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Demoule A, Baptiste A, Thille AW, Similowski T, Ragot S, Prat G, Mercat A, Girault C, Carteaux G, Boulain T, Perbet S, Decavèle M, Belin L, Frat JP. Dyspnea is severe and associated with a higher intubation rate in de novo acute hypoxemic respiratory failure. Crit Care 2024; 28:174. [PMID: 38783367 PMCID: PMC11118550 DOI: 10.1186/s13054-024-04903-5] [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: 01/16/2024] [Accepted: 04/05/2024] [Indexed: 05/25/2024] Open
Abstract
BACKGROUND Dyspnea is a key symptom of de novo acute hypoxemic respiratory failure. This study explores dyspnea and its association with intubation and mortality in this population. METHODS This was a secondary analysis of a multicenter, randomized, controlled trial. Dyspnea was quantified by a visual analog scale (dyspnea-VAS) from zero to 100 mm. Dyspnea was measured in 259 of the 310 patients included. Factors associated with intubation were assessed with a competing risks model taking into account ICU discharge. The Cox model was used to evaluate factors associated with 90-day mortality. RESULTS At baseline (randomization in the parent trial), median dyspnea-VAS was 46 (interquartile range, 16-65) mm and was ≥ 40 mm in 146 patients (56%). The intubation rate was 45%. Baseline variables independently associated with intubation were moderate (dyspnea-VAS 40-64 mm) and severe (dyspnea-VAS ≥ 65 mm) dyspnea at baseline (sHR 1.96 and 2.61, p = 0.023), systolic arterial pressure (sHR 2.56, p < 0.001), heart rate (sHR 1.94, p = 0.02) and PaO2/FiO2 (sHR 0.34, p = 0.028). 90-day mortality was 20%. The cumulative probability of survival was lower in patients with baseline dyspnea-VAS ≥ 40 mm (logrank test, p = 0.049). Variables independently associated with mortality were SAPS 2 ≥ 25 (p < 0.001), moderate-to-severe dyspnea at baseline (p = 0.073), PaO2/FiO2 (p = 0.118), and treatment arm (p = 0.046). CONCLUSIONS In patients admitted to the ICU for de novo acute hypoxemic respiratory failure, dyspnea is associated with a higher risk of intubation and with a higher mortality. TRIAL REGISTRATION clinicaltrials.gov Identifier # NCT01320384.
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Affiliation(s)
- Alexandre Demoule
- INSERM, UMRS1158 Neurophysiologie Respiratoire Expérimentale et Clinique, Sorbonne Université, 75005, Paris, France.
- Groupe Hospitalier Universitaire APHP-Sorbonne Université, Site Pitié-Salpêtrière, Service de Médecine Intensive et Réanimation (Département R3S), Hôpital Universitaire Pitié-Salpêtrière, AP-HP, 47-83 Boulevard de L'Hôpital, 75651, Paris Cedex 13, France.
| | - Amandine Baptiste
- Groupe Hospitalier Universitaire APHP-Sorbonne Université, Site Pitié-Salpêtrière, Unité de Recherche Clinique, AP-HP, Paris, France
| | - Arnaud W Thille
- Médecine Intensive Réanimation, Centre Hospitalier Universitaire de Poitiers, Poitiers, France
- Centre d'Investigation Clinique 1402 ALIVE, Université de Poitiers, Poitiers, France
| | - Thomas Similowski
- INSERM, UMRS1158 Neurophysiologie Respiratoire Expérimentale et Clinique, Sorbonne Université, 75005, Paris, France
- Groupe Hospitalier Universitaire APHP-Sorbonne Université, Site Pitié-Salpêtrière, Département R3S, AP-HP, 75013, Paris, France
| | - Stephanie Ragot
- Centre d'Investigation Clinique 1402 ALIVE, Université de Poitiers, Poitiers, France
| | - Gwénael Prat
- Service de Médecine Intensive et Réanimation, CHU de Brest, Brest, France
| | - Alain Mercat
- Service de Réanimation médicale et Médecine Hyperbare, Centre Hospitalier Régional Universitaire, Angers, France
| | - Christophe Girault
- UNIROUEN, UR 3830, Medical Intensive Care Unit, Rouen University Hospital, Normandie University, Rouen, France
| | - Guillaume Carteaux
- Hôpitaux Universitaires Henri Mondor, Service de Médecine Intensive Réanimation, Université Paris Est Créteil, Groupe de Recherche Clinique CARMAS, AP-HP, Créteil, France
| | - Thierry Boulain
- Médecine Intensive Réanimation, Centre Hospitalier Universitaire d'Orléans, Orléans, France
| | - Sébastien Perbet
- Réanimation Médico-Chirurgicale, CHU de Clermont-Ferrand, Clermont-Ferrand, France
- GReD, UMR/CNRS 6293, INSERM U1103, Université Clermont Auvergne, Clermont-Ferrand, France
| | - Maxens Decavèle
- INSERM, UMRS1158 Neurophysiologie Respiratoire Expérimentale et Clinique, Sorbonne Université, 75005, Paris, France
- Groupe Hospitalier Universitaire APHP-Sorbonne Université, Site Pitié-Salpêtrière, Service de Médecine Intensive et Réanimation (Département R3S), Hôpital Universitaire Pitié-Salpêtrière, AP-HP, 47-83 Boulevard de L'Hôpital, 75651, Paris Cedex 13, France
| | - Lisa Belin
- Site Pitié-Salpêtrière, Département de Santé Publique, INSERM, Institut Pierre Louis d'Epidémiologie Et de Santé Publique, AP-HP, APHP-Sorbonne Université, Paris, France
| | - Jean-Pierre Frat
- Médecine Intensive Réanimation, Centre Hospitalier Universitaire de Poitiers, Poitiers, France
- Centre d'Investigation Clinique 1402 ALIVE, Université de Poitiers, Poitiers, France
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Johnson MJ, Pitel L, Currow DC, Forbes C, Soyiri I, Robinson L. Breathlessness limiting exertion in very old adults: findings from the Newcastle 85+ study. Age Ageing 2023; 52:afad155. [PMID: 37658750 PMCID: PMC10474592 DOI: 10.1093/ageing/afad155] [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: 01/30/2023] [Revised: 06/09/2023] [Indexed: 09/05/2023] Open
Abstract
INTRODUCTION Long-term breathlessness is more common with age. However, in the oldest old (>85 years), little is known about the prevalence, or impact of breathlessness. We estimated breathlessness limiting exertion prevalence and explored (i) associated characteristics; and (ii) whether breathlessness limiting exertion explains clinical and social/functional outcomes. METHODS Health and socio-demographic characteristics were extracted from the Newcastle 85+ Study cohort. Phase 1 (baseline) and follow-up data (18 months, Phase 2; 36 months, Phase 3; 60 months, Phase 4 after baseline) were examined using descriptive statistics and cross-sectional regression models. RESULTS Eight hundred seventeen participants provided baseline breathlessness data (38.2% men; mean 84.5 years; SD 0.4). The proportions with any limitation of exertion, or severe limitation by breathlessness were 23% (95% confidence intervals (CIs) 20-25%) and 9% (95%CIs 7-11%) at baseline; 20% (16-25%) and 5% (3-8%) at Phase 4. Having more co-morbidities (odds ratio (OR) 1.34, 1.18-1.54; P < 0.001), or self-reported respiratory (OR 1.88, 1.25-2.82; P = 0.003) or cardiovascular disease (OR 2.38, 1.58-3.58; P < 0.001) were associated with breathlessness limiting exertion. Breathlessness severely limiting exertion was associated with poorer self-rated health (OR 0.50, 029-0.86; P = 0.012), depression (beta-coefficient 0.11, P = 0.001), increased primary care contacts (beta-co-efficient 0.13, P = 0.001) and number of nights in hospital (OR 1.81; 1.02-3.20; P = 0.042). CONCLUSIONS Breathlessness limiting exertion appears to become less prevalent over time due to death or withdrawal of participants with cardio-respiratory illness. Breathlessness severely limiting exertion had a wide range of service utilisation and wellbeing impacts.
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Affiliation(s)
- Miriam J Johnson
- Wolfson Palliative Care Research Centre, Hull York Medical School, University of Hull, Hull, UK
| | - Lukas Pitel
- Hull Health Trials Unit, Hull York Medical School, University of Hull, Hull, UK
| | - David C Currow
- Department of Medicine and Health, University of Wollongong, Wollongong, NSW, Australia
| | - Cynthia Forbes
- Wolfson Palliative Care Research Centre, Hull York Medical School, University of Hull, Hull, UK
| | | | - Louise Robinson
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
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Sethi DK, Rhodes J, Ferris R, Banka R, Clarke A, Mishra EK. Breathlessness Predicts Mortality in Adults: A Systematic Review and Meta-Analysis. Cureus 2023; 15:e39192. [PMID: 37332470 PMCID: PMC10276653 DOI: 10.7759/cureus.39192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/18/2023] [Indexed: 06/20/2023] Open
Abstract
Breathlessness is a commonly encountered symptom, and although its relationship with mortality is well established for many conditions, less clear is this relationship in healthy adults. This systematic review and meta-analysis examines whether breathlessness is associated with mortality in a general population. This is important in understanding the impact of this common symptom on a patient's prognosis. This review was registered with PROSPERO (CRD42023394104). Medline, EMBASE, CINAHL and EMCARE were searched for the terms 'breathlessness' and 'survival' or 'mortality' on January 24, 2023. Longitudinal studies of >1,000 healthy adults comparing mortality between breathless and non-breathless controls were eligible for inclusion. If an estimate of effect size was provided, studies were included in the meta-analysis. Eligible studies underwent critical appraisal, data extraction and risk of bias assessment. A pooled effect size was estimated for the relationship between the presence of breathlessness and mortality and levels of severity of breathlessness and mortality. Of 1,993 studies identified, 21 were eligible for inclusion in the systematic review and 19 for the meta-analysis. Studies were of good quality with a low risk of bias, and the majority controlled for important confounders. Most studies identified a significant relationship between the presence of breathlessness and increased mortality. A pooled effect size was estimated, with the presence of breathlessness increasing the risk of mortality by 43% (risk ratio (RR): 1.43, 95% confidence interval (CI): 1.28-1.61). As breathlessness severity increased from mild to severe, mortality increased by 30% (RR: 1.30, 95% CI: 1.21-1.38) and 103%, respectively (RR: 2.03, 95% CI: 1.75-2.35). The same trend was seen when breathlessness was measured using the modified Medical Research Council (mMRC) Dyspnoea Scale: mMRC grade 1 conferred a 26% increased mortality risk (RR: 1.26, 95% CI: 1.16-1.37) compared with 155% for grade 4 (RR: 2.55, 95% CI: 1.86-3.50). We conclude that mortality is associated with the presence of breathlessness and its severity. The mechanism underlying this is unclear and may reflect the ubiquity of breathlessness as a symptom of many diseases.
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Affiliation(s)
- Dheeraj K Sethi
- Norwich Medical School, University of East Anglia, Norwich, GBR
- Respiratory Medicine, Norfolk and Norwich University Hospital, Norwich, GBR
| | - James Rhodes
- Norwich Medical School, University of East Anglia, Norwich, GBR
| | - Rebecca Ferris
- Respiratory Medicine, Norfolk and Norwich University Hospital, Norwich, GBR
| | - Radhika Banka
- Respiratory Medicine, P. D. Hinduja National Hospital & Medical Research Centre, Mumbai, IND
| | - Allan Clarke
- Norwich Medical School, University of East Anglia, Norwich, GBR
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Ruan Z, Li D, Cheng X, Jin M, liu Y, Qiu Z, Chen X. The association between sleep duration, respiratory symptoms, asthma, and COPD in adults. Front Med (Lausanne) 2023; 10:1108663. [PMID: 37138746 PMCID: PMC10150117 DOI: 10.3389/fmed.2023.1108663] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 03/27/2023] [Indexed: 05/05/2023] Open
Abstract
Introduction The association between sleep duration and cough, wheezing, and dyspnea was unclear. This research aimed to test this relationship. Methods Research data were obtained from people who participated in the National Health and Nutrition Examination Survey (NHANES) from 2005 to 2012. We used weighted logistic regression analysis and fitted curves to explore the association between sleep and respiratory symptoms. In addition, we investigated the association between sleep duration, chronic obstructive pulmonary disease (COPD), and asthma. The stratified analysis is used to analyze inflection points and specific populations. Results The 14,742 subjects are weighted to reflect the 45,678,491 population across the United States. Weighted logistic regression and fitted curves show a U-shaped relationship between sleep duration and cough and dyspnea. This U-shaped relationship remained in people without COPD and asthma. The stratified analysis confirmed that sleep duration before 7.5 h was negatively associated with cough (HR 0.80, 95% CI 0.73-0.87) and dyspnea (HR 0.82, 95% CI 0.77-0.88). In contrast, it was positively associated with cough and (HR 1.30, 95% CI 1.14-1.48) dyspnea (HR 1.12, 95% CI 1.00-1.26) when sleep duration was >7.5 h. In addition, short sleep duration is associated with wheezing, asthma, and COPD. Conclusion Both long and short sleep duration are associated with cough and dyspnea. And short sleep duration is also an independent risk factor for wheezing, asthma, and COPD. This finding provides new insights into the management of respiratory symptoms and diseases.
