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Jen R, Ellis C, Kaminska M, Road J, Ayas N. Noninvasive Home Mechanical Ventilation for Stable Hypercapnic COPD: A Clinical Respiratory Review from Canadian Perspectives. Can Respir J 2023; 2023:8691539. [PMID: 37822670 PMCID: PMC10564575 DOI: 10.1155/2023/8691539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 08/10/2023] [Accepted: 08/22/2023] [Indexed: 10/13/2023] Open
Abstract
Acute short-term noninvasive ventilation (NIV) for hypercapnic respiratory failure in chronic obstructive pulmonary disease (COPD) has well-established benefits; however, the role of long-term home NIV remains controversial. In the past decade, studies utilizing aggressive NIV settings to maximally reduce carbon dioxide levels (PaCO2) have resulted in several positive clinical trials and led to updated guidelines on home NIV for stable hypercapnic COPD patients. This clinical respiratory review discusses the high-intensity NIV approach, summarizes recent key trials and guidelines pertaining to home NIV in COPD, and considers key clinical questions for future research and application in the Canadian context. With recent evidence and Canadian Thoracic Society (CTS) guidelines supporting the use of NIV in carefully selected COPD patients with persistent daytime hypercapnia, we believe it is time to reconsider our approach.
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Affiliation(s)
- Rachel Jen
- Department of Medicine, Division of Respiratory Medicine, University of British Columbia, Vancouver, Canada
| | - Colin Ellis
- Department of Medicine, Division of Respiratory Medicine, University of British Columbia, Vancouver, Canada
- Department of Medicine, Division of Respirology, Critical Care and Sleep Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Marta Kaminska
- Respiratory Division and Sleep Laboratory, McGill University Health Centre, Montreal, Canada
- Respiratory Epidemiology and Clinical Research Unit, Research Institute of the McGill University Health Centre, Montreal, Canada
| | - Jeremy Road
- Department of Medicine, Division of Respiratory Medicine, University of British Columbia, Vancouver, Canada
| | - Najib Ayas
- Department of Medicine, Division of Respiratory Medicine, University of British Columbia, Vancouver, Canada
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Lim E, Harris RA, McKeon HE, Batchelor TJ, Dunning J, Shackcloth M, Anikin V, Naidu B, Belcher E, Loubani M, Zamvar V, Dabner L, Brush T, Stokes EA, Wordsworth S, Paramasivan S, Realpe A, Elliott D, Blazeby J, Rogers CA. Impact of video-assisted thoracoscopic lobectomy versus open lobectomy for lung cancer on recovery assessed using self-reported physical function: VIOLET RCT. Health Technol Assess 2022; 26:1-162. [PMID: 36524582 PMCID: PMC9791462 DOI: 10.3310/thbq1793] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Lung cancer is the leading cause of cancer death. Surgery remains the main method of managing early-stage disease. Minimal-access video-assisted thoracoscopic surgery results in less tissue trauma than open surgery; however, it is not known if it improves patient outcomes. OBJECTIVE To compare the clinical effectiveness and cost-effectiveness of video-assisted thoracoscopic surgery lobectomy with open surgery for the treatment of lung cancer. DESIGN, SETTING AND PARTICIPANTS A multicentre, superiority, parallel-group, randomised controlled trial with blinding of participants (until hospital discharge) and outcome assessors conducted in nine NHS hospitals. Adults referred for lung resection for known or suspected lung cancer, with disease suitable for both surgeries, were eligible. Participants were followed up for 1 year. INTERVENTIONS Participants were randomised 1 : 1 to video-assisted thoracoscopic surgery lobectomy or open surgery. Video-assisted thoracoscopic surgery used one to four keyhole incisions without rib spreading. Open surgery used a single incision with rib spreading, with or without rib resection. MAIN OUTCOME MEASURES The primary outcome was self-reported physical function (using the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire Core 30) at 5 weeks. Secondary outcomes included upstaging to pathologic node stage 2 disease, time from surgery to hospital discharge, pain in the first 2 days, prolonged pain requiring analgesia at > 5 weeks, adverse health events, uptake of adjuvant treatment, overall and disease-free survival, quality of life (Quality of Life Questionnaire Core 30, Quality of Life Questionnaire Lung Cancer 13 and EQ-5D) at 2 and 5 weeks and 3, 6 and 12 months, and cost-effectiveness. RESULTS A total of 503 patients were randomised between July 2015 and February 2019 (video-assisted thoracoscopic surgery, n = 247; open surgery, n = 256). One participant withdrew before surgery. The mean age of patients was 69 years; 249 (49.5%) patients were men and 242 (48.1%) did not have a confirmed diagnosis. Lobectomy was performed in 453 of 502 (90.2%) participants and complete resection was achieved in 429 of 439 (97.7%) participants. Quality of Life Questionnaire Core 30 physical function was better in the video-assisted thoracoscopic surgery group than in the open-surgery group at 5 weeks (video-assisted thoracoscopic surgery, n = 247; open surgery, n = 255; mean difference 4.65, 95% confidence interval 1.69 to 7.61; p = 0.0089). Upstaging from clinical node stage 0 to pathologic node stage 1 and from clinical node stage 0 or 1 to pathologic node stage 2 was similar (p ≥ 0.50). Pain scores were similar on day 1, but lower in the video-assisted thoracoscopic surgery group on day 2 (mean difference -0.54, 95% confidence interval -0.99 to -0.09; p = 0.018). Analgesic consumption was 10% lower (95% CI -20% to 1%) and the median hospital stay was less (4 vs. 5 days, hazard ratio 1.34, 95% confidence interval 1.09, 1.65; p = 0.006) in the video-assisted thoracoscopic surgery group than in the open-surgery group. Prolonged pain was also less (relative risk 0.82, 95% confidence interval 0.72 to 0.94; p = 0.003). Time to uptake of adjuvant treatment, overall survival and progression-free survival were similar (p ≥ 0.28). Fewer participants in the video-assisted thoracoscopic surgery group than in the open-surgery group experienced complications before and after discharge from hospital (relative risk 0.74, 95% confidence interval 0.66 to 0.84; p < 0.001 and relative risk 0.81, 95% confidence interval 0.66 to 1.00; p = 0.053, respectively). Quality of life to 1 year was better across several domains in the video-assisted thoracoscopic surgery group than in the open-surgery group. The probability that video-assisted thoracoscopic surgery is cost-effective at a willingness-to-pay threshold of £20,000 per quality-adjusted life-year is 1. LIMITATIONS Ethnic minorities were under-represented compared with the UK population (< 5%), but the cohort reflected the lung cancer population. CONCLUSIONS Video-assisted thoracoscopic surgery lobectomy was associated with less pain, fewer complications and better quality of life without any compromise to oncologic outcome. Use of video-assisted thoracoscopic surgery is highly likely to be cost-effective for the NHS. FUTURE WORK Evaluation of the efficacy of video-assisted thoracoscopic surgery with robotic assistance, which is being offered in many hospitals. TRIAL REGISTRATION This trial is registered as ISRCTN13472721. FUNDING This project was funded by the National Institute for Health and Care Research ( NIHR ) Health Technology Assessment programme and will be published in full in Health Technology Assessment; Vol. 26, No. 48. See the NIHR Journals Library website for further project information.
