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McLafferty FS, Gray AL. Lung transplant referral considerations for individuals with cystic fibrosis. Curr Opin Pulm Med 2024:00063198-990000000-00192. [PMID: 39132757 DOI: 10.1097/mcp.0000000000001111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/13/2024]
Abstract
PURPOSE OF REVIEW The cystic fibrosis (CF) Foundation issued guidelines to promote timely lung transplant referral for people with cystic fibrosis (pwCF) in 2019. Since then more has been published to help refine this complex decision. The goal of this review is to summarize the recent literature informing disease severity in CF, barriers to referral for pwCF and guide timely and appropriate lung transplant referrals. RECENT FINDINGS Existing guidelines utilize the degree of airflow limitation as the primary criteria to refer for lung transplant, yet this variable has some prognostic uncertainty. Novel prognostic tools may provide more reliable metrics for predicting who with CF is at greatest risk of dying from their lung disease and could be used as an indicator for when to refer. In addition, updated analyses of national registry data have highlighted the significance of hemoptysis, low body mass index, and extra-pulmonary organ failure, as important prognostic markers. PwCF with these complications have historically been under-referred for lung transplant despite data suggesting lung transplant can be safe for some in these populations. Early referral should be considered in the presence of these complications. SUMMARY This review builds on existing guidelines by incorporating novel data to better determine when lung transplant referral is most appropriate. Improved prognostic tools are still needed to decrease the chances of pwCF dying without consideration of lung transplant. It is still unclear how novel therapies for CF may change the need and timing for lung transplant referral.
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Affiliation(s)
- Fred S McLafferty
- Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado - Anschutz Medical Campus Aurora, Colorado, USA
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2
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Radtke T, Urquhart DS, Braun J, Barry PJ, Waller I, Petch N, Mei-Zahav M, Kramer MR, Hua-Huy T, Dinh-Xuan AT, Innes JA, McArthur S, Sovtic A, Gojsina B, Verges S, de Maat T, Morrison L, Wood J, Crute S, Williams CA, Tomlinson OW, Bar-Yoseph R, Hebestreit A, Quon BS, Kwong E, Saynor ZL, Causer AJ, Stephenson AL, Schneiderman JE, Shaw M, Dwyer T, Stevens D, Remus N, Douvry B, Foster K, Benden C, Ratjen F, Hebestreit H. Cardiopulmonary Exercise Testing Provides Prognostic Information in Advanced Cystic Fibrosis Lung Disease. Ann Am Thorac Soc 2024; 21:411-420. [PMID: 37879036 PMCID: PMC10913772 DOI: 10.1513/annalsats.202304-317oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 10/25/2023] [Indexed: 10/27/2023] Open
Abstract
Rationale: Cardiopulmonary exercise testing (CPET) provides prognostic information in cystic fibrosis (CF); however, its prognostic value for patients with advanced CF lung disease is unknown. Objectives: To determine the prognostic value of CPET on the risk of death or lung transplant (LTX) within 2 years. Methods: We retrospectively collected data from 20 CF centers in Asia, Australia, Europe, and North America on patients with a forced expiratory volume in 1 second (FEV1) ⩽ 40% predicted who performed a cycle ergometer CPET between January 2008 and December 2017. Time to death/LTX was analyzed using mixed Cox proportional hazards regression. Conditional inference trees were modeled to identify subgroups with increased risk of death/LTX. Results: In total, 174 patients (FEV1, 30.9% ± 5.8% predicted) were included. Forty-four patients (25.5%) died or underwent LTX. Cox regression analysis adjusted for age, sex, and FEV1 revealed percentage predicted peak oxygen uptake ([Formula: see text]o2peak) and peak work rate (Wpeak) as significant predictors of death/LTX: adjusted hazard ratios per each additional 10% predicted were 0.60 (95% confidence interval, 0.43-0.90; P = 0.008) and 0.60 (0.48-0.82; P < 0.001). Tree-structured regression models, including a set of 11 prognostic factors for survival, identified Wpeak to be most strongly associated with 2-year risk of death/LTX. Probability of death/LTX was 45.2% for those with a Wpeak ⩽ 49.2% predicted versus 10.9% for those with a Wpeak > 49.2% predicted (P < 0.001). Conclusions: CPET provides prognostic information in advanced CF lung disease, and Wpeak appears to be a promising marker for LTX referral and candidate selection.
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Affiliation(s)
- Thomas Radtke
- Division of Chronic Disease Epidemiology, Epidemiology, Biostatistics and Prevention Institute, and
| | - Don S. Urquhart
- Department of Paediatric Respiratory and Sleep Medicine, Royal Hospital for Children and Young People, Edinburgh, United Kingdom
| | - Julia Braun
- Division of Chronic Disease Epidemiology, Epidemiology, Biostatistics and Prevention Institute, and
| | - Peter J. Barry
- Manchester Adult Cystic Fibrosis Centre, Manchester University NHS Foundation Trust, Wythenshawe Hospital, Manchester, United Kingdom
| | - Ian Waller
- Manchester Adult Cystic Fibrosis Centre, Manchester University NHS Foundation Trust, Wythenshawe Hospital, Manchester, United Kingdom
| | - Nicole Petch
- Manchester Adult Cystic Fibrosis Centre, Manchester University NHS Foundation Trust, Wythenshawe Hospital, Manchester, United Kingdom
| | - Meir Mei-Zahav
- Pulmonary Institute, Schneider Children’s Medical Center of Israel and Rabin Medical Center, Beilinson Hospital, Petach Tikva, Israel
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Mordechai R. Kramer
- Pulmonary Institute, Schneider Children’s Medical Center of Israel and Rabin Medical Center, Beilinson Hospital, Petach Tikva, Israel
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Thong Hua-Huy
- Service de Physiologie-Explorations Fonctionnelles, Hôpital Cochin, AP-HP, Université Paris Descartes, Paris, France
| | - Anh Tuan Dinh-Xuan
- Service de Physiologie-Explorations Fonctionnelles, Hôpital Cochin, AP-HP, Université Paris Descartes, Paris, France
| | - J. Alastair Innes
- Scottish Adult Cystic Fibrosis Service, Western General Hospital, and
| | - Sara McArthur
- Respiratory Physiology Service, NHS Lothian, Edinburgh, United Kingdom
| | - Aleksandar Sovtic
- Mother and Child Health Institute, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Bojana Gojsina
- Mother and Child Health Institute, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Samuel Verges
- University Grenoble Alpes, INSERM, CHU Grenoble Alpes, HP2 Laboratory, Grenoble, France
| | - Tanguy de Maat
- University Grenoble Alpes, INSERM, CHU Grenoble Alpes, HP2 Laboratory, Grenoble, France
| | - Lisa Morrison
- West of Scotland Adult Cystic Fibrosis Unit, Queen Elizabeth University Hospital, Glasgow, United Kingdom
| | - Jamie Wood
- Rehabilitation and Human Performance, Icahn School of Medicine at Mount Sinai, New York, New York
- Physiotherapy Department, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia
| | - Samantha Crute
- Physiotherapy Department, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia
| | - Craig A. Williams
- Children’s Health and Exercise Research Centre, Department of Public Health and Sports Science, University of Exeter, Exeter, United Kingdom
| | - Owen W. Tomlinson
- Royal Devon University Healthcare NHS Trust, Exeter, Exeter, United Kingdom
| | - Ronen Bar-Yoseph
- Pediatric Pulmonary Institute, Rappaport Children’s Hospital, Rambam Health Care Campus, Haifa, Israel
| | - Alexandra Hebestreit
- University Children’s Hospital Wuerzburg, University Hospital of Wuerzburg, Wuerzburg, Germany
| | - Bradley S. Quon
- Adult Cystic Fibrosis Program and
- Centre for Health Lung Innovation, St. Paul’s Hospital, Vancouver, British Columbia, Canada
| | - Eugenie Kwong
- Adult Cystic Fibrosis Program and
- Centre for Health Lung Innovation, St. Paul’s Hospital, Vancouver, British Columbia, Canada
| | - Zoe L. Saynor
- School of Sport, Health, and Exercise Science, Faculty of Science and Health, University of Portsmouth, Portsmouth, United Kingdom
- Cystic Fibrosis Unit, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - Adam J. Causer
- School of Sport, Health, and Exercise Science, Faculty of Science and Health, University of Portsmouth, Portsmouth, United Kingdom
- Cystic Fibrosis Unit, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | | | - Jane E. Schneiderman
- Division of Respiratory Medicine, The Hospital for Sick Children
- Kinesiology and Physical Education, and
| | - Michelle Shaw
- Division of Translational Medicine, The Hospital for Sick Children, University of Toronto, Toronto, Canada