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Affiliation(s)
- Zhishen Ruan
- The First Clinical College, Shandong Chinese Medical University, Jinan, China
| | - Dan Li
- The First Clinical College, Shandong Chinese Medical University, Jinan, China
| | - Xiaomeng Cheng
- College of Traditional Chinese Medicine, Shandong Chinese Medical University, Jinan, China
| | - Minyan Jin
- The First Clinical College, Shandong Chinese Medical University, Jinan, China
| | - Ying liu
- College of Traditional Chinese Medicine, Shandong Chinese Medical University, Jinan, China
| | - Zhanjun Qiu
- The First Clinical College, Shandong Chinese Medical University, Jinan, China
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
- *Correspondence: Zhanjun Qiu,
| | - Xianhai Chen
- The First Clinical College, Shandong Chinese Medical University, Jinan, China
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
- Xianhai Chen,
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Miravitlles M, Soler-Cataluña JJ, Soriano JB, García-Río F, de Lucas P, Alfageme I, Casanova C, Rodríguez González-Moro JM, Sánchez G, Ancochea J, Cosío BG. Respiratory symptoms and their determinants in the general Spanish population: changes over 20 years. ERJ Open Res 2022; 8:00067-2022. [PMID: 36382234 PMCID: PMC9661281 DOI: 10.1183/23120541.00067-2022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 04/01/2022] [Indexed: 11/16/2022] Open
Abstract
Background Few large epidemiological studies have analysed the prevalence of respiratory symptoms and their determinants in the general adult population. We investigated the prevalence and determinants of respiratory symptoms and compared their prevalence with that of two previous studies conducted in 1999 and 2009. Method EPISCAN II was a multicentre, cross-sectional, population-based epidemiological study in individuals older than 40 years. Results A total of 9092 individuals were included. Up to 47.5% reported at least one respiratory symptom, being more frequent in women than in men (49.4% versus 45.5%, p=0.0002) and with wheezing being the most frequent (33.7%) followed by dyspnoea (26.8%). The presence of any symptom was associated with female sex, higher body mass index (BMI), lower forced expiratory volume in 1 s (FEV1 % pred), reduced physical activity, a higher Charlson index and the presence of anxiety and depression. Smoking was also significantly associated with having at least one respiratory symptom in a dose–response fashion (OR: 1.415, 1.916, 2.192 and 2.987 for 0–10, 10–20, 20–30 and >30 pack-years, respectively, all p<0.0001). The prevalence of symptoms remained quite similar over the last 20 years (wheezing 40%, 36% and 33.7% and dyspnoea 10.4%, 9.9% and 13.1% in 1999, 2009 and 2019, respectively). Conclusions Approximately half of the adult Spanish population have respiratory symptoms and this prevalence has remained quite stable over the last 20 years. Smoking remains the main factor associated with respiratory symptoms, but female sex, comorbidities, high BMI and low FEV1 and low physical activity are also significantly associated with respiratory symptoms. Approximately half of the adult Spanish population has some respiratory symptoms and this prevalence has remained quite stable over the last 20 yearshttps://bit.ly/37uGRT7
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Undiagnosed Chronic Obstructive Pulmonary Disease is Highly Prevalent in Patients Referred for Dobutamine Stress Echocardiography with Shortness of Breath. Lung 2022; 200:41-48. [PMID: 35166905 DOI: 10.1007/s00408-022-00512-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 01/06/2022] [Indexed: 10/19/2022]
Abstract
PURPOSE Shortness of breath (SOB) is a common symptom referral for dobutamine stress echocardiography (DSE). Patients with SOB and a normal DSE have worse long-term outcome than the general population. This suggests multiple aetiologies are involved. The purpose of this study was to assess the prevalence and clinical significance of undiagnosed COPD amongst patients referred for a DSE with SOB. METHODS We prospectively studied 114 patients referred for DSE with SOB without prior evidence of lung disease (mean age 64.9 ± 18.5 years, 60 male). Respiratory function testing using spirometry was performed on all patients on the day of their DSE. The study end-points were cardiac events and total mortality. RESULTS Respiratory function testing and DSE was performed in all patients and COPD was highly prevalent (n = 93). Multivariate Cox regression analysis was used to estimate the effect of dyspnoea on non-fatal cardiac events (NFCE) and all-cause mortality. Over a mean follow-up of 4.5 ± 2.6 years, the composite end-point of NFCE and all-cause mortality occurred in 62.7% and 16.7% patients, respectively. COPD (HR 1.27; 95% CI 1.17-1.93), previous myocardial infarction (HR 1.84; 95% CI 1.06-3.2), myocardial ischaemia (HR 2.56; 95% CI 1.48-4.43), peak wall motion score index (HR 4.66; 95% CI 2.26-9.6), and mitral E/E' (HR 1.21; 95% CI 1.1-1.33) were significantly associated with a NFCE. Myocardial ischaemia (HR 4.43; 95% CI 1.24-15.81) was the only independent predictor of all-cause mortality. CONCLUSION Undiagnosed COPD is highly prevalent and independently associated with worse outcome amongst patients with SOB referred for DSE. Symptom presentation is therefore an important consideration when interpreting DSE results.
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Hudler A, Holguin F, Althoff M, Fuhlbrigge A, Sharma S. Pathophysiology and Clinical evaluation of the patient with unexplained persistent dyspnea. Expert Rev Respir Med 2022; 16:511-518. [PMID: 35034521 PMCID: PMC9276544 DOI: 10.1080/17476348.2022.2030222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Dyspnea is a complex symptom, which largely results from an imbalance between an afferent sensory stimulus and the corresponding efferent respiratory neuromuscular response. In addition, it is heavily influenced by the patient's prior experiences and sociocultural factors. AREAS COVERED The diagnostic approach to these patients requires a graded, systematic, and often multidisciplinary approach to determine what is the underlying pathophysiologic process. Utilization of objective data obtained through lab testing, imaging, and advanced testing, such as cardiopulmonary exercise testing, is often required to help identify underlying pathology contributing to a patient's symptoms. This article will review dyspnea's underlying pathophysiological mechanisms and standardized approaches to diagnoses. In the expert opinion section, we will discuss our own clinical approach to evaluating patients with persistent dyspnea. EXPERT OPINION Unexplained dyspnea is a challenging diagnosis that occurs in patients with and without underlying cardiopulmonary diseases. It requires a systematic approach, which initially uses clinical evaluation in addition to standard imaging and clinical biomarkers. When diagnoses are not made during the initial evaluation, subsequent tests can include cardiopulmonary exercise test and methacholine challenge. To be certain of the correct diagnosis, It is imperative that the clinician determines dyspnea's response to a particular therapeutic intervention.
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Affiliation(s)
- Andi Hudler
- Division of Pulmonary Sciences and Critical Care, University of Colorado
| | - Fernando Holguin
- Division of Pulmonary Sciences and Critical Care, University of Colorado
| | - Meghan Althoff
- Division of Pulmonary Sciences and Critical Care, University of Colorado
| | - Anne Fuhlbrigge
- Division of Pulmonary Sciences and Critical Care, University of Colorado
| | - Sunita Sharma
- Division of Pulmonary Sciences and Critical Care, University of Colorado
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Sandberg J, Olsson M, Ekström M. Underlying conditions contributing to breathlessness in the population. Curr Opin Support Palliat Care 2021; 15:219-225. [PMID: 34610625 PMCID: PMC8631149 DOI: 10.1097/spc.0000000000000568] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
PURPOSE OF REVIEW Assessment of underlying conditions that contribute to breathlessness is fundamental for symptom management. This review aims to summarize the knowledge from the past two years on the most common underlying conditions among individuals with breathlessness in the general population and to identify research gaps. RECENT FINDINGS Nine studies from the last two years were included in the review; two studies systematically assessed underlying conditions among breathless individuals in the general population. The modified Medical Research Council (mMRC) scale was used in eight of nine studies. Respiratory diseases were the main underlying condition (40-57%), of which asthma was the most common (approx. 25%), and chronic obstructive pulmonary disease was particularly strongly associated with breathlessness. Other conditions prevalent among breathless individuals included heart diseases, anxiety, depression, and obesity, and several conditions often co-existed. SUMMARY Breathlessness in the general population is common and associated with several underlying conditions. Respiratory disease is the most commonly reported underlying condition. Refined methods such as machine learning could be useful to study the complex interplay between multiple underlying causes of breathlessness and impact on outcomes such as quality of life and survival.
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Affiliation(s)
- Jacob Sandberg
- Department of Clinical Sciences, Division of Respiratory Medicine & Allergology, Lund University, Lund, Sweden
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Doe G, Clanchy J, Wathall S, Chantrell S, Edwards S, Baxter N, Jackson D, Armstrong N, Steiner M, Evans RA. Feasibility study of a multicentre cluster randomised control trial to investigate the clinical and cost-effectiveness of a structured diagnostic pathway in primary care for chronic breathlessness: protocol paper. BMJ Open 2021; 11:e057362. [PMID: 34815293 PMCID: PMC8611440 DOI: 10.1136/bmjopen-2021-057362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
INTRODUCTION Chronic breathlessness is a common and debilitating symptom, associated with high healthcare use and reduced quality of life. Challenges and delays in diagnosis for people with chronic breathlessness frequently occur, leading to delayed access to therapies. The overarching hypothesis is a symptom-based approach to diagnosis in primary care would lead to earlier diagnosis, and therefore earlier treatment and improved longer-term outcomes including health-related quality of life. This study aims to establish the feasibility of a multicentre cluster randomised controlled trial to assess the clinical and cost-effectiveness of a structured diagnostic pathway for breathlessness in primary care. METHODS AND ANALYSIS Ten general practitioner (GP) practices across Leicester and Leicestershire will be cluster randomised to either a structured diagnostic pathway (intervention) or usual care. The structured diagnostic pathway includes a panel of investigations within 1 month. Usual care will proceed with patient care as per normal practice. Eligibility criteria include patients presenting with chronic breathlessness for the first time, who are over 40 years old and without a pre-existing diagnosis for their symptoms. An electronic template triggered at the point of consultation with the GP will aid opportunistic recruitment in primary care. The primary outcome for this feasibility study is recruitment rate. Secondary outcome measures, including time to diagnosis, will be collected to help inform outcomes for the future trial and to assess the impact of an earlier diagnosis. These will include symptoms, health-related quality of life, exercise capacity, measures of frailty, physical activity and healthcare utilisation. The study will include nested qualitative interviews with patients and healthcare staff to understand the feasibility outcomes, explore what is 'usual care' and the study experience. ETHICS AND DISSEMINATION The Research Ethics Committee Nottingham 1 has provided ethical approval for this research study (REC Reference: 19/EM/0201). Results from the study will be disseminated by presentations at relevant meetings and conferences including British Thoracic Society and Primary Care Respiratory Society, as well as by peer-reviewed publications and through patient presentations and newsletters to patients, where available. TRIAL REGISTRATION NUMBER ISRCTN14483247.
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Affiliation(s)
- Gillian Doe
- Respiratory Sciences, University of Leicester, Leicester, UK
| | - Jill Clanchy
- Leicester Clinical Trials Unit, University of Leicester, Leicester, UK
| | - Simon Wathall
- Institute of Primary Care and Health Sciences, Keele University, Staffordshire, UK
| | - Stacey Chantrell
- NIHR Leicester Biomedical Research Centre - Respiratory, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Sarah Edwards
- NIHR Leicester Biomedical Research Centre - Respiratory, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Noel Baxter
- International Primary Care Respiratory Group, London, UK
| | | | | | - Michael Steiner
- Respiratory Sciences, University of Leicester, Leicester, UK
- NIHR Leicester Biomedical Research Centre - Respiratory, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Rachael A Evans
- Respiratory Sciences, University of Leicester, Leicester, UK
- NIHR Leicester Biomedical Research Centre - Respiratory, University Hospitals of Leicester NHS Trust, Leicester, UK
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Reychler G, Beaumont M, Latiers AC, Pieters T, Fremault A. Dyspnea could be accurately assessed by a caregiver in hospitalized patients with respiratory diseases: Interrater reliability and agreement study. Braz J Phys Ther 2021; 25:735-740. [PMID: 34119444 PMCID: PMC8721053 DOI: 10.1016/j.bjpt.2021.04.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 09/15/2020] [Accepted: 04/21/2021] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND The perception of dyspnea is a subjective feeling typically self-assessed by the patient. However, the assessment by a caregiver is sometimes required. OBJECTIVES The primary aim was to compare patient self-assessment and caregiver assessment of dyspnea (interrater reliability) using the modified Borg and visual analog scale (VAS) in hospitalized patients. The secondary aim was to compare dyspnea assessment between the two scales for patients and caregiver (inter-instrument reliability). METHODS Self-assessment of dyspnea intensity of hospitalized patients with respiratory diseases was compared with caregiver's assessment. Dyspnea intensity was measured using two scales, the modified Borg scale (0-10 scale) and the 10 cm VAS. Mean difference and 95% confidence interval (CI) between assessors (i.e. patient versus caregiver) were calculated for each scale. Inter- and intra-rater reliability was calculated using intraclass correlation coefficients (ICCs). RESULTS A total of 254 patients were recruited. The mean differences between patient and caregiver ratings were 0.31 (95% CI: 0.09, 0.53) for the modified Borg scale and 0.36 (95% CI: 0.06, 0.65) for the VAS scale. Interrater reliability was good for both scales with ICC of 0.79 (95% CI: 0.73, 0.84) for VAS and 0.82 (95% CI: 0.77, 0.86) for the modified Borg scale. The mean differences in scores between scales were 0.93 (95% CI 0.69, 1.17) for patients' ratings and 0.88 (95% CI 0.72, 1.04) for caregiver's rating. The inter-instrument reliability was moderate to good and similar for both assessors. CONCLUSION Dyspnea can be accurately estimated by caregivers when patients with lung diseases cannot self-report. Scores on the VAS to rate dyspnea were higher than the scores on the Borg scale.
