted with ILD patients without PH (ILD non-PH). RESULTS Peak oxygen consumption was reduced in ILD + rPH (61 ± 10% predicted) and ILD + ePH (67 ± 13% predicted) compared with ILD non-PH (81 ± 16% predicted; P < .001 and P = .016, respectively). Each ILD hemodynamic phenotype presented distinct patterns of dynamic changes of pulmonary vascular compliance relative to pulmonary vascular resistance from rest to peak exercise. Peak RV stroke work index was increased in ILD + ePH (24.7 ± 8.2 g/m2 per beat) and ILD + rPH (30.9 ± 6.1 g/m2 per beat) compared with ILD non-PH (18.3 ± 6.4 g/m2 per beat; P = .020 and P = .014). Ventilatory reserve was reduced in ILD + rPH compared with the other groups at the anaerobic threshold, but it was similar between ILD + ePH and ILD non-PH at the anaerobic threshold (0.32 ± 0.13 vs 0.30 ± 0.11; P = .921) and at peak exercise (0.70 ± 0.17 vs 0.73 ± 0.24; P = .872). INTERPRETATION ILD with resting and exercise PH is associated with increased exercise RV work, reduced pulmonary vascular reserve, and reduced peak oxygen consumption. The findings highlight the role of pulmonary vascular and RV burden to ILD exercise limit.
Collapse
|
12
|
Plantier L, Delclaux C. Increased physiological dead space at exercise is a marker of mild pulmonary or cardiovascular disease in dyspneic subjects. Eur Clin Respir J 2018; 5:1492842. [PMID: 30627360 PMCID: PMC6314086 DOI: 10.1080/20018525.2018.1492842] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 06/20/2018] [Indexed: 12/13/2022] Open
Abstract
Background: The characteristics of cardiopulmonary exercise testing (CPET)-derived parameters for the differential diagnosis of exertional dyspnea are not well known. Objectives: We hypothesized that increased physiological dead space ventilation (VD/Vt) is a marker for mild pulmonary or cardiovascular disease in patients with exertional dyspnea. Design: We used receiver operating characteristic analysis to determine the performance of individual CPET parameters for identifying subjects with either mild pulmonary or cardiovascular disease, among 77 subjects with mild-to-moderate exertional dyspnea (modified Medical Research Council scale 1–2). Results: In comparison with subjects without disease, subjects with pulmonary disease (n = 31) had higher VE/V′CO2 slope, higher VD/Vt, and lower ventilatory reserve. Subjects with cardiovascular disease (n = 14) had lower heart rate and cardiovascular double product and higher VD/Vt at peak exercise. At a threshold of 28%, the sensitivity and specificity of VD/Vt at peak exercise for identifying pulmonary or cardiovascular disease were 89% (95% CI: 64–98%) and 72% (95% CI: 46–89%), respectively. Conclusions: Increased physiological VD/Vt at exercise is a sensitive and specific marker of mild pulmonary or cardiovascular disease in dyspneic subjects.
Collapse
Affiliation(s)
- Laurent Plantier
- INSERM UMR 1152, Labex Inflamex, Paris, France.,Université Paris Diderot, PRES Sorbonne Paris Cité, Paris, France.,Assistance-Publique-Hôpitaux de Paris, Hôpital Bichat-Claude Bernard, Service de Physiologie-Explorations Fonctionnelles, Paris, France
| | - Christophe Delclaux
- Université Paris Diderot, PRES Sorbonne Paris Cité, Paris, France.,Assistance-Publique-Hôpitaux de Paris, Hôpital Robert Debré, Service de Physiologie Pédiatrique, Paris, France
| |
Collapse
|
13
|
Plantier L, Cazes A, Dinh-Xuan AT, Bancal C, Marchand-Adam S, Crestani B. Physiology of the lung in idiopathic pulmonary fibrosis. Eur Respir Rev 2018; 27:27/147/170062. [PMID: 29367408 PMCID: PMC9489199 DOI: 10.1183/16000617.0062-2017] [Citation(s) in RCA: 146] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 10/15/2017] [Indexed: 12/19/2022] Open
Abstract
The clinical expression of idiopathic pulmonary fibrosis (IPF) is directly related to multiple alterations in lung function. These alterations derive from a complex disease process affecting all compartments of the lower respiratory system, from the conducting airways to the lung vasculature. In this article we review the profound alterations in lung mechanics (reduced lung compliance and lung volumes), pulmonary gas exchange (reduced diffusing capacity, increased dead space ventilation, chronic arterial hypoxaemia) and airway physiology (increased cough reflex and increased airway volume), as well as pulmonary haemodynamics related to IPF. The relative contribution of these alterations to exertional limitation and dyspnoea in IPF is discussed. Physiological impairment in IPF is complex and involves all compartments of the respiratory systemhttp://ow.ly/gyao30hdHUb
