Arterial Stiffness Increases Over Time in Relation to Lung Diffusion Capacity: A Longitudinal Observation Study in COPD.


Journal

International journal of chronic obstructive pulmonary disease
ISSN: 1178-2005
Titre abrégé: Int J Chron Obstruct Pulmon Dis
Pays: New Zealand
ID NLM: 101273481

Informations de publication

Date de publication:
2020
Historique:
received: 17 10 2019
accepted: 17 12 2019
entrez: 12 3 2020
pubmed: 12 3 2020
medline: 17 2 2021
Statut: epublish

Résumé

Cardiovascular events are, after cancer, the most common cause of death in COPD patients. Arterial stiffness is an independent predictor of all-cause mortality and cardiovascular events. Several cross-sectional studies have confirmed increased arterial stiffness in patients with COPD. Various mechanisms in the development of arterial stiffness in COPD such as reduced lung function or systemic inflammation have been proposed. However, clinical predictors of arterial stiffness that had been reported in cross-sectional studies have not yet been confirmed in a longitudinal setting. We have assessed the course of augmentation index (AIx) - a measure of systemic arterial stiffness - and possible predictors in a cohort of COPD patients over a period of up to 7 years. COPD patients underwent annual AIx measurement by applanation tonometry for a maximum duration of 7 years. Additionally, we performed annual assessments of lung function, blood gases, systemic inflammation, serum lipids and blood pressure. Associations between the course of AIx and potential predictors were investigated through a mixed effect model. Seventy-six patients (mean (SD) age 62.4 (7.1), male 67%) were included. The AIx showed a significant annual increase of 0.91% (95% CI 0.21/1.60) adjusted for baseline. The change in diffusion capacity (DLco), low-density lipoprotein (LDL), and high-sensitivity c-reactive protein (hsCRP) was independently associated with the increasing evolution of AIx (Coef. - 0.10, p<0.001, Coef. 1.37, p=0.003, and Coef. 0.07, p=0.033, respectively). This study demonstrated a meaningful increase in arterial stiffness in COPD over time. A greater annual increase in arterial stiffness was associated with the severity of emphysema (measured by DLco), systemic inflammation, and dyslipidaemia. www.ClinicalTrials.gov, NCT01527773.

Sections du résumé

Background
Cardiovascular events are, after cancer, the most common cause of death in COPD patients. Arterial stiffness is an independent predictor of all-cause mortality and cardiovascular events. Several cross-sectional studies have confirmed increased arterial stiffness in patients with COPD. Various mechanisms in the development of arterial stiffness in COPD such as reduced lung function or systemic inflammation have been proposed. However, clinical predictors of arterial stiffness that had been reported in cross-sectional studies have not yet been confirmed in a longitudinal setting. We have assessed the course of augmentation index (AIx) - a measure of systemic arterial stiffness - and possible predictors in a cohort of COPD patients over a period of up to 7 years.
Methods
COPD patients underwent annual AIx measurement by applanation tonometry for a maximum duration of 7 years. Additionally, we performed annual assessments of lung function, blood gases, systemic inflammation, serum lipids and blood pressure. Associations between the course of AIx and potential predictors were investigated through a mixed effect model.
Results
Seventy-six patients (mean (SD) age 62.4 (7.1), male 67%) were included. The AIx showed a significant annual increase of 0.91% (95% CI 0.21/1.60) adjusted for baseline. The change in diffusion capacity (DLco), low-density lipoprotein (LDL), and high-sensitivity c-reactive protein (hsCRP) was independently associated with the increasing evolution of AIx (Coef. - 0.10, p<0.001, Coef. 1.37, p=0.003, and Coef. 0.07, p=0.033, respectively).
Conclusion
This study demonstrated a meaningful increase in arterial stiffness in COPD over time. A greater annual increase in arterial stiffness was associated with the severity of emphysema (measured by DLco), systemic inflammation, and dyslipidaemia.
Clinical Trial Registration
www.ClinicalTrials.gov, NCT01527773.

Identifiants

pubmed: 32158204
doi: 10.2147/COPD.S234882
pii: 234882
pmc: PMC6986246
doi:

Banques de données

ClinicalTrials.gov
['NCT01527773']

Types de publication

Journal Article Observational Study

Langues

eng

Sous-ensembles de citation

IM

Pagination

177-187

Informations de copyright

© 2020 Roeder et al.

Déclaration de conflit d'intérêts

Prof. Dr. Malcolm Kohler reports grants and personal fees from Bayer, personal fees from Novartis, personal fees from Boehringer, personal fees from GSK, personal fees from Astra Zeneca, grants from Roche, personal fees from CSL Behring, and personal fees from Mundipharma, during the conduct of the study. The authors report no other conflicts of interest in this work.

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Auteurs

Maurice Roeder (M)

Pulmonary Division, University Hospital of Zurich, Zurich, Switzerland.

Noriane A Sievi (NA)

Pulmonary Division, University Hospital of Zurich, Zurich, Switzerland.

Dario Kohlbrenner (D)

Pulmonary Division, University Hospital of Zurich, Zurich, Switzerland.

Christian F Clarenbach (CF)

Pulmonary Division, University Hospital of Zurich, Zurich, Switzerland.

Malcolm Kohler (M)

Pulmonary Division, University Hospital of Zurich, Zurich, Switzerland.
Centre for Interdisciplinary Sleep Research, University of Zurich, Zurich, Switzerland.

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Classifications MeSH