High Prevalence of Left Ventricle Diastolic Dysfunction in Severe COPD Associated with A Low Exercise Capacity: A Cross-Sectional Study
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{"title"=>"High Prevalence of Left Ventricle Diastolic Dysfunction in Severe COPD Associated with A Low Exercise Capacity: A Cross-Sectional Study", "type"=>"journal", "authors"=>[{"first_name"=>"Marta", "last_name"=>"López-Sánchez", "scopus_author_id"=>"56049347400"}, {"first_name"=>"Mariana", "last_name"=>"Muñoz-Esquerre", "scopus_author_id"=>"56049777300"}, {"first_name"=>"Daniel", "last_name"=>"Huertas", "scopus_author_id"=>"55777337400"}, {"first_name"=>"José", "last_name"=>"Gonzalez-Costello", "scopus_author_id"=>"24553964500"}, {"first_name"=>"Jesús", "last_name"=>"Ribas", "scopus_author_id"=>"7102733298"}, {"first_name"=>"Federico", "last_name"=>"Manresa", "scopus_author_id"=>"7006407624"}, {"first_name"=>"Jordi", "last_name"=>"Dorca", "scopus_author_id"=>"7003615567"}, {"first_name"=>"Salud", "last_name"=>"Santos", "scopus_author_id"=>"7102756240"}], "year"=>2013, "source"=>"PLoS ONE", "identifiers"=>{"issn"=>"19326203", "pui"=>"369208976", "doi"=>"10.1371/journal.pone.0068034", "sgr"=>"84879509653", "scopus"=>"2-s2.0-84879509653", "isbn"=>"1932-6203", "pmid"=>"23826360"}, "id"=>"ebf7c520-7fdf-35cb-bbc8-70b44a7bf9db", "abstract"=>"BACKGROUND A subclinical left ventricle diastolic dysfunction (LVDD) has been described in patients with chronic obstructive pulmonary disease (COPD). OBJECTIVES To evaluate the prevalence of LVDD in stable severe COPD patients, to analyze its relationship with exercise capacity and to look for its possible causes (lung hyperinflation, ventricular interdependence or inflammatory mechanisms). METHODS We evaluated 106 consecutive outpatients with severe COPD (FEV1 between 30-50%). Thirty-three (31%) were excluded because of previous heart disease. A pulmonary function test, a 6-minute walking test (6MWT), a Doppler echocardiography test, including diastolic dysfunction parameters, and an analysis of arterial blood gases, NT-proBNP and serum inflammatory markers (CRP, leucocytes), were performed in all patients. RESULTS The prevalence of LVDD in severe stable COPD patients was 90% (80% type I, n=57, and 10% type II, n=7). A significant association between a lower E/A ratio (higher LVDD type I) and a lower exercise tolerance (6-minute walked distance (6MWD)) was found (r=0.29, p<0.05). The fully adjusted multivariable linear regression model demonstrated that a lower E/A ratio, a DLCO in the quartile 4(th) and a higher tobacco consumption were associated with a lower 6MWD (76, 57 and 0.7 metres, respectively, p<0.05). A significant correlation between E/A ratio and PaO2 was observed (r=0.26, p<0.05), but not with static lung hyperinflation, inflammation or right ventricle overload parameters. CONCLUSION In stable severe COPD patients, the prevalence of LVDD is high and this condition might contribute in their lower exercise tolerance. Hypoxemia could have a concomitant role in their pathogenesis.", "link"=>"http://www.mendeley.com/research/high-prevalence-left-ventricle-diastolic-dysfunction-severe-copd-associated-low-exercise-capacity-cr", "reader_count"=>28, "reader_count_by_academic_status"=>{"Unspecified"=>1, "Professor > Associate Professor"=>1, "Researcher"=>4, "Student > Doctoral Student"=>3, "Student > Ph. D. Student"=>5, "Student > Postgraduate"=>3, "Student > Master"=>6, "Other"=>1, "Lecturer"=>3, "Professor"=>1}, "reader_count_by_user_role"=>{"Unspecified"=>1, "Professor > Associate Professor"=>1, "Researcher"=>4, "Student > Doctoral Student"=>3, "Student > Ph. D. Student"=>5, "Student > Postgraduate"=>3, "Student > Master"=>6, "Other"=>1, "Lecturer"=>3, "Professor"=>1}, "reader_count_by_subject_area"=>{"Unspecified"=>3, "Nursing and Health Professions"=>1, "Medicine and Dentistry"=>22, "Pharmacology, Toxicology and Pharmaceutical Science"=>1, "Economics, Econometrics and Finance"=>1}, "reader_count_by_subdiscipline"=>{"Medicine and Dentistry"=>{"Medicine and Dentistry"=>22}, "Economics, Econometrics and Finance"=>{"Economics, Econometrics and Finance"=>1}, "Nursing and Health Professions"=>{"Nursing and Health Professions"=>1}, "Unspecified"=>{"Unspecified"=>3}, "Pharmacology, Toxicology and Pharmaceutical Science"=>{"Pharmacology, Toxicology and Pharmaceutical Science"=>1}}, "reader_count_by_country"=>{"Netherlands"=>2, "United Kingdom"=>1}, "group_count"=>0}

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Figshare

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Relative Metric

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