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Dretzke J, Wang J, Yao M, Guan N, Ling M, Zhang E, Mukherjee D, Hall J, Jowett S, Mukherjee R, Moore DJ, Turner AM. Home Non-Invasive Ventilation in COPD: A Global Systematic Review. CHRONIC OBSTRUCTIVE PULMONARY DISEASES (MIAMI, FLA.) 2022; 9:237-251. [PMID: 35259290 PMCID: PMC9166324 DOI: 10.15326/jcopdf.2021.0242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/03/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Uncertainty remains around the benefit of home non-invasive ventilation (NIV) for stable chronic obstructive pulmonary disease (COPD) patients and those with a recent exacerbation (post-hospital). The aim of this systematic review was to: (1) update the evidence base with studies published in any language, including Chinese language studies not indexed in standard medical databases, and (2) explore the impact of additional studies on the evidence base. METHODS Standard systematic review methodology was used for identifying and appraising studies. Randomized controlled trials (RCTs) and non-randomized studies reporting mortality, hospitalizations, exacerbations, quality of life, adverse events, or adherence were included. Random effects meta-analysis was undertaken for mortality and hospitalizations, with studies sub-grouped by population and study design. Sensitivity analysis was performed to explore the effect of including studies from Western and non-Western countries. RESULTS A total of 103 studies were included, substantially more than in previous reviews. There was no significant effect on mortality for the stable population. There was a benefit from NIV for the post-hospital population based on non-randomized studies, or RCTs from non-Western countries. There was a small but significant reduction in hospital admissions (1-2/year) with NIV across all sub-groups, and a variable reduction in duration of stay with greater reductions in studies from China. CONCLUSIONS The evidence base on home NIV is considerably larger than previously presented. While NIV may reduce hospital admissions and improve quality of life, there is still little evidence of a reduction in mortality, regardless of country. Individual participant data analysis may clarify which patients would benefit most from NIV.
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Affiliation(s)
- Janine Dretzke
- Institute of Applied Health Research, University of Birmingham, Birmingham, United Kingdom
| | - Jingya Wang
- Institute of Applied Health Research, University of Birmingham, Birmingham, United Kingdom
| | - Mi Yao
- Institute of Applied Health Research, University of Birmingham, Birmingham, United Kingdom
| | - Naijie Guan
- Institute of Applied Health Research, University of Birmingham, Birmingham, United Kingdom
| | - Myra Ling
- Birmingham Medical School, University of Birmingham, Birmingham, United Kingdom
| | - Erica Zhang
- Birmingham Medical School, University of Birmingham, Birmingham, United Kingdom
| | | | - James Hall
- Health Economics Unit, Institute of Applied Health Research, University of Birmingham, Birmingham, United Kingdom
| | - Sue Jowett
- Health Economics Unit, Institute of Applied Health Research, University of Birmingham, Birmingham, United Kingdom
| | - Rahul Mukherjee
- University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham, Birmingham, United Kingdom
| | - David J. Moore
- Institute of Applied Health Research, University of Birmingham, Birmingham, United Kingdom
| | - Alice M. Turner
- Institute of Applied Health Research, University of Birmingham, Birmingham, United Kingdom
- University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham, Birmingham, United Kingdom
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BERES E, BABES K, BERES ZL, DAINA LG, DAINA CM, CHEREGI C, CIUMARNEAN L, DOGARU G. Cost-effectiveness of home non-invasive ventilation in COPD group GOLD D patients. BALNEO AND PRM RESEARCH JOURNAL 2021. [DOI: 10.12680/balneo.2021.459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Introduction. Chronic obstructive pulmonary disease (COPD) is a major cause of morbidity and mortality, estimated to be the third most common cause of death by 2020. The natural evolution of the disease is characterized by frequent exacerbations, severe exacerbations evolving with respiratory acidosis. Introducing home non-invasive ventilation (NIV) in the management of COPD group GOLD (Global Initiative for Chronic Obstructive Lung Disease) D patients generates supplementary costs, but the decreasing of the number of severe exacerbations will decrease the costs of drug treatment and hospitalization. This balance can be verified through a careful study of cost-effectiveness through modern methods of assessing the costs and years of life gained in relation to quality of life.
Material and method. This prospective study took place in the Emergency Department of the Bihor County Clinical Emergency Hospital, Oradea, between 01 October 2017 – 31 October2018, with a follow-up period of 2 years. We included 36 Group risk D COPD patients, presented with severe exacerbation that required NIV; the patients were divided into two study groups according to the treatment scheme after discharge (standard medication according to GOLD guidelines and long-term oxygen therapy - LTOT vs. LTOT + NIV). We follow-up at 2 years with the study group, and analyze the following: number of exacerbations (moderate and severe), number of hospitalizations, mortality rate in two years, average costs for the treatment of exacerbations and for stable COPD periods, quality adjusted life year (QALY).
Results and discussions. From 36 enrolled, 10 patients benefited from home NIV. The number of exacerbations was significantly lower in the NIV group compared with the LTOT group (1.72±0.79 vs 3.54±1.18). The incremental cost-effectiveness ratio (ICER) showed a net gain of 31% from gross product (GDP) per capita (5,641.71 ± 1,737.0-euro vs 9,272.3 ± 3,681.9 euro) per quality adjusted life year (QALY) for each patient.
Conclusions. Introduction home-NIV demonstrated clinical improvement and higher cost-effectiveness over LTOT alone in Class Risk D, COPD patients after discharge following a severe exacerbation.
