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Background: The World Health Organization and the European Commission predict increased use of health technologies in the future care for patients in Europe. Studies have shown that services based on telehealth, which includes components of education, as well as rehabilitation initiatives can support the self-management of individuals living with COPD. This raises an interest in how virtual and in-person interactions and roles can best be organized in a way that suits people living with COPD in relation to their treatment and rehabilitation., Objective: This study aims to investigate how individuals living with COPD experience different combinations of virtual and in-person care, to help us better understand what aspects are valued and how to best combine elements of these services in future care., Methods: Two rounds of semistructured interviews were conducted with 13 and 4 informants, respectively. The individuals were all recruited in relation to a research project led by the telehealth initiative Epital Health. The first round of interviews included 11 informants, as 2 dropped out. Of these, 7 received the telemedicine service provided by Epital Health, 3 participated in a 12-week COPD program provided by their respective municipality, and 1 did not receive any supplementary service besides the usual care. In the second round, which included 4 informants, all had at one point received the telemedicine service and participated in a municipality-based rehabilitation program. A content analysis of the interviews was performed based on deductive coding with 4 categories, namely, (1) Self-management, (2) Health-related support, (3) Digital context, and (4) Well-being., Results: Medical and emotional support from health care professionals is a key aspect of care for individuals with COPD. Acute treatment with at-home medicine, monitoring one's own condition through technology, and having easy access and close contact with health care professionals familiar to them can promote self-management and well-being, as well as provide a feeling of security. Having regular meetings with a network of peers and health care professionals provides education, support, and tools to cope with the condition and improve own health. Furthermore, group-based activity motivates and increases the activity level of the individuals. Continued offers of services are desired as many experience a decrease in achieved benefits after the service ends. More emphasis is placed on the importance of the therapeutic and medical elements of care compared with factors such as technology. The identified barriers related to optimal utilization of the virtual service were related to differentiation in levels of contact depending on disease severity and skills related to the practical use of equipment., Conclusions: A combination of virtual and in-person services providing lasting medical and social support is suggested for the future. This should build upon the preferences and needs of individuals living with COPD and support relationships to caregivers and peers., (©Thea Krag, Emma Højgaard Jørgensen, Klaus Phanareth, Lars Kayser. Originally published in JMIR Rehabilitation and Assistive Technology (https://rehab.jmir.org), 14.08.2023.)

Background: Chronic obstructive pulmonary disease (COPD) is the fourth leading cause of death and is characterized by a progressive loss of pulmonary function over time with intermittent episodes of exacerbations. Rapid and proactive interventions may reduce the burden of the condition for the patients. Telehealth solutions involving self-tracking of vital parameters such as pulmonary function, oxygen saturation, heart rate, and temperature with synchronous communication of health data may become a powerful solution as they enable health care professionals to react with a proactive and adequate response. We have taken this idea to the next level in the Epital Care Model and organized a person-centered technology-assisted ecosystem to provide health services to COPD patients., Objective: The objective is to reveal the nature of COPD by combining technology with a person-centered design aimed to benefit from interactions based on patient-reported outcome data and to assess the needed kind of contacts to best treat exacerbations. We wanted to know the following: (1) What are the incidences of mild, moderate, and severe exacerbations in a mixed population of COPD patients? (2) What are the courses of mild, moderate, and severe exacerbations? And (3) How is the activity and pattern of contacts with health professionals related to the participant conditions?, Methods: Participants were recruited by convenience sampling from November 2013 to December 2015. The participants' sex, age, forced expiratory volume during the first second, pulse rate, and oxygen saturation were registered at entry. During the study, we registered number of days, number of exacerbations, and number of contact notes coded into care and treatment notes. Each participant was classified according to GOLD I-IV and risk factor group A-D. Participants reported their clinical status using a tablet by answering 4 questions and sending 3 semiautomated measurements., Results: Of the 87 participants, 11 were in risk factor group A, 24 in B, 13 in C, and 39 in D. The number of observed days was 31,801 days with 12,470 measurements, 1397 care notes, and 1704 treatment notes. A total of 254 exacerbations were treated and only 18 caused hospitalization. Those in risk factor group D had the highest number of hospitalizations (16), exacerbations (151), and contacts (1910). The initial contacts during the first month declined within 3 months to one-third for care contacts and one-half for treatment contacts and reached a plateau after 4 months., Conclusions: The majority of COPD patients in risk factor group D can be managed virtually, and only 13% of those with severe exacerbations required hospitalization. Contact to the health care professionals decreases markedly within the first months after enrollment. These results provide a new and detailed insight into the course of COPD. We propose a resilience index for virtual clinical management making it easier to compare results across settings., (©Klaus Phanareth, Astrid Laura Dam, Martin A B C Hansen, Signe Lindskrog, Søren Vingtoft, Lars Kayser. Originally published in the Journal of Medical Internet Research (https://www.jmir.org), 19.10.2021.)