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Affiliation(s)
- Gregory Reychler
- Institut de Recherche Expérimentale et Clinique (IREC), Pôle de Pneumologie, ORL and Dermatologie, Université Catholique de Louvain, Brussels, Belgium; Service de Pneumologie, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10, Brussels 1200, Belgium; Secteur de Kinésithérapie et Ergothérapie, Cliniques Universitaires Saint-Luc, Brussels, Belgium.
| | - Marc Beaumont
- Service de Réhabilitation Respiratoire, Centre Hospitalier des Pays de Morlaix, Morlaix, France; EA3878 (GETBO), CHU Brest, Brest, France
| | - Anne-Claire Latiers
- Secteur de Kinésithérapie et Ergothérapie, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Thierry Pieters
- Institut de Recherche Expérimentale et Clinique (IREC), Pôle de Pneumologie, ORL and Dermatologie, Université Catholique de Louvain, Brussels, Belgium; Service de Pneumologie, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10, Brussels 1200, Belgium
| | - Antoine Fremault
- Service de Pneumologie, Grand Hôpital de Charleroi, Charleroi, Belgium
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11
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Olofson J, Bake B, Bergman B, Vanfleteren LEGW, Svärdsudd K. Prediction of COPD by the single-breath nitrogen test and various respiratory symptoms. ERJ Open Res 2021; 7:00383-2021. [PMID: 34589539 PMCID: PMC8473809 DOI: 10.1183/23120541.00383-2021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 06/27/2021] [Indexed: 11/23/2022] Open
Abstract
Early identification of subjects running an increased risk of contracting COPD enables focus on individual preventive measures. The slope of the alveolar plateau of the single-breath nitrogen washout test (N2-slope) is a sensitive measure of small-airway dysfunction. However, its role remains unexplored in predicting hospital admission or death related to COPD, i.e. incident COPD events, in relation to the presence of various respiratory symptoms. A random population sample of 625 men, aged 50 (n=218) or 60 years (n=407), was followed for 38 years for incident COPD events. At baseline, a questionnaire on respiratory symptoms and smoking habits was collected, spirometry and the single-breath nitrogen test were performed, and the N2-slope was determined. Proportional hazard regression (Cox regression) analysis was used for the prediction model. The N2-slope improved the prediction of COPD events significantly beyond that of respiratory symptoms weighted all together and other covariates (hazard ratio 1.63, 95% CI 1.20–2.22; p<0.005), a prediction applicable to subjects without (p=0.001) and with (p<0.05) airway obstruction. Dyspnoea and wheezing were the most predictive symptoms. The combination of the N2-slope and number of respiratory symptoms notably resulted in an effective prediction of incident COPD events even in nonobstructive subjects, as evidenced by a predicted incidence of ∼70% and ∼90% for a very steep N2-slope combined with many respiratory symptoms in subject without and with airway obstruction, respectively. The alveolar N2-slope should be considered in the critical need for further research on early diagnosis of COPD. The N2 slope of the single-breath nitrogen test predicts incident COPD events as well as or better than respiratory symptoms among subjects without and with airway obstruction. Combining N2 slope and symptoms results in effective prediction.https://bit.ly/3dYJdu1
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Affiliation(s)
- Jan Olofson
- Unit of Respiratory Medicine and Allergology, Dept of Internal Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Björn Bake
- Unit of Respiratory Medicine and Allergology, Dept of Internal Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Bengt Bergman
- Unit of Respiratory Medicine and Allergology, Dept of Internal Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Lowie E G W Vanfleteren
- COPD Center, Institute of Medicine, Sahlgrenska University Hospital, University of Gothenburg, Gothenburg, Sweden
| | - Kurt Svärdsudd
- Dept of Public Health and Caring Sciences, Family Medicine and Preventive Medicine Section, Uppsala University, Uppsala, Sweden
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12
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Sandberg J, Ekström M, Börjesson M, Bergström G, Rosengren A, Angerås O, Toren K. Underlying contributing conditions to breathlessness among middle-aged individuals in the general population: a cross-sectional study. BMJ Open Respir Res 2021; 7:7/1/e000643. [PMID: 32978243 PMCID: PMC7520902 DOI: 10.1136/bmjresp-2020-000643] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 09/02/2020] [Accepted: 09/02/2020] [Indexed: 01/27/2023] Open
Abstract
Introduction Breathlessness is common in the general population and associated with poorer health. Prevalence, frequencies and overlap of underlying contributing conditions among individuals reporting breathlessness in the general population is unclear. The aim was to evaluate which conditions that were prevalent, overlapping and associated with breathlessness in a middle-aged general population. Method Cross-sectional analysis of individuals aged 50–65 years in the Swedish CArdioPulmonary bioImage Study pilot. Data from questionnaire, spirometry testing and fitness testing were used to identify underlying contributing conditions among participants reporting breathlessness (a modified Medical Research Scale (mMRC) score ≥1). Multivariate logistic regression was used to identify independent associations with breathlessness. Results 1097 participants were included; mean age 57.5 years, 50% women and 9.8% (n=108) reported breathlessness (mMRC ≥1). Main underlying contributing conditions were respiratory disease (57%), anxiety or depression (52%), obesity (43%) and heart disease or chest pain (35%). At least one contributing condition was found in 99.6% of all participants reporting breathlessness, while two or more conditions were present in 66%. Conclusion In a middle-aged general population, the main underlying contributing conditions to breathlessness were respiratory disease, anxiety or depression, obesity and heart disease or chest pain with a high level of overlap.
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Affiliation(s)
- Jacob Sandberg
- Faculty of Medicine, Department of Clinical Sciences Lund, Respiratory Medicine and Allergology, Lund University, Lund, Sweden
| | - Magnus Ekström
- Faculty of Medicine, Department of Clinical Sciences Lund, Respiratory Medicine and Allergology, Lund University, Lund, Sweden
| | - Mats Börjesson
- Department of Molecular and Clinical Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Sahlgrenska University Hospital/Östra, Gothenburg, Sweden.,Center for Health and Performance, University of Gothenburg, Gothenburg, Sweden
| | - Göran Bergström
- Department of Molecular and Clinical Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Clinical Physiology, Region Västra Götaland, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Annika Rosengren
- Department of Molecular and Clinical Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Sahlgrenska University Hospital/Östra, Gothenburg, Sweden
| | - Oskar Angerås
- Department of Molecular and Clinical Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Cardiology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Kjell Toren
- Department of Occupational and Environmental Medicine, School of Public Health and Community Medicine, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
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13
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Bermúdez Barón N, Lindberg A, Stridsman C, Andersson M, Hedman L, Vikjord SA, Kankaanranta H, Lundbäck B, Rönmark E, Backman H. Among respiratory symptoms, wheeze associates most strongly with impaired lung function in adults with asthma: a long-term prospective cohort study. BMJ Open Respir Res 2021; 8:e000981. [PMID: 34281917 PMCID: PMC8291305 DOI: 10.1136/bmjresp-2021-000981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 06/19/2021] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Asthma is a common disease and a major public health concern. Respiratory symptoms are related to its prognosis, which in turn associates with lung function. Still this association on a long-term basis is not entirely understood. AIM To study the association of the type and number of respiratory symptoms with FEV1 and FEV1 decline in women and men with asthma. METHOD A population-based cohort of adults with asthma was examined at study entry between 1986 and 2001 and at follow-up between 2012 and 2014, and n=977 had valid measurements of FEV1 on both occasions. Data regarding respiratory symptoms at study entry (recurrent wheeze, dyspnoea, longstanding cough and productive cough) were analysed in relation to FEV1 and annual decline in FEV1, both unadjusted and adjusted for other potentially associated factors by linear regression. RESULTS For both sexes recurrent wheeze and dyspnoea were associated with lower FEV1 at study entry and follow-up, while productive cough was associated with lower FEV1 only at follow-up. No associations were found between the type of symptoms and annual decline in FEV1. In adjusted analyses, the association between recurrent wheeze and lower FEV1 both at study entry and follow-up remained significant among women. Also, the association between a higher number of symptoms with lower FEV1 both at study entry and follow-up were present for both sexes and remained after adjustment. CONCLUSIONS Particularly recurrent wheeze and a higher number of respiratory symptoms may predict lower lung function also in the long run among women and men with asthma.
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Affiliation(s)
- Nicolás Bermúdez Barón
- Department of Public Health and Clinical Medicine, Section of Sustainable Health, The OLIN Unit, Umeå University, Umeå, Sweden
| | - Anne Lindberg
- Department of Public Health and Clinical Medicine, Section of Medicine, The OLIN Unit, Umeå University, Umeå, Sweden
| | - Caroline Stridsman
- Department of Public Health and Clinical Medicine, Section of Medicine, The OLIN Unit, Umeå University, Umeå, Sweden
| | - Martin Andersson
- Department of Public Health and Clinical Medicine, Section of Sustainable Health, The OLIN Unit, Umeå University, Umeå, Sweden
| | - Linnea Hedman
- Department of Public Health and Clinical Medicine, Section of Sustainable Health, The OLIN Unit, Umeå University, Umeå, Sweden
- Department of Health Sciences, Division of Nursing, Luleå University of Technology, Luleå, Sweden
| | - Sigrid Anna Vikjord
- HUNT Research Centre, Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
| | - Hannu Kankaanranta
- Department of Respiratory Medicine, Seinäjoki Central Hospital, Seinäjoki, Finland
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Bo Lundbäck
- Department of Public Health and Clinical Medicine, Section of Medicine, The OLIN Unit, Umeå University, Umeå, Sweden
- Department of Internal Medicine and Clinical Nutrition, Krefting Research Centre, University of Gothenburg Institute of Medicine, Goteborg, Sweden
| | - Eva Rönmark
- Department of Public Health and Clinical Medicine, Section of Sustainable Health, The OLIN Unit, Umeå University, Umeå, Sweden
| | - Helena Backman
- Department of Public Health and Clinical Medicine, Section of Sustainable Health, The OLIN Unit, Umeå University, Umeå, Sweden
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14
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Doe G, Chantrell S, Williams M, Steiner MC, Armstrong N, Hutchinson A, Evans RA. Breathless and awaiting diagnosis in UK lockdown for COVID-19…We're stuck. NPJ Prim Care Respir Med 2021; 31:21. [PMID: 33953200 PMCID: PMC8100135 DOI: 10.1038/s41533-021-00232-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 03/15/2021] [Indexed: 12/04/2022] Open
Abstract
During the COVID-19 pandemic, semi-structured interviews were undertaken with 20 adults awaiting a diagnosis for their chronic breathlessness. Three key themes were identified using thematic analysis: (1) de-prioritisation of diagnosis, (2) following UK 'lockdown' guidance for the general population but patients fearful they were more at risk, and (3) the impact of lockdown on coping strategies for managing breathlessness. The existing unpredictable pathway to diagnosis for those with chronic breathlessness has been further interrupted during the COVID-19 pandemic.
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Affiliation(s)
- Gillian Doe
- Department of Respiratory Science, University of Leicester, Leicester, UK
| | - Stacey Chantrell
- NIHR Biomedical Research Centre-Respiratory theme, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Marie Williams
- Allied Health and Human Performance, University of South Australia, Adelaide, Australia
| | - Michael C Steiner
- Department of Respiratory Science, University of Leicester, Leicester, UK
- NIHR Biomedical Research Centre-Respiratory theme, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Natalie Armstrong
- Department of Health Sciences, University of Leicester, Leicester, UK
| | - Ann Hutchinson
- Wolfson Palliative Care Research Centre, Hull and York Medical School, University of Hull, Hull, UK
| | - Rachael A Evans
- Department of Respiratory Science, University of Leicester, Leicester, UK.
- NIHR Biomedical Research Centre-Respiratory theme, University Hospitals of Leicester NHS Trust, Leicester, UK.
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15
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Clark VL, Gibson PG, McDonald VM. What matters to people with severe asthma? Exploring add-on asthma medication and outcomes of importance. ERJ Open Res 2021; 7:00497-2020. [PMID: 33816596 PMCID: PMC8005593 DOI: 10.1183/23120541.00497-2020] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 11/08/2020] [Indexed: 12/19/2022] Open
Abstract
There is an increasing number of new therapies for severe asthma; however, what outcomes people with severe asthma would like improved and what aspects they prioritise in new medications remain unknown. This study aimed to understand what outcomes are important to patients when prescribed new treatments and to determine the characteristics of importance to patients in their choice of asthma treatments. Participants with severe asthma (n=50) completed a cross-sectional survey that ranked 17 potential hypothetical outcomes of treatment using a seven-point Likert scale, as well as selecting their top five overall outcomes. Participants also completed hypothetical scenarios trading off medication characteristics for four hypothetical add-on asthma treatments. Participants (58% male), had a mean±sd age of 62.2±13.5 years. Their top three prioritised outcomes were: to improve overall quality of life (selected by 83% of people), reduce number and severity of asthma attacks (72.3%), and being able to participate in physical activity (59.6%) When trading off medication characteristics, the majority of patients with severe asthma chose the hypothetical medication with the best treatment efficacy (68%). However, a subgroup of patients prioritised the medication's side-effect profile and mode of delivery to select their preferred medication. People with severe asthma value improved quality of life as an important outcome of treatment. Shared decision-making discussions between clinicians and patients that centre around medication efficacy and side-effect profile can incorporate patient preferences for add-on therapy in severe asthma. Improving quality of life is an important treatment outcome. Shared decision-making discussions between clinicians and patients that centre around efficacy and side-effect profile incorporate patient preferences for add-on therapy in severe asthma.https://bit.ly/2GY1Sc4
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Affiliation(s)
- Vanessa L Clark
- National Health and Medical Research Council Centre for Research Excellence in Severe Asthma and The Priority Research Centre for Healthy Lungs, The University of Newcastle, Callaghan, NSW, Australia.,School of Nursing and Midwifery, The University of Newcastle, Callaghan, NSW, Australia
| | - Peter G Gibson
- National Health and Medical Research Council Centre for Research Excellence in Severe Asthma and The Priority Research Centre for Healthy Lungs, The University of Newcastle, Callaghan, NSW, Australia.,Dept of Respiratory and Sleep Medicine, John Hunter Hospital, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Vanessa M McDonald
- National Health and Medical Research Council Centre for Research Excellence in Severe Asthma and The Priority Research Centre for Healthy Lungs, The University of Newcastle, Callaghan, NSW, Australia.,School of Nursing and Midwifery, The University of Newcastle, Callaghan, NSW, Australia.,Dept of Respiratory and Sleep Medicine, John Hunter Hospital, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
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16
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Berton DC, Mendes NBS, Olivo-Neto P, Benedetto IG, Gazzana MB. Pulmonology approach in the investigation of chronic unexplained dyspnea. ACTA ACUST UNITED AC 2021; 47:e20200406. [PMID: 33567064 PMCID: PMC7889318 DOI: 10.36416/1806-3756/e20200406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 10/08/2020] [Indexed: 11/17/2022]
Abstract
Chronic unexplained dyspnea and exercise intolerance represent common, distressing symptoms in outpatients. Clinical history taking and physical examination are the mainstays for diagnostic evaluation. However, the cause of dyspnea may remain elusive even after comprehensive diagnostic evaluation-basic laboratory analyses; chest imaging; pulmonary function testing; and cardiac testing. At that point (and frequently before), patients are usually referred to a pulmonologist, who is expected to be the main physician to solve this conundrum. In this context, cardiopulmonary exercise testing (CPET), to assess physiological and sensory responses from rest to peak exercise, provides a unique opportunity to unmask the mechanisms of the underlying dyspnea and their interactions with a broad spectrum of disorders. However, CPET is underused in clinical practice, possibly due to operational issues (equipment costs, limited availability, and poor remuneration) and limited medical education regarding the method. To counter the latter shortcoming, we aspire to provide a pragmatic strategy for interpreting CPET results. Clustering findings of exercise response allows the characterization of patterns that permit the clinician to narrow the list of possible diagnoses rather than pinpointing a specific etiology. We present a proposal for a diagnostic workup and some illustrative cases assessed by CPET. Given that airway hyperresponsiveness and pulmonary vascular disorders, which are within the purview of pulmonology, are common causes of chronic unexplained dyspnea, we also aim to describe the role of bronchial challenge tests and the diagnostic reasoning for investigating the pulmonary circulation in this context.