Keywords: chronic obstructive pulmonary disease, non-invasive ventilation, cost-effectiveness, quality adjusted life year,
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Affiliation(s)
- Enikő BERES
- Cardiology Department, University of Oradea, Faculty of Medicine and Pharmacy, Romania
| | - Katalin BABES
- Cardiology Department, University of Oradea, Faculty of Medicine and Pharmacy, Romania
| | | | - Lucia Georgeta DAINA
- Psycho-neurosciences and Recovery Department, University of Oradea, Faculty of Medicine and Pharmacy, Romania
| | - Cristian Marius DAINA
- Psycho-neurosciences and Recovery Department, University of Oradea, Faculty of Medicine and Pharmacy, Romania
| | - Cornel CHEREGI
- Surgery Department, University of Oradea, Faculty of Medicine and Pharmacy, Romania
| | - Lorena CIUMARNEAN
- Internal Medicine Department, University of Medicine and Pharmacy „Iuliu Hatieganu”Cluj Napoca, Romania
| | - Gabriela DOGARU
- Medical Rehabilitation Department, University of Medicine and Pharmacy „Iuliu Hatieganu”Cluj Napoca, Romania
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Niño de Guzmán Quispe E, Martínez García L, Orrego Villagrán C, Heijmans M, Sunol R, Fraile-Navarro D, Pérez-Bracchiglione J, Ninov L, Salas-Gama K, Viteri García A, Alonso-Coello P. The Perspectives of Patients with Chronic Diseases and Their Caregivers on Self-Management Interventions: A Scoping Review of Reviews. THE PATIENT 2021; 14:719-740. [PMID: 33871808 PMCID: PMC8563562 DOI: 10.1007/s40271-021-00514-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 03/26/2021] [Indexed: 01/28/2023]
Abstract
BACKGROUND Self-management (SM) interventions are supportive interventions systematically provided by healthcare professionals, peers, or laypersons to increase the skills and confidence of patients in their ability to manage chronic diseases. We had two objectives: (1) to summarise the preferences and experiences of patients and their caregivers (informal caregivers and healthcare professionals) with SM in four chronic diseases and (2) to identify and describe the relevant outcomes for SM interventions from these perspectives. METHODS We conducted a mixed-methods scoping review of reviews. We searched three databases until December 2020 for quantitative, qualitative, or mixed-methods reviews exploring patients' and caregivers' preferences or experiences with SM in type 2 diabetes mellitus (T2DM), obesity, chronic obstructive pulmonary disease (COPD), and heart failure (HF). Quantitative data were narratively synthesised, and qualitative data followed a three-step descriptive thematic synthesis. Identified themes were categorised into outcomes or modifiable factors of SM interventions. RESULTS We included 148 reviews covering T2DM (n = 53 [35.8%]), obesity (n = 20 [13.5%]), COPD (n = 32 [21.6%]), HF (n = 38 [25.7%]), and those with more than one disease (n = 5 [3.4%]). We identified 12 main themes. Eight described the process of SM (disease progression, SM behaviours, social support, interaction with healthcare professionals, access to healthcare, costs for patients, culturally defined roles and perceptions, and health knowledge), and four described their experiences with SM interventions (the perceived benefit of the intervention, individualised care, sense of community with peers, and usability of equipment). Most themes and subthemes were categorised as outcomes of SM interventions. CONCLUSION The process of SM shaped the perspectives of patients and their caregivers on SM interventions. Their perspectives were influenced by the perceived benefit of the intervention, the sense of community with peers, the intervention's usability, and the level of individualised care. Our findings can inform the selection of patient-important outcomes, decision-making processes, including the formulation of recommendations, and the design and implementation of SM interventions.
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Affiliation(s)
- Ena Niño de Guzmán Quispe
- Iberoamerican Cochrane Centre (IbCC)-Sant Pau Biomedical Research Institute (IIB-Sant Pau), C/ Sant Antoni Maria Claret 167. Pabellón 18, Planta 0, 08025, Barcelona, Spain.
| | - Laura Martínez García
- Iberoamerican Cochrane Centre (IbCC)-Sant Pau Biomedical Research Institute (IIB-Sant Pau), C/ Sant Antoni Maria Claret 167. Pabellón 18, Planta 0, 08025, Barcelona, Spain
- CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - Carola Orrego Villagrán
- Avedis Donabedian Research Institute (FAD), Barcelona, Spain
- Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Madrid, Spain
- Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Monique Heijmans
- Netherlands Institute for Health Services Research (Nivel), Utrecht, The Netherlands
| | - Rosa Sunol
- Avedis Donabedian Research Institute (FAD), Barcelona, Spain
- Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Madrid, Spain
- Universitat Autònoma de Barcelona, Barcelona, Spain
| | - David Fraile-Navarro
- Australian Institute of Health Innovation, Macquarie University, Sydney, Australia
- Madrid Primary Health Care Service, Madrid, Spain
| | | | | | - Karla Salas-Gama
- Health Services Research Group, Institut de Recerca Vall d'Hebron Hospital, Barcelona, Spain
- Vall d'Hebron University Hospital, Barcelona, Spain
| | - Andrés Viteri García
- Centro de Investigación de Salud Pública y Epidemiología Clínica (CISPEC), Universidad UTE, Quito, Ecuador
- Centro Asociado Cochrane de Ecuador, Universidad UTE, Quito, Ecuador
| | - Pablo Alonso-Coello
- Iberoamerican Cochrane Centre (IbCC)-Sant Pau Biomedical Research Institute (IIB-Sant Pau), C/ Sant Antoni Maria Claret 167. Pabellón 18, Planta 0, 08025, Barcelona, Spain
- CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
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Adab P, Jordan RE, Fitzmaurice D, Ayres JG, Cheng KK, Cooper BG, Daley A, Dickens A, Enocson A, Greenfield S, Haroon S, Jolly K, Jowett S, Lambe T, Martin J, Miller MR, Rai K, Riley RD, Sadhra S, Sitch A, Siebert S, Stockley RA, Turner A. Case-finding and improving patient outcomes for chronic obstructive pulmonary disease in primary care: the BLISS research programme including cluster RCT. PROGRAMME GRANTS FOR APPLIED RESEARCH 2021. [DOI: 10.3310/pgfar09130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background
Chronic obstructive pulmonary disease is a major contributor to morbidity, mortality and health service costs but is vastly underdiagnosed. Evidence on screening and how best to approach this is not clear. There are also uncertainties around the natural history (prognosis) of chronic obstructive pulmonary disease and how it impacts on work performance.