Background: Individuals with chronic obstructive pulmonary disease (COPD) live with the burden of a progressive life-threatening condition that is often accompanied by anxiety and depression. The severity of the condition is usually considered from a clinical perspective and characterized according to the Global Initiative for Chronic Obstructive Lung Disease (GOLD) classification of severity (1-4) and a risk assessment (A through D) that focuses on the patient's symptoms and number of exacerbations, but information about perceived health or ability to manage the condition are rarely included., Objective: We evaluated 3 patient-reported outcome measurements (PROMs) to examine how these can be used to report on individuals with COPD who were supported by a digitally assisted intervention that aims to increase the patient's management of their condition to improve their well-being., Methods: A total of 93 individuals with COPD were enrolled. At baseline and after 6 and 12 months, we measured self-reported self-management (Health Education Impact Questionnaire, heiQ) and health literacy (Health Literacy Questionnaire, HLQ), and physical and mental health (Short Form-36, SF-36) PROMs were collected. The scores of the 19 PROM dimensions were related to COPD severity, that is, GOLD risk assessment, pulmonary function at entry, and number of exacerbations of a period up to 12 months. The initial PROM scores were also compared with pulmonary function, exacerbations, and GOLD risk assessment to predict the number of contacts within the first 90 days., Results: At baseline, 2 dimensions from heiQ and SF-36 Physical health differed significantly between GOLD risk factor groups, indicating more distress and poorer attitudes and health status with increasing severity (GOLD risk assessment). Pulmonary function (FEV1) was negatively associated with the severity of the condition. After 6 months, we observed an increase in heiQ6 (skill and technique acquisition) and a reduction in emotional distress. The latter effect persisted after 12 months, where heiQ4 (self-monitoring and insight) also increased. HLQ3 (actively managing my health) decreased after 6 and 12 months. The number of exacerbations and the GOLD risk factor assessment predicted the number of contacts during the first 90 days. Furthermore, 2 of the PROMS heiQ6 (skill and technique acquisition) and HLQ8 (ability to find good health information) evaluated at baseline were associated with the number of contacts within the first 90 after enrollment. The pulmonary function was not associated with the number of contacts., Conclusions: Our data suggest that selected dimensions from HLQ, heiQ, and SF-36 can be used as PROMs in relation to COPD to provide researchers and clinicians with greater insight into how this condition affects individuals' ability to understand and manage their condition and perception of their physical and mental health. The PROMs add to the information obtained with the clinical characteristics including the GOLD risk factor assessment., International Registered Report Identifier (irrid): RR2-10.2196/resprot.6506., (©Signe Lindskrog, Karl Bang Christensen, Richard H Osborne, Søren Vingtoft, Klaus Phanareth, Lars Kayser. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 02.06.2019.)