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Affiliation(s)
- Danilo Cortozi Berton
- . Programa de Pós-Graduação em Ciências Pneumológicas, Universidade Federal do Rio Grande do Sul - UFRGS - Porto Alegre (RS) Brasil.,. Serviço de Pneumologia, Hospital de Clinicas de Porto Alegre - HCPA - Universidade Federal do Rio Grande do Sul - UFRGS - Porto Alegre (RS) Brasil
| | - Nathalia Branco Schweitzer Mendes
- . Programa de Pós-Graduação em Ciências Pneumológicas, Universidade Federal do Rio Grande do Sul - UFRGS - Porto Alegre (RS) Brasil.,. Serviço de Pneumologia, Hospital de Clinicas de Porto Alegre - HCPA - Universidade Federal do Rio Grande do Sul - UFRGS - Porto Alegre (RS) Brasil
| | - Pedro Olivo-Neto
- . Programa de Pós-Graduação em Ciências Pneumológicas, Universidade Federal do Rio Grande do Sul - UFRGS - Porto Alegre (RS) Brasil.,. Serviço de Pneumologia, Hospital de Clinicas de Porto Alegre - HCPA - Universidade Federal do Rio Grande do Sul - UFRGS - Porto Alegre (RS) Brasil
| | - Igor Gorski Benedetto
- . Programa de Pós-Graduação em Ciências Pneumológicas, Universidade Federal do Rio Grande do Sul - UFRGS - Porto Alegre (RS) Brasil.,. Serviço de Pneumologia, Hospital de Clinicas de Porto Alegre - HCPA - Universidade Federal do Rio Grande do Sul - UFRGS - Porto Alegre (RS) Brasil.,. Serviço de Pneumologia e Cirurgia Torácica, Hospital Moinhos de Vento, Porto Alegre (RS) Brasil
| | - Marcelo Basso Gazzana
- . Programa de Pós-Graduação em Ciências Pneumológicas, Universidade Federal do Rio Grande do Sul - UFRGS - Porto Alegre (RS) Brasil.,. Serviço de Pneumologia, Hospital de Clinicas de Porto Alegre - HCPA - Universidade Federal do Rio Grande do Sul - UFRGS - Porto Alegre (RS) Brasil.,. Serviço de Pneumologia e Cirurgia Torácica, Hospital Moinhos de Vento, Porto Alegre (RS) Brasil
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17
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Baikampady SV. Vata dynamics with special reference to cardiac disorders - A cross-disciplinary approach. J Ayurveda Integr Med 2020; 11:432-439. [PMID: 33218848 PMCID: PMC7772479 DOI: 10.1016/j.jaim.2020.10.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 10/08/2020] [Accepted: 10/11/2020] [Indexed: 11/25/2022] Open
Abstract
Vata is one of the fundamental patho-physiological entities with unique and dynamic properties. All actions inside the body, whether voluntary or involuntary, are governed by Vayu. Actions involved during natural physiological calls or urges, are involuntary, but partially under voluntary control. Classical texts from Ayurveda state that such natural urges (NU) should be strictly attended without disturbing their natural flow. Some urges can be intentionally or inadvertently initiated (Udiran) or suppressed (Dhaaran), redirecting the normal flow of Vayu, leaving scopes for severe morbidities in the heart causing cardiovascular disorders (CVD). Since Vata has unique attribute of Vega (locomotion) that moves in a specific direction, its intensities can be quantified with the help of modern techniques. Few studies have objectively evaluated the intensities of NU like belching, sneezing, expulsion of flatus, etc. during normalcy, which may help us to determine their altered activity during morbidity. In spite of such studies, their relevance to CVD is inadequately explored. Hence, this article addresses details of such NU that lead to CVD alone, from classical texts of Ayurveda, conventional medicines and technology that quantify their intensities. Citing research articles from various journals using keywords were done to understand their mechanism along with their intensities. It was found that objective estimation of few NU was performed extensively whereas some had limitations. Theories from the classical texts confirm that physiological NU, if allowed to flow freely without any impedance, assures good health. It would certainly benefit the mankind if their pathologic state is timely detected so as to prevent disease progression in CVD.
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Abstract
PURPOSE OF REVIEW Exertional breathlessness is common and pervasive across various chronic disease populations. To accurately assess response to intervention and optimize clinical (symptom) management, detailed assessment of exertional breathlessness is imperative. This review provides an update on current approaches to assess exertional breathlessness and presents the need for individualized assessment of breathlessness standardized for the level of exertion. RECENT FINDINGS Breathlessness assessment tools commonly invite people to recall their breathlessness while at rest with reference to activities of daily living. To directly quantify breathlessness, however, requires assessment of the dimensions of breathlessness (e.g., sensory intensity, quality, and unpleasantness) in response to a standardized exercise stimulus. Different exercise stimuli (e.g., self-paced, incremental, and constant work rate exercise tests) have been used to elicit a breathlessness response. Self-paced (e.g., 6-min walk test) and incremental exercise tests assess exercise tolerance or endurance, and are not recommended for assessment of exertional breathlessness. Constant work rate tests, however, including recently validated 3-min constant-rate stair stepping and walking tests, standardize the exercise stimulus to enable the breathlessness response to be directly quantified and monitored over time. SUMMARY To adequately guide symptom management and assess intervention efficacy, clinicians and researchers should assess breathlessness with multidimensional assessment tools in response to a standardized and individualized exercise stimulus.
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19
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Respiratory symptoms and mortality in four general population cohorts over 45 years. Respir Med 2020; 170:106060. [PMID: 32843179 DOI: 10.1016/j.rmed.2020.106060] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 06/02/2020] [Accepted: 06/03/2020] [Indexed: 11/20/2022]
Abstract
OBJECTIVE This study assessed the association between respiratory symptoms and mortality in four cohorts of the general population in Norway aged 15-75 years and in selected subgroups in the pooled sample. METHODS The study comprised 158,702 persons, who were drawn randomly from the Norwegian population register. All subjects received a standardized, self-administered questionnaire on 11 respiratory symptoms between 1972 and 1998, with follow-up of death until December 31, 2017. Analyses were performed on 114,380 respondents. RESULTS The hazard of death was closely associated with sex, age, and education. The hazard ratios (HR) for death and the 95% confidence intervals (CI) by risk factors were similar in the four cohorts. After adjustment for demographic and environmental, modifiable factors, the HR for death was 1.90 (95% CI 1.80-2.00) for breathlessness score 3, 1.28 (1.21-1.37) for cough/phlegm score 5 and 1.09 (1.05-1.14) for attack of breathlessness/wheeze score 2 compared to the referent (no symptom), respectively. The cough/phlegm score was associated with death in current smokers but not in never smokers or ex-smokers. Breathlessness score was associated with death in men and women. CONCLUSION Among persons aged 45-75 years, respiratory symptoms were significant predictors of all cause mortality. Education and smoking habits influenced only the associations between coughing and mortality. The associations were independent of study sites.
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20
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Petrie K, Abramson MJ, Cross AJ, George J. Predicting life expectancy of older people using respiratory symptoms and smoking status: Data from the Australian Longitudinal Study of Ageing. Respirology 2019; 25:267-274. [DOI: 10.1111/resp.13603] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 03/07/2019] [Accepted: 04/30/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Kate Petrie
- Centre for Medicine Use and Safety, Faculty of Pharmacy and Pharmaceutical Sciences Monash University Melbourne VIC Australia
| | - Michael J. Abramson
- School of Public Health and Preventive Medicine Monash University Melbourne VIC Australia
| | - Amanda J. Cross
- Centre for Medicine Use and Safety, Faculty of Pharmacy and Pharmaceutical Sciences Monash University Melbourne VIC Australia
| | - Johnson George
- Centre for Medicine Use and Safety, Faculty of Pharmacy and Pharmaceutical Sciences Monash University Melbourne VIC Australia
- School of Public Health and Preventive Medicine Monash University Melbourne VIC Australia
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21
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Maddocks M, Brighton LJ, Farquhar M, Booth S, Miller S, Klass L, Tunnard I, Yi D, Gao W, Bajwah S, Man WDC, Higginson IJ. Holistic services for people with advanced disease and chronic or refractory breathlessness: a mixed-methods evidence synthesis. HEALTH SERVICES AND DELIVERY RESEARCH 2019. [DOI: 10.3310/hsdr07220] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Background
Breathlessness is a common and distressing symptom of many advanced diseases, affecting around 2 million people in the UK. Breathlessness increases with disease progression and often becomes chronic or refractory. Breathlessness-triggered services that integrate holistic assessment and specialist palliative care input as part of a multiprofessional approach have been developed for this group, offering tailored interventions to support self-management and reduce distress.
Objectives
The aim was to synthesise evidence on holistic breathlessness services for people with advanced disease and chronic or refractory breathlessness. The objectives were to describe the structure, organisation and delivery of services, determine clinical effectiveness, cost-effectiveness and acceptability, identify predictors of treatment response, and elicit stakeholders’ evidence-based priorities for clinical practice, policy and research.
Design
The mixed-methods evidence synthesis comprised three components: (1) a systematic review to determine the clinical effectiveness, cost-effectiveness and acceptability of holistic breathlessness services; (2) a secondary analysis of pooled individual data from three trials to determine predictors of clinical response; and (3) a transparent expert consultation (TEC), comprising a stakeholder workshop and an online consensus survey, to identify stakeholders’ priorities.
Results
Thirty-seven papers reporting on 18 holistic breathlessness services were included in the systematic review. Most studies enrolled people with thoracic cancer, were delivered over 4–6 weeks, and included breathing training, relaxation techniques and psychological support. Meta-analysis demonstrated significant reductions in the Numeric Rating Scale (NRS) distress due to breathlessness, significant reductions in the Hospital Anxiety and Depressions Scale (HADS) depression scores, and non-significant reductions in the Chronic Respiratory Disease Questionnaire (CRQ) mastery and HADS anxiety, favouring the intervention. Recipients valued education, self-management interventions, and expertise of the staff in breathlessness and person-centred care. Evidence for cost-effectiveness was limited and inconclusive. The responder analysis (n = 259) revealed baseline CRQ mastery and NRS distress to be strong predictors of the response to breathlessness services assessed by these same measures, and no significant influence from baseline breathlessness intensity, patient diagnosis, lung function, health status, anxiety or depression. The TEC elicited 34 priorities from stakeholders. Seven priorities received high agreement and consensus, reflecting stakeholders’ (n = 74) views that services should be person-centred and multiprofessional, share their breathlessness management skills with others, and recognise the roles and support needs of informal carers.
Limitations
The evidence synthesis draws predominantly from UK services and may not be generalisable to other settings. Some meta-analyses were restricted by reporting biases and statistical heterogeneity.
Conclusions
Despite heterogeneity in composition and delivery, holistic breathlessness services are highly valued by recipients and can lead to significant improvements in the distress caused by breathlessness and depression. Outcomes of improved mastery and reduced distress caused by breathlessness are not influenced by patient diagnosis, lung function or health status. Stakeholders highlighted the need for improved access to person-centred, multiprofessional breathlessness services and support for informal carers.
Future work
Our research suggests that key therapeutic components of holistic breathlessness services be considered in clinical practice and models of delivery and educational strategies to address stakeholders’ priorities tested.
Study registration
This study is registered as PROSPERO CRD42017057508.
Funding
The National Institute for Health Research (NIHR) Health Services and Delivery programme. Matthew Maddocks, Wei Gao and Irene J Higginson are supported by the NIHR Collaboration for Leadership in Applied Health Research and Care (CLAHRC) South London; Matthew Maddocks is supported by a NIHR Career Development Fellowship (CDF-2017-009), William D-C Man is supported by the NIHR CLAHRC Northwest London and Irene J Higginson holds a NIHR Emeritus Senior Investigator Award.
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Affiliation(s)
- Matthew Maddocks
- Cicely Saunders Institute of Palliative Care, Policy and Rehabilitation, King’s College London, London, UK
| | - Lisa Jane Brighton
- Cicely Saunders Institute of Palliative Care, Policy and Rehabilitation, King’s College London, London, UK
| | - Morag Farquhar
- School of Health Sciences, University of East Anglia, Norwich, UK
| | - Sara Booth
- Cicely Saunders Institute of Palliative Care, Policy and Rehabilitation, King’s College London, London, UK
- Department of Oncology, University of Cambridge, Cambridge, UK
| | - Sophie Miller
- Cicely Saunders Institute of Palliative Care, Policy and Rehabilitation, King’s College London, London, UK
| | - Lara Klass
- Cicely Saunders Institute of Palliative Care, Policy and Rehabilitation, King’s College London, London, UK
| | - India Tunnard
- Cicely Saunders Institute of Palliative Care, Policy and Rehabilitation, King’s College London, London, UK
| | - Deokhee Yi
- Cicely Saunders Institute of Palliative Care, Policy and Rehabilitation, King’s College London, London, UK
| | - Wei Gao
- Cicely Saunders Institute of Palliative Care, Policy and Rehabilitation, King’s College London, London, UK
| | - Sabrina Bajwah
- Cicely Saunders Institute of Palliative Care, Policy and Rehabilitation, King’s College London, London, UK
| | - William D-C Man
- National Heart and Lung Institute, Imperial College London, London, UK
- Harefield Pulmonary Rehabilitation and Muscle Research Laboratory, Royal Brompton & Harefield NHS Foundation Trust, London, UK
| | - Irene J Higginson
- Cicely Saunders Institute of Palliative Care, Policy and Rehabilitation, King’s College London, London, UK
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22
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Sandberg J, Engström G, Ekström M. Breathlessness and incidence of COPD, cardiac events and all-cause mortality: A 44-year follow-up from middle age throughout life. PLoS One 2019; 14:e0214083. [PMID: 30883602 PMCID: PMC6422305 DOI: 10.1371/journal.pone.0214083] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Accepted: 03/06/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Breathlessness is prevalent in the general population and may be associated with adverse health outcomes. This study aimed to evaluate the association of breathlessness with Chronic Obstructive Pulmonary Disease (COPD) events, cardiac events and all-cause mortality from middle-age throughout life. METHODS Breathlessness was measured in 699, 55-year old men residing in Malmö, Sweden using modified Medical Research Council (mMRC). COPD events (hospitalisation, death or diagnosis) cardiac events and all-cause mortality was assessed using The Swedish Causes of Death Register and Hospital Discharge Register. Data was analyzed using Cox- and competing risks (Fine-Gray) regression analysis. RESULTS 695 (99%) of 699 participants died and four emigrated during follow up. Eighty-seven (12%) had mMRC = 1 and 19 (3%) had mMRC≥2. Breathlessness was associated with COPD events; adjusted Sub-Hazard Ratio 2.1 (95% CI, 1.2-3.6) for mMRC = 1 and 7.5 (2.6-21.7) for mMRC ≥ 2 but not associated with cardiac events when adjusting for competing events and confounding. Breathlessness was associated increased all- cause mortality (Hazard Ratios of 1.4 (1.1-1.7) (mMRC = 1) and 3.4 (2.1-5.6) (mMRC ≥ 2)). CONCLUSION Breathlessness is associated with increased risk of COPD events and increase in all-cause mortality from age 55 until death.