Objectives
Work package 1: to evaluate alternative methods of screening for undiagnosed chronic obstructive pulmonary disease in primary care, with clinical effectiveness and cost-effectiveness analyses and an economic model of a routine screening programme. Work package 2: to recruit a primary care chronic obstructive pulmonary disease cohort, develop a prognostic model [Birmingham Lung Improvement StudieS (BLISS)] to predict risk of respiratory hospital admissions, validate an existing model to predict mortality risk, address some uncertainties about natural history and explore the potential for a home exercise intervention. Work package 3: to identify which factors are associated with employment, absenteeism, presenteeism (working while unwell) and evaluate the feasibility of offering formal occupational health assessment to improve work performance.
Design
Work package 1: a cluster randomised controlled trial with household-level randomised comparison of two alternative case-finding approaches in the intervention arm. Work package 2: cohort study – focus groups. Work package 3: subcohort – feasibility study.
Setting
Primary care settings in West Midlands, UK.
Participants
Work package 1: 74,818 people who have smoked aged 40–79 years without a previous chronic obstructive pulmonary disease diagnosis from 54 general practices. Work package 2: 741 patients with previously diagnosed chronic obstructive pulmonary disease from 71 practices and participants from the work package 1 randomised controlled trial. Twenty-six patients took part in focus groups. Work package 3: occupational subcohort with 248 patients in paid employment at baseline. Thirty-five patients took part in an occupational health intervention feasibility study.
Interventions
Work package 1: targeted case-finding – symptom screening questionnaire, administered opportunistically or additionally by post, followed by diagnostic post-bronchodilator spirometry. The comparator was routine care. Work package 2: twenty-three candidate variables selected from literature and expert reviews. Work package 3: sociodemographic, clinical and occupational characteristics; occupational health assessment and recommendations.
Main outcome measures
Work package 1: yield (screen-detected chronic obstructive pulmonary disease) and cost-effectiveness of case-finding; effectiveness of screening on respiratory hospitalisation and mortality after approximately 4 years. Work package 2: respiratory hospitalisation within 2 years, and barriers to and facilitators of physical activity. Work package 3: work performance – feasibility and acceptability of the occupational health intervention and study processes.
Results
Work package 1: targeted case-finding resulted in greater yield of previously undiagnosed chronic obstructive pulmonary disease than routine care at 1 year [n = 1278 (4%) vs. n = 337 (1%), respectively; adjusted odds ratio 7.45, 95% confidence interval 4.80 to 11.55], and a model-based estimate of a regular screening programme suggested an incremental cost-effectiveness ratio of £16,596 per additional quality-adjusted life-year gained. However, long-term follow-up of the trial showed that at ≈4 years there was no clear evidence that case-finding, compared with routine practice, was effective in reducing respiratory admissions (adjusted hazard ratio 1.04, 95% confidence interval 0.73 to1.47) or mortality (hazard ratio 1.15, 95% confidence interval 0.82 to 1.61). Work package 2: 2305 patients, comprising 1564 with previously diagnosed chronic obstructive pulmonary disease and 741 work package 1 participants (330 with and 411 without obstruction), were recruited. The BLISS prognostic model among cohort participants with confirmed airflow obstruction (n = 1894) included 6 of 23 candidate variables (i.e. age, Chronic Obstructive Pulmonary Disease Assessment Test score, 12-month respiratory admissions, body mass index, diabetes and forced expiratory volume in 1 second percentage predicted). After internal validation and adjustment (uniform shrinkage factor 0.87, 95% confidence interval 0.72 to 1.02), the model discriminated well in predicting 2-year respiratory hospital admissions (c-statistic 0.75, 95% confidence interval 0.72 to 0.79). In focus groups, physical activity engagement was related to self-efficacy and symptom severity. Work package 3: in the occupational subcohort, increasing dyspnoea and exposure to inhaled irritants were associated with lower work productivity at baseline. Longitudinally, increasing exacerbations and worsening symptoms, but not a decline in airflow obstruction, were associated with absenteeism and presenteeism. The acceptability of the occupational health intervention was low, leading to low uptake and low implementation of recommendations and making a full trial unfeasible.
Limitations
Work package 1: even with the most intensive approach, only 38% of patients responded to the case-finding invitation. Management of case-found patients with chronic obstructive pulmonary disease in primary care was generally poor, limiting interpretation of the long-term effectiveness of case-finding on clinical outcomes. Work package 2: the components of the BLISS model may not always be routinely available and calculation of the score requires a computerised system. Work package 3: relatively few cohort participants were in paid employment at baseline, limiting the interpretation of predictors of lower work productivity.
Conclusions
This programme has addressed some of the major uncertainties around screening for undiagnosed chronic obstructive pulmonary disease and has resulted in the development of a novel, accurate model for predicting respiratory hospitalisation in people with chronic obstructive pulmonary disease and the inception of a primary care chronic obstructive pulmonary disease cohort for longer-term follow-up. We have also identified factors that may affect work productivity in people with chronic obstructive pulmonary disease as potential targets for future intervention.
Future work
We plan to obtain data for longer-term follow-up of trial participants at 10 years. The BLISS model needs to be externally validated. Our primary care chronic obstructive pulmonary disease cohort is a unique resource for addressing further questions to better understand the prognosis of chronic obstructive pulmonary disease.
Trial registration
Current Controlled Trials ISRCTN14930255.
Funding
This project was funded by the National Institute for Health Research (NIHR) Programme Grants for Applied Research programme and will be published in full in Programme Grants for Applied Research; Vol. 9, No. 13. See the NIHR Journals Library website for further project information.