Background: There is worldwide recognition that the future provision of health care requires a reorganization of provision of care, with increased empowerment and engagement of patients, along with skilled health professionals delivering services that are coordinated across sectors and organizations that provide health care. Technology may be a way to enable the creation of a coherent, cocreative, person-centered method to provide health care for individuals with one or more long-term conditions (LTCs). It remains to be determined how a new care model can be introduced that supports the intentions of the World Health Organization (WHO) to have integrated people-centered care., Objective: To design, pilot, and test feasibility of a model of health care for people with LTCs based on a cocreative, iterative, and stepwise process in a way that recognizes the need for person-centered care, and embraces the use of digital technology., Methods: The overall research method was inspired by action research and used an agile, iterative approach. In 2012, a living lab was established in a Danish municipality which allowed for the freedom of redesigning health care processes. As the first step, a wide group of stakeholders was gathered to create a layout for the reorganization of services and development of technology, based on established principles for innovative management of people with chronic conditions. The next three steps were (1) a proof of concept in 2012, (2) a pilot study, and (3) a feasibility study from 2013 to 2015, in which a total of 93 chronic obstructive pulmonary disease (COPD) patients were enrolled. Citizens were provided a tablet-based solution for remote follow-up and communication purposes, and access to a 24/7 response and coordination center that coordinated both virtual and face-to-face support for COPD management. In step five the initial model was extended with elements that support continuity of care. Beginning in the autumn of 2013, 1102 frail elderly individuals were included and offered two additional services: an outgoing acute medical team and a local subacute bed function., Results: Based on the findings from the iterative process, and evolving technology and workflow solutions, we propose a robust and feasible model that can provide a framework for developing solutions to support an active life with one or more LTCs. The resulting Epital Care Model (ECM) consists of six stages, and serves as a template for how a digitally-enhanced health service can be provided based on patients' medical needs. The model is designed to be a proactive, preventive, and monitoring health care system that involves individuals in the management of their own health conditions., Conclusions: The ECM is in accordance with WHO's framework for integrated people-centered health services, and may serve as a framework for the development of new technologies and provide a template for future reorganization., Competing Interests: Conflicts of Interest: Dr Klaus Phanareth and Dr Søren Vingtoft now own a company, Epital Health, which is based on the ECM insights regarding the implementation of the ECM. Mister Jørgen Svenstrup is the owner of a company, EmpowerMind, that provides coaching, including health coaching; this company has provided free health coaching for this project., (©Klaus Phanareth, Søren Vingtoft, Anders Skovbo Christensen, Jakob Sylvest Nielsen, Jørgen Svenstrup, Gro Karine Rosvold Berntsen, Stanton Peter Newman, Lars Kayser. Originally published in JMIR Research Protocols (http://www.researchprotocols.org), 16.01.2017.)

Introduction: The urokinase-type plasminogen activator receptor (uPAR) and its ligand (suPAR) are involved in numerous physiological and pathological pathways. Previous studies have shown that an elevated plasma suPAR level is associated with disease severity and mortality. The aim of this prospective observational study was to determine if the suPAR level was associated with readmission and mortality in the acute medical setting., Methods: Plasma suPAR levels were measured in 1,036 patients at admission. Follow-up ranged 3-10 months. Cox proportional hazards model was used to assess the relative contribution of different risk factors to mortality and readmission. The ANOVA test and Pearson's chi-squared test were used to compare suPAR tertile level with various variables., Results: The highest suPAR tertile level was significantly associated with mortality within 30 days after discharge, with a 6.66 hazard ratio (HR). Similar associations were found with readmission within the maximum observation period (HR = 2.26) and within 30 days (HR = 2.08), although the latter became insignificant when covariates were included., Conclusions: This study confirms previous findings of increased mortality and adds the finding that increased long-term readmission rates are associated with elevated suPAR levels. The present data do, however, not indicate that suPAR may serve as an independent biomarker for increased risk of short-term readmission in the acute medical setting., Funding: This study was funded by a grant from ViroGates A/S, the company that produces the suPARnostic assay., Trial Registration: No: H-B-2009-075.