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Affiliation(s)
- Jacob Sandberg
- Lund University, Faculty of Medicine, Department of Clinical Sciences Lund, Respiratory Medicine and Allergology, Lund, Sweden
| | - Gunnar Engström
- Dept of Clinical Sciences Malmö, Lund University, Malmö, Sweden
| | - Magnus Ekström
- Lund University, Faculty of Medicine, Department of Clinical Sciences Lund, Respiratory Medicine and Allergology, Lund, Sweden
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23
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Maddocks M, Reilly CC, Jolley C, Higginson IJ. What Next in Refractory Breathlessness? Breathlessness? Research Questions for Palliative Care. J Palliat Care 2018. [DOI: 10.1177/082585971403000405] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Matthew Maddocks
- Department of Palliative Care, Policy and Rehabilitation, Cicely Saunders Institute, King's College London, London, SE5 9PJ, UK
| | - Charles C. Reilly
- King's College Hospital NHS Foundation Trust, London, UK; Department of Respiratory Medicine, King's College London, London, UK; Department of Palliative Care, Policy and Rehabilitation, Cicely Saunders Institute, King's College London, London, UK
| | - Caroline Jolley
- King's College Hospital NHS Foundation Trust, London, UK; Department of Respiratory Medicine, King's College London, London, UK; Department of Palliative Care, Policy and Rehabilitation, Cicely Saunders Institute, King's College London, London, UK
| | - Irene J. Higginson
- King's College Hospital NHS Foundation Trust, London, UK; Department of Respiratory Medicine, King's College London, London, UK; Department of Palliative Care, Policy and Rehabilitation, Cicely Saunders Institute, King's College London, London, UK
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24
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Dangers L, Montlahuc C, Kouatchet A, Jaber S, Meziani F, Perbet S, Similowski T, Resche-Rigon M, Azoulay E, Demoule A. Dyspnoea in patients receiving noninvasive ventilation for acute respiratory failure: prevalence, risk factors and prognostic impact: A prospective observational study. Eur Respir J 2018; 52:13993003.02637-2017. [PMID: 29976650 DOI: 10.1183/13993003.02637-2017] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 05/21/2018] [Indexed: 11/05/2022]
Abstract
Dyspnoea is a frequent and intense symptom in intubated patients, but little attention has been paid to dyspnoea during noninvasive mechanical ventilation in the intensive care unit (ICU).The objectives of this study were to quantify the prevalence, intensity and prognostic impact of dyspnoea in patients receiving noninvasive ventilation (NIV) for acute respiratory failure (ARF) based on secondary analysis of a prospective observational cohort study in patients who received ventilatory support for ARF in 54 ICUs in France and Belgium. Dyspnoea was measured by a modified Borg scale.Among the 426 patients included, the median (interquartile range) dyspnoea score was 4 (3-5) on admission and 3 (2-4) after the first NIV session (p=0.001). Dyspnoea intensity ≥4 after the first NIV session was associated with the Sequential Organ Failure Assessment Score (odds ratio (OR) 1.12, p=0.001), respiratory rate (OR 1.03, p=0.032), anxiety (OR 1.92, p=0.006), leaks (OR 2.5, p=0.002) and arterial carbon dioxide tension (OR 0.98, p=0.025). Dyspnoea intensity ≥4 was independently associated with NIV failure (OR 2.41, p=0.001) and mortality (OR 2.11, p=0.009), but not with higher post-ICU burden and altered quality of life.Dyspnoea is frequent and intense in patients receiving NIV for ARF and is associated with a higher risk of NIV failure and poorer outcome.
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Affiliation(s)
- Laurence Dangers
- Sorbonne Universités, UPMC Université Paris 06, INSERM, UMRS1158, Neurophysiologie Respiratoire Expérimentale et Clinique, Paris, France.,Service de Pneumologie et Réanimation Médicale (Dépt "R3S"), Assistance Publique-Hôpitaux de Paris, Groupe Hospitalier Pitié-Salpêtrière Charles Foix, Paris, France
| | - Claire Montlahuc
- Service de Biostatistique et Information Médicale, Assistance Publique-Hôpitaux de Paris, Hôpital Saint-Louis, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, INSERM, UMR-1153 (CRESS), Epidémiologie Clinique, Statistique pour la Recherche en Santé (ECSTRA), Paris, France
| | - Achille Kouatchet
- Service de Réanimation Médicale et Médecine Hyperbare, Centre Hospitalier Régional Universitaire, Angers, France
| | - Samir Jaber
- Dépt d'Anesthésie et Réanimation, Hôpital Saint-Eloi, Montpellier, France.,Montpellier School of Medicine, University of Montpellier, INSERM U1046, CNRS UMR 9214, Montpellier, France
| | - Ferhat Meziani
- Service de Réanimation Médicale, Nouvel Hôpital Civil, Hôpitaux Universitaires de Strasbourg and EA 7293, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Faculté de Médecine, Université de Strasbourg, Strasbourg, France
| | - Sébastien Perbet
- Réanimation Médico-Chirurgicale, CHU de Clermont-Ferrand, Clermont-Ferrand, France.,R2D2, EA-7281, Université d'Auvergne, Clermont-Ferrand, France
| | - Thomas Similowski
- Sorbonne Universités, UPMC Université Paris 06, INSERM, UMRS1158, Neurophysiologie Respiratoire Expérimentale et Clinique, Paris, France.,Service de Pneumologie et Réanimation Médicale (Dépt "R3S"), Assistance Publique-Hôpitaux de Paris, Groupe Hospitalier Pitié-Salpêtrière Charles Foix, Paris, France
| | - Matthieu Resche-Rigon
- Service de Biostatistique et Information Médicale, Assistance Publique-Hôpitaux de Paris, Hôpital Saint-Louis, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, INSERM, UMR-1153 (CRESS), Epidémiologie Clinique, Statistique pour la Recherche en Santé (ECSTRA), Paris, France
| | - Elie Azoulay
- Service de Réanimation Médicale, Hôpital Saint-Louis, Paris, France
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25
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Zeng X, Vonk JM, de Jong K, Xu X, Huo X, Boezen HM. No convincing association between genetic markers and respiratory symptoms: results of a GWA study. Respir Res 2017; 18:11. [PMID: 28073367 PMCID: PMC5223330 DOI: 10.1186/s12931-016-0495-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 12/17/2016] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Respiratory symptoms are associated with accelerated lung function decline, and increased hospitalization and mortality rates in the general population. Although several environmental risk factors for respiratory symptoms are known, knowledge on genetic risk factors is lacking. We aim to identify genetic variants associated with respiratory symptoms by genome-wide association (GWA) analyses. METHODS We conducted the first GWA study on cough, dyspnea and phlegm among 7,976 participants in the LifeLines I cohort and used the LifeLines II cohort (n = 5,260) and the Vlagtwedde-Vlaardingen cohort (n = 1,529) for replication. RESULTS We identified 50 SNPs that were assessed for replication. Rs16918212, located in the alpha-2-macroglobulin pseudogene 1 (A2MP1), was associated with cough in both the identification (odds ratio (OR) = 0.72, p = 5.41 × 10-5) and the meta-analyzed replication cohorts (OR = 0.83, p = 0.033). No other significant replicated associations were found. CONCLUSIONS Given that only 1 out of 50 SNPs showed significant replication (i.e. 2%) we conclude that we did not find a convincing association between genetic markers and respiratory symptoms. Since, environmental exposures are important risk factors for respiratory symptoms, the next step is to perform a genome-wide interaction (GWI) study to identify genetic susceptibility loci for respiratory symptoms in interaction with known harmful environmental exposures.
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Grants
- This study was funded by the Groningen Research Institute for Drug Exploration (GUIDE), University Medical Center Groningen, University of Groningen, the Netherlands. The LifeLines Cohort Study, and generation and management of GWAS genotype data for the LifeLines Cohort Study is supported by the Netherlands Organization of Scientific Research NWO (grant 175.010.2007.006), the Economic Structure Enhancing Fund (FES) of the Dutch government, the Ministry of Economic Affairs, the Ministry of Education, Culture and Science, the Ministry for Health, Welfare and Sports, the Northern Netherlands Collaboration of Provinces (SNN), the Province of Groningen, University Medical Center Groningen, the University of Groningen, Dutch Kidney Foundation and Dutch Diabetes Research Foundation. The Vlagtwedde-Vlaardingen cohort study was supported by the Ministry of Health and Environmental Hygiene of the Netherlands and the Netherlands Asthma Fund (grant 187) and the Netherlands Asthma Fund grant no. 3.2.02.51, the Stichting Astma Bestrijding, BBMRI-NL (Complementiation project), and the European Respiratory Society COPD research award 2011 to H.M. Boezen.
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Affiliation(s)
- Xiang Zeng
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, 1 Hanzeplein, Groningen, 9700RB, The Netherlands
- Groningen Research Institute for Asthma and COPD (GRIAC), University of Groningen, University Medical Center Groningen, 1 Hanzeplein, Groningen, 9700RB, The Netherlands
- Laboratory of Environmental Medicine and Developmental Toxicology, and Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, 22 Xinling Road, Shantou, 515041, China
| | - Judith M Vonk
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, 1 Hanzeplein, Groningen, 9700RB, The Netherlands
- Groningen Research Institute for Asthma and COPD (GRIAC), University of Groningen, University Medical Center Groningen, 1 Hanzeplein, Groningen, 9700RB, The Netherlands
| | - Kim de Jong
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, 1 Hanzeplein, Groningen, 9700RB, The Netherlands
- Groningen Research Institute for Asthma and COPD (GRIAC), University of Groningen, University Medical Center Groningen, 1 Hanzeplein, Groningen, 9700RB, The Netherlands
| | - Xijin Xu
- Laboratory of Environmental Medicine and Developmental Toxicology, and Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, 22 Xinling Road, Shantou, 515041, China
| | - Xia Huo
- School of Environment, Guangdong Key Laboratory of Environmental Pollution and Health, Guangzhou Key Laboratory of Environmental Exposure and Health, Jinan University, Guangzhou, 510632, China
| | - H Marike Boezen
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, 1 Hanzeplein, Groningen, 9700RB, The Netherlands.
- Groningen Research Institute for Asthma and COPD (GRIAC), University of Groningen, University Medical Center Groningen, 1 Hanzeplein, Groningen, 9700RB, The Netherlands.
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26
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Lund N, Gränsbo K, Wernersson C, Melander O. Cardiometabolic biomarkers are predictors of readmission and death in patients hospitalized for acute dyspnea. Am J Emerg Med 2016; 35:610-614. [PMID: 28062207 PMCID: PMC5754318 DOI: 10.1016/j.ajem.2016.12.048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 12/12/2016] [Accepted: 12/16/2016] [Indexed: 12/20/2022] Open
Abstract
Background Acute dyspnea affects a large heterogeneous patient group with high mortality and readmission rates. Purpose To investigate if cardiometabolic biomarkers and clinical characteristics predict readmission and death in patients hospitalized for acute dyspnea. Methods 65 dyspnea patients at a general internal medicine ward were followed for six months. The combined endpoint was readmission or death. Measurements and results Cardiometabolic biomarkers at admission were related to the endpoint in Cox proportional hazard models (adjusted for sex, age, oxygen saturation, respiratory rate and C-reactive protein (CRP)). The biomarkers tissue-type plasminogen activator (tPA), prolactin (PRL), tumor necrosis factor receptor superfamily member 6 (FAS) and C-C motif chemokine 3 (CCL3) were independently and significantly related to the endpoint and combined into a biomarker risk score (BRS). Each SD increment of the BRS conferred a hazard ratio (HR) of 2.13 (1.39–3.27) P = 0.001. The top vs bottom tertile of the BRS conferred a HR of 4.75 (1.93–11.68) P = 0.001. Dyspnea severity was also associated with worse outcome, HR = 3.43 (1.28–9.20) P = 0.014. However, when mutually adjusted the BRS remained significant (P = 0.004) whereas dyspnea severity was not. The BRS was related to the endpoint among patients with mild to moderate dyspnea (P = 0.016) but not among those with severe dyspnea. Conclusion A score of tPA, PRL, FAS and CCL3 predicts 6-month death and readmission in patients hospitalized for acute dyspnea and may prove useful to optimize length of stay and follow-up. Although the BRS outweighs dyspnea severity in prediction of the endpoint, its prognostic role is strongest in mild-moderate dyspnea.
