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      Frequency and risk factors of COPD exacerbations and hospitalizations: a nationwide study in Greece (Greek Obstructive Lung Disease Epidemiology and health ecoNomics: GOLDEN study)

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          Abstract

          Background

          COPD exacerbations and hospitalizations have been associated with poor prognosis for the COPD patient.

          Objective

          To evaluate the frequency and risk factors of COPD exacerbations, hospitalizations, and admissions to intensive care units (ICUs) in Greece by a nationwide cross-sectional study.

          Materials and methods

          A nationwide observational, multicenter, cross-sectional study was conducted in the clinical practice setting of respiratory medicine physicians over a 6 month-period (October 2010 to March 2011). A total of 6,125 COPD patients were recruited by 199 respiratory physicians.

          Results

          Participants had a median age of 68.0 years, 71.3% were males, and 71.8% suffered from comorbidities. The median disease duration was 10.0 years. Of the patients, 45.3% were classified as having GOLD (Global initiative for chronic Obstructive Lung Disease) stage III or IV COPD. Patients with four or more comorbidities had 78.5% and threefold-higher than expected number of exacerbations and hospitalizations, respectively, as well as fivefold-higher risk of admission to the ICU compared to those with no comorbidities. Obese patients had 6.2% fewer expected exacerbations compared to those with a normal body mass index. Patients with GOLD stage IV had 74.5% and fivefold-higher expected number of exacerbations and hospitalizations, respectively, and nearly threefold-higher risk of admission to the ICU compared to stage I patients. An additional risk factor for exacerbations and hospitalizations was low compliance with treatment: 45% of patients reported forgetting to take their medication, and 81% reported a preference for a treatment with a lower dosing frequency.

          Conclusion

          Comorbidities, disease severity, and compliance with treatment were identified as the most notable risk factors for exacerbations, hospitalizations, and ICU admissions. The results point to the need for a multifactorial approach for the COPD patient and for the development of strategies that can increase patient compliance with treatment.

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          Most cited references 23

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          Global strategy for the diagnosis, management and prevention of COPD

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            Epidemiology of COPD.

            Chronic obstructive pulmonary disease (COPD) is responsible for early mortality, high death rates and significant cost to health systems. The projection for 2020 indicates that COPD will be the third leading cause of death worldwide (from sixth in 1990) and fifth leading cause of years lost through early mortality or handicap (disability-adjusted life years) (12th in 1990). Active smoking remains the main risk factor, but other factors are becoming better known, such as occupational factors, infections and the role of air pollution. Prevalence of COPD varies according to country, age and sex. This disease is also associated with significant comorbidities. COPD is a disorder that includes various phenotypes, the continuum of which remains under debate. The major challenge in the coming years will be to prevent onset of smoking along with early detection of the disease in the general population.
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              Comorbidity and mortality in COPD-related hospitalizations in the United States, 1979 to 2001.

              COPD is one of the leading causes of mortality and morbidity in the United States, yet little is known about the prevalence of comorbid conditions and mortality in hospitalized patients with COPD. From the National Hospital Discharge Survey, 1979 to 2001, we evaluated whether or not COPD in adults > or = 25 years old is associated with increased prevalence and in-hospital mortality of several comorbidities. During 1979 to 2001, there were an estimated total of 47,404,700 hospital discharges (8.5% of all hospitalizations in adults > 25 years old) of patients with COPD; 37,540,374 discharges (79.2%) were made with COPD as a secondary diagnosis, and 9,864,278 discharges (20.8%) were made with COPD as the primary diagnosis. The prevalence and in-hospital mortality for pneumonia, congestive heart failure, ischemic heart disease, thoracic malignancies, and respiratory failure were larger in hospital discharges with any mention of COPD. In a nationally representative sample of hospitalizations, any mention of COPD in the discharge diagnosis is associated with higher hospitalization prevalence and in-hospital mortality from other comorbidities. These results highlight the fact that the burden of disease associated with COPD is likely underestimated.
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                Author and article information

                Journal
                Int J Chron Obstruct Pulmon Dis
                Int J Chron Obstruct Pulmon Dis
                International Journal of COPD
                International Journal of Chronic Obstructive Pulmonary Disease
                Dove Medical Press
                1176-9106
                1178-2005
                2015
                11 December 2015
                : 10
                : 2665-2674
                Affiliations
                [1 ]School of Social Sciences, Hellenic Open University, Patras, Greece
                [2 ]Respiratory Medicine Department, University of Thessaly Medical School, University Hospital of Larissa, Larissa, Greece
                [3 ]Medical Department, Novartis Hellas, Athens, Greece
                Author notes
                Correspondence: Eirini Mitsiki, Medical Department, Novartis Hellas, 12th Km National Road No 1, 14451 Athens, Greece, Email eirini.mitsiki@ 123456novartis.com
                Article
                copd-10-2665
                10.2147/COPD.S91392
                4686222
                © 2015 Alexopoulos et al. This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution – Non Commercial (unported, v3.0) License

                The full terms of the License are available at http://creativecommons.org/licenses/by-nc/3.0/. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

                Categories
                Original Research

                Respiratory medicine

                risk factors, copd, icu admissions, hospitalizations, exacerbations

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