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                            [content] => *! There is currently inadequate clinical evidence regarding the effectiveness and safety of endoscopic lung volume reduction (ELVR) using one-way valves in patients with severe lung emphysema and chronic respiratory issues. *! A study was conducted to analyze differences in patient characteristics, clinical outcomes, and adverse events between patients with varying levels of carbon dioxide in their blood (pCO2 ≤45 mm Hg vs. pCO2 >45 mm Hg) after undergoing ELVR. *! Results indicated that patients with pCO2 ≤45 mm Hg had significant improvements in lung function, quality of life, and exercise capacity, while those with pCO2 >45 mm Hg mainly showed benefits in lung volume; both groups experienced a similar rate of adverse events, particularly
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