| | - Tiffany Dwyer
- Discipline of Physiotherapy, Sydney School of Health Sciences, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
- Department of Respiratory Medicine, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Daniel Stevens
- Division of Kinesiology, School of Health and Human Performance, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Natascha Remus
- Centre Intercommunal de Créteil, Service de Pneumologie, INSERM, U955, Université Paris-Est, Créteil, France; and
| | - Benoit Douvry
- Centre Intercommunal de Créteil, Service de Pneumologie, INSERM, U955, Université Paris-Est, Créteil, France; and
| | - Karla Foster
- Pulmonary Medicine, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio
| | | | - Felix Ratjen
- Division of Respiratory Medicine, The Hospital for Sick Children
| | - Helge Hebestreit
- University Children’s Hospital Wuerzburg, University Hospital of Wuerzburg, Wuerzburg, Germany
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3
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Donadio MVF, Barbosa MA, Vendrusculo FM, Ramirez TI, Santana-Sosa E, Sanz-Santiago V, Perez-Ruiz M. Mechanisms of ventilatory limitation to maximum exercise in children and adolescents with chronic airway diseases. Pediatr Pulmonol 2023; 58:3293-3302. [PMID: 37671821 DOI: 10.1002/ppul.26659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 08/08/2023] [Accepted: 08/19/2023] [Indexed: 09/07/2023]
Abstract
INTRODUCTION Exercise intolerance is common in chronic airway diseases (CAD), but its mechanisms are still poorly understood. The aim of this study was to evaluate exercise capacity and its association with lung function, ventilatory limitation, and ventilatory efficiency in children and adolescents with cystic fibrosis (CF) and asthma when compared to healthy controls. METHODS Cross-sectional study including patients with mild-to-moderate asthma, CF and healthy children and adolescents. Anthropometric data, lung function (spirometry) and exercise capacity (cardiopulmonary exercise testing) were evaluated. Primary outcomes were peak oxygen consumption (VO2 peak), forced expiratory volume in 1 s (FEV1 ), breathing reserve (BR), ventilatory equivalent for oxygen consumption (VE /VO2 ) and for carbon dioxide production (VE /VCO2 ), both at the ventilatory threshold (VT1 ) and peak exercise. RESULTS Mean age of 147 patients included was 11.8 ± 3.0 years. There were differences between asthmatics and CF children when compared to their healthy peers for anthropometric and lung function measurements. Asthmatics showed lower VO2 peak when compared to both healthy and CF subjects, although no differences were found between healthy and CF patients. A lower BR was found when CF patients were compared to both healthy and asthmatic. Both CF and asthmatic patients presented higher values for VE /VO2 and VE /VCO2 at VT1 when compared to healthy individuals. For both VE /VO2 and VE /VCO2 at peak exercise CF patients presented higher values when compared to their healthy peers. CONCLUSION Patients with CF achieved good exercise capacity despite low ventilatory efficiency, low BR, and reduced lung function. However, asthmatics reported reduced cardiorespiratory capacity and normal ventilatory efficiency at peak exercise. These results demonstrate differences in the mechanisms of ventilatory limitation to maximum exercise testing in children and adolescents with CAD.
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Affiliation(s)
- Márcio Vinícius Fagundes Donadio
- Department of Physiotherapy, Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya (UIC), Barcelona, Spain
- Laboratory of Pediatric Physical Activity, Infant Center, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Marta Amor Barbosa
- Department of Physiotherapy, Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya (UIC), Barcelona, Spain
| | - Fernanda Maria Vendrusculo
- Laboratory of Pediatric Physical Activity, Infant Center, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Tamara Iturriaga Ramirez
- Department of Physiotherapy, Faculty of Sport Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, Spain
| | - Elena Santana-Sosa
- Department of Physiotherapy, Faculty of Sport Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, Spain
| | - Veronica Sanz-Santiago
- Department of Pulmonology, Hospital Universitario Infantil Niño Jesús de Madrid, Madrid, Spain
| | - Margarita Perez-Ruiz
- Department of Health and Human Performance, Faculty of Physical Activity and Sport Sciences-INEF, Universidad Politécnica de Madrid (UPM), Madrid, Spain
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Laveneziana P, Palange P. Ventilatory efficiency and its clinical and prognostic value in adults with cystic fibrosis. Eur Respir Rev 2021; 30:30/162/200395. [PMID: 34853094 DOI: 10.1183/16000617.0395-2020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 05/08/2021] [Indexed: 11/05/2022] Open
Abstract
Cystic fibrosis, due to the absence or abnormal function of the cystic fibrosis transmembrane conductance regulator, is the most common life-limiting autosomal recessive genetic disorder among the Caucasian population. The lungs are particularly affected due to thick and tenacious mucus causing parenchymal anomalies ranging from bronchiectasis, progressive airflow limitation, respiratory infections, lung destruction and ultimately respiratory failure. Despite the remarkable advances in treatment that have greatly improved survival, most patients experience progressive exercise curtailment, with the consequence that a growing number of patients with cystic fibrosis will be referred for exercise-based evaluations in the forthcoming years. Cardiopulmonary exercise testing, in particular, is a useful tool to assess the mechanisms of exercise intolerance in individual patients that may have treatment and prognostic implications. In this review, we will focus on ventilatory efficiency and its clinical and prognostic value in adults with cystic fibrosis.
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Affiliation(s)
- Pierantonio Laveneziana
- Sorbonne Université, INSERM, UMRS1158 Neurophysiologie Respiratoire Expérimentale et Clinique, Paris, France.,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
| | - Paolo Palange
- Dept of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
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5
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Celebioglu E, Yataganbaba A, Bekmez S, Oncel A, Degirmenci C, Tekin F, Demirkiran G, Yalcin E, Demir AU, Yazici M. Growing-rod Graduates With Idiopathic Early-onset Scoliosis Have Comparable Exercise Tolerance to Patients With Surgically Treated Adolescent Idiopathic Scoliosis. J Pediatr Orthop 2020; 40:e734-e739. [PMID: 32282619 DOI: 10.1097/bpo.0000000000001567] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Growing-rod (GR) treatment is the current standard for progressive idiopathic early-onset scoliosis (I-EOS) in young children. Despite good radiographic outcomes, the impact of scoliosis treatment on pulmonary functions is not well-defined in this patient population. The aim of this study was to evaluate pulmonary functions and exercise tolerance in I-EOS patients graduated from GR treatment and to compare them with age-matched, surgically treated adolescent idiopathic scoliosis (AIS) patients and healthy controls. METHODS Eight GR graduates with I-EOS with pulmonary function tests and complete radiographic results were compared with a group of 9 thoracic AIS patients at least 2 years out from posterior fusion. Both groups were also compared with a set of 10 healthy individuals. All subjects underwent cardiopulmonary exercise testing and spirometry to evaluate pulmonary function. RESULTS Age, sex, height, arm span, weight, residual deformity, and level of instrumentation in GR and AIS patients were similar. In the GR group, forced vital capacity % and forced expiratory volume in 1 second % values were reduced compared with the healthy controls and AIS group (P<0.001, <0.001 and 0.036, 0.046, respectively). Breathing reserve index at lactate threshold (BRILT) was higher in GR and AIS patients (P=0.001 and 0.002, respectively), and was similar between GR and AIS patients (P=0.916). Heart rate at lactate threshold was higher in GR and AIS groups compared with controls (P<0.001 and 0.001, respectively). CONCLUSIONS AIS and GR patients demonstrated reduced pulmonary reserve and exercise tolerance compared with their peers with no spinal deformity. However, exercise tolerance of I-EOS patients treated with the GR method was similar to that of operated AIS patients. These results suggest a positive impact of GR treatment in children with I-EOS. LEVEL OF EVIDENCE Level III-cross-sectional comparative study.