Background: Telehealth interventions for patients with chronic obstructive pulmonary disease (COPD) have focused primarily on stable outpatients. Telehealth designed to handle the acute exacerbation that normally requires hospitalization could also be of interest. The aim of this study was to compare the effect of home-based telehealth hospitalization with conventional hospitalization for exacerbation in severe COPD., Materials and Methods: A two-center, noninferiority, randomized, controlled effectiveness trial was conducted between June 2010 and December 2011. Patients with severe COPD admitted because of exacerbation were randomized 1:1 either to home-based telehealth hospitalization or to continue standard treatment and care at the hospital. The primary outcome was treatment failure defined as re-admission due to exacerbation in COPD within 30 days after initial discharge. The noninferiority margin was set at 20% of the control group's risk of re-admission. Secondary outcomes were mortality, need for manual or mechanical ventilation or noninvasive ventilation, length of hospitalization, physiological parameters, health-related quality of life, user satisfaction, healthcare costs, and adverse events., Results: In total, 57 patients were randomized: 29 participants in the telehealth group and 28 participants in the control group. Testing the incidence of re-admission within 30 days after discharge could not confirm noninferiority (lower 95% confidence limit [CL], -24.8%; p=0.35). Results were also nonsignificant at 90 days (lower 95% CL, -16.2%; p=0.33) and 180 days (lower 95% CL, -16.6%; p =0.33) after discharge. Superiority testing on secondary outcomes showed nonsignificant differences between groups. Healthcare costs have not yet been evaluated., Conclusions: Whether home-based telehealth hospitalization is noninferior to conventional hospitalization requires further investigation. The results indicate that a subgroup of patients with severe COPD can be treated for acute exacerbation at home using telehealth, without the physical presence of health professionals and with a proper organizational "back-up."

Aims and Objectives: To investigate how virtual admission during acute exacerbation influences self-efficacy in patients with chronic obstructive pulmonary disease, compared with conventional hospital admission., Background: Telemedicine solutions have been highlighted as a possible way to increase self-efficacy in patients with chronic diseases, such as chronic obstructive pulmonary disease. However, little is known about how telemedicine-based virtual admission as a replacement of hospital admission during acute exacerbation affects chronic obstructive pulmonary disease patients' self-efficacy., Design: This study was a nonblinded, randomised clinical multicentre trial. The study was a substudy to The Virtual Hospital, investigating the feasibility and safety of telemedicine-based treatment at home for patients with acute exacerbation of chronic obstructive pulmonary disease., Methods: Participants were consecutively randomised to virtual admission or conventional hospital admission. Data from 50 patients were analysed. Self-efficacy was assessed at baseline, three days after discharge, and also six weeks and three months after discharge, using the Danish version of 'The chronic obstructive pulmonary disease self-efficacy scale'., Results: Intergroup comparison showed no significant differences between the two groups at baseline, three days after discharge, six weeks after discharge or three months after discharge. Furthermore, intragroup comparison did not reveal significant differences in the chronic obstructive pulmonary disease self-efficacy scale mean sum score within the two groups., Conclusions: The results of the study suggest that there is no difference between self-efficacy in chronic obstructive pulmonary disease patients undergoing virtual admission, compared with conventional hospital admission. However, the anticipated sample size could not be reached, which prompts caution regarding interpretation of the findings., Relevance to Clinical Practice: This study provides new insight into how virtual admission affects chronic obstructive pulmonary disease patients' self-efficacy. Clinicians should consider the timing, duration and the content in the design of telemedical interventions directed at improving chronic obstructive pulmonary disease patients' self-efficacy, as telemedicine solutions alone may not be sufficient to enhance self-efficacy., (© 2014 John Wiley & Sons Ltd.)

Objectives: Telemedicine is gaining ground in the treatment of patients with chronic obstructive pulmonary disease (COPD). Because telemedicine often requires both participation and engagement of the patients, it is important to take differences in cognitive ability into account, as there is evidence that cognitive dysfunction may be a limitation in patients with severe COPD. The aim of this study was to investigate whether cognitive performance is better after telemedicine-based treatment than after conventional hospitalization in patients with severe COPD and a mild to moderate exacerbation., Materials and Methods: This randomized study was a substudy of the "Virtual Hospital," a multicenter, randomized controlled trial. The primary outcome in this substudy was cognitive function, evaluated 3 days and 6 weeks after discharge using a neuropsychological test battery comprising four tests and seven variables., Results: We included 44 patients consecutively. Baseline characteristics were as follows: mean age, 70 (standard deviation [SD] 10) years; mean forced expiratory volume in 1 s, 1.0 (SD 0.55) L (42% of predicted); mean hemoglobin oxygen saturation, 95 (SD 2.0) percent; and mean Mini Mental State Examination score, 27.5 (SD 1.6) points. The performance in all seven neuropsychological test variables tended to be better in the group allocated to virtual admission 3 days and 6 weeks after discharge, but the difference was not significant after Bonferroni's correction for multiple comparisons., Conclusions: There were no significant differences in cognitive performance between the telemedicine-based group and the conventional hospital group. Patients with severe COPD suffering from mild to moderate exacerbations were able to manage the telemedicine-based treatment despite the reduced cognitive function often seen in COPD patients.

