ArticleFrontiers in medicine2026
Nonlinear association between P-wave axis and lung function in adult population with COPD: evidence from a cross-sectional study.
Article in Frontiers in medicine, 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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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Abstract
Objective: This study aims to explore the correlation between the electrical axis of the P wave and lung function indicators in patients with chronic obstructive pulmonary disease (COPD) and the prognostic value of the P wave electrical axis in COPD. Methods: A retrospective analysis was performed on data from 407 participants at Henan Provincial People's Hospital, Northeast Henan Hospital. Participants were categorized into control group ( Results: COPD patients were older, predominantly male, and had higher smoking prevalence than controls (all Conclusion: The P-wave axis is closely associated with pulmonary function and COPD risk, exhibiting a nonlinear "J-shaped" relationship with 61.9° (95%CI: 61.5°, 62.4°) inflection point.
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