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Affiliation(s)
| | | | - Senol Bekmez
- Department of Orthopaedics and Traumatology, Cankaya Hospital, Ankara, Turkey
| | | | | | | | | | - Ebru Yalcin
- Pediatric Chest Diseases, Hacettepe University School of Medicine
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6
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Ramos KJ. Cardiopulmonary Exercise Testing: Another Tool in the Prognostication Tool Kit for Cystic Fibrosis. Am J Respir Crit Care Med 2019; 199:938-940. [PMID: 30422672 PMCID: PMC6467311 DOI: 10.1164/rccm.201810-2053ed] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Affiliation(s)
- Kathleen J Ramos
- 1 Division of Pulmonary, Critical Care, and Sleep Medicine University of Washington Seattle, Washington
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7
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Di Paolo M, Teopompi E, Savi D, Crisafulli E, Longo C, Tzani P, Longo F, Ielpo A, Pisi G, Cimino G, Simmonds NJ, Neder JA, Chetta A, Palange P. Reduced exercise ventilatory efficiency in adults with cystic fibrosis and normal to moderately impaired lung function. J Appl Physiol (1985) 2019; 127:501-512. [PMID: 31219769 DOI: 10.1152/japplphysiol.00030.2019] [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] [Indexed: 11/22/2022] Open
Abstract
Despite being a hallmark and an independent prognostic factor in several cardiopulmonary diseases, ventilatory efficiency-i.e., minute ventilation/carbon dioxide output relationship (V̇e/V̇co2)-has never been systematically explored in cystic fibrosis (CF). To provide a comprehensive frame of reference regarding measures of ventilatory efficiency in CF adults with normal to moderately impaired lung function and to confirm the hypothesis that V̇e/V̇co2 is a sensitive marker of early lung disease. CF patients were divided into three groups, according to their spirometry: normal (G1), mild impairment (G2), and moderate impairment (G3) in lung function. All participants underwent incremental cardiopulmonary exercise testing on a cycle ergometer. Lowest V̇e/V̇co2 ratio (nadir) and the slope and the intercept of the linear region of the V̇e/V̇co2 relationship were contrasted in a two-center retrospective analysis, involving 72 CF patients and 36 healthy controls (HC). Compared with HC, CF patients had significantly higher V̇e/V̇co2 nadir, slope, and intercept (P < 0.001, P < 0.001, and P = 0.049, respectively). Subgroup analysis revealed significant differences in nadir (P = 0.001) and slope (P = 0.012) values even between HC and G1. Dynamic hyperinflation related negatively with slope (P = 0.045) and positively with intercept (P = 0.001), while no impact on nadir was observed. Ventilatory inefficiency is a clear feature of adults with CF, even among patients with normal spirometry. V̇e/V̇co2 nadir seems to be the most reliable metric to describe ventilatory efficiency in CF adults. Further prospective studies are needed to clarify whether V̇e/V̇co2 could represent a useful marker in the evaluation of early lung disease in CF.NEW & NOTEWORTHY This is the first study to investigate ventilatory efficiency in a cohort of adult cystic fibrosis (CF) patients with nonsevere lung disease. The finding of impaired ventilatory efficiency in patients with normal lung function confirms the higher sensitivity of exercise testing in detecting early lung disease compared with spirometry. Dynamic hyperinflation plays a significant role in determining the behavior of V̇e/V̇co2 slope and intercept values with increasing lung function impairment. Apparently free from interference from mechanical constraints, V̇e/V̇co2 nadir seems the most reliable parameter to evaluate ventilatory efficiency in CF adults.
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Affiliation(s)
- Marcello Di Paolo
- Department of Public Health and Infectious Diseases, Adult Cystic Fibrosis Center, "Sapienza" University of Rome, Rome, Italy.,Adult Cystic Fibrosis Center, Royal Brompton and Harefield National Health Service Foundation Trust, London, United Kingdom
| | - Elisabetta Teopompi
- Department of Medicine and Surgery, Respiratory Disease and Lung Function Unit, University Hospital of Parma, Parma, Italy
| | - Daniela Savi
- Department of Public Health and Infectious Diseases, Adult Cystic Fibrosis Center, "Sapienza" University of Rome, Rome, Italy.,Cystic Fibrosis Unit, "Bambino Gesù" Children's Hospital, Rome, Italy
| | - Ernesto Crisafulli
- Department of Medicine and Surgery, Respiratory Disease and Lung Function Unit, University Hospital of Parma, Parma, Italy
| | - Chiara Longo
- Department of Medicine and Surgery, Respiratory Disease and Lung Function Unit, University Hospital of Parma, Parma, Italy
| | - Panagiota Tzani
- Department of Medicine and Surgery, Respiratory Disease and Lung Function Unit, University Hospital of Parma, Parma, Italy
| | - Francesco Longo
- Department of Medicine and Surgery, Respiratory Disease and Lung Function Unit, University Hospital of Parma, Parma, Italy
| | - Antonella Ielpo
- Department of Medicine and Surgery, Respiratory Disease and Lung Function Unit, University Hospital of Parma, Parma, Italy
| | - Giovanna Pisi
- Cystic Fibrosis Unit, University Hospital of Parma, Parma, Italy
| | - Giuseppe Cimino
- Department of Pediatrics and Infantile Neuropsychiatry, Adult Cystic Fibrosis Center, "Sapienza" University of Rome, Rome, Italy
| | - Nicholas J Simmonds
- Adult Cystic Fibrosis Center, Royal Brompton and Harefield National Health Service Foundation Trust, London, United Kingdom.,National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - J Alberto Neder
- Respiratory Investigation Unit & Laboratory of Clinical Exercise Physiology, Queen's University and Kingston General Hospital, Kingston, Ontario, Canada
| | - Alfredo Chetta
- Department of Medicine and Surgery, Respiratory Disease and Lung Function Unit, University Hospital of Parma, Parma, Italy
| | - Paolo Palange
- Department of Public Health and Infectious Diseases, Adult Cystic Fibrosis Center, "Sapienza" University of Rome, Rome, Italy
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8
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Ramos KJ, Smith PJ, McKone EF, Pilewski JM, Lucy A, Hempstead SE, Tallarico E, Faro A, Rosenbluth DB, Gray AL, Dunitz JM. Lung transplant referral for individuals with cystic fibrosis: Cystic Fibrosis Foundation consensus guidelines. J Cyst Fibros 2019; 18:321-333. [PMID: 30926322 PMCID: PMC6545264 DOI: 10.1016/j.jcf.2019.03.002] [Citation(s) in RCA: 122] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 03/08/2019] [Accepted: 03/09/2019] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Provide recommendations to the cystic fibrosis (CF) community to facilitate timely referral for lung transplantation for individuals with CF. METHODS The CF Foundation organized a multidisciplinary committee to develop CF Lung Transplant Referral Consensus Guidelines. Three workgroups were formed: timing for transplant referral; modifiable barriers to transplant; and transition to transplant care. A focus group of lung transplant recipients with CF and spouses of CF recipients informed guideline development. RESULTS The committee formulated 21 recommendation statements based on literature review, committee member practices, focus group insights, and in response to public comment. Critical approaches to optimizing access to lung transplant include early discussion of this treatment option, assessment for modifiable barriers to transplant, and open communication between the CF and lung transplant centers. CONCLUSIONS These guidelines will help CF providers counsel their patients and may reduce the number of individuals with CF who die without consideration for lung transplant.