Aims and Objectives: To describe what characterises chronic obstructive pulmonary disease patients' coping of physical, emotional and social problems before, during and after virtual admission, in interaction with health professionals and relatives., Background: Telemedicine for patients with chronic obstructive pulmonary disease is gaining ground. However, virtual admission using telemedicine in the patients' home as a replacement of hospital admission has received little attention. Furthermore, little is known about how telemedicine affects chronic obstructive pulmonary disease patients' coping., Design: Grounded Theory study using semi-structured interviews., Methods: The study was a part of The Virtual Hospital study, exploring virtual admission for patients with acute exacerbation of chronic obstructive pulmonary disease. During virtual admission, patients had access to medical equipment consisting of monitoring devices, medication, nebuliser and a touch screen with built-in videoconference system. Nine participants were interviewed after virtual admission. Open coding, axial coding and selective coding, using constant comparative analysis, were conducted., Results: A substantive Grounded Theory was developed, containing the core category - struggling to be in control of life with chronic obstructive pulmonary disease - related to four categories: complete powerlessness, dependency, pursuit of regaining autonomy and efforts to remain in control of problems related to chronic obstructive pulmonary disease. Virtual admission supported participants' autonomy. The involvement of health professionals was reduced as participants used the medical equipment to cope with disease-related problems. Participants' coping was closely linked to the presence of the equipment, making it difficult for them to apply their experiences after discharge from virtual admission., Conclusions: Virtual admission may support chronic obstructive pulmonary disease patients' coping of physical and emotional problems. However, coping experiences made during virtual admission may not be directly applicable outside a telemedical setting., Relevance to Clinical Practice: Telemedicine may result in different roles for patients, relatives and health professionals. Clinicians should consider how they can support chronic obstructive pulmonary disease patients' coping during telemedical interventions, focusing on how to ensure a sustained improvement that patients can benefit from outside the telemedical setting., (© 2013 John Wiley & Sons Ltd.)

We investigated self-reported outcome in patients with COPD and exacerbation. Consecutive patients were randomised to an intervention group with home telemedicine and a control group who had conventional hospital admission. We assessed Health-Related Quality of Life (HRQoL) using the St George's Respiratory Questionnaire, daily activity using Instrumental Activity of Daily Living, anxiety and depression using the Hospital Anxiety and Depression Scale, and self-assessed cognitive decline using Subjective Cognitive Functioning. Data were collected at 3 days, 6 weeks and 3 months after discharge. There were 22 patients in each group. Their baseline characteristics were similar: a mean age of 70 years, FEV 1 42% predicted and oxygen saturation 95%. After 6 weeks, FEV 1 had improved in both groups, to 1.2 L in the intervention group and 1.0 L in the control group. Oxygen saturation had improved in the intervention group from 94% to 96%. Regarding HRQoL, there was a non-significant (P = 0.05) improvement in the symptom score in favour of the control group, but the improvement was not maintained after three months. However, there were no significant differences in self-reported outcomes in COPD patients with exacerbation treated at home via telemedicine versus conventionally in hospital., (© SAGE Publications Ltd, 2013.)