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Affiliation(s)
- Peymané Adab
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Rachel E Jordan
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - David Fitzmaurice
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Jon G Ayres
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - KK Cheng
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Brendan G Cooper
- Lung Function and Sleep, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - Amanda Daley
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Andrew Dickens
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Alexandra Enocson
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Sheila Greenfield
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Shamil Haroon
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Kate Jolly
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Sue Jowett
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Tosin Lambe
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - James Martin
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Martin R Miller
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Kiran Rai
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Richard D Riley
- Centre for Prognosis Research, Research Institute for Primary Care and Health Sciences, Keele University, Keele, UK
| | - Steve Sadhra
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Alice Sitch
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | | | - Robert A Stockley
- Respiratory Medicine, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - Alice Turner
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
- Respiratory Medicine, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
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Sørensen SS, Storgaard LH, Weinreich UM. Cost-Effectiveness of Domiciliary High Flow Nasal Cannula Treatment in COPD Patients with Chronic Respiratory Failure. CLINICOECONOMICS AND OUTCOMES RESEARCH 2021; 13:553-564. [PMID: 34168472 PMCID: PMC8219115 DOI: 10.2147/ceor.s312523] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 05/13/2021] [Indexed: 12/19/2022] Open
Abstract
PURPOSE To evaluate the cost-effectiveness of long-term domiciliary high flow nasal cannula (HFNC) treatment in COPD patients with chronic respiratory failure. PATIENTS AND METHODS A cohort of 200 COPD patients were equally randomized into usual care ± HFNC and followed for 12 months. The outcome of the analysis was the incremental cost per quality-adjusted life-year (QALY) gained, and the analysis was conducted from a healthcare sector perspective. Data on the patients' health-related quality of life (HRQoL), gathered throughout the trial using the St. George's Respiratory Questionnaire (SGRQ), was converted into EQ-5D-3L health state utility values. Costs were estimated using Danish registers and valued in British pounds (£) at price level 2019. Scenario analyses and probabilistic sensitivity analyses were conducted to assess the uncertainty of the results. RESULTS The adjusted mean difference in QALYs between the HFNC group and the control group was 0.059 (95% CI: 0.017; 0.101), and the adjusted mean difference in total costs was £212 (95% CI: -1572; 1995). The analysis resulted in an incremental cost-effectiveness ratio (ICER) of £3605 per QALY gained. At threshold values of £20.000-30.000 per QALY gained, the intervention had an 83-92% probability of being cost-effective. The scenario analyses all revealed ICERs below the set threshold value and demonstrated the robustness of the main result. CONCLUSION This is the first cost-effectiveness study on domiciliary HFNC in Europe. The findings demonstrate that long-term domiciliary HFNC treatment is very likely to be a cost-effective addition to usual care for COPD patients with chronic respiratory failure. The results must be interpreted in light of the uncertainty associated with the indirect estimation of health state utilities.
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Affiliation(s)
- Sabrina Storgaard Sørensen
- Danish Center for Health Care Improvements, Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Line Hust Storgaard
- Department of Respiratory Diseases, Aalborg University Hospital, Aalborg, Denmark
| | - Ulla Møller Weinreich
- Department of Respiratory Diseases, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
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Camus-García E, González-González AI, Heijmans M, Niño de Guzmán E, Valli C, Beltran J, Pardo-Hernández H, Ninov L, Strammiello V, Immonen K, Mavridis D, Ballester M, Suñol R, Orrego C. Self-management interventions for adults living with Chronic Obstructive Pulmonary Disease (COPD): The development of a Core Outcome Set for COMPAR-EU project. PLoS One 2021; 16:e0247522. [PMID: 33647039 PMCID: PMC7920347 DOI: 10.1371/journal.pone.0247522] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 02/09/2021] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND A large body of evidence suggests that self-management interventions (SMIs) may improve outcomes in chronic obstructive pulmonary disease (COPD). However, accurate comparisons of the relative effectiveness of SMIs are challenging, partly due to heterogeneity of outcomes across trials and uncertainty about the importance of these outcomes for patients. We aimed to develop a core set of patient-relevant outcomes (COS) for SMIs trials to enhance comparability of interventions and ensure person-centred care. METHODS We undertook an innovative approach consisting of four interlinked stages: i) Development of an initial catalogue of outcomes from previous EU-funded projects and/or published studies, ii) Scoping review of reviews on patients and caregivers' perspectives to identify outcomes of interest, iii) Two-round Delphi online survey with patients and patient representatives to rate the importance of outcomes, and iv) Face-to-face consensus workshop with patients, patient representatives, health professionals and researchers to develop the COS. RESULTS From an initial list of 79 potential outcomes, 16 were included in the COS plus one supplementary outcome relevant to all participants. These were related to patient and caregiver knowledge/competence, self-efficacy, patient activation, self-monitoring, adherence, smoking cessation, COPD symptoms, physical activity, sleep quality, caregiver quality of life, activities of daily living, coping with the disease, participation and decision-making, emergency room visits/admissions and cost effectiveness. CONCLUSION The development of the COPD COS for the evaluation of SMIs will increase consistency in the measurement and reporting of outcomes across trials. It will also contribute to more personalized health care and more informed health decisions in clinical practice as patients' preferences regarding COPD outcomes are more systematically included.
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Affiliation(s)
- Estela Camus-García
- Avedis Donabedian Research Institute (FAD), Universitat Autonòma de Barcelona, Barcelona, Spain
| | - Ana Isabel González-González
- Avedis Donabedian Research Institute (FAD), Universitat Autonòma de Barcelona, Barcelona, Spain
- Institute of General Practice, Goethe University, Frankfurt, Germany
- Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Spain
| | - Monique Heijmans
- Netherlands Institute for Health Services Research (NIVEL), Utrecht, The Netherlands
| | - Ena Niño de Guzmán
- Iberoamerican Cochrane Centre Barcelona, Department of Clinical Epidemiology and Public Health, Biomedical Research Institute San Pau (IIB Sant Pau), Barcelona, Spain
| | - Claudia Valli
- Department of Paediatrics, Obstetrics, Gynaecology and Preventive Medicine, Universidad Atónoma de Barcelona, Barcelona, Spain
- Iberoamerican Cochrane Centre Barcelona, Biomedical Research Institute San Pau (IIB Sant Pau), Barcelona, Spain
| | - Jessica Beltran
- Iberoamerican Cochrane Centre Barcelona, Biomedical Research Institute San Pau (IIB Sant Pau), Barcelona, Spain
| | - Hector Pardo-Hernández
- Iberoamerican Cochrane Centre Barcelona, Biomedical Research Institute San Pau (IIB Sant Pau) - CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain
| | | | | | | | - Dimitris Mavridis
- Department of Primary Education, University of Ioannina, Ioannina, Greece
| | - Marta Ballester
- Avedis Donabedian Research Institute (FAD), Universitat Autonòma de Barcelona, Barcelona, Spain
- Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Spain
| | - Rosa Suñol
- Avedis Donabedian Research Institute (FAD), Universitat Autonòma de Barcelona, Barcelona, Spain
- Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Spain
| | - Carola Orrego
- Avedis Donabedian Research Institute (FAD), Universitat Autonòma de Barcelona, Barcelona, Spain
- Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Spain
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9
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Development and Relevance of Hypercapnia in COPD. Can Respir J 2021; 2021:6623093. [PMID: 33688382 PMCID: PMC7920710 DOI: 10.1155/2021/6623093] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 01/08/2021] [Accepted: 02/08/2021] [Indexed: 11/17/2022] Open
Abstract
Background Identification of patients who may become hypercapnic, or develop acidotic hypercapnic respiratory failure (AHRF), is important in chronic obstructive pulmonary disease (COPD) to avoid hospital admission and select patients for use of home NIV. This study aimed to identify factors associated with presence and development of hypercapnia. Methods 1224 patients, 637 with COPD and 587 with alpha 1 antitrypsin deficiency (AATD), from 4 previously established patient cohorts, were included in cross-sectional analyses of hypercapnia (PaCO2 ≥ 6.5 kPa or 48.8 mmHg), focusing on phenotypic features of COPD and mortality. Longitudinal associations of rising PaCO2 were also assessed. A second cohort of 160 COPD patients underwent sleep studies and 1-year follow-up, analysing in a similar way, incorporating additional information from their sleep studies if appropriate. Results Hypercapnia was 15 times more common in usual COPD than AATD (p < 0.01) after adjustment for baseline differences by regression. Independent predictors of hypercapnia in COPD included FEV1 and current use of oxygen; these variables, together with lack of emphysema, explained 11% of variance in CO2. Increasing PaCO2 also associated with higher risk of death (p=0.03). 44/160 patients exhibited sleep disordered breathing. The sleep study cohort also showed an association of low FEV1 with hypercapnia. Prior hospital admission for AHRF was also clinically significant, being a feature of almost double the number of hypercapnic patients in both test and sleep study COPD cohorts. Conclusion Lower FEV1 and prior AHRF are the main associations of hypercapnia in COPD, which carries a poor prognosis, particularly worsening over time.