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Affiliation(s)
- Kathleen J Ramos
- Division of Pulmonary, Critical Care, and Sleep Medicine, Dept of Medicine, University of Washington, Seattle, WA, USA.
| | - Patrick J Smith
- Department of Psychiatry and Behavioral Sciences, Behavioral Medicine Division, Department of Medicine, Pulmonary Division, Duke University Medical Center, Durham, NC, USA.
| | - Edward F McKone
- National Referral Centre for Adult Cystic Fibrosis, St. Vincent's University Hospital, Dublin, Ireland.
| | - Joseph M Pilewski
- Division of Pulmonary, Allergy & Critical Care Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA, USA.
| | - Amy Lucy
- Cystic Fibrosis Foundation, Bethesda, MD, USA
| | | | | | - Albert Faro
- Cystic Fibrosis Foundation, Bethesda, MD, USA.
| | - Daniel B Rosenbluth
- Division of Pulmonary and Critical Care Medicine, Dept of Medicine, Washington University School of Medicine, St. Louis, MO, USA.
| | - Alice L Gray
- Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado - Anschutz Medical Campus, Aurora, CO, USA.
| | - Jordan M Dunitz
- Division of Pulmonary, Allergy, Critical Care Medicine and Sleep, Dept of Medicine, University of Minnesota, Minneapolis, MN, USA.
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9
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Hebestreit H, Hulzebos EHJ, Schneiderman JE, Karila C, Boas SR, Kriemler S, Dwyer T, Sahlberg M, Urquhart DS, Lands LC, Ratjen F, Takken T, Varanistkaya L, Rücker V, Hebestreit A, Usemann J, Radtke T, Junge S, Smaczny C, Rand S, Dawson C. Cardiopulmonary Exercise Testing Provides Additional Prognostic Information in Cystic Fibrosis. Am J Respir Crit Care Med 2019; 199:987-995. [DOI: 10.1164/rccm.201806-1110oc] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
| | - Erik H. J. Hulzebos
- Child Development & Exercise Center, Wilhelmina Children’s Hospital, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Jane E. Schneiderman
- Division of Respiratory Medicine, Department of Pediatrics, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Chantal Karila
- Service de Pneumologie et Allergologie Pédiatriques, Centre de Ressources et Compétences dans la Mucoviscidose, Hôpital Necker Enfants Malades, Université Paris V – Descartes, Paris, France
| | - Steven R. Boas
- Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Susi Kriemler
- Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
| | - Tiffany Dwyer
- Discipline of Physiotherapy, Faculty of Health Sciences and
- Central Clinical School, Sydney Medical School, University of Sydney, Sydney, Australia
- Department of Respiratory and Sleep Medicine, Royal Prince Alfred Hospital, Sydney, Australia
| | - Margareta Sahlberg
- Department of Pediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Goteborg, Sweden
| | - Don S. Urquhart
- Department of Paediatric Respiratory and Sleep Medicine, Royal Hospital for Sick Children, Edinburgh, United Kingdom
| | - Larry C. Lands
- Montreal Children’s Hospital, McGill University Health Centre, Montreal, Quebec, Canada
| | - Felix Ratjen
- Division of Respiratory Medicine, Department of Pediatrics, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Tim Takken
- Child Development & Exercise Center, Wilhelmina Children’s Hospital, University Medical Center Utrecht, Utrecht, the Netherlands
| | | | - Viktoria Rücker
- Institute for Clinical Epidemiology and Biometry, Wuerzburg, Germany; and
| | | | - Jakob Usemann
- University Children’s Hospital Basel, Basel, Switzerland
| | - Thomas Radtke
- Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
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Causer AJ, Shute JK, Cummings MH, Shepherd AI, Bright V, Connett G, Allenby MI, Carroll MP, Daniels T, Saynor ZL. Cardiopulmonary exercise testing with supramaximal verification produces a safe and valid assessment of V̇o 2max in people with cystic fibrosis: a retrospective analysis. J Appl Physiol (1985) 2018; 125:1277-1283. [PMID: 30346240 DOI: 10.1152/japplphysiol.00454.2018] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The validity and safety of using supramaximal verification (Smax) to confirm a maximal effort during cardiopulmonary exercise testing (CPET) in people with cystic fibrosis (CF) and/or those with severe disease has been questioned. Therefore, this study aimed to investigate these concerns in children, adolescents, and adults with mild-to-severe CF lung disease. Retrospective analysis of 17 pediatric and 28 adult participants with CF [age range: 9.2-62.9 y; forced expiratory volume in 1 s: 66.7% (range: 29.9%-102.3%); 30 men] who completed a routine ramp-incremental cycling test to determine peak oxygen uptake (V̇o2peak) was studied. Maximal oxygen uptake (V̇o2max) was subsequently confirmed by Smax at 110% of peak power output. All participants satisfied the criteria to verify a maximal effort during CPET. However, Smax-V̇o2peak exceeded ramp-V̇o2peak in 3/14 (21.4%) of pediatric and 6/28 (21.4%) adult exercise tests. A valid measurement of V̇o2max was attained in 85.7% of pediatric and 96.4% of adult exercise tests, as Smax-V̇o2peak did not exceed ramp-V̇o2peak by >9%. Adults ( n = 9) experienced a ≥5% reduction in arterial O2 saturation during CPET, 4 during both the ramp and Smax, 3 during only the ramp, and 2 during only Smax. Smax did not significantly worsen perceived breathing effort, chest tightness, throat narrowing, or exertion compared with ramp-incremental testing. Given the clinical importance of aerobic fitness in people with CF, incorporating Smax is recommended to provide a safe and valid measure of V̇o2max in children, adolescents, and adults who span the spectrum of CF disease severity. NEW & NOTEWORTHY Incorporating supramaximal verification into cardiopulmonary exercise testing protocols did not increase the frequency of adverse events or perceived discomfort versus a single-phase incremental exercise test in people with mild-to-severe cystic fibrosis. Furthermore, a valid measure of maximal oxygen uptake (V̇o2max) was obtained from 85.7% of pediatric and 96.4% of adult exercise tests, whereas peak oxygen uptake underestimated aerobic fitness in comparison with V̇o2max in 21.4% of cases (by up to 24.4%).