The aim of the study was to translate 'The COPD self-efficacy scale' (CSES) into Danish and to evaluate the psychometric properties of the Danish version (CSES-DK). CSES enables assessment of self-efficacy in individuals with chronic obstructive pulmonary disease (COPD). The scale consists of 34 items, describing situations which may cause dyspnoea in patients with COPD. The CSES was translated into Danish using a standard forward-backward translation procedure. To estimate the reliability, measurements of internal consistency and repeatability were applied. The validity of the Danish version was evaluated by examining the associations between the CSES-DK score and socio-demographic variables (age, gender, education, disease severity and self-rated health). Factor analysis was conducted to compare the internal structure of the Danish version and the American source version. The study included 151 patients with COPD, recruited from three outpatient clinics. Estimates of reliability were in accordance with the original version of CSES (Cronbach's α = 0.97, test-retest r = 0.82, p < 0.001). Significant correlations were obtained between the CSES-DK total score and vocational training and education (r = 0.27, p = 0.001), disease severity (r = -0.27, p = 0.001) and self-rated health (r = -0.41, p < 0.001), indicating construct validity. Five factors were extracted from both versions of CSES. However, in the CSES-DK, only one factor concerns emotions, whereas two factors describing emotions were obtained for the original scale. Furthermore, important discrepancies exist with respect to the direction of the scoring of CSES. In some studies, a high score indicates high self-efficacy, whereas it indicates low self-efficacy in other studies, which complicates the comparison of studies. The Danish version of CSES showed acceptable measurements of reliability and validity. Potential limitations of the scale were identified, and discrepancies exist between the factor structure of the original and Danish version. Consequently, more studies of the factor structure should be conducted on both the original CSES and the translated versions of the instrument., (© 2012 The Authors. Scandinavian Journal of Caring Sciences © 2012 Nordic College of Caring Science.)

Background: Substantial healthcare resources are spent on chronic obstructive pulmonary disease (COPD). In addition, the involvement of patients in monitoring and treatment of their condition has been suggested. However, it is important to maintain a view of self-care that takes differences in cognitive ability into account. The aim of this study was to determine the occurrence and severity of cognitive dysfunction in COPD patients, and to assess the association between severity of COPD and the level of cognitive function., Methods: We conducted a systematic review, and a search in the following databases: Medline, PsychINFO, Cochrane Library, EMBASE, CINAHL, and SweMed up to July 2010. The articles were included if participants were patients with COPD, relevant outcome was cognitive function investigated by a neuropsychological test battery, and the severity of COPD had been assessed., Results: Fifteen studies were included, involving 655 COPD patients and 394 controls. Cognitive function was impaired in COPD patients as compared to healthy controls, but the level of functioning was better than in patients with Alzheimer's disease. There was a significant association between severity of COPD, as measured by lung function and blood gases, and cognitive dysfunction, but only in patients with severe COPD., Conclusions: Cognitive impairment can be detected in severe COPD patients, but the clinical relevance of the cognitive dysfunction is not yet known. Future studies should concentrate on the consequences of cognitive dysfunction for daily living in these patients, and solutions involving a high degree of self-care might require special support., (Copyright © 2012 Elsevier Ltd. All rights reserved.)

Background: Experience from other fields of internal medicine shows that Internet-based technology can be used to monitor various diseases. The new technology handles complex calculation programs easily, and it is a unique way of communicating. These advantages might be used in optimizing the treatment for asthmatic subjects because undertreatment is a common problem found in European asthmatic subjects., Objective: We sought to investigate the outcome of monitoring and treatment using a physician-managed online interactive asthma monitoring tool and to assess whether the outcome differs from that of monitoring and treatment in an outpatient respiratory clinic or in primary care., Methods: Three hundred asthmatic subjects were randomized to 3 parallel groups in a 6-month prospective study: (1) Internet-based monitoring (n = 100); (2) specialist monitoring (n = 100); and (3) general practitioner (GP) monitoring (n = 100). All the patients were examined on entry into the study and after 6 months of treatment., Results: The treatment and monitoring with the Internet-based management tool lead to significantly better improvement in the Internet group than in the other 2 groups regarding asthma symptoms (Internet vs specialist: odds ratio of 2.64, P = .002; Internet vs GP: odds ratio of 3.26; P < .001), quality of life (Internet vs specialist: odds ratio of 2.21, P = .03; Internet vs GP: odds ratio of 2.10, P = .04), lung function (Internet vs specialist: odds ratio of 3.26, P = .002; Internet vs GP: odds ratio of 4.86, P < .001), and airway responsiveness (Internet vs GP: odds ratio of 3.06, P = .02)., Conclusion: When physicians and patients used an interactive Internet-based asthma monitoring tool, better asthma control was achieved.