Collapse
|
14
|
Layton AM, Armstrong HF, Baldwin MR, Podolanczuk AJ, Pieszchata NM, Singer JP, Arcasoy SM, Meza KS, D'Ovidio F, Lederer DJ. Frailty and maximal exercise capacity in adult lung transplant candidates. Respir Med 2017; 131:70-76. [PMID: 28947046 DOI: 10.1016/j.rmed.2017.08.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 08/07/2017] [Accepted: 08/08/2017] [Indexed: 02/06/2023]
Abstract
BACKGROUND Frail lung transplant candidates are more likely to be delisted or die without receiving a transplant. Further knowledge of what frailty represents in this population will assist in developing interventions to prevent frailty from developing. We set out to determine whether frail lung transplant candidates have reduced exercise capacity independent of disease severity and diagnosis. METHODS Sixty-eight adult lung transplant candidates underwent cardiopulmonary exercise testing (CPET) and a frailty assessment (Fried's Frailty Phenotype (FFP)). Primary outcomes were peak workload and peak aerobic capacity (V˙O2). We used linear regression to adjust for age, gender, diagnosis, and lung allocation score (LAS). RESULTS The mean ± SD age was 57 ± 11 years, 51% were women, 57% had interstitial lung disease, 32% had chronic obstructive pulmonary disease, 11% had cystic fibrosis, and the mean LAS was 40.2 (range 19.2-94.5). In adjusted models, peak workload decreased by 10 W (95% CI 4.7 to 14.6) and peak V˙O2 decreased by 1.8 mL/kg/min (95% CI 0.6 to 2.9) per 1 unit increment in FFP score. After adjustment, exercise tolerance was 38 W lower (95% CI 18.4 to 58.1) and peak V˙O2 was 8.5 mL/kg/min lower (95% CI 3.3 to 13.7) among frail participants compared to non-frail participants. Frailty accounted for 16% of the variance (R2) of watts and 19% of the variance of V˙O2 in adjusted models. CONCLUSION Frailty contributes to reduced exercise capacity among lung transplant candidates independent of disease severity.
Collapse
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 Epidemiology, Mailman School of Public Health, Columbia University Medical Center, New York, NY, USA
| | - Matthew R Baldwin
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Columbia University Medical Center, New York, NY, USA
| | - Anna J Podolanczuk
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Columbia University Medical Center, New York, NY, USA
| | - Nicole M Pieszchata
- Department of Rehabilitation and Regenerative Medicine, Columbia University Medical Center, New York, NY, USA
| | - Jonathan P Singer
- Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Selim M Arcasoy
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Columbia University Medical Center, New York, NY, USA
| | | | - Frank D'Ovidio
- Department of Surgery, Columbia University Medical Center, New York, NY, USA
| | - David J Lederer
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Columbia University Medical Center, New York, NY, USA; Department of Epidemiology, Mailman School of Public Health, Columbia University Medical Center, New York, NY, USA
| |
Collapse
|
15
|
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.
Collapse
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
| |
Collapse
|
16
|
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.
Collapse
|
17
|
Nakazawa A, Cox NS, Holland AE. Current best practice in rehabilitation in interstitial lung disease. Ther Adv Respir Dis 2017; 11:115-128. [PMID: 28150539 PMCID: PMC5933636 DOI: 10.1177/1753465816676048] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Interstitial lung disease (ILD) is a group of chronic respiratory diseases characterized by dyspnoea on exertion and decline in health-related quality of life (HRQL). People with ILD experience significant exercise limitation with contributors that include ventilatory limitation, impaired gas exchange, decreased cardiac function and skeletal muscle dysfunction. Pulmonary rehabilitation (PR) is well established in patients with chronic obstructive pulmonary disease (COPD) as a means to overcome exercise limitation and improve activity-related dyspnoea. There is increasing evidence for similar effects of PR in people with ILD. This review discusses the evidence for PR in ILD, outlines the essential components of PR in this population, and highlights special considerations for exercise training in people with ILD. Possible future directions for PR research in people with ILD are explored.