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Affiliation(s)
- Adam J Causer
- Department of Sport and Exercise Science, Faculty of Science, University of Portsmouth , Portsmouth , United Kingdom.,Cystic Fibrosis Unit, University Hospital Southampton National Health Service Foundation Trust , Southampton , United Kingdom
| | - Janis K Shute
- School of Pharmacy and Biomedical Sciences, Faculty of Science, University of Portsmouth , Portsmouth , United Kingdom
| | - Michael H Cummings
- Department of Diabetes and Endocrinology, Queen Alexandra Hospital , Portsmouth , United Kingdom
| | - Anthony I Shepherd
- Department of Sport and Exercise Science, Faculty of Science, University of Portsmouth , Portsmouth , United Kingdom
| | - Victoria Bright
- Cystic Fibrosis Unit, University Hospital Southampton National Health Service Foundation Trust , Southampton , United Kingdom
| | - Gary Connett
- National Institute for Health Research, Southampton Biomedical Research Centre, Southampton Children's Hospital , United Kingdom
| | - Mark I Allenby
- Cystic Fibrosis Unit, University Hospital Southampton National Health Service Foundation Trust , Southampton , United Kingdom
| | - Mary P Carroll
- Cystic Fibrosis Unit, University Hospital Southampton National Health Service Foundation Trust , Southampton , United Kingdom
| | - Thomas Daniels
- Cystic Fibrosis Unit, University Hospital Southampton National Health Service Foundation Trust , Southampton , United Kingdom
| | - Zoe L Saynor
- Department of Sport and Exercise Science, Faculty of Science, University of Portsmouth , Portsmouth , United Kingdom.,Cystic Fibrosis Unit, University Hospital Southampton National Health Service Foundation Trust , Southampton , United Kingdom
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Pediatric Exercise Testing: Value and Implications of Peak Oxygen Uptake. CHILDREN-BASEL 2017; 4:children4010006. [PMID: 28125022 PMCID: PMC5296667 DOI: 10.3390/children4010006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 12/15/2016] [Accepted: 01/17/2017] [Indexed: 01/26/2023]
Abstract
Peak oxygen uptake (peakV˙O2) measured by clinical exercise testing is the benchmark for aerobic fitness. Aerobic fitness, estimated from maximal treadmill exercise, is a predictor of mortality in adults. PeakV˙O2 was shown to predict longevity in patients aged 7–35 years with cystic fibrosis over 25 years ago. A surge of exercise studies in young adults with congenital heart disease over the past decade has revealed significant prognostic information. Three years ago, the first clinical trial in children with pulmonary arterial hypertension used peakV˙O2 as an endpoint that likewise delivered clinically relevant data. Cardiopulmonary exercise testing provides clinicians with biomarkers and clinical outcomes, and researchers with novel insights into fundamental biological mechanisms reflecting an integrated physiological response hidden at rest. Momentum from these pioneering observations in multiple disease states should impel clinicians to employ similar methods in other patient populations; e.g., sickle cell disease. Advances in pediatric exercise science will elucidate new pathways that may identify novel biomarkers. Our initial aim of this essay is to highlight the clinical relevance of exercise testing to determine peakV˙O2, and thereby convince clinicians of its merit, stimulating future clinical investigators to broaden the application of exercise testing in pediatrics.
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Hayes D, Tumin D, Daniels CJ, McCoy KS, Mansour HM, Tobias JD, Kirkby SE. Pulmonary Artery Pressure and Benefit of Lung Transplantation in Adult Cystic Fibrosis Patients. Ann Thorac Surg 2016; 101:1104-9. [DOI: 10.1016/j.athoracsur.2015.09.086] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 09/02/2015] [Accepted: 09/28/2015] [Indexed: 10/22/2022]
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13
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Hebestreit H, Arets HG, Aurora P, Boas S, Cerny F, Hulzebos EH, Karila C, Lands LC, Lowman JD, Swisher A, Urquhart DS. Statement on Exercise Testing in Cystic Fibrosis. Respiration 2015; 90:332-51. [DOI: 10.1159/000439057] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 07/27/2015] [Indexed: 11/19/2022] Open
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Hayes D, Kirkby S, Whitson BA, Black SM, Sheikh SI, Tobias JD, Mansour HM, Kopp BT. Mortality Risk and Pulmonary Function in Adults With Cystic Fibrosis at Time of Wait Listing for Lung Transplantation. Ann Thorac Surg 2015; 100:474-9. [PMID: 26138770 DOI: 10.1016/j.athoracsur.2015.04.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2015] [Revised: 04/05/2015] [Accepted: 04/07/2015] [Indexed: 10/23/2022]
Abstract
BACKGROUND Lung transplantation (LTx) benefit for survival in cystic fibrosis (CF) patients placed on the wait list is not well studied. METHODS To predict the relationship between initial forced expiratory volume in 1 second (FEV1) and forced vital capacity (FVC) and the hazard ratio (HR) associated with LTx in CF patients, the United Network for Organ Sharing database was queried from 2005 to 2006 for adult patients with CF. Survival was assessed from wait list entry time until death on wait list, death after LTx, or censoring. Multivariate Cox proportional hazards models were used to assess the effect of LTx. The first model estimated the HR of LTx with adjustment for FEV1 or FVC and other covariates, and the second model estimated the HR of LTx conditional on FEV1 or FVC at listing. RESULTS Two hundred seventy-eight patients with CF were included in the cohort, and 277 were used for survival analysis. Lung transplantation reduced the risk for death controlling for FEV1 (HR, 0.601; 95% confidence interval, 0.375 to 0.964; p = 0.035) or controlling for FVC (HR, 0.547; 95% confidence interval, 0.336 to 0.889; p = 0.015). Interaction models found that the HR of LTx varied significantly across initial FEV1 and FVC, with the predicted LTx HR and 95% confidence interval being protective (HR < 1) at FEV1 of 25% or less and FVC of 40% or less, respectively. CONCLUSIONS The benefit of LTx in adults with CF was significant at a lower baseline FEV1 than expected. A threshold for baseline FVC was established below which LTx was protective.
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Affiliation(s)
- Don Hayes
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, Ohio; Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, Ohio; Section of Pulmonary Medicine, Nationwide Children's Hospital, Columbus, Ohio.
| | - Stephen Kirkby
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, Ohio; Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, Ohio; Section of Pulmonary Medicine, Nationwide Children's Hospital, Columbus, Ohio
| | - Bryan A Whitson
- Department of Surgery, The Ohio State University College of Medicine, Columbus, Ohio
| | - Sylvester M Black
- Department of Surgery, The Ohio State University College of Medicine, Columbus, Ohio
| | - Shahid I Sheikh
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, Ohio; Section of Pulmonary Medicine, Nationwide Children's Hospital, Columbus, Ohio
| | - Joseph D Tobias
- Department of Anesthesiology, The Ohio State University College of Medicine, Columbus, Ohio; Department of Anesthesiology and Pain Medicine, Nationwide Children's Hospital, Columbus, Ohio
| | - Heidi M Mansour
- Skaggs Pharmaceutical Sciences Center, The University of Arizona-Tucson College of Pharmacy, Tucson, Arizona
| | - Benjamin T Kopp
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, Ohio; Section of Pulmonary Medicine, Nationwide Children's Hospital, Columbus, Ohio
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Hulzebos EHJ, Bomhof-Roordink H, van de Weert-van Leeuwen PB, Twisk JWR, Arets HGM, van der Ent CK, Takken T. Prediction of Mortality in Adolescents with Cystic Fibrosis. Med Sci Sports Exerc 2014; 46:2047-52. [DOI: 10.1249/mss.0000000000000344] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Horsley A, Siddiqui S. Putting lung function and physiology into perspective: cystic fibrosis in adults. Respirology 2014; 20:33-45. [PMID: 25219816 DOI: 10.1111/resp.12382] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Revised: 07/22/2014] [Accepted: 07/23/2014] [Indexed: 11/30/2022]
Abstract
Adult cystic fibrosis (CF) is notable for the wide heterogeneity in severity of disease expression, both between patients and within the lungs of individuals. Although CF airways disease appears to start in the small airways, in adults there is typically widespread bronchiectasis, increased airway secretions, and extensive obstruction and inflammation of the small airways. The complexity and heterogeneity of airways disease in CF means that although there are many different methods of assessing and describing lung 'function', none of these single-dimensional tests is able to provide a comprehensive assessment of lung physiology across the spectrum seen in adult CF. The most widely described measure, the forced expiratory volume in 1 s, remains a useful and simple clinical tool, but is insensitive to early changes and may be dissociated from other more detailed assessments of disease severity such as computed tomography. In this review, we also discuss the use of more sensitive novel assessments such as multiple breath washout tests and impulse oscillometry, as well as the role of cardiopulmonary exercise testing. In the future, hyperpolarized gas magnetic resonance imaging techniques that combine regional structural and functional information may help us to better understand these measures, their applications and limitations.