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Affiliation(s)
- Nathalie Lund
- Skåne University Hospital Malmö, Clinical Research Centre, Malmoe, Sweden.
| | - Klas Gränsbo
- Skåne University Hospital Malmö, Clinical Research Centre CRC, Malmoe, Sweden
| | - Camilla Wernersson
- Skåne University Hospital Malmö, Clinical Research Centre CRC, Malmoe, Sweden
| | - Olle Melander
- Skåne University Hospital Malmö, Clinical Research Centre CRC, Malmoe, Sweden
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27
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Santos M, Kitzman DW, Matsushita K, Loehr L, Sueta CA, Shah AM. Prognostic Importance of Dyspnea for Cardiovascular Outcomes and Mortality in Persons without Prevalent Cardiopulmonary Disease: The Atherosclerosis Risk in Communities Study. PLoS One 2016; 11:e0165111. [PMID: 27780208 PMCID: PMC5079579 DOI: 10.1371/journal.pone.0165111] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Accepted: 10/06/2016] [Indexed: 11/18/2022] Open
Abstract
Background The relationship between dyspnea and incident heart failure (HF) and myocardial infarction (MI) among patients without previously diagnosed cardiopulmonary disease is unclear. We studied the prognostic relevance of self-reported dyspnea for cardiovascular outcomes and all-cause mortality in persons without previously diagnosed cardiopulmonary disease. Methods and Results We studied 10 881 community-dwelling participants (mean age 57±6, 56% women, 25% black) who were free of prevalent cardiopulmonary disease from Atherosclerosis Risk in Communities Study. Dyspnea status at study entry using the modified Medical Research Council (mMRC) scale. The primary outcomes were time to HF, MI or all-cause death. Dyspnea prevalence was 22%, and was mild (mMRC grade 1 or 2) in 21% and moderate-to-severe (mMRC 3 or 4) in 1%. The main correlates of dyspnea were older age, female sex, higher BMI and active smoking. Over a follow-up of 19±5 years, greater self-reported dyspnea severity was associated with worse prognosis. Mild dyspnea was associated with significantly heightened risk of HF (adjusted Hazard Ratio, HR,1.30; 95% CI: 1.16–1.46), MI (adjusted HR 1.34; 95%CI: 1.20–1.50), and death (adjusted HR 1.16; 95%CI: 1.06–1.26), with moderate/severe dyspnea associated with an even greater risk (adjusted HR 2.14, 95%CI: 1.59–2.89; 1.93, 95%CI: 1.41–2.56; 1.96, 95%CI: 1.55–2.48, respectively). Conclusion In community-dwelling persons free of previously diagnosed cardiopulmonary disease, self-reported dyspnea is common and, even when of mild intensity, it is independently associated with a greater risk of incident HF, MI, and death. Our data emphasize the prognostic importance of even mild self-reported dyspnea for cardiovascular outcomes.
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Affiliation(s)
- Mario Santos
- Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, MA, United States of America
- Department of Physiology and Cardiothoracic Surgery, Cardiovascular R&D Unit, Faculty of Medicine, University of Porto, Porto, Portugal
| | - Dalane W. Kitzman
- Wake Forest Baptist Medical Center, Winston Salem, NC, United States of America
| | - Kunihiro Matsushita
- Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
| | - Laura Loehr
- University of North Carolina, Chapel Hill, NC, United States of America
| | - Carla A. Sueta
- University of North Carolina, Chapel Hill, NC, United States of America
| | - Amil M. Shah
- Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, MA, United States of America
- * E-mail:
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28
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Chin C, Booth S. Managing breathlessness: a palliative care approach. Postgrad Med J 2016; 92:393-400. [PMID: 27053519 DOI: 10.1136/postgradmedj-2015-133578] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 03/06/2016] [Indexed: 11/04/2022]
Abstract
Breathlessness is an important and common symptom globally, affecting patients with a variety of malignant and non-malignant diseases. It causes considerable suffering to patients and also their families, and is a significant cost to healthcare systems. Optimal management of the symptom should therefore be of interest and importance to a wide range of clinicians. Best practice in the management of breathlessness consists of both non-pharmacological and pharmacological interventions as evidenced by recent randomised controlled trials of multidisciplinary breathlessness support services. As well as providing evidence for integration of early palliative care into respiratory services, these revealed that patient distress due to breathlessness can be significantly reduced and better outcomes can be achieved at lower cost than standard care.
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Affiliation(s)
- Chloe Chin
- Department of Palliative Medicine, Addenbrookes Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Sara Booth
- Department of Palliative Medicine, Addenbrookes Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
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29
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Johnson MJ, Bland JM, Gahbauer EA, Ekström M, Sinnarajah A, Gill TM, Currow DC. Breathlessness in Elderly Adults During the Last Year of Life Sufficient to Restrict Activity: Prevalence, Pattern, and Associated Factors. J Am Geriatr Soc 2016; 64:73-80. [PMID: 26782854 PMCID: PMC4719155 DOI: 10.1111/jgs.13865] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To investigate relationships between age, clinical characteristics, and breathlessness sufficient to have people spend at least half a day a month in bed or to cut down on their usual activities (restricting breathlessness) during the last year of life. DESIGN Secondary data analysis. SETTING General community. PARTICIPANTS Nondisabled persons aged 70 and older (N=754). MEASUREMENTS Monthly telephone interviews were conducted to determine the occurrence of restricting breathlessness. The primary outcome was percentage of months with restricting breathlessness reported during the last year of life. RESULTS Data regarding breathlessness were available for 548 of 589 (93.0%) participants who died (mean age 86.7, range 71-106; 38.8% male) between enrollment (March 1998 to October 1999) and June 2013; 311 of these (56.8%) reported restricting breathlessness at some point during the last year of life, but none reported it every month. Frequency increased in the months closer to death, irrespective of cause. Restricting breathlessness was associated with anxiety (0.25 percentage points greater in months with breathlessness per percentage point months reported anxiety, 95% confidence interval (CI)=0.16-0.34, P<.001), depression (0.14, 95% CI=0.05-0.24, P=.003), and mobility problems (0.07, 0.03-0.1, P<.001). Percentage months of restricting breathlessness was greater if chronic lung disease was noted at the most-recent comprehensive assessment (6.62 percentage points, 95% CI=4.31-8.94, P<.001), heart failure (3.34 percentage points, 95% CI=0.71-5.97, P=.01), and ex-smoker status (3.01 percentage points, 95% CI=0.94-5.07, P=.004) but decreased with older age (-0.19 percentage points, 95% CI=-0.37 to -0.02, P=.03). CONCLUSION Restricting breathlessness increased in this elderly population in the months preceding death from any cause. Breathlessness should be assessed and managed in the context of poor prognosis.
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Affiliation(s)
| | | | - Evelyne A. Gahbauer
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT
| | - Magnus Ekström
- Discipline of Palliative and Supportive Services, Flinders University, Adelaide, Australia
| | - Aynharan Sinnarajah
- Palliative & End of Life Care, Alberta Health Services (AHS) - Calgary Zone, Canada
| | - Thomas M. Gill
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT
| | - David C. Currow
- Discipline of Palliative and Supportive Services, Flinders University, Adelaide, Australia
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30
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Song WJ, Chang YS, Faruqi S, Kang MK, Kim JY, Kang MG, Kim S, Jo EJ, Lee SE, Kim MH, Plevkova J, Park HW, Cho SH, Morice AH. Defining Chronic Cough: A Systematic Review of the Epidemiological Literature. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2015; 8:146-55. [PMID: 26739408 PMCID: PMC4713878 DOI: 10.4168/aair.2016.8.2.146] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 07/09/2015] [Indexed: 01/29/2023]
Abstract
Purpose Recent evidence suggests a global burden of chronic cough in general populations. However, the definitions vary greatly among epidemiological studies, and none have been validated for clinical relevance. We aimed to examine previous epidemiological definitions in detail and explore the operational characteristics. Methods A systematic review was conducted for epidemiological surveys that reported the prevalence of chronic cough in general adult populations during the years 1980 to 2013. A literature search was performed on Pubmed and Embase without language restriction. Epidemiological definitions for chronic cough were classified according to their components, such as cutoff duration. Meta-analyses were performed for the male-to-female ratio of chronic cough prevalence to explore operational characteristics of epidemiological definitions. Results A total of 70 studies were included in the systematic review. The most common epidemiological definition was identified as 'cough ≥3 months' duration without specification of phlegm (n=50); however, it conflicted with the cutoff duration in current clinical guidelines (cough ≥8 weeks). Meta-analyses were performed for the male-to-female ratio of chronic cough among 28 studies that reported sex-specific prevalence using the most common definition. The pooled male-to-female odds ratio was 1.26 (95% confidence interval 0.92-1.73) with significant heterogeneity (I2=96%, P<0.001), which was in contrast to clinical observations of female predominance from specialist clinics. Subgroup analyses did not reverse the ratio or reduce the heterogeneity. Conclusions This study identified major issues in defining chronic cough in future epidemiological studies. The conflict between epidemiological and clinical diagnostic criteria needs to be resolved. The unexpected difference in the gender predominance between the community and clinics warrants further studies. Clinical validation of the existing definition is required.
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Affiliation(s)
- Woo Jung Song
- Division of Allergy and Clinical Immunology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Yoon Seok Chang
- Division of Allergy and Clinical Immunology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.,Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Shoaib Faruqi
- Centre for Cardiovascular and Metabolic Research, Hull York Medical School, Castle Hill Hospital, University of Hull, Cottingham, East Yorkshire, United Kingdom
| | - Min Koo Kang
- Division of Allergy and Clinical Immunology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Ju Young Kim
- Division of Allergy and Clinical Immunology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Min Gyu Kang
- Department of Internal Medicine, Chungbuk National University College of Medicine, Cheongju, Korea
| | - Sujeong Kim
- Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea
| | - Eun Jung Jo
- Department of Internal Medicine, Pusan National University College of Medicine, Busan, Korea
| | - Seung Eun Lee
- Department of Internal Medicine, Pusan National University College of Medicine, Busan, Korea
| | - Min Hye Kim
- Department of Internal Medicine, Ewha Woman's University School of Medicine, Seoul, Korea
| | - Jana Plevkova
- Department of Pathophysiology and Simulation Centre, Jessenius Faculty of Medicine, Comenius University, Martin, Slovak Republic
| | - Heung Woo Park
- Division of Allergy and Clinical Immunology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Sang Heon Cho
- Division of Allergy and Clinical Immunology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.
| | - Alyn H Morice
- Centre for Cardiovascular and Metabolic Research, Hull York Medical School, Castle Hill Hospital, University of Hull, Cottingham, East Yorkshire, United Kingdom.
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Unverdorben M, Parodi G, Pistolesi M, Storey RF. Dyspnea related to reversibly-binding P2Y12 inhibitors: A review of the pathophysiology, clinical presentation and diagnostics. Int J Cardiol 2015; 202:167-73. [PMID: 26386945 DOI: 10.1016/j.ijcard.2015.08.162] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 08/13/2015] [Accepted: 08/20/2015] [Indexed: 10/23/2022]
Abstract
Dyspnea is a common symptom physiologically associated with strenuous exercise and pathologically reflecting well-known diseases and conditions that are predominantly pulmonary, cardiovascular, and weight-related in origin. Dyspnea improves with appropriate measures that enhance physical performance and treatment of the underlying diseases. Dyspnea is less commonly triggered by other causes such as the environment (e.g., ozone), drugs, and others, some of which do not seem to affect bronchopulmonary function as evidenced by normal results of comprehensive pulmonary function testing. In cardiovascular medicine, dyspnea has recently attracted attention because it has been reported that this symptom occurs more frequently with the administration of the new oral reversibly-binding platelet P2Y12 receptor inhibitors ticagrelor [1-6], cangrelor [7-10], and elinogrel [11]. This paper succinctly addresses the current understanding of the pathophysiology, clinical presentation, and diagnostics of dyspnea, associated either with bronchopulmonary function impairment, as triggered mainly by pulmonary and cardiovascular diseases, or without bronchopulmonary function impairment, as induced by endogenous or external compounds such as drugs in order to provide a context for understanding, recognizing and managing P2Y12 inhibitor-induced dyspnea.
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Affiliation(s)
- Martin Unverdorben
- Clinical Research Institute, Center for Cardiovascular Diseases, Academic Teaching Institution of the Goethe-University Frankfurt/Main, Rotenburg an der Fulda, Germany.
| | - Guido Parodi
- Department of Cardiology, Careggi Hospital, Florence, Italy
| | - Massimo Pistolesi
- Department of Experimental and Clinical Medicine, Respiratory Medicine, University of Florence, Italy
| | - Robert F Storey
- Department of Cardiovascular Science, University of Sheffield, Sheffield, United Kingdom
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Affiliation(s)
- Robert B Banzett
- Dept of Medicine, Harvard Medical School, Boston, MA, USA Division of Pulmonary, Critical Care, and Sleep Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Carl R O'Donnell
- Dept of Medicine, Harvard Medical School, Boston, MA, USA Division of Pulmonary, Critical Care, and Sleep Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA
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Johnson MJ, Currow DC, Booth S. Prevalence and assessment of breathlessness in the clinical setting. Expert Rev Respir Med 2014; 8:151-61. [DOI: 10.1586/17476348.2014.879530] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Silva DR, Viana VP, Müller AM, Coelho AC, Deponti GN, Livi FP, Dalcin PDTR. Epidemiological aspects of respiratory symptoms treated in the emergency room of a tertiary care hospital. J Bras Pneumol 2013; 39:164-72. [PMID: 23670501 PMCID: PMC4075817 DOI: 10.1590/s1806-37132013000200007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Accepted: 11/16/2012] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE: To evaluate the prevalence of respiratory symptoms as the motive for emergency room visits by adult and pediatric patients, describing the major clinical syndromes diagnosed and the outcomes of the patients. METHODS: A cross-sectional study conducted in the emergency room of a tertiary care university hospital. Between November of 2008 and November of 2009, we reviewed the total number of emergency room visits per day. Children and adults who presented with at least one respiratory symptom were included in the study. The electronic medical records were reviewed, and the major characteristics of the patients were recorded. RESULTS: During the study period, there were 37,059 emergency room visits, of which 11,953 (32.3%) were motivated by respiratory symptoms. The prevalence of emergency room visits due to respiratory symptoms was 28.7% and 38.9% among adults and children, respectively. In adults, the rates of hospitalization and mortality were 21.2% and 2.7%, respectively, compared with 11.9% and 0.3%, respectively, in children. Among the adults, the time from symptom onset to emergency room visit correlated positively with the need for hospitalization (p < 0.0001), the length of the hospital stay (p < 0.0001), and the mortality rate (p = 0.028). CONCLUSIONS: We found a high prevalence of respiratory symptoms as the motive for emergency room visits by adult and pediatric patients. Our results could inform decisions regarding the planning of prevention measures. Further epidemiological studies are needed in order to clarify the risk factors for severe respiratory symptoms.
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Affiliation(s)
- Denise Rossato Silva
- Universidade Federal do Rio Grande do Sul - UFRGS, Federal University of Rio Grande do Sul - School of Medicine, Porto Alegre, Brazil.