Collapse
Affiliation(s)
- Atsuhito Nakazawa
- Physiotherapy, School of Allied Health, La Trobe
University, Melbourne, Victoria, Australia
| | - Narelle S. Cox
- Physiotherapy, School of Allied Health, La Trobe
University, Melbourne, Victoria, Australia Institute for Breathing and
Sleep, Melbourne, Victoria, Australia
| | - Anne E. Holland
- La Trobe University & Alfred Health, Level
4, The Alfred Centre, 99 Commercial Road, Melbourne, Victoria 3004,
Australia and Physiotherapy, School of Allied Health, La Trobe University,
Melbourne, Victoria, Australia
| |
Collapse
|
18
|
Pulmonary hypertension associated with chronic obstructive lung disease and idiopathic pulmonary fibrosis. Curr Opin Pulm Med 2015; 20:414-20. [PMID: 25046428 DOI: 10.1097/mcp.0000000000000084] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE OF REVIEW Severe pulmonary hypertension worsens the prognosis of patients with chronic obstructive pulmonary disease (COPD) or idiopathic pulmonary fibrosis (IPF). With the aim of better understanding the pathogenesis of this event and identifying the possible targets for therapeutic intervention, a great deal of clinical and translational research is now focused on this relevant field of medicine. RECENT FINDINGS Some studies that were published last year have helped to better define the clinical and physiological profiles of patients with COPD or IPF and severe pulmonary hypertension. The importance of pulmonary rehabilitation was confirmed, particularly in patients with pulmonary hypertension associated with IPF. Information on the use of drugs approved for the treatment of pulmonary arterial hypertension is still very limited, because of some limitations and selection biases in the studies' design. New strategies (i.e. the use of fasudil or sepiapterin in pulmonary hypertension associated with IPF) have been evaluated in animal models. SUMMARY Pulmonary hypertension in COPD or IPF may range from mild to severe. When pulmonary hypertension is more advanced, it can drive a poor outcome. Therefore, future studies should focus on this subset.
Collapse
|
19
|
de Boer K, Lee JS. Under-recognised co-morbidities in idiopathic pulmonary fibrosis: A review. Respirology 2015; 21:995-1004. [PMID: 26365251 DOI: 10.1111/resp.12622] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 04/17/2015] [Accepted: 07/08/2015] [Indexed: 12/30/2022]
Abstract
Co-morbidities in idiopathic pulmonary fibrosis are common. These co-morbidities include obstructive sleep apnoea, gastro-oesophageal reflux disease, pulmonary hypertension and depression. The presence of co-morbidities among patients with idiopathic pulmonary fibrosis contributes to worse quality of life, morbidity and mortality. Despite the high prevalence of certain co-morbidities in idiopathic pulmonary fibrosis, the optimal screening and management of many of these conditions remains unclear. The impact of co-morbidities on this patient population is becoming more apparent. Their relevance will only increase as significant effort is being made to develop novel therapeutics that will alter the disease trajectory of patients with idiopathic pulmonary fibrosis. The purpose of this review is to focus on the epidemiology, pathophysiology, diagnosis and management of select co-morbidities, including obstructive sleep apnoea, gastro-oesophageal reflux disease, pulmonary hypertension and depression, in idiopathic pulmonary fibrosis.
Collapse
Affiliation(s)
- Kaïssa de Boer
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, San Francisco, California, USA.,Department of Medicine, Division of Respirology, University of Ottawa, Ottawa, Ontario, Canada
| | - Joyce S Lee
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, San Francisco, California, USA
| |
Collapse
|
20
|
Update in Exercise Testing. CURRENT PHYSICAL MEDICINE AND REHABILITATION REPORTS 2015. [DOI: 10.1007/s40141-015-0095-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
21
|
Hayes D, Black SM, Tobias JD, Kirkby S, Mansour HM, Whitson BA. Influence of Pulmonary Hypertension on Patients With Idiopathic Pulmonary Fibrosis Awaiting Lung Transplantation. Ann Thorac Surg 2015; 101:246-52. [PMID: 26319484 DOI: 10.1016/j.athoracsur.2015.06.024] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 05/27/2015] [Accepted: 06/01/2015] [Indexed: 11/17/2022]
Abstract
BACKGROUND The influence of varying levels of pulmonary hypertension (PH) on survival in idiopathic pulmonary fibrosis is not well defined. METHODS The United Network for Organ Sharing database was queried from 2005 to 2013 to identify first-time lung transplant candidates listed for lung transplantation who were tracked from waitlist entry date until death or censoring to determine the influence of PH on patients with advanced lung disease. Using data for right heart catheterization measurements, mild PH was defined as mean pulmonary artery pressure of 25 mm Hg or more, and severe as 35 mm Hg or more. RESULTS Of 6,657 idiopathic pulmonary fibrosis patients, 6,651 were used for univariate analysis, 6,126 for Kaplan-Meier survival function, 6,013 for multivariate Cox models, and 5,186 (mild PH) and 2,014 (severe PH) for propensity score matching, respectively. Univariate Cox proportional hazards analysis found significant differences in survival for mild PH (hazard ratio [HR] 1.689, 95% confidence interval [CI]: 1.434 to 1.988, p < 0.001) and severe PH (HR 2.068, 95% CI: 1.715 to 2.493, p < 0.001). Further assessment by multivariate Cox models identified significant risk for death for mild PH (HR 1.433, 95% CI: 1.203 to 1.706, p < 0.001) and severe PH (HR 1.597, 95% CI: 1.308 to 1.949, p < 0.001). Propensity score matching confirmed the risk for death for mild PH (HR 1.530, 95% CI: 1.189 to 1.969, p = 0.001) and severe PH (HR 2.103, 95% CI: 1.436 to 3.078, p < 0.001). CONCLUSIONS The manifestation of PH, even with mild severity, is associated with significantly increased risk for death among patients with idiopathic pulmonary fibrosis awaiting lung transplantation, so referral should be considered early in the disease course.