Lung function is a strong predictor of overall mortality in asthma and chronic obstructive pulmonary disease (COPD). FEV1 is considered to be the "gold standard," whereas peak expiratory flow (PEF) is mostly used in absence of FEV1 measurements. We compared the predictive power of PEF and FEV1, measured after maximal bronchodilation, which included a short course of oral corticosteroids. The study population comprised 491 asthmatics and 1,095 subjects with COPD. Pulmonary function tests were performed between 1983 and 1988, and survival data were obtained by September 1997, when 127 asthmatics and 723 subjects with COPD had died. Predictors of survival were examined by Cox proportional hazards analyses. After controlling for age, smoking, sex, and body mass index, we found best PEF to be at least equal to best FEV1 as predictor of overall mortality in subjects with COPD. The predictive power of best PEF was in part maintained after controlling for best FEV1. In asthma, best FEV1 seemed to be a better predictor of mortality than best PEF. Despite close correlation to FEV1, PEF apparently provides independent prognostic information in patients with COPD. This may be due to PEF and FEV1 reflecting different components of COPD, i.e., chronic bronchitis, small airways disease, and emphysema. Furthermore, extrapulmonary components such as muscle mass and general "vigour" probably affect PEF to a greater extent than they affect FEV1.

The importance of reversible airflow obstruction to the prognosis of asthma and chronic obstructive pulmonary disease (COPD) is not clear. We tested the hypothesis that reversibility to corticosteroid and bronchodilator is not an independent predictor of prognosis, but merely reflects a component of the maximal attainable lung function, which is the best spirometric predictor of survival. During a 6-yr period (1983-1988), 1,586 subjects with asthma or COPD underwent standardized bronchodilator and corticosteroid reversibility tests at a chest clinic in Copenhagen. The vital status was obtained by September 1997. The relationship between mortality and age, gender, smoking, FEV1, and reversibilities was examined by Cox proportional hazards analyses. Of 1,586 subjects, 850 had died before September 1997. Age, smoking, and FEV1 were significant predictors of mortality. After controlling for baseline FEV1, bronchodilator and corticosteroid reversibility were significantly associated with better survival. However, after controlling for best FEV1 all reversibilities became nonsignificant and nonpredictive. The combined use of corticosteroid and bronchodilator reversibility in survival analyses is a novel approach, and we have shown that both contribute to survival prediction to the extent that they modify FEV1. However, reversibility per se does not influence survival in subjects with moderate to severe asthma or COPD.

Unlabelled: A telephone survey was conducted of all the 71 Danish hospitals with the capacity to receive acutely ill medical patients. The purpose was to register treatment regimes used in acute asthma and exacerbations in chronic obstructive pulmonary disease (COPD). The house officer on duty was interviewed and questioned about the use of nebulizers, oxygen therapy, bronchodilators, steroids, theophyllins and monitoring of the patient's condition. The physician survey was supplemented by a smaller survey among emergency room nurses about nebulizing systems. The answers showed inadequate knowledge of nebulizing systems. There was a noticeable variation in the dosing of oxygen and in the dosing of bronchodilators and steroids. beta 2-agonist treatment by nebulizer differed with a factor 14 in dose. The majority of the physicians had no specific parameters for monitoring severity of disease., Conclusion: There is a need for improvement of the knowledge of nebulizing systems, including specific knowledge of the appropriate use of propellant gasflow and time of nebulizing for optimum performance of the used nebulizer. Divergent answers from the nurses and the physicians show the need for interdisciplinary instruction. The noticeable variation in treatment in this Danish survey displays a need for quality control in terms of concise guidelines for medical therapy in acute exacerbations of asthma and COPD and guidelines for monitoring of the response to the treatment. A suggestion for a treatment regime is proposed.