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Grønseth R, Vollmer WM, Hardie JA, Ólafsdóttir IS, Lamprecht B, Buist AS, Gnatiuc L, Gulsvik A, Johannessen A, Enright P. Predictors of dyspnoea prevalence: results from the BOLD study. Eur Respir J 2013; 43:1610-20. [PMID: 24176991 DOI: 10.1183/09031936.00036813] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Dyspnoea is a cardinal symptom for cardiorespiratory diseases. No study has assessed worldwide variation in dyspnoea prevalence or predictors of dyspnoea. We used cross-sectional data from population-based samples in 15 countries of the Burden of Obstructive Lung Disease (BOLD) study to estimate prevalence of dyspnoea in the full sample, as well as in an a priori defined low-risk group (few risk factors or dyspnoea-associated diseases). Dyspnoea was defined by the modified Medical Research Council questions. We used ordered logistic regression analysis to study the association of dyspnoea with site, sex, age, education, smoking habits, low/high body mass index, self-reported disease and spirometry results. Of the 9484 participants, 27% reported any dyspnoea. In the low-risk subsample (n=4329), 16% reported some dyspnoea. In multivariate analyses, all covariates were correlated to dyspnoea, but only 13% of dyspnoea variation was explained. Females reported more dyspnoea than males (odds ratio ∼2.1). When forced vital capacity fell below 60% of predicted, dyspnoea was much more likely. There was considerable geographical variation in dyspnoea, even when we adjusted for known risk factors and spirometry results. We were only able to explain 13% of dyspnoea variation.
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Affiliation(s)
- Rune Grønseth
- Dept of Clinical Science, University of Bergen, Bergen Dept of Thoracic Medicine, Haukeland University Hospital, Bergen
| | | | - Jon A Hardie
- Dept of Clinical Science, University of Bergen, Bergen Dept of Thoracic Medicine, Haukeland University Hospital, Bergen
| | - Inga Sif Ólafsdóttir
- Respiratory Medicine and Allergology, Dept of Medical Sciences, Uppsala University, University Hospital, Uppsala, Sweden
| | - Bernd Lamprecht
- Dept of Pulmonary Medicine, Paracelsus Medical University, Salzburg, Austria
| | - A Sonia Buist
- Oregon Health and Sciences University, Portland, OR, USA
| | - Louisa Gnatiuc
- Respiratory Epidemiology and Public Health, Imperial College, London, UK
| | - Amund Gulsvik
- Dept of Clinical Science, University of Bergen, Bergen Dept of Thoracic Medicine, Haukeland University Hospital, Bergen
| | - Ane Johannessen
- Centre for Clinical Research, Haukeland University Hospital, Bergen, Norway
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Leivseth L, Nilsen TIL, Mai XM, Johnsen R, Langhammer A. Lung function and respiratory symptoms in association with mortality: The HUNT Study. COPD 2013; 11:59-80. [PMID: 23875716 DOI: 10.3109/15412555.2013.781578] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Whether respiratory symptoms are associated with mortality independent of lung function is unclear. The authors explored the association of the exposures i) lung function, ii) respiratory symptoms, and iii) lung function and respiratory symptoms combined, with the outcomes all-cause and cardiovascular mortality. The study included 10,491 adults who participated in the Nord-Trøndelag Health Study (HUNT) Lung Study in 1995-1997 and were followed through 2009. Cox regression was used to calculate adjusted hazard ratios (HRs) with 95% confidence intervals for all-cause and cardiovascular mortality associated with pre-bronchodilator% predicted forced expiratory volume in 1 second (ppFEV1), chronic obstructive pulmonary disease (COPD) grades, and respiratory symptoms (chronic bronchitis, wheeze, and levels of dyspnoea). Lung function was inversely associated with all-cause mortality. Compared to ppFEV1 ≥100, ppFEV1 <50 increased the HR to 6.85 (4.46-10.52) in women and 3.88 (2.60-5.79) in men. Correspondingly, compared to normal airflow, COPD grade 3 or 4 increased the HR to 6.50 (4.33-9.75) in women and 3.57 (2.60-4.91) in men. Of the respiratory symptoms, only dyspnoea when walking remained associated with all-cause mortality after controlling for lung function (HR 1.73 [1.04-2.89] in women and 1.57 [1.04-2.36] in men). Analyses of lung function and dyspnoea when walking as a combined exposure further supported this finding. Overall, associations between lung function and cardiovascular mortality were weaker, and respiratory symptoms were not associated with cardiovascular mortality. In conclusion, lung function was inversely associated with all-cause and cardiovascular mortality, and dyspnoea when walking was associated with all-cause mortality independent of lung function.
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Affiliation(s)
- Linda Leivseth
- 1Department of Public Health and General Practice, Norwegian University of Science and Technology (NTNU) , Trondheim , Norway
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Dyspnea severity, changes in dyspnea status and mortality in the general population: the Vlagtwedde/Vlaardingen study. Eur J Epidemiol 2012; 27:867-76. [PMID: 23054033 PMCID: PMC3501159 DOI: 10.1007/s10654-012-9736-0] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Accepted: 09/21/2012] [Indexed: 10/27/2022]
Abstract
Dyspnea is a predictor of mortality. The effects of dyspnea severity and changes in dyspnea status on all-cause and cause-specific mortality remain unclear. The Vlagtwedde/Vlaardingen study started in 1965 and subjects were re-examined every 3 years until 1989/1990. Vital status of all 8,465 subjects on December 31st, 2008 was assessed. Associations between mortality and dyspnea severity and changes in dyspnea status were investigated using Cox regression adjusted for gender, age, FEV1% predicted, place of residence, smoking and BMI. After 43 years of follow-up, 2,883 (39%) of 7,360 subjects examined for dyspnea severity had died, 1,386 (19%) due to cardiovascular disease, 267 (4%) due to chronic obstructive pulmonary disease (COPD). Subjects with moderate and severe dyspnea had increased all-cause and cardiovascular mortality [moderate: HR=1.3 (95% CI 1.2-1.5) and 1.4 (1.1-1.6), severe: 1.5 (1.1-2.0) and 1.9 (1.3-2.6) respectively] compared to asymptomatics. Severe dyspnea was significantly associated with COPD mortality [3.3 (2.0-5.2)]. Subjects who lost dyspnea had hazard ratios for all-cause and cause-specific mortality comparable to asymptomatics. Persistent dyspnea and dyspnea development were risk factors for all-cause, cardiovascular and COPD mortality [persistent: 2.0 (1.4-2.8), 1.9 (1.2-3.3) and 3.3 (1.2-8.9), development: 1.5 (1.2-1.8), 2.0 (1.5-2.6) and 3.8 (2.3-6.3) respectively]. Additionally, dyspnea effects on mortality were more pronounced in overweight/obese and older subjects and in subjects with better lung function. These results show that dyspnea is associated with mortality in a severity-dependent manner. Furthermore this study is the first showing that dyspnea remission normalizes mortality risk. Having or developing dyspnea is a risk factor for mortality.
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Søyseth V, Johnsen HL, Henneberger PK, Kongerud J. The incidence of work-related asthma-like symptoms and dust exposure in Norwegian smelters. Am J Respir Crit Care Med 2012; 185:1280-5. [PMID: 22517789 DOI: 10.1164/rccm.201110-1809oc] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE The prevalence of respiratory symptoms among employees in smelters is positively associated with dust exposure. OBJECTIVES To investigate the association between the incidence of work-related asthma-like symptoms (WASTH) and dust exposure. METHODS All the employees were invited to participate in a 5-year longitudinal study. The outcome of WASTH was defined as the combination of dyspnea and wheezing improving on rest days or vacation in an individual who had no asthma previously. Information about smoking and occupational status was obtained from a questionnaire. A job exposure matrix of total dust was developed. Multivariate data analyses were performed using Cox regression. MEASUREMENTS AND MAIN RESULTS The total follow-up time of the employees (n = 2,476) was 8,469 years, and the median follow-up time for participants was 4.0 years. During the follow-up, 91 employees developed WASTH, and the corresponding incidence rate for WASTH per 1,000 person-years was 8.9 (7.3-10.9) (95% confidence interval in parentheses). The risk ratio of WASTH increased significantly (P = 0.0001) with dust exposure in the middle and high categories (1.0-2.9 and ≥ 3.0 mg/m(3)). Stratified analyses showed that the effect of current dust exposure varied with both previous exposure (PE) to dust and fumes (P = 0.006) and airflow limitation (AFL) (P = 0.033). The final analyses showed that the risk ratios for WASTH per 1 mg/m(3) increase in current dust exposure were 1.1 (0.93-1.2), 1.4 (1.1-1.8), 1.6 (1.1-2.3), and 1.9 (1.2-3.0) for the categories (PE+/AFL-), (PE-/AFL-), (PE+/AFL+, and (PE-/AFL+). CONCLUSIONS In conclusion, dust exposure was associated with an increased incidence of WASTH.
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Affiliation(s)
- Vidar Søyseth
- Department of Medicine, Akershus University Hospital and Institute of Clinical Medicine, Campus Akershus University Hospital, University of Oslo, Lørenskog, Norway.
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Parshall MB, Schwartzstein RM, Adams L, Banzett RB, Manning HL, Bourbeau J, Calverley PM, Gift AG, Harver A, Lareau SC, Mahler DA, Meek PM, O'Donnell DE. An official American Thoracic Society statement: update on the mechanisms, assessment, and management of dyspnea. Am J Respir Crit Care Med 2012; 185:435-52. [PMID: 22336677 PMCID: PMC5448624 DOI: 10.1164/rccm.201111-2042st] [Citation(s) in RCA: 1095] [Impact Index Per Article: 91.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Dyspnea is a common, distressing symptom of cardiopulmonary and neuromuscular diseases. Since the ATS published a consensus statement on dyspnea in 1999, there has been enormous growth in knowledge about the neurophysiology of dyspnea and increasing interest in dyspnea as a patient-reported outcome. PURPOSE The purpose of this document is to update the 1999 ATS Consensus Statement on dyspnea. METHODS An interdisciplinary committee of experts representing ATS assemblies on Nursing, Clinical Problems, Sleep and Respiratory Neurobiology, Pulmonary Rehabilitation, and Behavioral Science determined the overall scope of this update through group consensus. Focused literature reviews in key topic areas were conducted by committee members with relevant expertise. The final content of this statement was agreed upon by all members. RESULTS Progress has been made in clarifying mechanisms underlying several qualitatively and mechanistically distinct breathing sensations. Brain imaging studies have consistently shown dyspnea stimuli to be correlated with activation of cortico-limbic areas involved with interoception and nociception. Endogenous and exogenous opioids may modulate perception of dyspnea. Instruments for measuring dyspnea are often poorly characterized; a framework is proposed for more consistent identification of measurement domains. CONCLUSIONS Progress in treatment of dyspnea has not matched progress in elucidating underlying mechanisms. There is a critical need for interdisciplinary translational research to connect dyspnea mechanisms with clinical treatment and to validate dyspnea measures as patient-reported outcomes for clinical trials.
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Parshall MB, Schwartzstein RM, Adams L, Banzett RB, Manning HL, Bourbeau J, Calverley PM, Gift AG, Harver A, Lareau SC, Mahler DA, Meek PM, O'Donnell DE. An official American Thoracic Society statement: update on the mechanisms, assessment, and management of dyspnea. Am J Respir Crit Care Med 2012. [PMID: 22336677 DOI: 10.1164/rccm.201111–2042st] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Dyspnea is a common, distressing symptom of cardiopulmonary and neuromuscular diseases. Since the ATS published a consensus statement on dyspnea in 1999, there has been enormous growth in knowledge about the neurophysiology of dyspnea and increasing interest in dyspnea as a patient-reported outcome. PURPOSE The purpose of this document is to update the 1999 ATS Consensus Statement on dyspnea. METHODS An interdisciplinary committee of experts representing ATS assemblies on Nursing, Clinical Problems, Sleep and Respiratory Neurobiology, Pulmonary Rehabilitation, and Behavioral Science determined the overall scope of this update through group consensus. Focused literature reviews in key topic areas were conducted by committee members with relevant expertise. The final content of this statement was agreed upon by all members. RESULTS Progress has been made in clarifying mechanisms underlying several qualitatively and mechanistically distinct breathing sensations. Brain imaging studies have consistently shown dyspnea stimuli to be correlated with activation of cortico-limbic areas involved with interoception and nociception. Endogenous and exogenous opioids may modulate perception of dyspnea. Instruments for measuring dyspnea are often poorly characterized; a framework is proposed for more consistent identification of measurement domains. CONCLUSIONS Progress in treatment of dyspnea has not matched progress in elucidating underlying mechanisms. There is a critical need for interdisciplinary translational research to connect dyspnea mechanisms with clinical treatment and to validate dyspnea measures as patient-reported outcomes for clinical trials.
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Skogstad M, Kjærheim K, Fladseth G, Molander P. [Smoking ban in restaurants and respiratory symptoms among employees]. TIDSSKRIFT FOR DEN NORSKE LEGEFORENING 2011; 131:2119-21. [PMID: 22048207 DOI: 10.4045/tidsskr.09.0310] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
BACKGROUND Along with the introduction of a smoking ban in restaurants in 2004, respiratory symptoms, urinary cotinine and lung function among employees in 13 different bars and restaurants were studied before and after the ban came into force. At the same time measurements of air quality were taken at the respective restaurants and bars. The purpose of this study was to compare self-respiratory symptoms before and after the smoking ban among the staff at the establishments. MATERIAL AND METHODS The study included 93 men and women. These were followed during a work-shift before the smoking ban and three to eight months later. Initially 86 of the participants answered a questionnaire about respiratory tract symptoms , while 67 did so at follow-up. RESULTS Before the ban 39 of the subjects (45.3%) reported wheezing in the chest and 28 (32.6%) said they had recently had an upper respiratory tract infection. 43.3% of the participants reported fewer symptoms and 20.9% more symptoms after the ban, while 35.8% reported no change. The corresponding figures among smokers were 47.5%, 15.0% and 37.5%. INTERPRETATIONS This study shows that the introduction of a smoking ban in restaurants contributes to a reduction in reported respiratory symptoms among employees, and may therefore be advantageous for the health of this group.
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Puddu PE, Menotti A, Tolonen H, Nedeljkovic S, Kafatos AG. Determinants of 40-year all-cause mortality in the European cohorts of the Seven Countries Study. Eur J Epidemiol 2011; 26:595-608. [PMID: 21713523 DOI: 10.1007/s10654-011-9600-7] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2011] [Accepted: 06/16/2011] [Indexed: 01/25/2023]
Abstract
If a few risk factors had predictive power for all-cause mortality in different geographical-cultural areas, then preventive efforts might be concentrated on these. Thirteen potential risk factors were measured in 6,554 men aged 40-59 around 1960 in Northern, Southern and Eastern European areas of the Seven Countries Study. In 40 years 85.3% of men died in the pooled areas (87.9, 81.8 and 87.9% in Northern, Southern and Eastern Europe, respectively). Six risk factors were significant predictors of events in all three areas: directly for age, smoking habits, mean blood pressure, heart rate and ECG abnormalities; inversely for forced expiratory volume. In a pooled model also father and mother life status, socio-economic status, and arm circumference (the last one in an inverse way) had significant coefficients that were not heterogeneous across areas (except for socio-economic status). Serum cholesterol was around significance. ROC curves had values of 0.833, 0.806 and 0.819 respectively in Northern, Southern and Eastern Europe, and 0.827 in the pooled areas. Correlation coefficients between observed and expected cases in deciles of estimated risk were between 0.98 and 0.99. Survivors after 40 years in the lower half of the estimated risk were 10.7, 23.6 and 13.3% in Northern, Southern and Eastern Europe, respectively. Under- or over-estimate of cross-applying risk functions did not exceed 15%. All-cause mortality and survival in middle aged men during 40 years were strongly associated with a few, mainly cardiovascular, risk factors, whose predictive power was similar in different cultures across Europe.