Collapse
Affiliation(s)
- Don Hayes
- Department of Pediatrics, Ohio State University College of Medicine, Columbus, Ohio; Department of Internal Medicine, Ohio State University College of Medicine, Columbus, Ohio; Section of Pulmonary Medicine, Nationwide Children's Hospital, Columbus, Ohio.
| | - Sylvester M Black
- Department of Surgery, Ohio State University College of Medicine, Columbus, Ohio
| | - Joseph D Tobias
- Department of Anesthesiology, Ohio State University College of Medicine, Columbus, Ohio; Department of Anesthesiology and Pain Medicine, Nationwide Children's Hospital, Columbus, Ohio
| | - Stephen Kirkby
- Department of Pediatrics, Ohio State University College of Medicine, Columbus, Ohio; Department of Internal Medicine, Ohio State University College of Medicine, Columbus, Ohio; Section of Pulmonary Medicine, Nationwide Children's Hospital, Columbus, Ohio
| | - Heidi M Mansour
- Skaggs Pharmaceutical Sciences Center, University of Arizona College of Pharmacy, Tucson, Arizona
| | - Bryan A Whitson
- Department of Surgery, Ohio State University College of Medicine, Columbus, Ohio
| |
Collapse
|
22
|
Maher TM, Piper A, Song Y, Restrepo MI, Eves ND. Year in review 2014: Interstitial lung disease, physiology, sleep and ventilation, acute respiratory distress syndrome, cystic fibrosis, bronchiectasis and rare lung disease. Respirology 2015; 20:834-45. [DOI: 10.1111/resp.12532] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 03/06/2015] [Indexed: 12/21/2022]
Affiliation(s)
- Toby M. Maher
- National Institute for Health Research Respiratory Biomedical Research Unit; Royal Brompton Hospital; London UK
- Fibrosis Research Group; Centre for Leukocyte Biology; National Heart Lung Institute; Imperial College; London UK
| | - Amanda Piper
- Department of Respiratory and Sleep Medicine; Royal Prince Alfred Hospital; Sydney New South Wales Australia
- Circadian Group; Woolcock Institute of Medical Research; University of Sydney; Sydney New South Wales Australia
| | - Yuanlin Song
- Department of Pulmonary Medicine; Zhongshan Hospital, and Qingpu Branch; Fudan University; Shanghai China
| | - Marcos I. Restrepo
- South Texas Veterans Health Care System; University of Texas Health Science Center; San Antonio Texas USA
| | - Neil D. Eves
- Centre for Heart, Lung and Vascular Health; School of Health and Exercise Sciences; Faculty of Health and Social Development; University of British Columbia; Kelowna British Columbia Canada
| |
Collapse
|
23
|
Effect of pulmonary hypertension on survival in patients with idiopathic pulmonary fibrosis after lung transplantation: An analysis of the United Network of Organ Sharing registry. J Heart Lung Transplant 2015; 34:430-7. [DOI: 10.1016/j.healun.2014.09.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 08/20/2014] [Accepted: 09/03/2014] [Indexed: 11/23/2022] Open
|
24
|
The Role of Exercise Testing in the Modern Management of Pulmonary Arterial Hypertension. Diseases 2014. [DOI: 10.3390/diseases2020120] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|