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10
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Md Reazaul Karim H, Esquinas AM. Feasibility of Domiciliary Non-Invasive Mechanical Ventilation in Elderly Patients with Chronic Respiratory Failure: Is It without Limits? Turk Thorac J 2020; 21:361. [PMID: 33031731 DOI: 10.5152/turkthoracj.2019.19069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 08/31/2019] [Indexed: 11/22/2022]
Affiliation(s)
- Habib Md Reazaul Karim
- Department of Anaesthesiology and Critical Care, All India Institute of Medical Sciences, Raipur, India
| | - Antonio M Esquinas
- International School of Non-invasive Ventilation, Hospital General Universitario Morales Meseguer, Murcia, Spain
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11
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Lambe T, Adab P, Jordan RE, Sitch A, Enocson A, Jolly K, Marsh J, Riley R, Miller M, Cooper BG, Turner AM, Ayres JG, Stockley R, Greenfield S, Siebert S, Daley A, Cheng KK, Fitzmaurice D, Jowett S. Model-based evaluation of the long-term cost-effectiveness of systematic case-finding for COPD in primary care. Thorax 2019; 74:730-739. [PMID: 31285359 PMCID: PMC6703126 DOI: 10.1136/thoraxjnl-2018-212148] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 03/15/2019] [Accepted: 04/01/2019] [Indexed: 11/17/2022]
Abstract
Introduction ‘One-off’ systematic case-finding for COPD using a respiratory screening questionnaire is more effective and cost-effective than routine care at identifying new cases. However, it is not known whether early diagnosis and treatment is beneficial in the longer term. We estimated the long-term cost-effectiveness of a regular case-finding programme in primary care. Methods A Markov decision analytic model was developed to compare the cost-effectiveness of a 3-yearly systematic case-finding programme targeted to ever smokers aged ≥50 years with the current routine diagnostic process in UK primary care. Patient-level data on case-finding pathways was obtained from a large randomised controlled trial. Information on the natural history of COPD and treatment effects was obtained from a linked COPD cohort, UK primary care database and published literature. The discounted lifetime cost per quality-adjusted life-year (QALY) gained was calculated from a health service perspective. Results The incremental cost-effectiveness ratio of systematic case-finding versus current care was £16 596 per additional QALY gained, with a 78% probability of cost-effectiveness at a £20 000 per QALY willingness-to-pay threshold. The base case result was robust to multiple one-way sensitivity analyses. The main drivers were response rate to the initial screening questionnaire and attendance rate for the confirmatory spirometry test. Discussion Regular systematic case-finding for COPD using a screening questionnaire in primary care is likely to be cost-effective in the long-term despite uncertainties in treatment effectiveness. Further knowledge of the natural history of case-found patients and the effectiveness of their management will improve confidence to implement such an approach.
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Affiliation(s)
- Tosin Lambe
- Health Economics Unit, University of Birmingham, Birmingham, UK
| | - Peymane Adab
- Institute of Applied Health Research, The University of Birmingham, Birmingham, UK
| | - Rachel E Jordan
- Institute of Applied Health Research, The University of Birmingham, Birmingham, UK
| | - Alice Sitch
- Institute of Applied Health Research, The University of Birmingham, Birmingham, UK
| | - Alex Enocson
- Institute of Applied Health Research, The University of Birmingham, Birmingham, UK
| | - Kate Jolly
- Institute of Applied Health Research, The University of Birmingham, Birmingham, UK
| | - Jen Marsh
- Institute of Applied Health Research, The University of Birmingham, Birmingham, UK
| | - Richard Riley
- Research Institute for Primary Care and Health Sciences, Keele University, Staffordshire, UK
| | - Martin Miller
- Institute of Occupational and Environmental Medicine, University of Birmingham, Birmingham, West Midlands, UK.,Institute of Applied Health Research, University of Birmingham, Birmingham, West Midlands, UK
| | - Brendan G Cooper
- Lung Investigation Unit, University Hospital Birmingham, Birmingham, UK
| | - Alice Margaret Turner
- School of Clinical and Experimental Medicine, University of Birmingham, Birmingham, Birmingham, UK
| | - Jon G Ayres
- Institute of Occupational and Environmental Med, University of Birmingham, Birmingham, UK
| | | | - Sheila Greenfield
- Institute of Applied Health Research, The University of Birmingham, Birmingham, UK
| | - Stanley Siebert
- Birmingham Business School, University of Birmingham, Birmingham, UK
| | - Amanda Daley
- Institute of Applied Health Research, The University of Birmingham, Birmingham, UK
| | - K K Cheng
- Institute of Applied Health Research, The University of Birmingham, Birmingham, UK
| | - David Fitzmaurice
- Institute of Applied Health Research, The University of Birmingham, Birmingham, UK
| | - Sue Jowett
- Health Economics Unit, University of Birmingham, Birmingham, UK
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12
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Brat K, Plutinsky M, Hejduk K, Svoboda M, Popelkova P, Zatloukal J, Volakova E, Fecaninova M, Heribanova L, Koblizek V. Respiratory parameters predict poor outcome in COPD patients, category GOLD 2017 B. Int J Chron Obstruct Pulmon Dis 2018; 13:1037-1052. [PMID: 29628761 PMCID: PMC5877495 DOI: 10.2147/copd.s147262] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Respiratory parameters are important predictors of prognosis in the COPD population. Global Initiative for Obstructive Lung Disease (GOLD) 2017 Update resulted in a vertical shift of patients across COPD categories, with category B being the most populous and clinically heterogeneous. The aim of our study was to investigate whether respiratory parameters might be associated with increased all-cause mortality within GOLD category B patients. Methods The data were extracted from the Czech Multicentre Research Database, a