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Affiliation(s)
- Paolo Emilio Puddu
- Department of Cardiovascular Pathophysiology, Anaesthesiology and Surgery, Laboratory of Biotechnologies Applied to Cardiovascular Diseases, Sapienza University, Rome, Italy.
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Søyseth V, Johnsen HL, Bugge MD, Kongerud J. The association between symptoms and exposure is stronger in dropouts than in non-dropouts among employees in Norwegian smelters: a five-year follow-up study. Int Arch Occup Environ Health 2011; 85:27-33. [PMID: 21445648 PMCID: PMC3249535 DOI: 10.1007/s00420-011-0631-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2010] [Accepted: 03/10/2011] [Indexed: 12/02/2022]
Abstract
Purpose We have investigated the association between respiratory symptoms and dust exposure among employees in 18 Norwegian smelters using a longitudinal design. Methods All employees (N = 3,084) were examined annually for 5 years (12,996 health examinations). At each examination, the subjects reported if they had respiratory symptoms, coded as 1 (yes) or 0 (no), on a respiratory questionnaire. Symptom score was constructed as the sum of symptoms (0–5). Full-time workers in the production line were classified as line operators; subjects never exposed in the production line were regarded as non-exposed. The remaining individuals were classified as non-line operators. A job-exposure matrix regarding dust exposure was also available. Analyses of repeated measurements were performed using generalised linear mixed model with log-link (Poisson regression). Adjustments were made for overdispersion. Results The mean age at inclusion was 39.0 years, and 89% were men. The median dust exposure in tertiles 1–3 was 0.19, 1.76 and 3.47 mg/m3. The longitudinal analyses showed that the association between symptoms-score ratio (SSR) and job category was significantly stronger in dropouts compared with non-dropouts (p = 0.01). Among the dropouts, SSR was 1.61 (95% confidence interval: 1.27–2.05) and 1.39 (1.09–1.77) in line operators and non-line operators compared with non-exposed employees, respectively. The corresponding SSR for subjects who completed the study was 1.13 (1.01–1.27) and 1.12 (1.00–1.26), respectively. Similarly, among the dropouts, the SSR between the second and the first tertile was 1.28 (1.05–1.55) and 1.37 (1.13–1.66) between the third tertile and the first tertile. Conclusions Line operators had more respiratory symptoms than non-exposed employees. This effect was significantly stronger in dropouts than in those who continued their jobs, indicating that there is a selection of subjects without respiratory symptoms in this industry.
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Affiliation(s)
- Vidar Søyseth
- Department of Medicine, Faculty Division Akershus University Hospital, University of Oslo, 1478, Lørenskog, Norway.
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Voll-Aanerud M, Eagan TML, Plana E, Omenaas ER, Bakke PS, Svanes C, Siroux V, Pin I, Antó JM, Leynaert B. Respiratory symptoms in adults are related to impaired quality of life, regardless of asthma and COPD: results from the European community respiratory health survey. Health Qual Life Outcomes 2010; 8:107. [PMID: 20875099 PMCID: PMC2954977 DOI: 10.1186/1477-7525-8-107] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2010] [Accepted: 09/27/2010] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Respiratory symptoms are common in the general population, and their presence is related to Health-related quality of life (HRQoL). The objective was to describe the association of respiratory symptoms with HRQoL in subjects with and without asthma or COPD and to investigate the role of atopy, bronchial hyperresponsiveness (BHR), and lung function in HRQoL. METHODS The European Community Respiratory Health Survey (ECRHS) I and II provided data on HRQoL, lung function, respiratory symptoms, asthma, atopy, and BHR from 6009 subjects. Generic HRQoL was assessed through the physical component summary (PCS) score and the mental component summary (MCS) score of the SF-36.Factor analyses and linear regressions adjusted for age, gender, smoking, occupation, BMI, comorbidity, and study centre were conducted. RESULTS Having breathlessness at rest in ECRHS II was associated with mean score (95% CI) impairment in PCS of -8.05 (-11.18, -4.93). Impairment in MCS score in subjects waking up with chest tightness was -4.02 (-5.51, -2.52). The magnitude of HRQoL impairment associated with respiratory symptoms was similar for subjects with and without asthma/COPD. Adjustments for atopy, BHR, and lung function did not explain the association of respiratory symptoms and HRQoL in subjects without asthma and/or COPD. CONCLUSION Subjects with respiratory symptoms had poorer HRQoL; including subjects without a diagnosis of asthma or COPD. These findings suggest that respiratory symptoms in the absence of a medical diagnosis of asthma or COPD are by no means trivial, and that clarifying the nature and natural history of respiratory symptoms is a relevant challenge. Several community studies have estimated the prevalence of common respiratory symptoms like cough, dyspnoea, and wheeze in adults. Although the prevalence varies to a large degree between studies and geographical areas, respiratory symptoms are quite common. The prevalences of respiratory symptoms in the European Community Respiratory Health Study (ECRHS) varied from one percent to 35%. In fact, two studies have reported that more than half of the adult population suffers from one or more respiratory symptoms. Respiratory symptoms are important markers of the risk of having or developing disease. Respiratory symptoms have been shown to be predictors for lung function decline, asthma, and even all-cause mortality in a general population study . In patients with a known diagnosis of asthma or chronic obstructive pulmonary disease (COPD), respiratory symptoms are important determinants of reduced health related quality of life (HRQoL). The prevalence of respiratory symptoms exceeds the combined prevalences of asthma and COPD, and both asthma and COPD are frequently undiagnosed diseases. Thus, the high prevalence of respiratory symptoms may mirror undiagnosed and untreated disease.The common occurrence of respiratory symptoms calls for attention to how these symptoms affect health also in subjects with no diagnosis of obstructive airways disease. Impaired HRQoL in the presence of respiratory symptoms have been found in two population-based studies 619, but no study of respiratory symptoms and HRQoL have separate analyses for subjects with and without asthma and COPD, and no study provide information about extensive objective measurements of respiratory health. The ECRHS is a randomly sampled, multi-cultural, population based cohort study. The ECRHS included measurements of atopy, bronchial hyperresponsiveness (BHR), and lung function, and offers a unique opportunity to investigate how respiratory symptoms affect HRQoL among subjects both with and without obstructive lung disease.In the present paper we aimed to: 1) Describe the relationship between respiratory symptoms and HRQoL in an international adult general population and: 2) To assess whether this relationship varied with presence of asthma and/or COPD, or presence of objective functional markers like atopy and BHR.
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Nielsen R, Johannessen A, Bakke PS, Askildsen JE, Omenaas ER, Gulsvik A. Aspects of healthcare utilisation in self-reported obstructive lung disease. CLINICAL RESPIRATORY JOURNAL 2010; 3:34-41. [PMID: 20298370 DOI: 10.1111/j.1752-699x.2008.00106.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Utilisation of healthcare resources because of pulmonary diseases have previously been presented according to lung function or symptom severity. We aimed to compare the associations of symptoms and lung function to healthcare and social service utilisation in subjects with self-reported obstructive lung diseases (OLDs) (asthma, chronic obstructive pulmonary disease, chronic bronchitis, emphysema). MATERIALS AND METHODS Of 2819 participants aged 27-82 years in the Hordaland County Respiratory Health Survey, 200 subjects (7.1%) self-reported OLD. They answered 13 questions on respiratory symptoms and 5 questions on use of healthcare and social services. Altogether, 161 participants (81%) completed post-bronchodilation spirometry. RESULTS Use of anti-asthmatic drugs, regular physician's appointment, sick leave payment for the last 12 months, hospital admission for the last 12 months and disability pension were reported by 68%, 63%, 18%, 8% and 7% of those with self-reported OLD, respectively. Twenty per cent of subjects with self-reported OLD had not received any healthcare or social services. In adjusted multivariate logistic regression analyses, increase in the respiratory symptom score was significantly associated with more healthcare and social services. Lower forced expiratory volume in 1 s in % predicted, however, was not significantly associated with more use of healthcare and social services. CONCLUSION The majority (80%) of subjects in a general population with self-reported OLD received healthcare services. The utilisation of healthcare and social services was strongly associated to the burden of respiratory symptoms, and, to a lesser degree, to the level and pattern of lung function.
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Affiliation(s)
- Rune Nielsen
- Institute of Medicine, University of Bergen, Haukeland University Hospital, Bergen, Norway.
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Frostad A. Association between respiratory symptom score and 30-year cause-specific mortality and lung cancer incidence. CLINICAL RESPIRATORY JOURNAL 2010; 2 Suppl 1:53-8. [PMID: 20298350 DOI: 10.1111/j.1752-699x.2008.00084.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Respiratory symptoms are among the main reasons why patients make contact with healthcare professionals and they are associated with several diseases. OBJECTIVE The aim of this study was to investigate the relationship between respiratory symptoms reported at one time and 30 years cause-specific mortality and incidence of lung cancer in an urban Norwegian population. MATERIALS AND METHODS A total of 19 998 men and women, aged 15-70 years, were in 1972 selected from the general population of Oslo. They received a postal respiratory questionnaire (response rate 89%). All were followed for 30 years for end-point mortality and for lung cancer. The association between respiratory symptoms, given as a symptom load, and end point of interest were investigated separately for men and women by multivariable analyses, with adjustment for age, occupational exposure to air pollution and smoking habits. RESULTS A total of 6710 individuals died during follow-up. Obstructive lung diseases (OLDs) and pneumonia accounted for 250 and 293 of the total deaths, respectively. Ischaemic heart disease (IHD) accounted for 1572; stroke accounted for 653 of all deaths. Lung cancer developed in 352 persons during follow-up. The adjusted hazard ratio for mortality from OLD and pneumonia, IHD and stroke increased in a dose-response manner with symptom score, more strongly for OLD and IHD than for pneumonia and stroke. CONCLUSIONS Respiratory symptoms were positively associated with mortality from OLD, pneumonia, IHD and stroke, and incidence of lung cancer. This association was significant for mortality from OLD and IHD.
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Affiliation(s)
- A Frostad
- Department of Clinical and Registry-based Research, Cancer Registry of Norway, Oslo, Norway.
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Mészáros D, Dharmage SC, Matheson MC, Venn A, Wharton CL, Johns DP, Abramson MJ, Giles GG, Hopper JL, Walters EH. Poor lung function and tonsillectomy in childhood are associated with mortality from age 18 to 44. Respir Med 2010; 104:808-15. [PMID: 20079616 DOI: 10.1016/j.rmed.2009.12.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2009] [Revised: 09/28/2009] [Accepted: 12/04/2009] [Indexed: 11/27/2022]
Abstract
BACKGROUND The aim of this analysis was to examine associations between lung health in childhood and mortality between ages 18 and 44 years in the Tasmanian Longitudinal Health Study (TAHS). METHODS The 1961 Tasmanian birth cohort who attended school in 1968 (n=8583) were linked to the Australian National Death Index (NDI) to identify deaths. Additional deaths were notified by families through a 37 year follow-up postal questionnaire. Information on lung health at age 7 years and on potential confounders was obtained from the original 1968 TAHS survey and school medical records. Cox proportional hazards modelling was used to assess determinants of mortality. RESULTS A total of 264 (3%) deaths were identified. The principal causes of death were external injury (56.1%, n=97) and cancer (17.9%, n=31). Males were more likely than females to have died (p=<0.1). Only two (1.1%) participants had died from respiratory conditions. Having an FEV(1)<80% predicted at 7 years of age was associated with a 2-fold increased incidence of death. Tonsillectomy before age 7 years was associated with a 1.5-fold increase in mortality (p=0.05); being male with a 3.6-fold increase in mortality (p=0.0001); and repeated chest illnesses at age 7 years causing >30 days confinement in the last year, was associated with a 2.2-fold increase in mortality (p=0.03). CONCLUSIONS Childhood lung health appears to be associated with increased mortality in adulthood, perhaps by affecting the ability to survive trauma, major illnesses and other physical stresses.
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Affiliation(s)
- D Mészáros
- Menzies Research Institute, University of Tasmania, Private Bag 23, Hobart, Tasmania 7001, Australia
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Difficultés de l’évaluation de la dyspnée et de la fonction respiratoire en médecine générale. Presse Med 2009; 38:1041-8. [DOI: 10.1016/j.lpm.2009.01.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2008] [Accepted: 01/15/2009] [Indexed: 11/21/2022] Open
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Longitudinal analysis of respiratory symptoms in population studies with a focus on dyspnea in marine transportation workers. Int Arch Occup Environ Health 2009; 82:1097-105. [DOI: 10.1007/s00420-009-0412-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2008] [Accepted: 02/22/2009] [Indexed: 10/21/2022]
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Ren C, Tong S. Health effects of ambient air pollution--recent research development and contemporary methodological challenges. Environ Health 2008; 7:56. [PMID: 18990231 PMCID: PMC2613877 DOI: 10.1186/1476-069x-7-56] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2008] [Accepted: 11/06/2008] [Indexed: 05/26/2023]
Abstract
Exposure to high levels of air pollution can cause a variety of adverse health outcomes. Air quality in developed countries has been generally improved over the last three decades. However, many recent epidemiological studies have consistently shown positive associations between low-level exposure to air pollution and health outcomes. Thus, adverse health effects of air pollution, even at relatively low levels, remain a public concern. This paper aims to provide an overview of recent research development and contemporary methodological challenges in this field and to identify future research directions for air pollution epidemiological studies.
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Affiliation(s)
- Cizao Ren
- School of Public Health and Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, QLD 4059, Australia
- Harvard School of Public Health, Exposure, Epidemiology and Risk Program, Landmark Center West, Suite 415, 401 Park Dr, Boston, MA 02215, USA
| | - Shilu Tong
- School of Public Health and Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, QLD 4059, Australia
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