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Affiliation(s)
- Alex Horsley
- Respiratory Research Group, Institute of Inflammation and Repair, University of Manchester, Manchester, UK; Manchester Adult Cystic Fibrosis Centre, North West Lung Centre, University Hospital of South Manchester, Manchester, UK
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Pastré J, Prévotat A, Tardif C, Langlois C, Duhamel A, Wallaert B. Determinants of exercise capacity in cystic fibrosis patients with mild-to-moderate lung disease. BMC Pulm Med 2014; 14:74. [PMID: 24884656 PMCID: PMC4011768 DOI: 10.1186/1471-2466-14-74] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Accepted: 04/23/2014] [Indexed: 11/30/2022] Open
Abstract
Background Adult patients with cystic fibrosis (CF) frequently have reduced exercise tolerance, which is multifactorial but mainly due to bronchial obstruction. The aim of this retrospective analysis was to determine the mechanisms responsible for exercise intolerance in patients with mild-to-moderate or severe disease. Methods Cardiopulmonary exercise testing with blood gas analysis at peak exercise was performed in 102 patients aged 28 ± 11 years: 48 patients had severe lung disease (FEV1 < 50%, group 1) and 54 had mild-to-moderate lung disease (FEV1 ≥ 50%, group 2). VO2 peak was measured and correlated with clinical, biological, and functional parameters. Results VO2 peak for all patients was 25 ± 9 mL/kg/min (65 ± 21% of the predicted value) and was < 84% of predicted in 82% of patients (100% of group 1, 65% of group 2). VO2 peak was correlated with body mass index, C-reactive protein, FEV1, FVC, RV, DLCO, VE/VCO2 peak, VD/VT, PaO2, PaCO2, P(A-a)O2, and breathing reserve. In multivariate analysis, FEV1 and overall hyperventilation during exercise were independent determinants of exercise capacity (R2 = 0.67). FEV1 was the major significant predictor of VO2 peak impairment in group 1, accounting for 31% of VO2 peak alteration, whereas excessive overall hyperventilation (reduced or absent breathing reserve and VE/VCO2) accounted for 41% of VO2 alteration in group 2. Conclusion Exercise limitation in adult patients with CF is largely dependent on FEV1 in patients with severe lung disease and on the magnitude of the ventilatory response to exercise in patients with mild-to-moderate lung disease.
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Affiliation(s)
| | | | | | | | | | - Benoit Wallaert
- Université Lille 2 et Clinique des Maladies Respiratoires, CRCM Hôpital Calmette, CHRU Lille, France.
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18
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Practical guidelines: lung transplantation in patients with cystic fibrosis. Pulm Med 2014; 2014:621342. [PMID: 24800072 PMCID: PMC3988894 DOI: 10.1155/2014/621342] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Revised: 01/08/2014] [Accepted: 01/09/2014] [Indexed: 12/12/2022] Open
Abstract
There are no European recommendations on issues specifically related to lung transplantation (LTX) in cystic fibrosis (CF). The main goal of this paper is to provide CF care team members with clinically relevant CF-specific information on all aspects of LTX, highlighting areas of consensus and controversy throughout Europe. Bilateral lung transplantation has been shown to be an important therapeutic option for end-stage CF pulmonary disease. Transplant function and patient survival after transplantation are better than in most other indications for this procedure. Attention though has to be paid to pretransplant morbidity, time for referral, evaluation, indication, and contraindication in children and in adults. This review makes extensive use of specific evidence in the field of lung transplantation in CF patients and addresses all issues of practical importance. The requirements of pre-, peri-, and postoperative management are discussed in detail including bridging to transplant and postoperative complications, immune suppression, chronic allograft dysfunction, infection, and malignancies being the most important. Among the contributors to this guiding information are 19 members of the ECORN-CF project and other experts. The document is endorsed by the European Cystic Fibrosis Society and sponsored by the Christiane Herzog Foundation.
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Radtke T, Faro A, Wong J, Boehler A, Benden C. Exercise testing in pediatric lung transplant candidates with cystic fibrosis. Pediatr Transplant 2011; 15:294-9. [PMID: 21244591 DOI: 10.1111/j.1399-3046.2010.01471.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Exercise testing is considered an important prognostic tool for the selection of pediatric lung transplant candidates with end-stage CF lung disease. To better understand the current practice as it pertains to exercise testing, a self-administered questionnaire was distributed to 25 pediatric lung transplant centers within the IPLTC across Australia, Europe, and North America. All centers perform standardized exercise tests. Fifteen centers perform one single-field test (6MWT/12MWT), while seven perform a six-min walk plus an additional test: SWT (N = 1), 3MST (N = 1), and CPET (N = 5). Frequency of testing is markedly different among centers. Two centers conduct exercise testing once, all others at multiple time points. Equipment availability and cost were no limitations, but lack of time (20%) and personnel (16%), and paucity of prognostic evidence (16%) and reference values (12%) were stated. Exercise testing is considered important and extensively used in the evaluation of pediatric lung transplant candidates with CF; methods of exercise test and the frequency of testing vary widely. We propose a prospective multicenter study to evaluate the efficacy of exercise testing and its prognostic value using a standardized protocol.
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Affiliation(s)
- Thomas Radtke
- Exercise Physiology, Institute for Human Movement Sciences, ETH Zurich Institute of Physiology, University of Zurich, Zurich, Switzerland
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20
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Karila C, Ravilly S, Gauthier R, Tardif C, Neveu H, Maire J, Ramel S, Cracowski C, Legallais P, Foure H, Halm AM, Saugier J, Bordas G, Loire N, Kirszenbaum M, Dassonville J, Mely L, Wuyam B, Giovannetti P, Ouksel H, Ellaffi M, Denjean A. Activité physique et réentraînement à l’effort du patient atteint de mucoviscidose. Rev Mal Respir 2010; 27:301-13. [DOI: 10.1016/j.rmr.2010.02.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2009] [Accepted: 02/03/2010] [Indexed: 11/26/2022]
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Nguyen S, Leroy S, Cracowski C, Perez T, Valette M, Neviere R, Aguilaniu B, Wallaert B. [Prognostic value of clinical exercise testing in adult patients with cystic fibrosis]. Rev Mal Respir 2010; 27:219-25. [PMID: 20359613 DOI: 10.1016/j.rmr.2010.01.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2009] [Accepted: 09/25/2009] [Indexed: 11/27/2022]
Abstract
BACKGROUND Current guidelines for referring cystic fibrosis (CF) patients for lung transplantation, based on resting parameters, are insufficient to predict 3-year mortality. The aim of this study was to determine the prognostic value of cardiopulmonary exercise testing (CPET) in adult CF patients. METHODS A multicenter retrospective study on 3-year outcomes was made on 51 adult CF patients who underwent CPET with blood gas analysis. Demographic data, resting pulmonary function and CPET parameters were collected to perform a univariate survival analysis by Kaplan-Meier curves and log-rank tests. To estimate prognosis, a multivariate logistic regression analysis was performed. RESULTS The survival log-rank analysis indicated that lower FEV(1), lower body mass index (BMI), diabetes mellitus, lower work rate and higher alveolar-arterial gradient for oxygen (P[A-a]O(2)) at peak exercise were associated with a significantly higher risk of death. The logistic regression analysis showed that BMI (<19.8) and P(A-a)O(2) peak (>43 mmHg) were independently associated with a lower chance of survival. CONCLUSION CPET with blood gas analysis may have a prognostic value in adult CF patients. Further larger prospective clinical studies are warranted to confirm these preliminary results.
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Affiliation(s)
- S Nguyen
- Service de pneumologie et immunoallergologie, centre de ressources et de compétence pour la mucoviscidose adulte, clinique des maladies respiratoires, hôpital Albert-Calmette, CHRU de Lille, 59037 Lille cedex, France
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22
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Abstract
Exercise is an important aspect of health and development in children. By placing the pulmonary system under stress, exercise testing may reveal subtle dynamic abnormalities that are not apparent on conventional static pulmonary function tests. Furthermore, exercise testing assesses the functional impact of respiratory disease on children. Exercise testing has been used in children with a variety of respiratory diseases such as exercise induced bronchoconstriction, asthma, cystic fibrosis and bronchopulmonary dysplasia to assess the severity of disease as well as response to various interventions. Furthermore, there is good evidence that exercise testing is a useful tool to help determine prognosis in patients with cystic fibrosis. In addition to the clinical utility, exercise testing is also becoming an increasingly important outcome measure in research studies.