prospective, noninterventional multicenter study of COPD patients. Kaplan-Meier survival analyses were performed at different levels of respiratory parameters (partial pressure of oxygen in arterial blood [PaO2], partial pressure of arterial carbon dioxide [PaCO2] and greatest decrease of basal peripheral capillary oxygen saturation during 6-minute walking test [6-MWT]). Univariate analyses using the Cox proportional hazard model and multivariate analyses were used to identify risk factors for mortality in hypoxemic and hypercapnic individuals with COPD. Results All-cause mortality in the cohort at 3 years of prospective follow-up reached 18.4%. Chronic hypoxemia (PaO2 <7.3 kPa), hypercapnia (PaCO2 >7.0 kPa) and oxygen desaturation during the 6-MWT were predictors of long-term mortality in COPD patients with forced expiratory volume in 1 second ≤60% for the overall cohort and for GOLD B category patients. Univariate analyses confirmed the association among decreased oxemia (<7.3 kPa), increased capnemia (>7.0 kPa), oxygen desaturation during 6-MWT and mortality in the studied groups of COPD subjects. Multivariate analysis identified PaO2 <7.3 kPa as a strong independent risk factor for mortality. Conclusion Survival analyses showed significantly increased all-cause mortality in hypoxemic and hypercapnic GOLD B subjects. More important, PaO2 <7.3 kPa was the strongest risk factor, especially in category B patients. In contrast, the majority of the tested respiratory parameters did not show a difference in mortality in the GOLD category D cohort.
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Affiliation(s)
- Kristian Brat
- Department of Respiratory Diseases, Faculty of Medicine, University Hospital Brno, Masaryk University, Brno, Czech Republic
| | - Marek Plutinsky
- Department of Respiratory Diseases, Faculty of Medicine, University Hospital Brno, Masaryk University, Brno, Czech Republic
| | - Karel Hejduk
- Faculty of Medicine, Institute of Biostatistics and Analyses, Masaryk University, Brno, Czech Republic
| | - Michal Svoboda
- Faculty of Medicine, Institute of Biostatistics and Analyses, Masaryk University, Brno, Czech Republic
| | | | | | - Eva Volakova
- Pulmonary Department, University Hospital, Olomouc, Czech Republic
| | | | - Lucie Heribanova
- Department of Respiratory Medicine, Thomayer Hospital, Prague, Czech Republic
| | - Vladimir Koblizek
- Pulmonary Department, Faculty of Medicine in Hradec Kralove, University Hospital Hradec Kralove, Charles University, Hradec Kralove, Czech Republic
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13
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Jerpseth H, Dahl V, Nortvedt P, Halvorsen K. Older patients with late-stage COPD: Their illness experiences and involvement in decision-making regarding mechanical ventilation and noninvasive ventilation. J Clin Nurs 2017; 27:582-592. [PMID: 28618112 DOI: 10.1111/jocn.13925] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/04/2017] [Indexed: 11/29/2022]
Abstract
AIMS AND OBJECTIVES To explore the illness experiences of older patients with late-stage chronic obstructive pulmonary disease and to develop knowledge about how patients perceive their preferences to be taken into account in decision-making processes concerning mechanical ventilation and/or noninvasive ventilation. BACKGROUND Decisions about whether older patients with late-stage chronic obstructive pulmonary disease will benefit from noninvasive ventilation treatment or whether the time has come for palliative treatment are complicated, both medically and ethically. Knowledge regarding patients' values and preferences concerning ventilation support is crucial yet often lacking. DESIGN Qualitative design with a hermeneutic-phenomenological approach. METHODS The data consist of qualitative in-depth interviews with 12 patients from Norway diagnosed with late-stage chronic obstructive pulmonary disease. The data were analysed within the three interpretative contexts described by Kvale and Brinkmann. RESULTS The participants described their lives as fragile and burdensome, frequently interrupted by unpredictable and frightening exacerbations. They lacked information about their diagnosis and prognosis and were often not included in decisions about noninvasive ventilation or mechanical ventilation. CONCLUSION Findings indicate that these patients are highly vulnerable and have complex needs in terms of nursing care and medical treatment. Moreover, they need access to proactive advanced care planning and an opportunity to discuss their wishes for treatment and care. RELEVANCE TO CLINICAL PRACTICE To provide competent care for these patients, healthcare personnel must be aware of how patients experience being seriously ill. Advanced care planning and shared decision-making should be initiated alongside the curative treatment.
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Affiliation(s)
- Heidi Jerpseth
- Faculty of Health Science, Oslo and Akershus University College of Applied Sciences, Oslo, Norway
| | - Vegard Dahl
- Department of Anaesthesia and Intensive Care, Akershus University Hospital, Lørenskog, Norway
| | - Per Nortvedt
- Centre for Medical Ethics, University of Oslo, Norway
| | - Kristin Halvorsen
- Faculty of Health Science, Oslo and Akershus University College of Applied Sciences, Oslo, Norway
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14
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Ñamendys-Silva SA. Noninvasive ventilation in hypercapnic chronic obstructive pulmonary disease. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2017; 21:266. [PMID: 29073934 PMCID: PMC5659035 DOI: 10.1186/s13054-017-1854-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 10/05/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Silvio A Ñamendys-Silva
- Department of Critical Care Medicine, Fundación Clínica Médica Sur, Mexico City, Mexico. .,Department of Critical Care Medicine, Instituto Nacional de Cancerología, Mexico City, Mexico. .,Department of Critical Care Medicine, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico. .,, Puente de Piedra 150,Toriello Guerra, Torre 1, Piso 1, 14050, Mexico City, Mexico.
