ArticleChronic obstructive pulmonary diseases (Miami, Fla.)2026
Small Pulmonary Artery and Vein Volumes Independently Predict Oxygen Desaturation in Smokers.
Article in Chronic obstructive pulmonary diseases (Miami, Fla.), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background and research question: Multiple factors affect oxygen levels in chronic obstructive pulmonary disease (COPD), including airflow limitation, emphysema, ventilation-perfusion mismatch, cardiac dysfunction, and pulmonary vascular remodeling. We investigated the association of small pulmonary vein and artery volume with oxygen saturation. Methods: In the COPD Genetic Epidemiology (COPDGene Results: A total of 8931 individuals were included with a mean age of 60.0±9.0 years. Of the participants, 52.7% were male. Half were current smokers (50.7%), and the number of pack years was 44.5±25.0. Median saturation was 97% (interquartile range 95%–98%), and 1040 (11.6%) participants used supplemental oxygen. Oxygen saturation decreased with 0.14% (-0.25, -0.03) ( Interpretation: In current and former smokers, higher small pulmonary vein and artery volume were associated with lower resting saturation and more supplemental oxygen use, independent of lung disease severity or technical parameters. This suggests a role for vascular remodeling in smoking-related disease.
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