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Affiliation(s)
- Oon Hoe Teoh
- Department of Respiratory Medicine, Children's Hospital at Westmead, Sydney.
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23
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Wideman L, Baker CF, Brown PK, Consitt LA, Ambrosius WT, Schechter MS. Substrate utilization during and after exercise in mild cystic fibrosis. Med Sci Sports Exerc 2009; 41:270-8. [PMID: 19127200 DOI: 10.1249/mss.0b013e318188449b] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PURPOSE To determine substrate utilization and energy expenditure during maximal and submaximal exercise and recovery in adolescents with cystic fibrosis (CF) and healthy age-matched controls (C). METHODS Ten clinically stable CF patients (four girls, six boys; age = 10-22 yr) were matched by body mass index, age, gender, and Tanner stage to healthy controls. Subjects completed VO(2peak) testing and submaximal exercise (20 min) on a cycle ergometer at a relative intensity of 50% VO2(peak) and at an absolute power output (PO). Metabolic parameters were assessed during exercise and recovery (20 min). RESULTS Similar respiratory quotient (RQ) values occurred in both groups during maximal exercise and recovery, despite differences in the maximal PO [CF = 114 (60-180) W and C = 171 (105-280) W, P = 0.006], the total work completed [CF = 27 (9.0-54.3) kJ and C = 55 (25.3-126.5) kJ, P = 0.008], or the VO(2peak) value attained [CF = 30.6 (8.5-45.2) mL kg(-1) min(-1) and C = 40.6 (29-64.5) mL kg(-1) min(-1), P = 0.027]. Submaximal exercise at the same absolute PO resulted in similar RQ values during exercise and recovery despite higher heart rates and average VO2 [CF = 18.8 (9.3-28.7) mL kg(-1) min(-1) and C = 15.2 (6.5-20.1) mL kg(-1)min(-1), P = 0.031] values in CF adolescents, and submaximal exercise at the same relative intensity also resulted in similar RQ values despite significantly greater average PO in the C group [CF = 38.7 (12.3-80) W and C = 67.8 (25.5-140) W, P = 0.039]. Excess postexercise oxygen consumption (EPOC) was greater in CF [2.79 (1.14-5.24) L O2] than C [1.46 (0.56-2.80) L O2] after submaximal exercise at a fixed PO (P = 0.036) but not after the relative exercise bout. CONCLUSIONS Habitual physical activity participation does not warrant adjustment of macronutrient intake ratios in adolescents with mild to moderate CF, but total caloric intake may need to be increased based on the level of EPOC and upon the intensity and the duration of the habitual activity.
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Affiliation(s)
- Laurie Wideman
- Department of Exercise and Sport Science, University of North Carolina at Greensboro, Greensboro, NC 27412, USA.
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24
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Abstract
PURPOSE To review the most common field and laboratory exercise tests available for children and adolescents with cystic fibrosis (CF). METHODS Relevant studies for this review were identified by electronic search of Medline and PubMed databases between the years 1958 and 2008. The bibliographies of all accessed publications were also searched. Key descriptors were cystic fibrosis, exercise testing, aerobic fitness, children, and adolescents. RESULTS Five field tests were selected for presentation, including discussion of their strengths and weaknesses. Laboratory tests measuring aerobic and anaerobic responses to exercise in children with CF were also selected for presentation and discussed along with a summary of safety considerations for exercise testing of children with CF. CONCLUSION Exercise testing is regarded an important prognostic tool in CF care. However, despite its beneficial effects, clinical exercise testing seems underused. Clinicians and their staff should encourage patients with CF to be physically active and recommend exercise testing annually.
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25
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Karila C, Gauthier R, Denjean A. [Exercise testing in patients with cystic fibrosis]. REVUE DE PNEUMOLOGIE CLINIQUE 2008; 64:195-201. [PMID: 19019288 DOI: 10.1016/j.pneumo.2008.07.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Affiliation(s)
- C Karila
- Service de pneumologie et allergologie pédiatriques, hôpital Necker-Enfants-malades, AP-HP, 149, rue de Sèvres, 75015 Paris, France.
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26
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Karila C. Du test de marche à l’épreuve d’effort cardio-pulmonaire. Arch Pediatr 2007; 14 Suppl 4:S208-12. [DOI: 10.1016/s0929-693x(07)78708-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Spahr JE, Love RB, Francois M, Radford K, Meyer KC. Lung transplantation for cystic fibrosis: Current concepts and one center's experience. J Cyst Fibros 2007; 6:334-50. [PMID: 17418647 DOI: 10.1016/j.jcf.2006.12.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2006] [Revised: 12/14/2006] [Accepted: 12/20/2006] [Indexed: 10/23/2022]
Abstract
BACKGROUND Although new approaches to the treatment of patients with cystic fibrosis (CF) are significantly prolonging their lives, most patients will eventually develop respiratory failure due to progressive bronchiectasis caused by chronic lung infection and inflammation and die from to respiratory failure. We examined our center's (University of Wisconsin Hospital and Clinics) experience with lung transplantation for patients with CF and reviewed the literature to examine current and evolving approaches to transplantation for this indication. METHODS We reviewed all published literature pertaining to lung transplantation for CF through 2006, and we reviewed all aspects of transplantation for patients with CF at our institution from 1994 to 2005. RESULTS Major complications following lung transplantation include acute rejection, bacterial infection, and bronchiolitis obliterans. Five-year survival at UWHC (Kaplan-Meier) is 67%, and survival was not adversely affected by transplanting patients receiving mechanical ventilation. The major cause of death for transplant recipients was bronchiolitis obliterans syndrome (BOS). CONCLUSIONS Lung transplantation for CF is associated with acceptable survival rates and can improve quality of life. Lung transplant should be offered to all patients with advanced CF lung disease if they meet currently accepted inclusion and exclusion criteria.
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Affiliation(s)
- J E Spahr
- University of Wisconsin School of Medicine and Public Health, WI, USA.
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28
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Counil FP, Karila C, Le Bourgeois M, Matecki S, Lebras MN, Couderc L, Fajac I, Reynaud-Gaubert M, Bellet M, Gauthier R, Denjean A. Mucoviscidose : du bon usage des explorations fonctionnelles respiratoires. Rev Mal Respir 2007; 24:691-701. [PMID: 17632430 DOI: 10.1016/s0761-8425(07)91145-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
INTRODUCTION Neonatal screening for cystic fibrosis (CF) leads to early dedicated specialist care for all patients. BACKGROUND Pulmonary function tests (PFT) are mandatory for routine monitoring of CF patients. The aim of this article is to review the current guidelines for PFTs in CF, particularly the type of test, the age and the clinical status of the patient. VIEWPOINT The regular use of spirometry is generally accepted. Many other tests are used but their clinical value in the routine follow-up of CF patients remains to be established. CONCLUSION Further efforts should be made to evaluate the value of PFTs in CF, particularly in very young children.
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Affiliation(s)
- F P Counil
- CHU Arnaud de Villeneuve, Montpellier, France.
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Abstract
PURPOSE OF REVIEW To examine recent publications on lung transplantation for cystic fibrosis for changes in surgical techniques, selection criteria of patients, and impact on quality of life. RECENT FINDINGS Recent evidence focuses on cystic fibrosis patient subsets enabling better decisions about listing for lung transplantation as a therapeutic option. There is information about Burkholderia cepacia infection, ventilator dependence, young age, and arthropathy. In the US, the United Network for Organ Sharing has addressed perceived inequities in organ distribution by allocating organs by illness severity rather than time on the waiting list. A Lung Allocation Score ranks severity for patients 12 years of age and older for transplantation based on variables including lung function, oxygen and ventilatory needs, diabetes, weight and physical performance. Some recently studied important variables that influence survival in cystic fibrosis and after lung transplantation, including airway infections, pancreatic exocrine function and acute exacerbations, are not included in the Lung Allocation Score. Few publications have examined quality of life after transplantation, and a definitive work has yet to appear. SUMMARY New information has refined decision-making about lung transplantation for patients with cystic fibrosis. We examine recent findings and make recommendations for patients, families and medical providers.