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15
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Nilius G, Katamadze N, Domanski U, Schroeder M, Franke KJ. Non-invasive ventilation with intelligent volume-assured pressure support versus pressure-controlled ventilation: effects on the respiratory event rate and sleep quality in COPD with chronic hypercapnia. Int J Chron Obstruct Pulmon Dis 2017; 12:1039-1045. [PMID: 28408814 PMCID: PMC5383083 DOI: 10.2147/copd.s126970] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND COPD patients who develop chronic hypercapnic respiratory failure have a poor prognosis. Treatment of choice, especially the best form of ventilation, is not well known. OBJECTIVES This study compared the effects of pressure-controlled (spontaneous timed [ST]) non-invasive ventilation (NIV) and NIV with intelligent volume-assured pressure support (IVAPS) in chronic hypercapnic COPD patients regarding the effects on alveolar ventilation, adverse patient/ventilator interactions and sleep quality. METHODS This prospective, single-center, crossover study randomized patients to one night of NIV using ST then one night with the IVAPS function activated, or vice versa. Patients were monitored using polysomnography (PSG) and transcutaneous carbon dioxide pressure (PtcCO2) measurement. Patients rated their subjective experience (total score, 0-45; lower scores indicate better acceptability). RESULTS Fourteen patients were included (4 females, age 59.4±8.9 years). The total number of respiratory events was low, and similar under pressure-controlled (5.4±6.7) and IVAPS (8.3±10.2) conditions (P=0.064). There were also no clinically relevant differences in PtcCO2 between pressure-controlled and IVAPS NIV (52.9±6.2 versus 49.1±6.4 mmHg). Respiratory rate was lower under IVAPS overall; between-group differences reached statistical significance during wakefulness and non-rapid eye movement sleep. Ventilation pressures were 2.6 cmH2O higher under IVAPS versus pressure-controlled ventilation, resulting in a 20.1 mL increase in breathing volume. Sleep efficiency was slightly higher under pressure-controlled ventilation versus IVAPS. Respiratory arousals were uncommon (24.4/h [pressure-controlled] versus 25.4/h [IVAPS]). Overall patient assessment scores were similar, although there was a trend toward less discomfort during IVAPS. CONCLUSION Our results show that IVAPS NIV allows application of higher nocturnal ventilation pressures versus ST without affecting sleep quality or inducing ventilation- associated events.
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Affiliation(s)
- Georg Nilius
- HELIOS Klinik Hagen-Ambrock
- Internal Medicine I, Witten/Herdecke University, Witten, Germany
| | - Nato Katamadze
- HELIOS Klinik Hagen-Ambrock
- Internal Medicine I, Witten/Herdecke University, Witten, Germany
| | | | | | - Karl-Josef Franke
- HELIOS Klinik Hagen-Ambrock
- Internal Medicine I, Witten/Herdecke University, Witten, Germany
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16
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Sutherasan Y, Ball L, Raimondo P, Caratto V, Sanguineti E, Costantino F, Ferretti M, Kacmarek RM, Pelosi P. Effects of ventilator settings, nebulizer and exhalation port position on albuterol delivery during non-invasive ventilation: an in-vitro study. BMC Pulm Med 2017; 17:9. [PMID: 28068958 PMCID: PMC5223303 DOI: 10.1186/s12890-016-0347-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 12/12/2016] [Indexed: 11/14/2022] Open
Abstract
Background Few studies have investigated the factors affecting aerosol delivery during non-invasive ventilation (NIV). Our aim was to investigate, using a bench-top model, the effect of different ventilator settings and positions of the exhalation port and nebulizer on the amount of albuterol delivered to a lung simulator. Methods A lung model simulating spontaneous breathing was connected to a single-limb NIV ventilator, set in bi-level positive airway pressure (BIPAP) with inspiratory/expiratory pressures of 10/5, 15/10, 15/5, and 20/10 cmH2O, or continuous positive airway pressure (CPAP) of 5 and 10 cmH2O. Three delivery circuits were tested: a vented mask with the nebulizer directly connected to the mask, and an unvented mask with a leak port placed before and after the nebulizer. Albuterol was collected on a filter placed after the mask and then the delivered amount was measured with infrared spectrophotometry. Results Albuterol delivery during NIV varied between 6.7 ± 0.4% to 37.0 ± 4.3% of the nominal dose. The amount delivered in CPAP and BIPAP modes was similar (22.1 ± 10.1 vs. 24.0 ± 10.0%, p = 0.070). CPAP level did not affect delivery (p = 0.056); in BIPAP with 15/5 cmH2O pressure the delivery was higher compared to 10/5 cmH2O (p = 0.033) and 20/10 cmH2O (p = 0.014). Leak port position had a major effect on delivery in both CPAP and BIPAP, the best performances were obtained with the unvented mask, and the nebulizer placed between the leak port and the mask (p < 0.001). Conclusions In this model, albuterol delivery was marginally affected by ventilatory settings in NIV, while position of the leak port had a major effect. Nebulizers should be placed between an unvented mask and the leak port in order to maximize aerosol delivery.
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Affiliation(s)
- Yuda Sutherasan
- IRCCS AOU San Martino-IST, Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Genoa, Italy.,Division of pulmonary and critical care medicine, Faculty of medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Lorenzo Ball
- IRCCS AOU San Martino-IST, Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Genoa, Italy.
| | - Pasquale Raimondo
- IRCCS AOU San Martino-IST, Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Genoa, Italy.,Dipartimento di Anestesia, Rianimazione e Terapia Intensiva, Università degli Studi di Foggia, Foggia, Italy
| | - Valentina Caratto
- Department of Chemistry and Industrial Chemistry, University of Genoa, Genoa, Italy.,SPIN-CNR, Genoa, Italy
| | - Elisa Sanguineti
- Department of Chemistry and Industrial Chemistry, University of Genoa, Genoa, Italy.,SPIN-CNR, Genoa, Italy
| | - Federico Costantino
- IRCCS AOU San Martino-IST, Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Genoa, Italy
| | - Maurizio Ferretti
- Department of Chemistry and Industrial Chemistry, University of Genoa, Genoa, Italy.,SPIN-CNR, Genoa, Italy
| | - Robert M Kacmarek
- Department of Anesthesiology, Harvard Medical school, Department of Anesthesiology, Critical Care and Pain Medicine, and the Department of Respiratory Care, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Paolo Pelosi
- IRCCS AOU San Martino-IST, Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Genoa, Italy
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17
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Gouda P, Chua J, Langan D, Hannon T, Scott A, O’Regan A. A decade of domiciliary non-invasive ventilation in the west of Ireland. Ir J Med Sci 2016; 186:505-510. [DOI: 10.1007/s11845-016-1516-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 10/01/2016] [Indexed: 11/30/2022]
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