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Affiliation(s)
- Theodore G Liou
- Department of Internal Medicine, University of Utah, Salt Lake City, Utah 84132, USA.
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Abstract
Lung transplantation in children has been performed since the early 1990s. The indications are cystic fibrosis, pulmonary vascular disease, and a variety of other pulmonary problems leading to death in small children. These other diseases include abnormalities in the metabolism of surfactant producing severe respiratory insufficiency in newborn infants. Many problems accompany these patients before transplantation and many problems are produced both by the transplant itself and immunosuppressant drugs which these children are obliged to take following transplantation. Nonetheless, lung transplantation offers the only real hope of survival in many instances. The long-term results have been somewhat discouraging with a 5-year survival of approximately 50%. The major causes of mortality late following lung transplantation are bronchiolitis obliterans, infections, and malignancy. The development of newer immunosuppressant drugs may offer hope for better results in the future.
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Affiliation(s)
- Charles B Huddleston
- Washington University School of Medicine, St. Louis Children's Hospital, St. Louis, Missouri 63110, USA.
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Quattrucci S, Rolla M, Cimino G, Bertasi S, Cingolani S, Scalercio F, Venuta F, Midulla F. Lung transplantation for cystic fibrosis: 6-year follow-up. J Cyst Fibros 2005; 4:107-14. [PMID: 15914093 DOI: 10.1016/j.jcf.2005.01.003] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2003] [Accepted: 01/19/2005] [Indexed: 11/19/2022]
Abstract
Lung transplantation is currently the most effective means of improving survival and quality of life in patients with end-stage cystic fibrosis. In reviewing our 6-year experience we sought to evaluate complications and survival after sequential bilateral lung transplantation. Between October 1996 and October 2002, 114 patients with cystic fibrosis were referred to us from 15 Italian regional centers and 2 support centers for cystic fibrosis as possible candidates for lung transplantation. Of these 114 patients, 99 were included in the waiting list and 15 were refused. The mean time spent on the waiting list was 6.8+/-5.2 months (range 1 day-21 months) for those patients receiving lung transplantation, and 5.4+/-4.5 months (range 10 days-18 months) for those 35 patients who died while on the waiting list. A total 55 patients (6 children and 49 adults), mean age 25.6+/-6.6 years (range 9-52 years), 29 males, underwent bilateral sequential lung transplantation. One patient had a second transplantation 14 months after the first. The most frequent medical non-infective complications after transplantation were chronic renal failure (n=27 patients), diabetes (n=31), osteoporosis (n=17), arterial hypertension (n=14), seizures (n=4), transient cerebral ischaemia (n=1), and transient bilateral blindness (n=1). Bacterial lower airways respiratory infections with the organisms that colonized patients' airways before lung transplantation developed in 42 patients; cytomegalovirus (CMV) infection in 41; and opportunistic infections of the lung with Pneumocystis carinii in 3 patients. Cultures of sputum or bronchoalveolar lavage fluid grew Aspergillus fumigatus in nine patients; aspergillosis of right bronchial anastomosis developed in one patient and a lung infection in another. Another patient had a pulmonary infection secondary to Aspergillus niger. An average of 1.3 episodes of acute rejection developed per patient in the first 6 months after lung transplantation. Freedom from bronchiolitis obliterans syndrome was 95% at 1 year, 82.5% at 2 years, 70% at 3 years, and 65% at 4, 5 and 6 years. Actuarial survival rates were 80% at 1 month, 79% at 1 year, 74% at 2 years, 70% at 3 years and 58% at 4, 5 and 6 years. Ten patients (17.8%) died in the early postoperative period (1-30 days) for the following reasons: primary graft failure (n=4), multiorgan failure (n=3), Burkholderia cepacia sepsis (n=1), myocardial infarction (n=1), and pulmonary embolism (n=1). Mortality was accounted for by 9 patients (16%) who died from 9 to 43 months after lung transplantation, for the following reasons: P. carinii infection (n=2), bronchiolitis obliterans syndrome (n=4), A. fumigatus pulmonary infection (n=1), unknown cause (n=1) and suicide (n=1). In conclusion, the leading causes of morbidity after lung transplantation for cystic fibrosis are pulmonary bacterial infection and opportunistic infections. Bronchiolitis obliterans develops in more than half of lung transplant recipients who survive for more than 3 years and is an important cause of death in the late post transplantation period.
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Affiliation(s)
- Serena Quattrucci
- Cystic Fibrosis Service, Department of Paediatric, Policlinico Umberto I, University of Rome La Sapienza, Viale Regina Elena, 324, 00161 Rome, Italy
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Abstract
The timing of the referral and listing of patients for lung transplantation remains a difficult decision. Life expectancy and quality of life with and without transplantation are the pivotal issues that need to be considered by physicians and presented to prospective transplant candidates. The recognition of recent advances in the understanding of the various primary diseases, other potential therapies, and the latest posttransplant statistics are essential for a balanced discussion or decision about lung transplantation. This article provides a review of these and other pertinent issues for patients with various forms of advanced lung disease.
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Affiliation(s)
- Steven D Nathan
- Lung Transplant Program, INOVA Heart and Lung Transplant Center, INOVA Fairfax Hospital, Falls Church, VA 22042, USA.
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Abstract
Since international recommendations for lung transplant recipients were made in 1998, newer tools for predicting mortality in patients who have end-stage lung disease have been investigated. This article reviews studies for predicting mortality in obstructive, restrictive, pulmonary vascular, and suppurative/bronchiectatic lung disease. Newer considerations for alternative treatments, postoperative risks, and contraindications are also examined. The article aims to provide more accurate data for selecting patients who will benefit from lung transplantation.
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Affiliation(s)
- Andrew D Yu
- Division of Pulmonary and Critical Care Medicine, Loyola University Medical Center, 2160 S. First Avenue, Building 54, Room 131A, Maywood, IL 60153, USA
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Cooper DM. This commentary is based on the recently published article: Tantisira KG, Systrom DM, Ginns LC. An elevated breathing reserve index at the lactate threshold is a predictor of mortality in patients with cystic fibrosis awaiting lung transplantation. Am J Respir Crit Care Med 2002;165;1629-1633. Pediatr Pulmonol 2003; 35:157-9. [PMID: 12567381 DOI: 10.1002/ppul.10255] [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: 11/09/2022]
Affiliation(s)
- Dan Michael Cooper
- College of Medicine, University of California at Irvine, Irvine, California, USA.
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Tobin MJ. Pediatrics, surfactant, and cystic fibrosis in AJRCCM 2002. Am J Respir Crit Care Med 2003; 167:333-44. [PMID: 12554622 DOI: 10.1164/rccm.2212005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Martin J Tobin
- Division of Pulmonary and Critical Care Medicine, Loyola University of Chicago Stritch School of Medicine and Hines Veterans Affairs Hospital, Hines, Illinois 60141, USA.
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Tobin MJ. Chronic obstructive pulmonary disease, pollution, pulmonary vascular disease, transplantation, pleural disease, and lung cancer in AJRCCM 2002. Am J Respir Crit Care Med 2003; 167:356-70. [PMID: 12554624 DOI: 10.1164/rccm.2212003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Martin J Tobin
- Division of Pulmonary and Critical Care Medicine, Loyola University of Chicago Stritch School of Medicine and Hines Veterans Affairs Hospital, Hines, Illinois 60141, USA.
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